Tropical Storm Ophelia to bring heavy rain and high winds to the Philly region. A flood warning is up for the Shore.

A hybrid rainstorm that gained a new level of celebrity Friday when it was declared Tropical Storm Ophelia promises to generate daylong downpours throughout the Philadelphia region Saturday, and gusts as high as 50 mph at the Shore, with coastal flooding and beach-eroding waves.

And it might spoil parts of Sunday.

“It’s going to be quite nasty,” said Alex DaSilva, a meteorologist with AccuWeather Inc. Flood warnings were up for Shore counties from noon until 8 p.m. Saturday, and a flood advisory along the Delaware River from 7 p.m. until midnight. A wind advisory also was in effect at the Shore.

Early Saturday Ophelia crossed the North Carolina coast, becoming the first named storm of the season to make landfall on the Atlantic Coast.

But even if it doesn’t live up to its name, Ophelia already has had a tremendous impact around here, forcing a rash of closings, cancellations, and postponements.

Longwood Gardens — which recently lost several days when it shut down during the search for escaped convicted murderer Danilo Cavalcante, who had been spotted on its trail cameras — decided to close Saturday and cancel its wine and jazz festival. Rains threatened several other events, including the XPoNential Music Festival — not to mention the Phillies-Mets game, due to start at 4:05 p.m. Saturday at Citizens Bank Park.

And it’s quite possible that effects of Ophelia will linger into Sunday, when it will have lost its tropical status and become a rainstorm with a name.

» READ MORE: These weekend events are canceled due to Tropical Storm Ophelia

After landfall, it was forecast to move north and approach the Maryland-Pennsylvania border just west of Philadelphia Sunday, said Dean Iovino, a lead meteorologist at the National Weather Service Office in Mount Holly.

Said Sarah Johnson, the office’s warning coordination meteorologist: “The exact track isn’t as big a concern.” It is almost certain to inundate the region with two to four inches of windswept rain.

In fact, despite some tweaking of the tracks, the forecasts have pretty much held serve the last few days. “Nothing’s really changed except its name,” said Iovino.

Said AccuWeather’s DaSilva, “The name gets the attention, and the clicks.”

Iovino said the heaviest rains likely would fall at the Shore Saturday morning, and then pivot to the immediate Philadelphia area during the afternoon and evening.

» READ MORE: A hyperactive hurricane season has spared Philly and the Atlantic Coast, but the luck may not last

The winds would be a complicating factor, and they could gust to 40 mph along the I-95 corridor.

“The winds will be coming with the rain, and we still have a lot of leaves on the trees. That could increase the risk of power outages,” Johnson said.

The gusts would be strongest at the Shore, as high as 50 mph, forecasters said. The beaches are going to lose some sand, with onshore winds due to continue until midafternoon Sunday.

Fortunately, the tides won’t be getting an extra tug from the moon, which is between its full and new phases that would have increased its influence. “That would be the saving grace here,” said DaSilva.

The moon’s cooperation is “helpful,” said Johnson, but “we’re still very likely to see tidal and coastal flooding.”

The rains were due to start late Friday night at the Shore and during the early morning hours of Saturday inland. Heavy rains may continue into Sunday around Philly, said the weather service’s Iovino. And showers are possible at the Shore.

» READ MORE: A few years back, the region endured a siege of tropical-remnant storms

It was unclear how the forecast may affect events scheduled for Sunday, including the Parkway Run and Walk, a fundraiser for Children’s Hospital of Philadelphia, and the Puerto Rican Day Parade.

The forecast already doomed Saturday’s St. James Philadelphia Polo Classic and the South Philly Sausage Fest, which were canceled.

As for the Phillies’ chances of playing this weekend, “Saturday is going to be tough,” said Bobby Matrich of EPAWA Weather Consulting, which provides forecasting services to the team. He said they have a better shot at playing Sunday, although the 1:05 p.m. start time might get pushed back.

On a positive note, portions of Chester and Montgomery Counties, along with parts of Atlantic, Burlington, Cape May, and Ocean Counties appeared in the “abnormally dry” zones in the weekly U.S. Drought Monitor updates posted Thursday.

That designation might not last long.