Tornado Rating unknown
2 WSW Thurman Washington County
“Brief Tornado lasted one minute. (BOU)”
— NOAA / SPC storm report
/ Storm field report · Kit Carson
Hail in Flagler · May 21, 2026
The estimated-size surface reached 2.25" aloft; NEXRAD logged no point detections over Flagler that day. At 2.25" — tennis ball — this is a severe hail signal associated with roof damage. Open it on the live map to see the swath over the streets.
A tornado was also reported to the National Weather Service during this storm. The ground reports below show where it was filed.
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Peak hail signal 2.25" ≈ tennis ball · radar-estimated size aloft
Homes in the hail footprint 407
Ground reports 7 4 hail · 3 tornado
Radar surfaces 1 Estimated size only
Convective day · May 21, 2026 · noon–noon UTC
Severity
The 4th most severe storm Flagler has seen in the last 12 months
Composite score · 6.2 / 10
Storm severity score
Overview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.
6.2 /10
- Peak hail signal
- 56 /100
- Homes exposed
- 52 /100
- Ground truth
- 100 /100
Largest radar-indicated size — a signal of damage potential, not confirmation.
How many homes sit inside the storm's footprint.
Independent storm reports filed with the NWS.
Evidence / storm surfaces
How Flagler saw the hail — from two instruments
May 21, 2026 · Flagler, CO
Two instruments, one storm: NEXRAD logs the point signatures it detected overhead, while the estimated-size surface models how large the hail aloft could have grown. Agreement between them is not guaranteed — the gaps are where the model ran ahead of, or behind, the detections.
Radar-estimated hail size Surface resolved
Estimated size field Radar-estimated maximum hail size across the swath, modeled from radar aloft. It reflects the biggest stone the storm could support, which may differ from what actually fell.
Max size
2.25"
Only the radar-estimated size surface resolved for May 21, 2026 — this storm produced no NEXRAD point detections over Flagler, so there is one map to show, not two.
The storm in context
Where May 21, 2026 sits in Flagler's hail record.
This was Flagler's 3rd recorded hail day, arriving 4 days after the May 17, 2026 storm. By severity it ranks 4th of the 16 storms we have logged here. Radar put the day's largest stone over Flagler at 2.25" — radar-estimated size aloft.
The May 21, 2026 convective day was bigger than Flagler: the same system put hail over 120 other tracked cities, 20 of them in Colorado. Nearest: Cope (15 miles northeast, up to 1.75"); Vona (15 miles southeast, up to 1.25"); Arriba (17 miles southwest, up to 2.25").
These maps are stills. In the app this date is one of 16 Flagler storm dates on a live map — both surfaces, the reports, and a replay — and the same map is where you draw the swath. This page rebuilds nightly.
Ground reports
What people on the ground reported
7 reports filed with the NWS
These are storm reports filed with the National Weather Service and released through the NOAA Storm Prediction Center — public-domain observations from spotters, the public, and NWS surveys. We quote each one exactly as filed.
Tornado reports
3 reports Tornado Rating unknown
3 WNW Thurman Washington County
“Brief ground circulation. Report via NWSChat. (BOU)”
— NOAA / SPC storm report
Tornado Rating unknown
3 WSW Thurman Washington County
“Tornado lasted 4 minutes. (BOU)”
— NOAA / SPC storm report
Hail reports
4 reports Hail size 3"
1 S Thurman Washington County
“Report from mPING: Tea Cup (3.00 in.). (BOU)”
— NOAA / SPC storm report
Hail size 2.75"
1 S Thurman Washington County
“Report from mPING: Baseball (2.75 in.). (BOU)”
— NOAA / SPC storm report
Hail size 2.75"
2 WNW Thurman Washington County
“(BOU)”
— NOAA / SPC storm report
Hail size 1.5"
9 SE Thurman Kit Carson County
“Report from mPING: Ping Pong Ball (1.50 in.). (GLD)”
— NOAA / SPC storm report
Storm forensics
How the storm moved
Timing and place names from NOAA ground reports
Read from the arrival times and locations of the NOAA ground reports, not a radar-measured storm track.
The storm tracked southeast at roughly 20 mph, based on the timing of ground reports.
Hail was reported over 32 minutes, from to .
Reports came from Thurman — beyond Flagler itself.
Severe hail signal
What 2.25" hail means for Flagler roofs.
Two-inch-plus hail is capable of puncturing shingles, breaking skylights or windows, and heavily denting soft materials. The strongest radar bands warrant prompt inspection, but neither the signal nor the footprint confirms damage at a specific address.
Radar reading · not confirmed damage
Roofing exposure
What this storm is worth to a roofer.
407 homes × $12,000 avg. claim
Potential roof exposure
$4.9M
Potential roof exposure — 407 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
- Illustrative jobs
- 2 jobs
- Illustrative work
- ~$30K
Close just 0.5% of the 407 homes in this footprint at the average $15,000 roof job. Illustrative math, not a projection — your results depend on your outreach and how the market responds.
Claim window
May 2028
Claims from this storm can typically be filed until around May 2028 — the window to reach these homeowners while it's still open. Deadlines vary by policy and state.
Names and phones for every home in the footprint: at most $85 on top of the $150 plan.
Flagler hail history
Other storms in Flagler.
16 recorded storm days in Flagler, CO
Estimated-size surface Storm date Flagler / CO
Aug 26, 2026
0.5" Estimated 0.5"
No ground reports filed Open report →
Estimated-size surface Storm date Flagler / CO
Aug 19, 2026
4" Estimated 4"
No ground reports filed Open report →
Estimated-size surface Storm date Flagler / CO
Jul 28, 2026
1" Signatures 1" Estimated 0.5"
No ground reports filed Open report →
Estimated-size surface Storm date Flagler / CO
Jul 22, 2026
2.5" Signatures 2.5" Estimated 1.75"
No ground reports filed Open report →
Estimated-size surface Storm date Flagler / CO
Jul 9, 2026
0.75" Signatures 0.75"
No ground reports filed Open report →
Estimated-size surface Storm date Flagler / CO
Jul 7, 2026
1" Signatures 1" Estimated 0.5"
No ground reports filed Open report →
Estimated-size surface Storm date Flagler / CO
Jul 4, 2026
4" Signatures 4" Estimated 1"
No ground reports filed Open report →
Estimated-size surface Storm date Flagler / CO
Jul 3, 2026
4" Signatures 4" Estimated 3.75"
1 ground report Open report →
Estimated-size surface Storm date Flagler / CO
Jun 26, 2026
2.5" Signatures 2.5" Estimated 1.25"
No ground reports filed Open report →
Estimated-size surface Storm date Flagler / CO
Jun 24, 2026
1.25" Estimated 1.25"
1 ground report Open report →
Estimated-size surface Storm date Flagler / CO
Jun 21, 2026
1" Estimated 1"
No ground reports filed Open report →
Estimated-size surface Storm date Flagler / CO
Jun 20, 2026
0.5" Estimated 0.5"
No ground reports filed Open report →
Estimated-size surface Storm date Flagler / CO
Jun 8, 2026
2.5" Signatures 2.5" Estimated 2.5"
1 ground report Open report →
Estimated-size surface Storm date Flagler / CO
May 17, 2026
2" Signatures 2" Estimated 1.25"
No ground reports filed Open report →
Estimated-size surface Storm date Flagler / CO
May 16, 2026
1.75" Signatures 1.75" Estimated 1"
No ground reports filed Open report →
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Set your territory and alerts today. When hail hits, use Overview to choose your streets and get moving.
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A storm day here is a convective day — it runs from noon to noon
UTC, so late-night hail is grouped with the afternoon storm that
spawned it rather than split across two calendar dates. Ground
reports are public-domain observations from the NOAA Storm
Prediction Center. Radar tells you where to look. Only an inspection confirms damage at an address. Last updated Aug 27, 2026.