a. Synoptic History
Hermine developed from a tropical wave which crossed Dakar,
Senegal on 5 September and moved westward across the Atlantic. The wave
was void of significant thunderstorm activity until it reached the Windward
Islands where cloudiness and showers increased and there was a large 24-h
pressure change on 12 September. The wave continued westward very close
to the South American coast and then moved northwestward through the Northwest
Caribbean Sea and the Yucatan Channel where a low pressure system developed.
The system began to interact with an upper low in the Gulf of Mexico and
another tropical wave which reached the area. During this period, a large
and well-defined monsoon-type flow prevailed over Central America, the
Northwestern Caribbean Sea and the Gulf of Mexico. It was not until 1200
UTC 17 September that the system acquired enough organization to be classified
as a tropical depression.
The depression made a cyclonic loop over the central Gulf
of Mexico while interacting with the upper-low located in the Bay of Campeche.
The depression gradually became organized despite the unfavorable upper-level
wind shear which prevailed in the area and reached tropical storm status
at 1200 UTC 19 September. Hermine moved on a general northward track and
made landfall as a weakening 40-mph tropical storm near Cocodrie, Louisiana
at 0500 UTC 20 September.
b. Meteorological Statistics
There were no reports of tropical storm force winds near
the area of landfall.
1. Rainfall DataHermine produced rains of about .5 to 1 inches
c. Casualty and Damage Statistics
There are no reports of casualty and damage from Hermine.
Intensity For Tropical Storm Hermine
for Tropical Storm Hermine