An EOSDIS satellite's view of subtropical storm Alberto to the south west of the Florida seen in a handout photo made available by Nasa Worldview, on May 27, 2018, by the US National Hurricane Center (NHC).
Alberto is expected to produce heavy rainfall and flooding over western Cuba, South Florida and the Florida Keys, the National Hurricane Center said Sunday.
A Storm Surge Watch is in effect for entire the west coast.
Forecasters said Alberto could bring unsafe high water to southern coastal states when it douses an area from MS to western Georgia with up to 30cm of rain and possible tornadoes.
Alberto will probably weaken through Tuesday as it moves northward to the Tennessee Valley and then into the Ohio Valley, finally withering into a "remnant low pressure storm" by Tuesday evening, with winds around 25 miles per hour (40 kph), Roth said.
Forecasters say 2 inches (5 centimeters) of rain is expected on saturated ground with isolated areas getting up to 4 inches (10 centimeters) of rain. By early Monday morning Alberto slowed down, but a faster north-northwestward to northward motion is expected during the next few days.
After moving on shore, the center of Alberto will probably move into northern Alabama by Tuesday.
Flash flooding could take place in Florida, Georgia, Alabama, Tennessee, Virginia and the Carolinas through Tuesday morning, according to forecasts.
Alberto has made landfall between Laguna Beach and Panama City Beach, FL. Wind speeds are now at 45 miles per hour. These scattered showers with possibly an embedded T'storm will continue as we head through the night, though probably a bit less coverage.
"We've had a lot of rain, but we got lucky".
Weakening is forecast over the next 48 hours.
Alberto has been a subtropical storm since its formation because it lacked the warm core that forms the core of tropical storms.
After the exceptionally destructive season last year, forecasters said last week that the possibility of a weak El Niño, along with near-average sea surface temperatures, suggest that this year's hurricane season will be normal or only slightly more active than average.
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