Hail in Calhan · Sep 20, 2026
The estimated-size surface reached 0.75" aloft; NEXRAD logged no point detections over Calhan that day. Open it on the live map to see the swath over the streets.
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Convective day · Sep 20, 2026 · noon–noon UTC
Severity
The 13th most severe storm Calhan has seen in the last 12 months
Overview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.
- Peak hail signal
- 19 /100
- Homes exposed
- 53 /100
- Ground truth
- 0 /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 Calhan saw the hail — from two instruments
Each storm gets two readings: the radar signatures NEXRAD recorded as the cells passed overhead, and a modeled estimate of hail size in the air. They are independent surfaces, so a mismatch between them is expected — and worth reading.
Estimated size field Radar-estimated hail size over the swath. The model reports the biggest stone the storm could sustain in the air; what actually fell may have been smaller.
Only the radar-estimated size surface resolved for Sep 20, 2026 — this storm produced no NEXRAD point detections over Calhan, so there is one map to show, not two.
The storm in context
Where Sep 20, 2026 sits in Calhan's hail record.
This was Calhan's 26th recorded hail day, arriving 1 day after the Sep 19, 2026 storm. By severity it ranks 13th of the 26 storms we have logged here. Radar put the day's largest stone over Calhan at 0.75" — radar-estimated size aloft.
The Sep 20, 2026 convective day was bigger than Calhan: the same system put hail over 253 other tracked cities, 33 of them in Colorado. Nearest: Ramah (11 miles east, up to 0.75"); Elbert (15 miles northwest, up to 1.5"); Kiowa (23 miles northwest, up to 2").
These maps are stills. In the app this date is one of 26 Calhan 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
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.
For this storm over Calhan, the NWS report log is empty — a common outcome, since ground reports only happen when someone witnesses the hail and takes the time to call it in. The detection record for the date lives in the radar maps above.
Near the severe threshold
What 0.75" hail means for Calhan roofs.
A signal this size sits near the National Weather Service severe threshold. Aging shingles and soft metals such as vents, flashing, and gutters may be more vulnerable; roof age, wind, and material condition all matter, and only an inspection can confirm damage.
Radar reading · not confirmed damage
Roofing exposure
What this storm is worth to a roofer.
Potential roof exposure
$5.1M
Potential roof exposure — 422 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 422 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
September 2028
Claims from this storm can typically be filed until around September 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 $89 on top of the $150 plan.
Calhan hail history
Other storms in Calhan.
Estimated-size surface Sep 19, 2026
0.75"
Estimated-size surface Sep 18, 2026
0.5"
Estimated-size surface Aug 27, 2026
1.25"
Estimated-size surface Aug 26, 2026
0.5"
Estimated-size surface Aug 22, 2026
1"
Estimated-size surface Aug 19, 2026
1.25"
Estimated-size surface Aug 16, 2026
1.25"
Estimated-size surface Aug 15, 2026
0.5"
Estimated-size surface Aug 14, 2026
1"
Estimated-size surface Jul 31, 2026
2.75"
Estimated-size surface Jul 28, 2026
3.5"
Estimated-size surface Jul 22, 2026
Estimated-size surface Jul 10, 2026
1"
Estimated-size surface Jul 8, 2026
1"
Estimated-size surface Jun 26, 2026
1.5"
Estimated-size surface Jun 23, 2026
2"
Estimated-size surface Jun 6, 2026
0.5"
Estimated-size surface Jun 5, 2026
1"
Estimated-size surface Jun 1, 2026
1"
Estimated-size surface May 17, 2026
0.75"
Estimated-size surface May 16, 2026
0.75"
NEXRAD surface May 15, 2026
0.5"
Estimated-size surface Apr 30, 2026
0.5"
Estimated-size surface Apr 27, 2026
0.5"
Estimated-size surface Jan 14, 2026
0.5"The next storm won’t wait for you.
Set your territory and alerts today. When hail hits, use Overview to choose your streets and get moving.
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