Yellowstone fires of 1988

Fires approach the Old Faithful Complex on September 7, 1988

The Yellowstone fires of 1988 together formed the largest wildfire in the recorded history of Yellowstone National Park. Their causes included a severe drought, a series of strong but dry storm fronts, over-reliance on past fire behavior as an indicator of future fire events, and a lack of understanding of fire ecology in the Greater Yellowstone Ecosystem. Starting as many smaller individual fires, which were initially believed to be easy to contain, the flames spread quickly out of control with increasing winds and drought and combined into one large conflagration, which burned for several months. It was finally extinguished by moist weather in the late fall. A total of 793,880 acres (321,271 ha), or roughly 36 percent of the park was affected by the wildfires. Much of the park remained open to the public during the fire.

Before the late 1960s, fires were generally believed to be detrimental for parks and forests, and management policies were aimed at suppressing fires as quickly as possible. The beneficial ecological role of fire became better understood in the decades before the 1988 Yellowstone fires, and a policy of allowing natural fires to burn under controlled conditions had been highly successful in reducing the area lost annually to wildfires. However, by 1988, Yellowstone was overdue for a large fire, and, in the exceptionally dry summer, the many smaller "controlled" fires started to join up.

The fires burned in a mosaic pattern, leaping from one area to another, while some areas were completely untouched. Large firestorms swept through some regions, burning everything in their paths. Tens of millions of trees and countless plants were killed by the wildfires, and some regions were left looking blackened and dead. Almost 20 years after the fires, many of the hardest hit regions still have numerous snags and an immature forest which clearly delineate where the fires burned. However, more than half of the affected areas were burned by ground fires, which did less damage to hardier tree species.

Tens of thousands of firefighters fought the fires, assisted by dozens of helicopters and airplanes which were used for water and fire retardant drops. At the peak of the effort, over 9,000 firefighters were assigned to the park. With fires raging throughout the Greater Yellowstone Ecosystem and other areas in the western United States, the staffing levels of the National Park Service and other land management agencies were inadequate to the situation. Over 4,000 U.S. Military personnel were soon assisting in fire suppression efforts. The fire fighting effort cost US$120 million. No firefighters died while fighting the fires in Yellowstone, though there were two fire-related deaths outside the park.

The Yellowstone fires of 1988 were unprecedented in the history of the National Park Service, and many questioned existing fire management policies. Media accounts of mismanagement were often sensational and inaccurate, sometimes wrongly reporting that most of the park was being destroyed. This was partly due to the difficulty the National Park Service had in fully assessing the day-to-day situation and accurately disseminating details to the media. Not long after the fires ended, plant and tree species quickly reestablished themselves, and natural plant regeneration has been highly successful. While there were temporary declines in air quality during the fires, no adverse long-term health effects have been recorded in the ecosystem. Contrary to initial reports, few large mammals were killed by the fires, though there has been a reduction in the number of moose which has yet to rebound. Losses to structures were minimized by concentrating fire fighting efforts near major visitor areas, keeping property damage down to $3 million. The knowledge gained from the fires has been invaluable for updating fire management policies and for reaching a better understanding of the role of fire in the environment.

Fire management policy development

In the eastern United States wildfires remained relatively small and rarely posed great risk to life and property. As white settlements moved further west, the first large scale fires were encountered. Range fires on the Great Plains and forest fires in the Rocky Mountains were far larger and more destructive than what had ever been seen in the east. A number of catastrophic fire events over the years greatly influenced fire management policies and directives.

The worst loss of life in United States history due to a wildfire occurred in 1871 when the Peshtigo Fire swept through Wisconsin, killing more than 1,500 people. The Great Fire of 1889 in California and especially the Great Fire of 1910 in Montana and Idaho, contributed to the philosophy that fire was a danger that needed to be suppressed. The Great Fire of 1910 had burned 3 million acres (1.2 million ha), destroyed a number of communities and killed 86 people, and this event prompted various land management agencies to develop fire management plans which emphasized wildfire suppression. U.S. Government land agencies including the National Park Service generally followed the policies established by the U.S. Forest Service regarding fire management, as that agency oversees the majority of the nation's forestlands.

Firefighter hiking to distant fire, 1953

Prior to the middle of the 20th Century, most forest managers believed that fires should be suppressed at all times. By 1935, the U.S. Forest Service's fire management policy stipulated that all wildfires were to be suppressed by 10 A.M. the morning after they were first spotted. Fire fighting crews were established throughout public lands, and generally staffed by young men during fire seasons. By 1940, firefighters known as smokejumpers would parachute out of airplanes to extinguish flames in remote locations. By the beginning of World War II, over 8,000 fire lookout towers had been constructed in the United States. Though many have been torn down due to increased use of airplanes for fire spotting, three are still used each year in Yellowstone. Firefighting efforts were highly successful, with area burned by wildfires reduced from an annual average of 30 million acres (12 million ha) during the 1930's, to between 2 and 5 million acres (810,000 and 2 million ha) by the 1960's. The need for lumber during World War II was high and fires that destroyed timberland were deemed unacceptable. In 1944, the U.S. Forest Service developed an ad campaign to help educate the public that all fires were detrimental. Using a cartoon black bear named Smokey Bear, this iconic firefighting bear can still be seen on posters with the catch phrase, "Only you can prevent forest fires". Early posters of Smoky Bear mislead the public into believing that western wildfires were predominately human caused. In Yellowstone, human caused fires average between 6 to 10 annually while another 35 wildfires are ignited by lightning.

Some researchers, as well as a number of timber companies and private citizens, understood that fire was a natural state of affairs in many ecosystems. Fire would help clean out the understory and dead plant matter, allowing economically important trees species to grow with less competition for nutrients. Native Americans would often burn woodlands to reduce overgrowth and increase grasslands for large prey animals such as bison and elk. As early as 1924, environmentalist Aldo Leopold argued that wildfires were beneficial to ecosystems, and were necessary for natural plant propagation of numerous tree and plant species. For the next 40 years, more foresters and ecologists concurred about the beneficial nature of wildfire to ecosystems. In 1963, a group of ecologists consulted by the National Park Service recommended that wildfires should be allowed to periodically burn to restore the environmental balance in parks. The passing of the Wilderness Act in 1964, helped to address the role of fire as a natural part of ecosystems. By 1968, the National Park Service adjusted its fire management policies to reflect changing attitudes about fire. The service determined that fires that started naturally (by lightning), would be permitted to burn if they posed little risk to human life and property. The service also decreed that under prescribed conditions, controlled burns would be deliberately set to restore balance to ecosystems. Increased knowledge of fire ecology came after many forests had aged to maturity and were overdue for a large scale burn.

By 1972, the National Park Service began allowing natural fires in Yellowstone to burn under controlled situations so long as they didn't threaten lives or property. Fires of this type were referred to as prescribed natural fires. Between 1972 and 1987, a total of 235 prescribed natural fires burned a relatively small 33,759 acres (13,661 ha) under the directives of the new policy. Of these, only 15 had spread to more than 100 acres (40 ha). The five years prior to 1988 were also a lot wetter than normal and this may have reduced the area of the fires during that period. The prescibed natural fire policy appeared to be an effective way to manage fires, especially in the Yellowstone region.

Contributing factors of the fires

Typical lodgepole pine forest of Yellowstone as seen in 1965

Yellowstone's forest are dominated by the lodgepole pine and is eventually replaced by other tree species after 80 to 100 years as a forest matures. In Yellowstone, a very short growing season due to high altitude and relatively poor soils allows the lodgepole pine to reach ages approaching three hundred years before other trees such as Engelmann spruce and subalpine fir become established. The lodgepole pines found throughout the Yellowstone Plateau high country grow in uninterrupted dense stands averaging similar ages in various groupings. Though trees normally found in more mature forests do occur, they are not found in large stands as in other forests in the Rocky Mountains. By the 1980's much of the lodgepole pine forests in Yellowstone were between 200 and 250 years old and approaching the end of their lifecycle.

Formal fire recordkeeping in Yellowstone began in 1931 when the Heart Lake Fire burned 18,000 acres (7,284 ha). Despite its small extent, it was the largest fire in the period from when the park was created until 1988. Research indicates that only 2 or 3 large fires occur on the Yellowstone Plateau every 1,000 years. The previous major Yellowstone fire was in the early to mid 1700's, well before the arrival of white explorers.

The mountain pine beetle had killed a number of trees in the Greater Yellowstone Ecosystem, which increased the fuel load and likely contributed to the fires. Over the years, large quantities of dead and down trees had littered the forest floor, preserved for decades by a slow decomposition rate created by the long winters reduced the time microorganisms have to decompose the fallen timber.

The winter season of 1987-1988 was drier than usual, with the Greater Yellowstone Ecosystem receiving only 31% of the normal snowpack. However, April and May 1988 were very wet and the abundant moisture greatly aided grass and understory development. By June, the rainfall stopped and little was recorded in the entire Greater Yellowstone Ecosystem for the next four months. By July, the worst drought in the history of Yellowstone National Park began. Grasses and plants which grew well in the early summer soon turned to dry tinder. Relative humidity levels fell further desiccating the forest. Fuel moisture content in dead and fallen timber was recorded as low as 5%. By mid-August, humidity levels were averaging below 20% and were recorded as low as 6% on one occasion. To compound the lack of rainfall, the majority of Yellowstone's soils are rhyolitic volcanic rocks and soils which have poor moisture retention.

Accumulated fuel, old forests, dead and dying trees, abundant grasses and other understory plants, and unabated and exceptionally dry conditions, spelled trouble for Yellowstone. However, foresters and fire ecologists predicted a normal fire season for the Greater Yellowstone Ecosystem and anticipated normal rainfall for July. Past history provided little evidence to suggest that 1988 would be any different than the previous 100 plus years the park had existed. But, as major fires started to break out throughout the Rocky Mountain region, the media began to take notice. Twenty small fires started in Yellowstone by July and of those, eleven went out on their own. The remainder were closely monitored in accordance with the prescribed natural fire policies. By July 15th fires throughout the entire Greater Yellowstone Ecosystem had burned 8,500 acres (3,440 ha) and though this was not out of the ordinary, media focus on fires raging throughout the American west influenced the decision by the park officials to initiate fire suppression efforts on July 15th. Within a week after suppression efforts commenced, the fires had spread to include almost 100,000 acres (40,470 ha) just on the parkland alone.

Major fires in Yellowstone in 1988

Firefighting at Norris on August 20, 1988. Later dubbed "Black Saturday" due to the huge amount of land that was burned as well as the dense smoke that turned daytime to night in some places

Almost 250 different fires started in Yellowstone and the surrounding National Forests between June and August, and of these, only 7 fires were responsible for 95% of the total area that burned. By the end of July, even though the National Park Service and other agencies had fully mobilized available personnel, the fires continued to expand. Smaller fires burned into each other, propelled by dry storms which brought howling winds and dry lightning strikes but no rain. On August 20, the single worst day of the fires and later dubbed "Black Saturday", more than 150,000 acres (60,702 ha) were consumed during one of numerous firestorms. Ash from the firestorms throughout the park drifted as far away as Billings, Montana, 60 miles (96 km) to the northeast. The wind driven flames jumped roads and firelines, and burning embers started new fires a mile (1.6 km) or more ahead of the main fires. Ground fires raced the fuel ladder to the forest canopy and became crown fires with flames over 200 feet (60 m) high. On that single day, more Yellowstone land burned than had in all the other fires combined since the establishment of the park. Throughout the summer, fires made huge advances of 5 to 10 miles (8-16 km) a day, and there were even occasions when more than 2 miles (3.2 km) in one hour were recorded.

One large group of fires was known as the Snake River Complex. These fires were in the southern section of the park, in the headwaters region of the Yellowstone and Snake Rivers. The largest fire in the group was the Shoshone fire which was started by lightning on June 23. The prescribed natural burn policy was still in effect for this fire so fire suppression was not initially commenced. The fire smoldered with little movement for several weeks, then rapidly started expanding towards the northeast on July 20.

Ground fires in Grant Village quickly climbed trees into the canopy and became crown fires

The Red fire started near Lewis Lake on July 1 and like the Shoshone fire, advanced little for several weeks. The fire then moved northeast on July 19 and combined with the Shoshone fire in August. As these two fires advanced towards the Grant Village area, evacuations were ordered so fire fighting crews could concentrate on structure protection. In the midst of a large lodgepole pine forest, the Grant Village complex was the first major tourist area impacted that season. A number of small structures and the some of the campground complex were destroyed. After the Red and Shoshone fires combined, they were referred to as the Shoshone fire, since it was much larger. The Mink fire started in Bridger-Teton National Forest from lightning on July 11, and burned north following the Yellowstone River valley, after firefighters forced the fire away from private lands. The Mink fire eventually burned sections inside the park after July 23, but was deemed to be a low risk since it was in a very remote section of the park. The third large fire was the Huck fire, which started after a tree fell on a power line on August 20th. The fire burned primarily in the John D. Rockefeller, Jr. Memorial Parkway, crossing Yellowstone's southern border on August 30. The Snake River Complex of fires burned more than 140,000 acres (56,660 ha) before they were extinguished by wet weather in the fall. One of the most impressive events of this fire complex occurred on August 23 when firestorms swept across the Lewis River Canyon, propelled by winds of 60 mph (96 km/h) and gusting to 80 mph (128 km/h).

Progression of various fires in the Greater Yellowstone region, July to October, 1988

The Mist fire started on July 9 in the eastern section of the park in the Absaroka Mountains. Two days later, the Clover fire started in the same region and both fires combined and were renamed as the Clover Mist fire on July 20. Situated in rugged terrain, this fire was very difficult to fight and on August 20, the fire advanced from the south towards the small town of Cooke City, Montana and continued to threaten the town for several more weeks. The Clover Mist fire eventually consumed more than 140,000 acres (56,660 ha). The Storm Creek fire started on June 14 well north of the park in the Absaroka-Beartooth Wilderness, and for almost two months seemed to pose little threat to Yellowstone. Then, on August 20th, the fire moved rapidly to the south also threatening the town of Cooke City, this time from the north. An effort to bulldoze a wide fire break and set backfires to try and starve the fires of combustibles almost became a disaster when an unexpected change in wind direction brought the fires to within a hundred yards of parts of the town, forcing evacuations on September 6th. The other major fire located in the northern section of the park was the Hellroaring fire. Started in Gallatin National Forest on August 15 from embers from an unattended campfire, the fire initially moved north, but then turned around a few days later and moved south, threatening the area near Tower Junction.

In the northwest, the Fan fire started on June 25 and was originally considered a threat to the town of Gardiner, Montana, just outside the park's north entrance. Firefighting efforts on this fire were the most successful of all that were undertaken in 1988. Though the fire wasn't contained for a couple of months, by mid August it was no longer considered a threat to lives and property.

The largest fire in the park was the North Fork fire, both in terms of damage to structures and area burned. The fire started on July 22 when a man cutting timber dropped his cigarette in Caribou-Targhee National Forest just outside the park's western border. The North Fork fire was the only major fire that was fought from the beginning since it started after the prescribed fire policy was halted on July 15th.

The Clover Mist fire raced north across the Mirror plateau during a firestorm

The fire spread towards the northeast and by the end of the first week of August was threatening Madison Junction and nearby campground facilities. The fire then raced towards Norris Junction on August 20th. Firefighters there used water and foam to keep the structures from being consumed by the blaze. The fire then raced along the Yellowstone Plateau towards facilities at Canyon on August 25th, where land management agencies and the U.S. military put forth enormous efforts to protect structures. The eastern flank of the fire calmed down for several days, then down sloping winds off the Yellowstone Plateau forced flames along the west side of the fire towards the town of West Yellowstone, Montana. There, private citizens assisted assigned personnel in soaking hundreds of acres of forestland to protect both the town and an electrical power substation. The fire burned a substantial section of forest along the Madison River valley. On July 7th, a dry front pushed flames along the southern section of the North Fork fire towards the large visitor complex adjacent to the Old Faithful Geyser basin. All non emergency personnel were ordered to be evacuated, however political issues influenced National Park Service management directives and the complex had not been completely closed to incoming tourists, with some visitors still arriving at Old Faithful not long before the main firestorm hit by mid afternoon. An all out aerial bombardment with air tankers dropping fire retardant failed. Firefighters concentrated on structure protection, especially those of historical significance such as the Old Faithful Inn, using fire engines and portable water pumping systems to keep the roofs and other surfaces of the structures wet. 1,200 firefighters including 120 military personnel dug fire lines and cleared away brush near structures. Winds crested up to 80 mph (128 km/h) as the fire approached from the west.

A firestorm from the North Fork fire approaches the Old Faithful complex on September 7, 1988

The fires spread to forested sections near to, but generally away from major structures, but 19 small structures were destroyed and there was also extensive damage to an old dormitory. The fire was so intense that vehicles left near the fire had their wheels melted, windshields shattered and paint scorched. Though most of the Old faithful complex had been spared, the park service decided that for the first time, the entire park would be closed to non emergency personnel on September 8th. The night of the 9th and the morning of the 10th of September, the North Fork fire jumped a fireline along its northeastern flank and approached Mammoth Hot Springs where a large concentration of historical structures as well as the Park Headquarters is located. Rain and snow arrived in time to slow the fires before they threatened the complex. By the time the North Fork fire finally died down, it was responsible for 60% of the burned area within the park; more than 400,000 acres (162,000 ha).

Colder weather, bringing with it rain and snow on September 11th calmed the fires down substantially throughout the Greater Yellowstone Ecosystem. Though the fires continued to burn well into the middle of November, they never again posed an immediate risk to life or property. Many fire crews were sent home, but additional manpower continued to arrive at Yellowstone to commence rehabilitation of areas that had been impacted by the firefighting efforts. Hundreds of miles of firelines, helicopter landing zones and fire camps needed to be restored to a more natural state, and thousands of hazardous dead trees needed to be cut down to protect roads and buildings. Finally, on November 18th, all fires in Yellowstone were officially declared out.

Fighting the fires

Firefighters on the fireline near Mammoth Hot Springs, September 10, 1988

1988 was a big year for wildfires in the western United States, with more than 72,000 fires, including 300 rated as major fires, reported during the year. Regular firefighting employees and equipment were stretched to the limit, and consequently, over 6,000 U.S. Military personnel assisted in the fire fighting efforts nationwide, with more than 600 assigned to Yellowstone. At the height of the fires, over 9 thousand firefighters and support personnel were assigned to Yellowstone at one time and by the time the fires finally went out, more than 25,000 had been involved in the fire suppression efforts. Fire crews would routinely work 2 to 3 weeks at a time, be sent home and then return for one of two more tours of duty. The normal workday was as long as 14 hours. Assignments included digging fireline, watering down buildings, clearing undergrowth near structures and installing water pumping operations. Hundreds of firefighters were assigned to engine crews as a large percentage of the firefighting efforts were to protect structures. No firefighters inside the park died as a result of the fires, but one firefighter and an aircraft pilot died in separate incidents outside the park. A number of firefighters were treated for various injuries with the more common complaints being fatigue, headaches and smoke inhalation. A few firefighters were exposed to noxious fumes from sulfur emissions from a geothermal area.

Firefighters created 655 miles (1,054 km) of fireline by hand and 137 miles (220 km) with mechanized equipment such as bulldozers. Most of the bulldozer work was done on the North Fork fire as some of the other fires were too remote or in steep terrain prohibiting the safe operation of heavy equipment. Bulldozers and other heavy equipment were prohibited from many areas of the park due to the impact they have on surface features. Additionally, the thin, unstable ground that is near geothermal features could not be trusted to support the weight of heavy equipment. Bulldozers are rarely used on fires in U.S. National Parks.

Aerial firefighting efforts using 120 helicopters and aircraft to combat the inferno were significant. Aircraft logged over 18,000 hours of flight time and dropped 1.4 million gallons (5.3 million liters) of fire retardant as well as 10 million gallons (38 million liters) of water on the fires.

More than 100 fire engines were assigned to the fire. Structural fire engines were used in building complexes where a number are stationed permanently as in an urban setting. Others were specialized wildland fire engines deployed throughout the park which are smaller and have more capability for movement over rough terrain.

120 million dollars was spent fighting the fires and structure loss was estimated at 3 million dollars. Later analysis has shown that aside from concentrated fire suppression efforts near major tourist facilities, most firefighting work proved to be insufficient to stop what was likely an unstoppable force.

Impacts on the park

Vegetation and wildlife

In this 2006 image, dead snags still stand almost 20 years after the fires, but lodgepole pines are thriving in the understory

The fires in Yellowstone burned in a mosaic pattern, with some areas greatly impacted and others only marginally affected. Inside fire perimeters, large expanses of forest were completely untouched. Three major types of burning occurred in Yellowstone in 1988. From an aesthetic viewpoint, the most destructive fires were the canopy crown fires that in many places obliterated entire forests. Crown fires accounted for about 41 percent of all the area that burned. Mixed fires burned both the canopy and vegetation on the ground, or burned one or the other as they spread through the forest. Ground fires slowly spread along the ground, consuming smaller plants and dead plant material, however, some burned for longer duration and intensity, contributing to the loss of many trees whose canopies were never directly impacted.

The recovery from the fires was almost immediate, with plants such as fireweed appearing in a matter of days after a fire had passed. While surrounding national forests did some replanting and even dispersed grass seed by airplane, the regeneration in Yellowstone was generally so complete that no replanting was even attempted. Though some small plants did not immediately reassume their pre-fire habitats, most did, and the vast majority of plants regrew from existing sprouts which survived the heat from the fires. A profusion of wildflowers in burned areas, especially between 2 and 5 years after the fires, was readily observable.

The year after the fires, and for a number of years afterwards, wildflowers were abundant in burned areas

Seeds had little distance to travel, even in severely burned areas. Much of the most badly burned forest was within 160 to 650 feet (50 to 200 m) of areas that were less impacted. Still, most regeneration of the plants and trees came from immediate sources, either above or below ground. Lodgepole pines generally do not disperse their seeds more than 200 feet (60 m) so seed dispersal from less impacted areas apparently had little effect on more severely burned areas. In areas that did experience complete burnouts, the average depth of charred soil was only about half an inch (14 mm), so few roots, even of grasses, were killed by the fire. This allowed rapid regeneration throughout the ecosystem.

The predominate tree in Yellowstone, the lodgepole pine, did not survive the fires, except in areas where the heat and flames were very mild. The lodgepole pine is serotinous and often but not always produces pine cones that remain closed and will not disperse seeds unless subjected to fire. Research of test plots established after the fires indicated that the best seed dispersal occurred in areas which had experienced severe ground fires, and that seed dispersal was lowest in areas which had only minor surface burns. Regions that experienced crown fires sometimes had the highest rates of regeneration of lodgepole pine after 5 years. However, the rate of lodgepole regeneration was not uniform, with some areas experiencing extremely high densities of new growth while other areas had less. Stands of dead lodgepole killed by the fires may persist for decades, rising above new growth and providing habitat for birds and other wildlife.

Aspen became more widespread after the fires, with the tree species occupying areas that had been dominated by conifers. It had long been believed that Aspen regenerated by sprouting from existing roots rather than by seed dispersal. However, Aspen sprouts appeared two years after the fires as far as 9 miles (15 km) from the nearest known Aspen trees. Aspen is a preferred grazing food for elk and many of the newer Aspen are consequently small, except in areas that are harder for elk to get to. The resurgence of Aspen after the fires was a contrast to pre-fire events, as Aspen had been increasingly scarce in the park. This might be a temporary event as conifers continue to grow and eventually crowd out other tree species.

A bull elk surveys an area that recently burned

Contrary to media reports and speculation at the time, the fires killed very few park animals— surveys indicated that only about 345 elk (of an estimated 40,000–50,000), 36 mule deer, 12 moose, 6 black bears, and 9 bison had perished. Of 21 grizzlies that were radio-collared and had home ranges where the fires happened, only one was believed to have been lost. Grizzlies were observed in burned areas more often than unburned areas the following year, feeding on the proliferation of roots and foliage as well as ants which thrived due to all the dead wood. Moose had been declining in the northern sections of the park since the 1960s, but the decline became more obvious after the fires. Unlike elk, which are primarily grazers and tend to eat grasses, moose are more likely to be browsers, consuming primarily woody food sources, particularly willow and subalpine fir, which were temporarily reduced by the fires. All ungulates experienced a high initial mortality the winter after the fires, but this has been attributed to a severe winter more than the fires themselves. However, moose populations, unlike other ungulates, have not rebounded in subsequent years. Rodents likely experienced the highest mortality of all mammals due not only to heat and smoke they could not easily escape, but also because of the reduction in forest cover, allowing would-be predators less difficulty in spotting them.

Approximately 100 dead fish were reported in two streams after fire retardant was accidentally dropped on them. Aside from a temporary decrease in a few species of aquatic insects, no long term impacts have been observed on aquatic life in any of Yellowstone's rivers or lakes.

Air and water

Smoke plumes from the 1988 fires as seen from space

The smoke and airborne particulates from the fires posed a threat to local communities on several occasions. Smoke and particulates were especially high in Gardiner, Montana. There, monitoring stations maintained by the Montana Department of Health and Environmental Sciences and the park recorded 19 days where recommended allowable particulate concentrations were exceeded. This was also the case near fires, and on 7 occasions at Mammoth, Montana, the location of the park headquarters. However in no other surrounding communities were particulates found to be above acceptable levels. Smoke and haze made driving difficult and even dangerous in extreme situations. A number of fire fighters were treated at clinics for smoke and dust inhalation and a few for inadvertently inhaling fumes from a sulfur ignition near one of the geothermal areas.

In the aftermath of the fires, erosion was a particular concern, especially as the park received heavy rainfall the following year. Helicopters dropped millions of gallons of water on the fires, and in a few instances water retrieval from small creeks actually dropped the water level temporarily. Stream flow was also impacted whenever a temporary impoundment was constructed for water pumping operations. The more than a million gallons of Ammonium phosphate based fire retardant also polluted some streams, but this too was a transient situation that had no long term ill effects on water quality. Fire fighting foams used on wildfires differ from those used for other situations such as fuel fires. They are very low in toxicity levels and were believed to have completely dispersed by the spring of 1989.

Structure damage

Firefighters sprayed foam on structures in the Mammoth Hot Springs complex on September 10, 1988

The park service ensured that life and property took priority in their efforts to suppress the fires. Of the more than 1,000 structures located in the park, only 67 were destroyed. There were 400 structures located in the Old Faithful complex and only 19 of these were destroyed, 12 of which were concessionaire housing units and relatively inexpensive to replace. Major tourist locations in the park such as the one at Old Faithful were heavily staffed by fire fighting crews and equipment, especially if fires were expected to present an immediate danger. Fire fighters used a variety of methods to establish safe zones in and near these complexes, yet every single visitor complex was evacuated by non-critical personnel at least once during the fires.

Surprisingly, of the 38 backcountry patrol cabins used by park rangers and park staff, the only one lost to the fires was at Sportsman Lake, and it was rebuilt the following summer. However, fires did a lot of damage to numerous campgrounds, backcountry bridges used by hikers, and 10 miles (16 km) of power lines and 300 utility poles. Some of the boardwalks used to keep tourists elevated above geothermal areas were also destroyed but were quickly replaced.

Media controversies

News crews were required to wear fire fighting clothing known as Nomex whenever they were in close proximity to fires

Since Yellowstone is one of the most famous national parks in the world, news coverage was extensive and sometimes sensational. Due to difficulty of fully assessing the fires, federal officials sometimes had only limited information to present to the media. The National Park Service was besieged by 3,000 media requests and the two park public information officers, even though assisted by a staff of over 40 employees, were not always able to grant all requests. 15 more park personnel were assigned the role of information officer, to act as liaisons with the media where fire fighting manpower was concentrated. By the time the fires were under control in mid November, the park was still receiving 40 to 70 media requests daily. Media coverage of the fires brought the National Park Service more national attention than it had ever received and the fires have been called one of the most important events in the history of that agency.

Lack of understanding by the media regarding wildfire management often led to sensationalistic reporting and inaccuracies. Some news agencies gave the impression that the majority of the park was destroyed. On August 30, a ABC news interview with Stanley Mott, apparently a tourist, incorrectly identified him as the Director of the National Park Service (William Mott). In another story, the New York Times stated that the Park Service policy was to allow natural fires to burn themselves out, whereas that of the U.S. Forest Service was to suppress all such fires - a mischaracterization of the policies of both agencies at the time. The media occasionally had difficulty distinguishing between the National Park Service and the U.S. Forest Service, two completely different agencies. Sources quoted by the Washington Post, USA Today and the Chicago Tribune later stated that comments attributed to them were fabricated, and one source commented that a September 8, 1988 report by the Chicago Tribune had more errors than facts. On the same day, the Washington Post sensationalized the smoke and presence of military vehicles and helicopters overhead to Danang, Vietnam in 1968, giving the impression of catastrophe. The fires had been very active in late July and after the situation appeared to be under control in early August, the Director of the National Park Service declared on August 11th that the fires were under control. The Director had issued this statement after a conclusion had been reached by fire managers on August 2nd that the fires would not likely expand much further due to a lack of fuel. After Black Saturday on August 20th, and the firestorm that threatened the Old Faithful complex in early September, the media was again highly critical of the park service and their fire management policies.

Fire management since 1988

As a result of research conducted after the fires, a new fire management plan was implemented in 1992. The plan observed stricter guidelines for the management of natural fires, increased the staffing levels of fire monitors and related occupations, and allocated greater funding for fire management. By 2004, further amendments to the wildland fire management plan were added. According to the 2004 plan, natural wildfires would continue to be allowed to burn, so long as parameters regarding fire size, weather and potential danger were not exceeded. Those fires that do exceed the standards, as well as all human caused fires, are to be suppressed. However, these changes are primarily updates of the 1972 fire management plan and continue to emphasize the role of fire in maintaining a natural ecosystem, but apply stricter guidelines and levels of tolerance.

Increased fire monitoring through ground based and aerial reconnaissance has been implemented to quickly determine how a particular fire will be managed. Fire monitors first determine if a fire is natural or human caused. Though all human caused fires are suppressed since they are unnatural, natural fires are monitored. Fire monitors map the fire perimeter, record local weather, examine the types of fuels burning and the amount of fuel available. Additionally, they investigate the rate of spread, flame lengths, fuel moisture content and other characteristics of each fire. Monitors relay the information they gather to fire managers who then make determinations on future actions.

Land management employees remove dead and hazardous fuels from prioritized areas as directed by the Hazard Fuels Reduction Plan. This is to ensure fires have less opportunity to threaten lives and destroy the many historical structures and visitor facilities. As of 2007, the baseline distance for hazard fuels reduction was 400 feet from structures and other prioritized locations. In rare circumstances, controlled burns are deliberately started to remove dead timber under conditions which allow fire fighters an opportunity to carefully control where and how much wood fuel is consumed. However, in Yellowstone there have been very few fires deliberately started but 300 natural fires have been allowed to burn themselves out since the late 1970's. Controlled burns are not considered to be a realistic or appropriate manner in which to eliminate the future potential of wildfires in Yellowstone. Foresters and ecologists have stated that even if large controlled burns had been done in Yellowstone prior to the fires, they would have not greatly reduced the area that was consumed in 1988. Controlled burns would quickly be out of control if they were allowed to burn with the intensity that many tree and plant communities need for proper regeneration.

Greater cooperation between federal and state agencies on a national level has also been coordinated through the National Interagency Fire Center. Though primarily a collaborative effort between federal agencies to develop a national level fire policy, the center also aides local and state governments in addressing their fire management issues. Universally agreed to priorities include management directives which allow natural fires to burn unhindered under prescibed conditions. As in the 1988 fires, protection of lives and property continue to take precedence in all fire fighting efforts.

The most important lesson learned is that a number of ecosystems, including the one Yellowstone is a part of, are specially adapted to large and intense wildfires. Though this was widely believed to be the case well before 1988, the wildfires of that year supported previous conclusions. While large destructive fires are unacceptable in regions where there is a lot of encroachment by communities, they are mandatory in a region such as the Greater Yellowstone Ecosystem, if the expectation is that it is to be maintained in a natural manner.

External links

• Rothermel, Richard (January 1994). "Fire Growth Maps for the 1988 Greater Yellowstone Area Fires" (PDF). General Technical Report INT-304. U.S. Forest Service. Retrieved 2007-07-31. {{cite web}}: Unknown parameter |coauthors= ignored (|author= suggested) (help) (This is a 12mb pdf file)