Portal:Weather
From Wikipedia, the free encyclopedia
Weather is an all-encompassing term used to describe all of the many and varied phenomena that can occur in the atmosphere of a planet. The term is normally taken to mean the activity of these phenomena over short periods of time, usually no more than a few days in length. Average atmospheric conditions over significantly longer periods are known as climate. Usage of the two terms often overlaps as the concepts are obviously very closely related.
This dust storm occurred around Spearman, Texas on April 14, 1935. This was in the heart of the Dust Bowl, a period of severe dust storms and drought, which contributed to the Great Depression in the United States.
Recently selected pictures: Cordell, Oklahoma tornado, Mammatus clouds, Von Kármán vortex street, More...
A weather front is a boundary separating two masses of air of different densities, and is the principal cause of meteorological phenomena. In surface weather analyses, fronts are depicted using various colored lines and symbols, depending on the type of front. The air masses separated by a front usually differ in temperature and humidity. Cold fronts may feature narrow bands of thunderstorms and severe weather, and may on occasion be preceded by squall lines or dry lines. Warm fronts are usually preceded by stratiform precipitation and fog. The weather usually clears quickly after a front's passage. Some fronts produce no precipitation and little cloudiness, although there is invariably a wind shift.
Cold fronts and occluded fronts generally move from west to east, while warm fronts move poleward. Because of the greater density of air in their wake, cold fronts and cold occlusions move faster than warm fronts and warm occlusions. Mountains and warm bodies of water can slow the movement of fronts. When a front becomes stationary, and the density contrast across the frontal boundary vanishes, the front can degenerate into a line which separates regions of differing wind velocity, known as a shearline. This is most common over the open ocean.
Recently selected articles: Water cycle, Global warming, More...
...that nearly 10 years before the 2008 Atlanta Tornado, the Dunwoody Tornado caused significant damage just outside the city limits?
...that the Lorain-Sandusky tornado was both the deadliest tornado and part of the deadliest tornado outbreak in Ohio history?
...that micrometeorology is a study of small-scale weather phenomena, which takes into account such small influences as heat transfer between the ground and air, changes in atmospheric gasses near the surface, and absorption and reflection of solar radiation?
...that teleconnection is a term for climate anomalies which appear to be linked at great distances?
...that the Spaceflight Meteorology Group is a unit of the National Weather Service which provides weather forecasts solely for human spaceflights by the National Aeronautics and Space Administration (NASA).
...that the effects of the El Niño-Southern Oscillation in the United States include drastic changes in temperature, precipitation, and occurrences of severe weather and tropical cyclones?
blizzard | cloud | dust devil | fog | hail | ice | lightning | precipitation | rain | severe weather | snow | thunder | thunderstorm | tornado | tropical cyclone | wind
| convection | supercell | deposition | air mass | evaporation | sublimation | crepuscular rays | anticrepuscular rays | temperature | atmospheric pressure | dew point | weather front | jet stream | windchill | heat index | equivalent potential temperature | primitive equations | pilot reports | METAR
weathering | flood | landslide | mudflow | drought | dust storm | acid rain | heat wave | waterspout | avalanche
Alberta clipper | El Niño | Derecho | Gulf Stream | La Niña | Jet stream | North Atlantic oscillation | Madden-Julian oscillation | monsoon | Pacific decadal oscillation | Panhandle Hook | Pineapple Express | Sirocco | Siberian Express | Walker circulation | Hadley cell | Ferrel cell | Global warming | seasons
atmospheric circulation | Absolute Stable Air | temperature inversion | Dine's compensation | cyclone | anticyclone | sea breeze
|
|
Here are some tasks you can do:
|
May 12
1997: An F1 tornado affected downtown Miami, Florida, causing minor damage.
May 13
1980: A strong tornado devastated downtown Kalamazoo, Michigan.
May 18
1902: A tornado killed 114 in Goliad, Texas.
May 19
1780: An unusual darkness, lasting from noon until after sunset, fell over parts of New England.
May 20
1916: A tornado struck the town of Codell, Kansas. Incredibly, the same town would be hit by two more tornadoes on May 20, 1917 and May 20, 1918.
Vice Admiral Robert FitzRoy (July 5, 1805 - April 30, 1865) achieved lasting fame as the captain of HMS Beagle and as a pioneering meteorologist who made accurate weather forecasting a reality, also proving an able surveyor and hydrographer as well as Governor of New Zealand.
FitzRoy developed charts to allow predictions to be made using observation stations connected by telegraph to transmit to him daily reports of weather at set times. The first daily weather forecasts were published in The Times in 1860, and in the following year a system was introduced of hoisting storm warning cones at the principal ports when a gale was expected. The Weather Book which he published in 1863 was far in advance of the scientific opinion of the time.
Weather: Meteorology | Atmosphere | Basic meteorological concepts and phenomena | Clouds | Floods | Precipitation| Seasons | Snow | Storms | Tornadoes | Tropical cyclones | Types of cyclone | Weather events | Weather lore | Weather hazards | Weather modification | Weather prediction | Weather warnings and advisories| Winds
- List of cloud types
- List of meteorological phenomena
- List of meteorology institutions
- List of SPC High Risk days
- List of tornadoes and tornado outbreaks
- List of North American tornadoes and tornado outbreaks
- List of European tornadoes and tornado outbreaks
- List of Asian tornadoes and tornado outbreaks
- List of Southern Hemisphere tornadoes and tornado outbreaks
- List of F5 and EF5 tornadoes
- List of tornado-related deaths at schools
- List of tornadoes striking downtown areas
- List of tornado records
- List of New York hurricanes
- List of weather-related fatalities in the United States
- History of tropical cyclone spawned tornadoes
WikiProject Meteorology is a collaborative effort by dozens of Wikipedians to improve the quality of meteorology- and weather-related articles. If you would like to help, visit the project talk page, and see what needs doing.
WikiProject Severe weather is a similar project specific to articles about severe weather. Their talk page is located here.
Wikipedia is a fully collaborative effort by volunteers. So if you see something you think you can improve, be bold and get to editing! We appreciate any help you can provide!
Culture · Geography · Health · History · Mathematics · Nature · Philosophy · Religion · Society · Technology
