More Thunderstorms Possible Today (Tuesday) Across Eastern Half of Pennsylvania; Timing & Storm Threat Maps

More Thunderstorms Possible Today (Tuesday) Across Eastern Half of Pennsylvania; Timing & Storm Threat Maps

After a rather eventful Monday in many areas, another chance of thunderstorms exists today across the eastern half of Pennsylvania. But first, here’s how our forecast for Monday’s storms did! You’ll notice most of the reports correlate well to the higher threat areas. (This graphic is for verification purposes, not a current forecast)

TIMING FOR TUESDAY’S THUNDERSTORMS

Today’s storms will be pop-up cells, with no clear main line of storms. So the window of opportunity for storms is a bit more broad.

HI-RES NAM FUTURE RADAR

SEVERE THUNDERSTORM THREAT FORECAST FOR TUESDAY (6/27)

Area A: While scattered showers and thunderstorms are expected, only an a few isolated thunderstorms may turn severe in Eastern PA. The primary risks are wind damage and hail.

You may notice some areas in Central PA shaded in the timing forecast are not in any shade on the threat forecast. This is because only ordinary, non-severe thunderstorms are expected in Central PA.

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Josh Adams is the founder and lead forecaster of Pennsylvania Weather Action, a regional forecasting site he launched in 2015. With over a decade of experience analyzing weather patterns across Pennsylvania, his forecasts have reached millions of readers throughout the state. Josh specializes in Pennsylvania’s complex microclimates and terrain-driven weather patterns, providing detailed coverage of severe thunderstorms, winter storms, and flooding events. His forecasting focuses on delivering precise, timely information to help Pennsylvanians stay informed and prepared during impactful weather. Last Updated: March 10, 2026