Latest Forecast

Light, northeasterly flow off the Atlantic will keep low clouds locked in place across northern MD and southeastern PA this afternoon. Due to the clouds and an isolated shower or two, high temperatures will be around 5 degrees below average. An area of high pressure should then build into the Northeast during the middle of the week and promote drier conditions on Wednesday. Clouds will give way to partial sunshine by the early-afternoon hours, and high temperatures will be back in the low-to-mid 80s. The high pressure system will then shift into the western Atlantic late this week. On its backside, south-southwesterly winds will pump warmer and even more humid air into the Lower Susquehanna Valley on Thursday. In addition, a disturbance tracking eastward through the mid-Atlantic States will trigger scattered showers and thunderstorms, especially during the afternoon and early-evening hours. Severe weather is not anticipated, but the storms will be slow-moving and produce locally heavy downpours. Flash flooding of low-lying, urban- and poor-drainage areas may occur.