United States · October 20, 2026

Hail map — October 20, 2026

NOAA radar detected hail of an inch or more over 4 cities across 1 state on October 20, 2026. The largest stones — 1.50″, half dollar size — fell over Maricopa, AZ.

Hail swath map for Maricopa, AZ on October 20, 2026 showing 1.50 inch hail.
Largest rendered swath of the day: Maricopa, AZ — 1.50″ hail. Each city below has its own map for this storm.
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States hit
1
Cities hit
4
Largest stone
1.50″
half dollar size
Impact rating
5/10
from stone size

Sizes come from NOAA radar, which runs about ±0.25″ against ground truth. It is canvass-targeting quality, not claim evidence.

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States hit on October 20, 2026

Every state where NOAA radar put an inch or more of hail over a city that day, biggest stone first.

What people on the ground measured in the US on October 20, 2026

7 reports filed with the National Weather Service — 4 from trained observers or officials. These are measured stones, not radar estimates, so they are the closest thing to proof that hail actually reached the ground.

  • 2.00″ hen egg size Trained Spotter
    3 ENE Mesa, AZ10:25 PM MSTMaricopa County

    Photo of a pile of hail stones with diameters around 1-2 inches.

  • 1.00″ quarter size Trained Spotter
    3 W Gilbert, AZ10:10 PM MSTMaricopa County

    Dime to quarter size at AZ Ave and Elliot in Chandler.

  • 1.00″ quarter size Public
    3 SW Mesa, AZ10:10 PM MSTMaricopa County

    Report from mPING: Quarter (1.00 in.).

  • 1.00″ quarter size Public
    3 ENE Mesa, AZ10:22 PM MSTMaricopa County

    Photo of measured 1-inch hail stone.

  • 0.88″ penny size Trained Spotter
    3 NW Chandler, AZ10:05 PM MSTMaricopa County
  • 0.75″ penny size Trained Spotter
    3 NW Chandler, AZ10:05 PM MSTMaricopa County

    Estimated 1/2-3/4 inch sized hail and the hail rapidly accumulated.

  • 0.50″ penny size Public
    2 W Chandler, AZ10:06 PM MSTMaricopa County

    Report from mPING: Half-inch (0.50 in.).

These are verified ground reports, updated 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

US hail on October 20, 2026

NOAA radar put hail of an inch or more over 4 cities across 1 state on October 20, 2026. The largest stones — 1.50 inches, half dollar size — were over Maricopa, AZ. Every state hit is listed on this page, and every city under it.

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