Right now
The most recent data we hold from SPC arrived 2 hours ago, and this point is in it.
12 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 13 recorded within 20 km of this point since 16 September 2026 — 9 others scored the same. Another comparable one was recorded here earlier the same day. 12 more were recorded here in the fortnight before it.
What the source measured
SPC reported: Hail 100 in near 1 E Sunnyside, Carbon, UT. Trained spotter reported quarter sized hail reported in Sunnyside... UT. (SLC)
Nearby, since 16 September 2026
- September 16, 2026 · score 28 · 4.2 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 | 0.50/1 |
| Coordinates | 39.5500, -110.3900 |
| Nearest City | Spanish Fork (124 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Date | 2026-09-17 — time not reported by the source |
| 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: 2026-09-17 — time not reported.
First archived: 2026-09-17T01:57:21.071Z. Material modification: 2026-09-17T04:16:33.588Z.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
2026-09-17T04:16:33.588Z · data_change
Index 28 → 28; severity high → high; version 5 → 5.
2026-09-17T04:11:11.722Z · data_change
Index 28 → 28; severity high → high; version 5 → 5.
2026-09-17T04:05:52.910Z · data_change
Index 28 → 28; severity high → high; version 5 → 5.
2026-09-17T04:00:35.703Z · data_change
Index 28 → 28; severity high → high; version 5 → 5.
2026-09-17T03:55:14.311Z · data_change
Index 28 → 28; severity high → high; version 5 → 5.
2026-09-17T03:44:34.269Z · data_change
Index 28 → 28; severity high → high; version 5 → 5.
2026-09-17T03:33:50.895Z · data_change
Index 28 → 28; severity high → high; version 5 → 5.
2026-09-17T03:28:31.954Z · data_change
Index 28 → 28; severity high → high; version 5 → 5.
2026-09-17T03:23:10.525Z · data_change
Index 28 → 28; severity high → high; version 5 → 5.
2026-09-17T03:17:48.831Z · data_change
Index 28 → 28; severity high → high; version 5 → 5.
2026-09-17T03:12:28.048Z · data_change
Index 28 → 28; severity high → high; version 5 → 5.
2026-09-17T03:07:07.780Z · data_change
Index 28 → 28; severity high → high; version 5 → 5.
2026-09-17T03:01:30.485Z · data_change
Index 28 → 28; severity high → high; version 5 → 5.
2026-09-17T02:56:09.149Z · data_change
Index 28 → 28; severity high → high; version 5 → 5.
2026-09-17T02:45:28.591Z · data_change
Index 28 → 28; severity high → high; version 5 → 5.
2026-09-17T02:34:46.908Z · data_change
Index 28 → 28; severity high → high; version 5 → 5.
2026-09-17T02:29:27.597Z · data_change
Index 28 → 28; severity high → high; version 5 → 5.
2026-09-17T02:24:07.069Z · data_change
Index 28 → 28; severity high → high; version 5 → 5.
2026-09-17T02:13:27.631Z · data_change
Index 28 → 28; severity high → high; version 5 → 5.
2026-09-17T02:08:08.188Z · data_change
Index 28 → 28; severity high → high; version 5 → 5.
Score Breakdown
Technical Details
| ReportType | hail |
| Speed | 100 |
| Location | 1 E Sunnyside |
| County | Carbon |
| State | UT |
| Comments | Trained spotter reported quarter sized hail reported in Sunnyside... UT. (SLC) |
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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