Subtropical Storm Alberto Is Here

Subtropical Storm Alberto formed earlier today, which was Invest 90L. It is clearly a subtropical storm based on satellite image.

A subtropical storm has thunderstorms away from the center, mostly to the east in the Northern Hemisphere or west in the Southern Hemisphere. They look more like extratropical cyclones than tropical cyclones. Tropical cyclones have the most intense thunderstorms near the center.

Tropical storm force winds in Subtropical Storm Alberto are are up to 253 miles 407 kilometers 220 nautical miles across from northeast to southeast quadrant. The winds are east of the center. That is typical of a subtropical storm. The biggest question is where will Alberto go?

This is a heat map from NCAR-Tropical Cyclone Guidance. The heat map is within 300 miles (480 kilometers) from the center. The forecast models have a consensus that Alberto will go somewhere between Southeast Louisiana, Mississippi, Alabama, or Florida Panhandle. There is a small chance it go could deviate. The next question is how strong will Alberto be?

Most forecast model keeps Alberto as a tropical storm. However, one intensifies Alberto into a Category 1 to near Category 2 hurricane. I think Alberto will be a tropical storm at most. A hurricane is very remote at this time. I do not think Alberto will become a hurricane. It will more then likely become a full fledge tropical storm in the Gulf of Mexico. I would be more concerned of heavy rain and flooding from Alberto than wind.


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