Hurricane Nana (1990): Difference between revisions
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{{Infobox Hurricane |
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|Name=Hurricane Nana |
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|Type=hurricane |
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|Year=1990 |
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|Basin=Atl |
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|Image location=Hurricane Nana (1990).JPG |
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|Image name=Hurricane Nana at peak intensity, October 17 |
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|Type=hurricane |
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|Formed=October 16,1990 |
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|Dissipated=October 21,1990 |
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|1-min winds=75 |
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|Pressure=989 |
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|Damages= |
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|Inflated= |
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|Fatalities=0 direct |
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|Areas=[[Bermuda]] |
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}} |
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'''Hurricane Nana''' was the fourteenth named storm, and eighth and final hurricane of the [[1990 Atlantic hurricane season]]. Nana formed from a vigorous tropical wave that emerged off the coast of [[Africa]] on October 7 near [[Cape Verde]]. Established westerlies intially created an unfavorable environment as the wave traversed the Atlantic, maintaining deep, yet disorganized convection. By October 13th, the wave had reached the [[Lesser Antilles]], but still did not develop due to increasing wind shear caused by an upper level trough. But three days later, the wave formed into a tropical depression 400 miles north of [[Puerto Rico]]. Tropical storm and hurricane watches were later issued for Bermuda, but were discontinued as Nana went on an erratic course away from Bermuda, due to new set of westerlies that blocked the storm from approaching any land. Nana weakened back to a depression on the 19th and dissipated two days later on October 21st. |
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==Meteorological history== |
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{{storm path|Nana 1990 track.png}} |
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On October 7, a vigorous tropical wave emerged off the coast of [[Africa]] near [[Cape Verde]], and despite semi-favorable conditions, the wave didn't develop intially, due to embedded westerlies, which caused the wave to remain disorganized, despite having deep convection. Six days later, the wave had reached the [[Lesser Antilles]], and split, the northern portion of the wave then developed into Tropical Depression Sixteen on October 16. The depression rapidly intensified to a tropical storm, and then a hurricane the next day, receiving the name ''Nana''. Development increased slightly and the system reached it's peak intensity of 85 mph that same day. Hurricane and tropical storm warnings were issued for Bermuda, but were discontinued on the 19th, when Nana curved to the south due to approaching westerlies and weakened to a tropical storm. The system dissipated on October 21st, without approaching, or having any known effects on land. Nana was a very small hurricane, the circulation probably being only 30-40 miles wide. |
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==Naming and records== |
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When Nana was upgraded to a tropical storm in the evening of October 16, it became the first storm to use an "N" name since naming began in 1954, and the first of ten named storms (as of 2008) to do so. |
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== See also == |
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{{tcportal}} |
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* [[List of Atlantic hurricanes]] |
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* [[Tropical Storm Nana (2008)]] |
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==References== |
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[[http://www.nhc.noaa.gov/archive/storm_wallets/atlantic/atl1990-prelim/nana/]] |
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Revision as of 21:33, 21 February 2009
| Category 1 hurricane (SSHWS/NWS) | |
.JPG) Hurricane Nana at peak intensity, October 17 | |
| Formed | October 16,1990 |
|---|---|
| Dissipated | October 21,1990 |
| Highest winds | 1-minute sustained: 85 mph (140 km/h) |
| Lowest pressure | 989 mbar (hPa); 29.21 inHg |
| Fatalities | 0 direct |
| Areas affected | Bermuda |
| Part of the 1990 Atlantic hurricane season | |
Hurricane Nana was the fourteenth named storm, and eighth and final hurricane of the 1990 Atlantic hurricane season. Nana formed from a vigorous tropical wave that emerged off the coast of Africa on October 7 near Cape Verde. Established westerlies intially created an unfavorable environment as the wave traversed the Atlantic, maintaining deep, yet disorganized convection. By October 13th, the wave had reached the Lesser Antilles, but still did not develop due to increasing wind shear caused by an upper level trough. But three days later, the wave formed into a tropical depression 400 miles north of Puerto Rico. Tropical storm and hurricane watches were later issued for Bermuda, but were discontinued as Nana went on an erratic course away from Bermuda, due to new set of westerlies that blocked the storm from approaching any land. Nana weakened back to a depression on the 19th and dissipated two days later on October 21st.
Meteorological history
Tropical storm (39–73 mph, 63–118 km/h)
Category 1 (74–95 mph, 119–153 km/h)
Category 2 (96–110 mph, 154–177 km/h)
Category 3 (111–129 mph, 178–208 km/h)
Category 4 (130–156 mph, 209–251 km/h)
Category 5 (≥157 mph, ≥252 km/h)
Unknown
Extratropical cyclone, remnant low, tropical disturbance, or monsoon depressionOn October 7, a vigorous tropical wave emerged off the coast of Africa near Cape Verde, and despite semi-favorable conditions, the wave didn't develop intially, due to embedded westerlies, which caused the wave to remain disorganized, despite having deep convection. Six days later, the wave had reached the Lesser Antilles, and split, the northern portion of the wave then developed into Tropical Depression Sixteen on October 16. The depression rapidly intensified to a tropical storm, and then a hurricane the next day, receiving the name Nana. Development increased slightly and the system reached it's peak intensity of 85 mph that same day. Hurricane and tropical storm warnings were issued for Bermuda, but were discontinued on the 19th, when Nana curved to the south due to approaching westerlies and weakened to a tropical storm. The system dissipated on October 21st, without approaching, or having any known effects on land. Nana was a very small hurricane, the circulation probably being only 30-40 miles wide.
Naming and records
When Nana was upgraded to a tropical storm in the evening of October 16, it became the first storm to use an "N" name since naming began in 1954, and the first of ten named storms (as of 2008) to do so.
See also
References
[[1]]