Right now
The most recent data we hold from SPC arrived 1 minute ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
7 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 21 recorded within 20 km of this point since 2 April 2026 — 5 others scored the same. Another comparable one was recorded here earlier the same day. 10 more were recorded here in the fortnight before it.
What the source measured
SPC reported: Hail 100 in near 6 NNW Massadona, Moffat, CO. Maximum hail size 1.00 inch... average hail size 0.50 inch. (GJT)
Nearby, since 2 April 2026
- September 18, 2026 · score 16 · 16.2 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 | 0.43/1 |
| Coordinates | 40.3100, -108.6500 |
| Nearest City | Clifton (137 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-09-19T12:08:53.552Z |
| 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: 2026-09-19T12:08:53.552Z.
First archived: 2026-09-19T05:30:59.910Z. Material modification: 2026-09-19T12:13:27.343Z.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
2026-09-19T12:13:27.343Z · data_change
Index 28 → 28; severity high → high; version 5 → 5.
2026-09-19T12:08:06.296Z · data_change
Index 28 → 28; severity high → high; version 5 → 5.
2026-09-19T12:02:43.525Z · data_change
Index 28 → 28; severity high → high; version 5 → 5.
2026-09-19T11:57:22.182Z · data_change
Index 28 → 28; severity high → high; version 5 → 5.
2026-09-19T11:46:36.366Z · data_change
Index 28 → 28; severity high → high; version 5 → 5.
2026-09-19T11:41:16.028Z · data_change
Index 28 → 28; severity high → high; version 5 → 5.
2026-09-19T11:35:55.423Z · data_change
Index 28 → 28; severity high → high; version 5 → 5.
2026-09-19T11:30:36.467Z · data_change
Index 28 → 28; severity high → high; version 5 → 5.
2026-09-19T11:25:13.672Z · data_change
Index 28 → 28; severity high → high; version 5 → 5.
2026-09-19T11:14:29.229Z · data_change
Index 28 → 28; severity high → high; version 5 → 5.
2026-09-19T11:09:07.644Z · data_change
Index 28 → 28; severity high → high; version 5 → 5.
2026-09-19T11:03:42.944Z · data_change
Index 28 → 28; severity high → high; version 5 → 5.
2026-09-19T10:58:19.346Z · data_change
Index 28 → 28; severity high → high; version 5 → 5.
2026-09-19T10:52:55.754Z · data_change
Index 28 → 28; severity high → high; version 5 → 5.
2026-09-19T10:47:34.227Z · data_change
Index 28 → 28; severity high → high; version 5 → 5.
2026-09-19T10:42:12.767Z · data_change
Index 28 → 28; severity high → high; version 5 → 5.
2026-09-19T10:31:30.102Z · data_change
Index 28 → 28; severity high → high; version 5 → 5.
2026-09-19T10:26:09.600Z · data_change
Index 28 → 28; severity high → high; version 5 → 5.
2026-09-19T10:20:50.047Z · data_change
Index 28 → 28; severity high → high; version 5 → 5.
2026-09-19T10:15:28.715Z · data_change
Index 28 → 28; severity high → high; version 5 → 5.
Score Breakdown
Technical Details
| ReportType | hail |
| Speed | 100 |
| Location | 6 NNW Massadona |
| County | Moffat |
| State | CO |
| Comments | Maximum hail size 1.00 inch... average hail size 0.50 inch. (GJT) |
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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