Pennsylvania hail map — April 4, 2025
NOAA radar detected hail of an inch or more over 11 Pennsylvania cities on April 4, 2025. The largest stones — 1.00″, quarter size — fell over Philadelphia.

- Cities hit
- 11
- in Pennsylvania
- Largest stone
- 1.00″
- quarter size
- Impact rating
- 3/10
- from stone size
Sizes come from NOAA MRMS radar (MESH), which runs about ±0.25″ against ground truth. It is canvass-targeting quality, not claim evidence.
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Pennsylvania cities hit on April 4, 2025
What people on the ground measured in Pennsylvania on April 4, 2025
6 reports filed with the National Weather Service — 1 from trained spotters or officials. These are measured stones, not radar estimates, so they are the closest thing to proof that hail actually reached the ground.
- 1.25″ half dollar size PublicBrookhaven, PA4:47 AM EDTDelaware County
Also estimated 65 mph wind gusts.
- 1.00″ quarter size PublicSwarthmore, PA4:54 AM EDTDelaware County
Quarter sized hail.
- 1.00″ quarter size ASOSPhiladelphia Internatio, PA5:00 AM EDTPhiladelphia County
Airport observer reported 1 inch hail at PHL. The period of the Hail event was 11 minutes.
- 1.00″ quarter size Public1 W Folsom, PA5:00 AM EDTDelaware County
Report from mPING: Quarter (1.00 in.).
- 0.75″ penny size Trained SpotterSwarthmore, PA4:42 AM EDTDelaware County
- 0.25″ penny size Public2 N Blake, PA5:00 AM EDTChester County
Reports come from the National Weather Service Local Storm Report feed, ingested every 15 minutes. A report records where the observer was, not the full extent of the swath — treat it as evidence about the storm, not about any one roof.
Other Pennsylvania hail days
Pennsylvania hail on April 4, 2025
NOAA radar put hail of an inch or more over 11 Pennsylvania cities that day. The largest stones — 1.00 inches, quarter size — were over Philadelphia. Every city hit is listed above with its own stone size.