Jeff Masters, co-founder of Weather Underground, said Invest 90L is moving north at about 5 miles per hour into an area where sea surface temperatures are between 77 and 82 degrees. Expect changes in the track of this storm over the next couple of days. Note the heavy rain that will fall along and to the east of the tropical storm.
So, what in the world is a "Subtropical Storm?" It will send a plume of tropical moisture towards the Gulf Coast for the weekend and that means very heavy rainfall is possible.
"The latest. Thursday runs of our top intensity models. predicted [the storm] could get considerably stronger than previously thought, with peak winds ranging from 40 mph.to 80 mph", writes Jeff Masters of the Weather Underground.
Such winds typically would only break small tree branches, said Robert Molleda, warning coordination meteorologist for the National Weather Service. Only a few have grown into hurricanes, storms with peak winds of at least 74 miles per hour. But the first one was named Andrew.
The first named storm of 2018 in the Atlantic Ocean has developed in the western Caribbean, and its name is Alberto.
The NHC also released detailed graphics tracking the storm's path to the USA mainland and its potential wind speeds. The storm could also slow down or stall, which would only increase the rain totals. It could make landfall anywhere between the MS and Alabama coasts. However, experts say those storms usually form in the Atlantic Ocean; a pre-season storm in the Gulf of Mexico is rarer. Kennedy said the farther east the storm tracks, the more impacts for Marion and Alachua counties. But even that could change by Saturday.
An Air Force Hurricane Hunter plane is scheduled to investigate the system Friday afternoon.
Heavy rainfall is expected for Memorial Day Weekend in South Florida, as Subtropical Storm Alberto has formed over the Caribbean Sea. Odds of development were pegged at 90 percent over the next five days. It is expected to produce 10 to 15 inches of rain across the northeastern region of the Yucatan Peninsula and western Cuba with isolated areas seeing as much as 25 inches of rain.
Sheriff's Capt. Dave DeCarlo, the county's emergency management director, said Citrus should avoid the heaviest of rains, storm surge and winds.
This Memorial Day weekend, anyone seeking nice weather should avoid South Florida and the Gulf Coast.