Sorry, folks: Those summer showers have come for your long weekend.

After sporadic thunderstorms crashed a brilliant and sunny Saturday, more dark clouds rolled into the Delaware Valley and down the Shore. By Sunday morning, rain had drenched the Philadelphia area, with a flash flood warning in effect until 10 a.m. both in the city and at the Shore, especially further north (Monmouth Beach and Long Branch). The National Weather Service expected more warnings into Sunday night, when possibly heavy rains are in the forecast for the region.

Jeff Burdette (left) and Ryan Burdette bring their boat out of the rain-swollen Delaware River Sunday near Yardley.
JOSE F. MORENO
Jeff Burdette (left) and Ryan Burdette bring their boat out of the rain-swollen Delaware River Sunday near Yardley.

The trend will continue into Memorial Day, National Weather Service meteorologist Trent Davis said.

"It's not going to be the best day, regardless of where you are," Davis said of Monday.

Less rain should fall than Sunday, but skies will be overcast, and temperatures are not expected to even crack 70.

At the Shore, light rain and fog are forecast in the morning, but even once the precipitation stops falling, it should be overcast, with winds of 10 miles an hour or more, and some gusts expected. Temperatures will be in the 60s.

"The afternoon will be better if people want to do things outside — it won't be the best, but at least it will be drier," said Davis.

In the city, the forecast isn't much different — a chance of mist in the morning, with possible fog early.

All in all, it's still better than Florida, where beaches were largely empty Sunday as a slowly intensifying storm carrying brisk winds and heavy rain approached the U.S. Gulf Coast.

The storm disrupted plans from Pensacola in the Panhandle to Miami Beach on Florida's southeastern edge. Lifeguards posted red flags along the white sands of Pensacola Beach, where swimming and wading were banned due to high surf and dangerous conditions.

Subtropical Storm Alberto – the first named storm of the 2018 hurricane season – prompted Florida, Alabama, and Mississippi to launch emergency preparations Saturday. Rough conditions were expected to roil the seas off the eastern and northern Gulf Coast region through Tuesday.

This article contains information from the Associated Press.