Hail in Thornton, CO on June 21, 2023
Radar-estimated up to 2" (hen egg size) · 1 ground report
Weather radar estimated hail of up to 2" (hen egg size) over Thornton between 6:44 PM and 7:29 PM, from 20 separate radar hail signatures inside the town. On the ground, 1 report was filed in Thornton; the largest measured 1" (quarter size).
Ground reports filed in Thornton
| Time | Hail size | Source |
|---|---|---|
| time not given | 1" (quarter size) | NOAA Storm Events (public) |
What hen egg-size hail does to a roof
Hail this large routinely cracks and punctures asphalt shingles, dents metal vents and gutters, and can break skylights. Damage is often visible from the ground, but bruised shingles that look intact can still fail early. Radar describes the storm, not your shingles: the only way to know what a particular roof took is an inspection. Most homeowner policies set a deadline for reporting storm damage, so check your policy.
Every home inside a storm's radar footprint, scored by roof age, material and hail history, sold to a few roofers only so you are not the twentieth truck on the street.
Other Colorado towns hit on June 21
- Evergreen, CO · Jun 21, 2023radar up to 3.25" (teacup size) · 2 reports
- Morrison, CO · Jun 21, 2023radar up to 3.25" (teacup size) · 1 report
- Black Forest, CO · Jun 21, 2023radar up to 3" (teacup size)
- Colorado Springs, CO · Jun 21, 2023radar up to 3" (teacup size)
- Denver, CO · Jun 21, 2023radar up to 2.5" (tennis ball size) · 4 reports
- Falcon, CO · Jun 21, 2023radar up to 2.5" (tennis ball size)
- Fountain, CO · Jun 21, 2023radar up to 2.5" (tennis ball size)
- Fort Collins, CO · Jun 21, 2023radar up to 2" (hen egg size) · 1 report
- Conifer, CO · Jun 21, 2023radar up to 1.75" (golf ball size) · 1 report
- Pine, CO · Jun 21, 2023radar up to 1.75" (golf ball size)
- Broomfield, CO · Jun 21, 2023radar up to 1.5" (ping-pong ball size)
- Fort Lupton, CO · Jun 21, 2023radar up to 1.5" (ping-pong ball size)
Other hail days in Thornton
- September 6, 2026radar up to 1.25" (half dollar size)
- June 8, 2026radar up to 1.5" (ping-pong ball size)
- June 17, 2025radar up to 2" (hen egg size) · 7 reports
- June 1, 2025radar up to 1.25" (half dollar size)
- August 6, 2024radar up to 1.25" (half dollar size)
- July 20, 2024radar up to 1" (quarter size) · 1 report
- May 30, 2024radar up to 3.5" (teacup size) · 10 reports
- August 3, 2023radar up to 1.25" (half dollar size) · 2 reports
Radar sizes are estimates from NEXRAD hail signatures (NOAA Severe Weather Data Inventory) for the largest stones in a storm cell, not a measurement at any one home. Ground reports are National Weather Service local storm reports and the NOAA Storm Events Database, as filed. Town-level data only; this page shows no addresses and no homeowner information.