Pennsylvania · April 4, 2025

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.

Hail swath map for Philadelphia, PA on April 4, 2025 showing 1.00 inch hail.
Swath over Philadelphia on April 4, 20251.00″ hail. Each city below has its own map for this storm.
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.

Roofing contractors

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Homeowners

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This page covers Pennsylvania as a whole. Check your own address to see every storm on record for your roof — the date and the stone size for each one — and we'll email you the full report to keep.

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What people on the ground measured in Pennsylvania on April 4, 2025

6 reports filed with the National Weather Service1 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 Public
    Brookhaven, PA4:47 AM EDTDelaware County

    Also estimated 65 mph wind gusts.

  • 1.00 quarter size Public
    Swarthmore, PA4:54 AM EDTDelaware County

    Quarter sized hail.

  • 1.00 quarter size ASOS
    Philadelphia 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 Public
    1 W Folsom, PA5:00 AM EDTDelaware County

    Report from mPING: Quarter (1.00 in.).

  • 0.75 penny size Trained Spotter
    Swarthmore, PA4:42 AM EDTDelaware County
  • 0.25 penny size Public
    2 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.

FAQ

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.

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