At 4:20 p.m. on Sunday, the National Weather Service released an updated tornado watch in effect until 7 p.m. for Cumberland, Franklin, Fulton, Lycoming, Perry, Snyder and Union counties.

The Storm Prediction Center has issued a "slight risk" for severe weather impacting the following counties in Pennsylvania on Monday: Accumulations will range from a few tenths of an inch up to 1 inch in areas affected by heavy thunderstorms. Storms are expected to occur between 3 p.m. and 10 p.m.

A FIRST ALERT will be in effect for the Philadelphia region late Monday afternoon into the evening due to storms that are expected to bring heavy rain, flooding and a possible isolated tornado.

Storms are forecasted to roll in between 3 p.m. and 10 p.m. on Monday. Following this activity, a cold front is expected to pass, bringing a transition to a clearer atmosphere as rain tapers off by midnight. This shift will result in cooler temperatures, with the mercury dropping into the 40s overnight.

Crawford County residents should be prepared for a severe weather exercise this month. The National Weather Service announced that they will be conducting Crawford County’s

FIRST ALERT: Storms later tonight through Monday morning. Damaging winds are possible (midnight through 4 a.m.) and tornado risk. That line will move toward our region through the late evening and, if it holds together, could bring us a quick-moving shot of strong to severe storms right around midnight.

As Pennsylvania braces for an impending storm, residents are urged to stay alert. The National Weather Service (NWS) has issued a hazardous weather outlook, threatening over three dozen counties with severe rain and possible thunderstorms starting this weekend.

A FIRST ALERT is in effect for the Philadelphia region late Monday afternoon into the evening due to storms that are expected to bring heavy rain, flooding and a possible isolated tornado.