A flash flood warning is in effect until 6:45 p.m. Tuesday for Cumberland, Dauphin, Lancaster, Lebanon and York counties.

Forecasters say a few inches of rain could fall during a short time span, causing roads to get quickly flooded and rivers, streams and creeks to overflow.

A few showers and storms will start to fire up midday. But it's really later this afternoon and evening that storms will become a bit more widespread and heavier, especially off to the south. This moves across Delaware later tonight with heavy rain downpours triggered even further north up toward the city.