Tornado Rating unknown
2 WSW Thurman Washington County
“Brief Tornado lasted one minute. (BOU)”
— NOAA / SPC storm report
Hail in Flagler May 21, 2026
The radar-estimated size surface caught this storm, reaching 2.25" aloft. NEXRAD logged no point detections over Flagler this day. At 2.25" — tennis ball — this is severe, roof-replacing hail: close to every roof inside the footprint becomes a claim candidate.
A tornado was also reported to the National Weather Service during this storm — see the ground reports below.
Largest hailstone
2.25"
≈ tennis ball · radar-estimated size aloft Homes in the hail footprint
407
Ground reports
7
4 hail · 3 tornadoThe 3rd most severe storm Flagler has seen in the last 12 months
Storm severity score
Overview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.
6.2 /10
- Hail size
- 56 /100
- Homes exposed
- 52 /100
- Ground truth
- 100 /100
Largest hailstone — the top predictor of roof damage.
How many homes sit inside the storm's footprint.
Independent storm reports filed with the NWS.
How Flagler saw the hail — from two instruments
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
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.
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 3rd of the 14 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: Arriba (13 miles southwest, up to 2.25"); Cope (15 miles northeast, up to 1.75"); Anton (19 miles northeast, up to 2").
These maps are stills from Flagler's May 21, 2026 storm. In the Overview app the same surfaces are live — radar updating in real time, radar-estimated hail size as it forms, and NWS spotter reports pinned where they're filed — with a radar replay you can scrub back over any past day.
What people on the ground reported
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
Read from the arrival times and locations of the NOAA ground reports,
not a radar-measured storm track.
How the storm moved
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.
What 2.25" hail means for Flagler roofs
Two-inch-plus hail punctures shingles, breaks skylights and windows, and dents anything soft. In the core of a footprint like this, close to every roof is a candidate for an insurance claim. Speed decides who writes those jobs.
What this storm is worth to a roofer
$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
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.
Track hail over Flagler on the live map
Radar updates in real time, spotter reports appear on the map as they're filed, and the full Flagler storm history — this May 21, 2026 storm included — sits underneath. When you're ready, draw this storm's footprint and pull highly accurate homeowner contact information for every address inside it.
Highly accurate contact information starting at $0.23 per address — every contact included. Digital leads cost $15–$40. Start with a 7-day free trial — no credit card required. See pricing
Flagler hail history
← All hail in Flagler 14 recorded storm days in Flagler, CO
Other storms in Flagler
Jul 28, 2026
1" Signatures 1" Estimated 0.5"
No ground reports filed 
Jul 22, 2026
2.5" Signatures 2.5" Estimated 1.75"
No ground reports filed 
Jul 9, 2026
0.75" Signatures 0.75"
No ground reports filed 
Jul 7, 2026
1" Signatures 1" Estimated 0.5"
No ground reports filed 
Jul 4, 2026
4" Signatures 4" Estimated 1"
No ground reports filed 
Jul 3, 2026
4" Signatures 4" Estimated 3.75"
1
ground report 
Jun 26, 2026
2.5" Signatures 2.5" Estimated 1.25"
No ground reports filed 
Jun 24, 2026
1.25" Estimated 1.25"
1
ground report 
Jun 21, 2026
1" Estimated 1"
No ground reports filed 
Jun 20, 2026
0.5" Estimated 0.5"
No ground reports filed 
Jun 8, 2026
2.5" Signatures 2.5" Estimated 2.5"
1
ground report 
May 17, 2026
2" Signatures 2" Estimated 1.25"
No ground reports filed 
May 16, 2026
1.75" Signatures 1.75" Estimated 1"
No ground reports filed
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 surfaces are detections and estimates,
not confirmed damage. Last updated Aug 3, 2026.