Harrisburg, Pa. – Afternoon thunderstorms could bring damaging winds and flash flooding across western Pennsylvania today, especially west of the Blue Ridge, between 3 and 7 p.m., as summer heat builds across the region.
According to the National Weather Service Baltimore/Washington office, scattered strong storms will accompany warmer temperatures this afternoon, with the primary threats being localized flooding and wind damage. Showers began early Tuesday but will intensify later, especially in mountainous areas.
Cities like Chambersburg, Gettysburg, and Waynesboro are at heightened risk, with travel delays and power outages possible during the evening commute. Heat and humidity will surge midweek, with high temperatures reaching the mid-90s on Wednesday and Thursday. Heat index values could top out in the upper 90s, increasing health risks for outdoor workers and vulnerable populations.
By Thursday, a more widespread severe weather system is expected, bringing an increased risk of damaging winds and additional flooding across the state. Residents should secure outdoor items, avoid low-lying flood-prone roads, and keep phones charged in case of power outages.
The National Weather Service warns that Thursday’s storms may bring a more organized and impactful severe event. Additional watches or warnings could be issued midweek.
