Heavy rain possible for Keys, parts of South Florida over weekend

3 day precip

Forecast precipitation through Tuesday shows wet weather on tap for South Florida. (Credit: NOAA/ WPC)

South Florida may be in for a brief respite from its bone-dry spring.

Areas of the Florida Keys could get almost 3 inches of rain Saturday and Sunday from an advancing low pressure system developing in the southwestern Gulf of Mexico.

That’s the precipitation prediction from the Weather Prediction Center, with lesser amounts to the north over the southern peninsula.

Still, the National Weather Service in Miami is forecasting up to 1.25 inches for parts of South Florida, with the heaviest rain totals focused on Sunday and Sunday night before the low slides off to the northeast into the Atlantic.

Precipitation probabilities jump to 60 percent Saturday night and then increase again to 80 percent on Sunday, when a thunderstorm or two is possible, according to forecasters. Sunday night rain chances are at 60 percent before falling to 20 percent on Monday.

A cold front is expected to push through the area on Monday, minus any cool air. But it should be drier, with sunny skies in the forecast through Friday.

Some cooler temperatures may make into Central Florida, though, especially in the interior.

If the rainfall forecast pans out, it would give Palm Beach International Airport its wettest day since February 22, when 1.70 inches fell. That mid-winter rain event brought the month to within a quarter of an inch of normal February precipitation.

As of Friday, PBI was dealing with a 2.59-inch rainfall deficit for April, so it’s very unlikely that the weekend’s storms will pull monthly totals up to par. Miami is more than 2 inches behind on rainfall and Fort Lauderdale is just under 2 inches short.

Naples is about an inch and a half short.

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EXIT ARLENE: The National Hurricane Center issued its last advisory on Tropical Storm Arlene — the first named storm of the 2017 hurricane season — on Friday as it lost most of its deep convection.

Arlene, moving through the deep Central Atlantic, topped out as a 50 mph tropical storm and was only the second storm observed in the Atlantic during the satellite era, according to the NHC.

No new development is expected over the next five days.

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May July temps

TOASTY START TO SUMMER: The new 90-day forecast from NOAA’s Climate Prediction Center for May through July calls for warmer-than-average temperatures across the entire nation, with the exception of the extreme northern Rocky Mountain States. Probabilities for a warm start to the summer are highest in the Gulf States, including Florida and the entire East Coast. (Credit: NOAA/ CPC)

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Author: jnelander

Freelance writer and editor

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