Boulder, CO

Hail map for Boulder, CO — June 17, 2025

NOAA radar detected hail up to 1.00″ — quarter size — within 5 miles of Boulder on June 17, 2025.

Hail swath map for Boulder, CO on June 17, 2025 showing 1.00 inch hail.
Max hail size
1.00″
quarter
Impact rating
3/10
from stone size
Size bands over the city
1
distinct radar bands
Measured on the ground
1.00″
7.5 mi away · Trained Spotter

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 Boulder 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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Other towns hit on June 17, 2025

Wichita, KS2.00″Fort Collins, CO1.50″Greeley, CO1.50″Bartlesville, OK1.50″Windsor, CO1.50″Ponca City, OK1.50″Derby, KS1.50″Evans, CO1.50″Thornton, CO1.00″Westminster, CO1.00″Loveland, CO1.00″Broomfield, CO1.00″
Every Colorado city hit on June 17, 2025 →

Other hail dates for Boulder

July 24, 20261.00″June 21, 20261.00″July 11, 20251.00″May 30, 20241.50″July 31, 20231.00″July 28, 20231.00″
Every storm over Boulder →

What people on the ground measured in Boulder, CO on June 17, 2025

8 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.

  • 1.00″ quarter size Trained Spotter
    2 WNW Lafayette, CO · 7.5 mi away1:48 PM MDTBoulder County
  • 1.00″ quarter size Public
    1 W Erie, CO · 10.7 mi away1:57 PM MDTBoulder County

    Report from mPING: Quarter (1.00 in.).

  • 1.00″ quarter size Public
    2 W Broomfield, CO · 11.2 mi away1:57 PM MDTBroomfield County

    Report from mPING: Quarter (1.00 in.).

  • 1.00″ quarter size Public
    1 NE Broomfield, CO · 12.6 mi away1:57 PM MDTBroomfield County

    Report from mPING: Quarter (1.00 in.).

  • 0.75″ penny size Public
    1 NE Lafayette, CO · 10.2 mi away3:53 AM MDTBoulder County

    Report from mPING: Dime (0.75 in.).

  • 0.75″ penny size Public
    1 NE Lafayette, CO · 10.2 mi away1:52 PM MDTBoulder County

    Report from mPING: Dime (0.75 in.).

  • 0.75″ penny size Public
    1 W Erie, CO · 10.7 mi away2:23 AM MDTBoulder County

    Report from mPING: Dime (0.75 in.).

  • 0.75″ penny size Public
    1 NW Erie, CO · 11.8 mi away1:55 PM MDTWeld County

    Report from mPING: Dime (0.75 in.).

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

Boulder hail on June 17, 2025

NOAA radar estimated stones up to 1.00 inches — quarter size — within about 5 miles of Boulder that day, across 1 distinct size band. Sizes vary street to street inside a single swath.

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