Severe thunderstorms and flooding downpours are possible in the Philly region Tuesday

Rainfall this summer has been maddeningly capricious, but this time it appears that the entire region is going to win some share of the rain lottery proceeds, wanted or not.“I think this is the type of setup where everyone is going to get rain,” said Marc Chernard, senior branch forecasters with the federal Weather Prediction Center, in College Park, Md. The center had Philadelphia and its neighboring counties targeted for “excessive rainfall” potential.The National Weather Service Office in Mount Holly has a flash-flood watch in effect unitl 2 p.m. Wednesday, with a general 1 to 3 inches expected across the region.For flood potential, what would matter would be the rainfall rates, and it’s possible the skies could wring out localized amounts of 3 inches an hour, said Chernard.The national