Palm Beach County under severe thunderstorm watch

Update 4:21 p.m. A significant weather advisory has been issued for western Palm Beach County alerting to the possibility of funnel clouds as a line of strong thunderstorms with rotation moves northeast at 35 mph.

This advisory is in effect until 5:15 p.m. The storms could include gusty winds of up to 55 mph . A severe thunderstorm watch remains in effect until 9 p.m.

Update 3:15 p.m.: A line of severe thunderstorms producing waterspouts has triggered a marine warning by the National Weather Service for coastal waters from the Jupiter Inlet to Biscayne Bay. The line of storms is moving east at 23 mph with winds gusting to 40 mph.

Waterspouts can easily overturn boats and create suddenly higher seas. This video was taken at about 2:45 p.m. today in Fort Lauderdale.

Update, 2:25 p.m.: The National Weather Service has issued an urban and small stream flood advisory for areas with poor drainage in northeastern Palm Beach County. The advisory is in effect until 4:15 p.m.

The alert comes after Doppler radar spotted thunderstorms possible of producing heavy rain. More than two inches of rain has already falling in some areas, according the the NWS.

Some locations expected to experience flooding include, Jupiter, Palm Beach Gardens, Tequesta and Juno Beach.

Radar image, 2:30 p.m.

Radar image, 2:30 p.m.

Update, 1:30 p.m.: Palm Beach County has been upgraded to a slight risk of thunderstorms by the Storm Prediction Center in Norma, Okla., which is the second tier alert on a five-tier scale. South Florida was not previously expected to have these kinds of severe storms today, and was not even considered marginal for activity as of Friday afternoon.

Palm Beach County remains under a severe thunderstorm watch until 9 p.m.


According to center forecasters warm tropical air blowing from the south is colliding with the forecast cold front boundary in Palm Beach County, causing new storms to develop.

“An isolated tornado or two also does not appear out of the question,” forecasters wrote in their most recent convective outlook. “There now appears enough potential to support slight risk probabilities across parts of the central/southern peninsula.”

About 4.7 million people in a swath of South Florida including Fort Myers, Cape Coral, West Palm Beach, Port St. Lucie, Jupiter, Delray Beach, Boca Raton and Pompano Beach are now in the “slight” category for severe weather.

Forecasters said as the system moves east, a squall line with hail and an embedded tornado is possible.

While a 60 to 70 mph wind shear from the surface to middle atmosphere is strong enough to initiate severe storms, the available energy for the storm in the form of warm moist air is more modest.

But the storms are expected to intensify this afternoon with more daytime heating, according to the Storm Prediction Center.



Update, 1:25 p.m.: The National Weather Service has changed its alert status to severe thunderstorm watch.

The alert is active through 9:00 p.m. in Palm Beach, Okeechobee, St. Lucie, Martin, Collier, Glades and Hendry counties.

Update, 1 p.m.: A severe thunderstorm warning has been issued for northeastern Palm Beach County until 1:15 p.m.WEATHER

The storm is 8 miles south of Indiantown moving east at 25 mph and includes wind gusts of 60 mph.

Locations that will be impacted include Palm Beach Gardens, North County Airport, Jupiter Farms, Philo Farms and Caloosa.

Original post: A significant weather advisory for 45 to 55 mph winds for north central Palm Beach County until 1 p.m. has been issued by the National Weather Service.

Radar is tracking a strong thunderstorm near Canal Point moving northeast at 30 mph.

The primary impacts will be gusty winds that can knock down small tree limbs and branches.

Jupiter, Tequesta, Canal Point, Limestone Creek, Jupiter Farms, Philo Farms and Caloosa are the areas that could be affected. WEATHER

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