Meteorological Analysis
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Harvey originated from a tropical wave which moved off the African coast on
September 4th. The wave was inhibited by hurricane Floyd's outflow as it crossed
the Atlantic under the subtropical ridge. On September 16th as Floyd began to
move away from the wave, the wave began to organize. The wave then drifted
into the Gulf of Mexico and formed a surface low on the 18th. On September
19th convection increased with the low and the low was declared a tropical
depression, about 350 nm WSW of St. Petersburg, Florida. The depression
continued to strengthen and became tropical storm Harvey on the 20th,
reaching a peak intensity of 60 mph with a pressure of 995 mb the same day.
Heavy shear and dry air then began to affect Harvey, causing the storm to
become very lopsided. On the 20th and 21st a mid-level flow pushed Harvey
E and then ESE. This motion resulted in Harvey making landfall near Everglades
City, Florida on the 21st with its peak winds of 60 mph. Harvey rapidly crossed
Florida, bringing heavy rains with gusty winds. On the 22nd Harvey became
extratropical and merged with a front off of the Carolinas.
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Casualty and Damage Overview
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There are no casualties attributed to Harvey. There was minor wind and flood
damage from Harvey in Florida, totaling $15 million.
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Harvey Hurricane Research Division Products
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Imagery
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Tracking Data
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Tropical Storm Harvey
Time Lat Lon Wind(mph) Pressure Storm type
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6 GMT 09/19/99 25.0N 87.8W 35 1005 Tropical Depression
12 GMT 09/19/99 25.5N 87.8W 35 1004 Tropical Depression
18 GMT 09/19/99 26.0N 87.8W 35 1003 Tropical Depression
0 GMT 09/20/99 26.3N 87.4W 45 1002 Tropical Storm
6 GMT 09/20/99 26.6N 86.9W 45 1001 Tropical Storm
12 GMT 09/20/99 27.0N 86.3W 45 998 Tropical Storm
18 GMT 09/20/99 27.0N 85.5W 60 998 Tropical Storm
0 GMT 09/21/99 27.1N 84.6W 60 995 Tropical Storm
6 GMT 09/21/99 26.5N 83.9W 60 995 Tropical Storm
12 GMT 09/21/99 26.0N 82.8W 60 996 Tropical Storm
18 GMT 09/21/99 25.9N 81.5W 60 999 Tropical Storm
0 GMT 09/22/99 26.9N 78.6W 45 1000 Tropical Storm
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Tracking maps courtesy of NHC
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Selected Satellite Image
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