Right now
The most recent data we hold from SPC arrived 2 hours ago, and this point is in it.
72 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 93 recorded within 20 km of this point since 15 March 2026 — 70 others scored the same. Another comparable one was recorded here earlier the same day. 72 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
2 recorded sources include SPC; independence is not established by this count.
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 | 0.54/1 |
| Coordinates | 38.8600, -102.9500 |
| Nearest City | Cimarron Hills (152 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-09-21T05:10:41.348Z |
| 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: 2026-09-21T05:10:41.348Z.
First archived: 2026-09-21T03:32:42.121Z. Material modification: 2026-09-21T05:15:25.007Z.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
2026-09-21T05:15:25.007Z · data_change
Index 28 → 28; severity high → high; version 5 → 5.
2026-09-21T05:04:40.258Z · data_change
Index 28 → 28; severity high → high; version 5 → 5.
2026-09-21T04:59:13.393Z · data_change
Index 28 → 28; severity high → high; version 5 → 5.
2026-09-21T04:53:50.776Z · data_change
Index 28 → 28; severity high → high; version 5 → 5.
2026-09-21T04:48:27.537Z · data_change
Index 28 → 28; severity high → high; version 5 → 5.
2026-09-21T04:43:05.007Z · data_change
Index 28 → 28; severity high → high; version 5 → 5.
2026-09-21T04:37:42.127Z · data_change
Index 28 → 28; severity high → high; version 5 → 5.
2026-09-21T04:32:18.942Z · data_change
Index 28 → 28; severity high → high; version 5 → 5.
2026-09-21T04:26:55.114Z · data_change
Index 28 → 28; severity high → high; version 5 → 5.
2026-09-21T04:16:08.850Z · data_change
Index 28 → 28; severity high → high; version 5 → 5.
2026-09-21T04:10:47.116Z · data_change
Index 28 → 28; severity high → high; version 5 → 5.
2026-09-21T04:05:25.539Z · data_change
Index 28 → 28; severity high → high; version 5 → 5.
2026-09-21T04:00:04.169Z · data_change
Index 28 → 28; severity high → high; version 5 → 5.
2026-09-21T03:54:41.989Z · data_change
Index 28 → 28; severity high → high; version 5 → 5.
2026-09-21T03:49:19.962Z · data_change
Index 28 → 28; severity high → high; version 5 → 5.
2026-09-21T03:43:37.973Z · data_change
Index 28 → 28; severity high → high; version 5 → 5.
2026-09-21T03:38:14.859Z · 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) |
| Iem TypeSummary | H |
| Iem Magnitude | 0.7 |
| Iem Unit | Inch |
| Iem City | Stratton |
| Iem County | Kit Carson |
| Iem State | CO |
| Iem Wfo | GLD |
| Iem Remark | Spotter reported dime size hail near Stratton, CO. |
| MergedSources | [{"id":"iem_H_39.300_-102.600_1789959000000","source":"iem","severity":"low","severityValue":25,"timestamp":1789959000000,"latitude":39.3,"longitude":-102.6}] |
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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