Right now
The most recent data we hold from SPC arrived 1 minute ago, and this point is in it.
89 other detections within 20 km in the last 24 hours, the nearest <1 km from here.
Reported by SPC today.
No stronger detection stands among the 110 recorded within 20 km of this point since 15 March 2026 — 87 others scored the same. Another comparable one was recorded here earlier the same day. 89 more were recorded here in the fortnight before it.
What the source measured
SPC reported: Hail 275 in near 4 NE Wild Horse, Cheyenne, CO. Social media reports of baseball size hail... some hailstones potentially larger. Damaged windshield of a spotters vehicle. (GLD)
Nearby, since 15 March 2026
- September 20, 2026 · score 28 · 9.9 km
- September 20, 2026 · score 28 · 20.4 km
- June 27, 2026 · score 22 · 23.8 km
How we know
One source: SPC. Not yet confirmed by a second, independent source.
Our own score for this event is 28 out of 100.
This is our versioned heuristic index, not source severity or a calibrated probability. Urban PEI does not count unique people.
Computed under scoring rules v5. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | High |
| Calamity Score (ours) | 28 / 100 |
| Legacy data-support index | 0.47/1 |
| Coordinates | 38.8600, -102.9500 |
| Nearest City | Cimarron Hills (152 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-09-21T09:37:12.982Z |
| Source | https://www.spc.noaa.gov/climo/reports/today.html |
Physical priority index · v5. Heuristic priority, not calibrated probability, predictive accuracy or damage. The legacy data-support index combines assigned source support and field availability. Urban PEI is distance-weighted and does not count unique people; zero does not establish that nobody is present. Model cards.
Source and revision timeline
Source: spc. Occurrence: 2026-09-21T09:37:12.982Z.
First archived: 2026-09-21T08:28:54.773Z. Material modification: 2026-09-21T09:39:16.231Z.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
2026-09-21T09:39:16.231Z · data_change
Index 28 → 28; severity high → high; version 5 → 5.
2026-09-21T09:33:54.252Z · data_change
Index 28 → 28; severity high → high; version 5 → 5.
2026-09-21T09:28:31.535Z · data_change
Index 28 → 28; severity high → high; version 5 → 5.
2026-09-21T09:23:07.414Z · data_change
Index 28 → 28; severity high → high; version 5 → 5.
2026-09-21T09:17:45.418Z · data_change
Index 28 → 28; severity high → high; version 5 → 5.
2026-09-21T09:07:01.614Z · data_change
Index 28 → 28; severity high → high; version 5 → 5.
2026-09-21T09:01:41.236Z · data_change
Index 28 → 28; severity high → high; version 5 → 5.
2026-09-21T08:56:19.195Z · data_change
Index 28 → 28; severity high → high; version 5 → 5.
2026-09-21T08:50:54.785Z · data_change
Index 28 → 28; severity high → high; version 5 → 5.
2026-09-21T08:45:32.274Z · data_change
Index 28 → 28; severity high → high; version 5 → 5.
2026-09-21T08:40:09.026Z · data_change
Index 28 → 28; severity high → high; version 5 → 5.
2026-09-21T08:34:43.988Z · data_change
Index 28 → 28; severity high → high; version 5 → 5.
Score Breakdown
Technical Details
| ReportType | hail |
| Speed | 275 |
| Location | 4 NE Wild Horse |
| County | Cheyenne |
| State | CO |
| Comments | Social media reports of baseball size hail... some hailstones potentially larger. Damaged windshield of a spotters vehicle. (GLD) |
Safety Information
Always follow official guidance from your local emergency management agency. This platform provides scientific monitoring data and is not a substitute for official warnings. If you are in immediate danger, contact your local emergency number.
Series begins 8 March 2026. Comparisons refer to that period only. Collection gap: 14-26 August 2026.
This data is aggregated algorithmically from scientific sources. Not a replacement for official emergency warnings.
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