Every severe weather report published for Northumberland County, Pennsylvania, newest first.
The National Weather Service has extended a Flood Watch for 36 central Pennsylvania counties, including Warren, McKean, and Potter, through Thursday evening.
The National Weather Service warns that hot temperatures and high humidity may cause heat illnesses across south central Pennsylvania from 11 AM to 8 PM EDT Thursday, September 3, 2026, when the advisory expires.
The National Weather Service has issued a Flood Watch for parts of central Pennsylvania from noon EDT today through late tonight.
The National Weather Service warns of hazardous driving conditions due to reduced visibility in dense fog across central Pennsylvania, including Warren, McKean, and Potter counties.