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Major Hurricane Irma


NJwx85

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4 minutes ago, donsutherland1 said:

Since 1851, there were 15 major hurricanes that formed in August or prior to September 15 and passed within 100 nautical miles of Irma's 11 pm position (19.4°N, 66.8°W). 60% made U.S. landfall.

Areas of Landfall:
Florida: 56%
North Carolina: 22%
South Carolina: 11%
Texas: 11%

Strength at Landfall:
Category 1: 11%
Category 2: 22%
Category 3: 22%
Category 4: 44%
Major: 67%

The Category 4 Storms were: 
Great Miami Hurricane (1922): 125 knots
Lake Okeechobee Hurricane (1928): 125 knots
Donna (1960): 125 knots
Hugo (1989): 120 knots

The spread of the 12z ECMWF ensembles continues to highlight the Florida-South Carolina area as being at highest risk of U.S. landfall. North Carolina is also a landfall site for some of those ensemble members. None make landfall west of the Florida Panhandle. A few take Irma offshore and avoid landfall. 

I still think Florida landfall is somewhat more likely than not and probably at similar strength to the three Category 4 hurricanes that made Florida landfall. Second landfall should occur at Georgia or South Carolina. 
 

Don,

excellent summary. One note the Great Miami Hurricane I think you are referring to was n 1926.

 

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The others for reference

 


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