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Irma Loses Tropical Characteristics, Remains Big Rainmaker

September 10, 2019
UPDATED By WeatherBug Meteorologists, Anthony Sagliani and James West

After ten days of rampaging from the Leeward Islands to the United States, Irma will live out its final hours over Alabama and Tennessee today. 

As of 5 a.m. EDT, Irma has lost its tropical characteristics, prompting the National Hurricane to issue its final advisory. The post-tropical cyclone was located near 33.0 N and 85.2 W, or about 65 miles southwest of Atlanta, and 100 miles east-southeast of Birmingham, Ala. Irma’s top sustained winds are 15 mph. Irma’s minimum central pressure is 998 mb, or 29.47 inches of mercury. It is moving to the north-northwest at 10 mph.

All tropical watches and warnings have been canceled or expired.

Irma’s remnants will lift from Alabama into Tennessee today, bringing rain from Mississippi to Kentucky and Virginia. The system is far enough inland that it won’t be able to tap too much moisture from the Atlantic, limiting its rainfall potential.

Total rainfall amounts today and Wednesday will range from a quarter to an inch from the lower Mississippi and central Ohio valleys into the Carolinas, with lighter amounts found in the mid-Atlantic, Midwest and the Southeast. A few embedded thunderstorms will be possible across the lower Mississippi Valley later today, but these will only be a nuisance.

Ongoing Coastal Flood Warnings are found across northeastern Florida this morning as the rivers drain after the massive storm surge that was pushed up them on Monday.

Very heavy rain and very strong winds have been the hallmark of Hurricane Irma. A WeatherBug station in Naples, Fla., recorded a 142-mph gust near landfall on Sunday afternoon. Four to 8 inches of rain have been recorded from Miami to Tampa, with 8 to 12 inches from Orlando to Jacksonville, Fla.