With numerous showers and thunderstorms across the region, an urban flood advisory was issued for northeastern Broward and for Palm Beach County today as parts of those areas have been saturated from rains in the past few weeks.
A flash flood warning remains in effect until 5:30 p.m. for east central Palm Beach County including the Boynton Beach area, the National Weather Service in Miami said.
Heavy rain, lightning and flooding are expected to persist throughout the afternoon in many areas of the region.
The chance of rain persists through Tuesday.
Waterspout season: If you’ve any photos of waterspouts on social media, share them with us.
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Don't be surprised to see waterspouts forming over the ocean over the next five months, as one did on Saturday off Palm Beach County.
That's because this is the beginning of waterspout season, which basically coincides with the rainy season, said Jim Lushine, a retired National Weather Service meteorologist.
“South Florida is the waterspout capital of the world, with hundreds reported yearly and undoubtedly many more unreported,” he said.
Why does South Florida see so many fair weather waterspouts at this time of year? They tend to form when water temperatures are near or above 80 degrees and when winds are light and out of the east.
“They can occur in the ocean, the Intracoastal waterway, Biscayne Bay and Lake Okeechobee," Lushine said.
Although meteorologists define a waterspout as a tornado over water, there actually are two distinct types. One is called a fair weather waterspout, which is by far the most common type in South Florida.
"It’s distinguished by the fact that it does not form from a thunderstorm like a land tornado does," Lushine said. "It usually has winds of less than 60 mph and is a hazard mainly to small craft, particularly non-motorized boats."
The other is called a tornadic waterspout and forms just as a regular tornado over land does – when a thunderstorm produces a lowering cloud base and the funnel becomes visible underneath.
"Tornadic waterspouts, although never really measured, have wind speeds of up 230 mph," Lushine said. "These can be dangerous to any watercraft or aircraft.”Copyright © 2014, The Baltimore Sun