Subtropical Storm Alberto Forms, Will Bring Heavy Rain to U.S.

Tropical depression formation expected Saturday

Hurricane center increases chances of tropical development to 90 percent

The storm is expected to become more organized as it moves north into the Gulf of Mexico on Saturday and Sunday. A gradual strengthening was expected through the weekend as it moves north.

"It's not a true tropical system".

BOOKMARK The Palm Beach Post's storm tracking map here. Subtropical storms have cooler centers than tropical storms, but they can eventually develop into tropical storms and then into hurricanes. It will send a plume of tropical moisture towards the Gulf Coast for the weekend and that means very heavy rainfall is possible.

Winds of 40 mph extend outward up to 115 miles (185 km) from the center.

Another great resource would be the National Weather Service in Mobile. "Heavy rainfall and the wind field will be to the east of the storm". The storm has a minimum central pressure of 1005mb. Expect partly cloudy skies with building afternoon clouds.

Alberto developed one week before the official June 1 start of the Atlantic hurricane season, but the right ingredients for a storm can still come together in May.

Subtropical Storm Alberto remains disorganized and nearly stationary near the island of Cozumel off of Mexico's Yucatan Peninsula. These systems should result in a faster motion of Alberto toward the central Gulf Coast over the weekend. Tropical storm and storm surge watches could be required for portions of this area later today or tonight.

Tropical depression formation expected Saturday
Alberto forms in the Gulf, flooding rains forecast

The NHC also released detailed graphics tracking the storm's path to the USA mainland and its potential wind speeds.

The odds continue to increase that a depression or named storm will form in the northern Gulf of Mexico over the weekend.

Overnight, a series of computer models are now split as to where the system will make landfall. It could make landfall anywhere between the MS and Alabama coasts.

The National Hurricane Center has issued a Tropical Storm Watch for parts of four states, including Southeast Louisiana and New Orleans. The system is not expected to directly impact Virginia, until maybe the end of next week. On Saturday and Sunday, those downpours become even more widespread and some could produce a lot of heavy rain in a short time!

Locally heavy rainfall is forecast across western Cuba and over much of Florida and the northern Gulf Coast into early next week.

On Thursday morning, the National Hurricane Center gave the seemingly-disorganized cluster of thunderstorms a 40 percent chance of developing in the next 48 hours and an 80 percent chance in the next five days. Since May 14, most of Marion County has racked up 9.29 inches of rain, about 7 inches above normal, and most of Alachua County has tallied about 5.38 inches, or about 3.5 inches above normal for May.

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