Right now
The most recent data we hold from SPC arrived 7 hours ago, and this point is in it.
85 other detections within 20 km in the last 24 hours, the nearest <1 km from here.
Reported by SPC today.
It is the 4th strongest of the 105 detections recorded within 20 km of this point since 2 April 2026. Another comparable one was recorded here earlier the same day. 85 more were recorded here in the fortnight before it.
What the source measured
SPC reported: Hail 125 in near 1 W Layton, Davis, UT. Public report of measured half-dollar sized hail. (SLC)
Urban PEI: 1,127,009 within a heuristic 50 km radius; not unique people.
Nearby, since 2 April 2026
- September 19, 2026 · score 58 · 1.4 km
- September 19, 2026 · score 58 · 5.8 km
- July 30, 2026 · score 48 · 10.2 km
How we know
One source: SPC. Not yet confirmed by a second, independent source.
Our own score for this event is 58 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) | 58 / 100 |
| Legacy data-support index | 0.63/1 |
| Coordinates | 41.0800, -111.9700 |
| Nearest City | Layton (2 km) |
| Urban exposure index (PEI) | 1.1M within 50 km |
| Impact Tier | severe |
| 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: 2026-09-19T05:30:56.885Z. Material modification: 2026-09-19T12:13:26.711Z.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
2026-09-19T12:13:26.711Z · data_change
Index 58 → 58; severity high → high; version 5 → 5.
2026-09-19T12:08:05.106Z · data_change
Index 58 → 58; severity high → high; version 5 → 5.
2026-09-19T12:02:42.694Z · data_change
Index 58 → 58; severity high → high; version 5 → 5.
2026-09-19T11:57:21.169Z · data_change
Index 58 → 58; severity high → high; version 5 → 5.
2026-09-19T11:46:35.709Z · data_change
Index 58 → 58; severity high → high; version 5 → 5.
2026-09-19T11:41:15.485Z · data_change
Index 58 → 58; severity high → high; version 5 → 5.
2026-09-19T11:35:54.730Z · data_change
Index 58 → 58; severity high → high; version 5 → 5.
2026-09-19T11:30:36.120Z · data_change
Index 58 → 58; severity high → high; version 5 → 5.
2026-09-19T11:25:12.913Z · data_change
Index 58 → 58; severity high → high; version 5 → 5.
2026-09-19T11:14:28.616Z · data_change
Index 58 → 58; severity high → high; version 5 → 5.
2026-09-19T11:09:06.579Z · data_change
Index 58 → 58; severity high → high; version 5 → 5.
2026-09-19T11:03:42.283Z · data_change
Index 58 → 58; severity high → high; version 5 → 5.
2026-09-19T10:58:18.297Z · data_change
Index 58 → 58; severity high → high; version 5 → 5.
2026-09-19T10:52:54.552Z · data_change
Index 58 → 58; severity high → high; version 5 → 5.
2026-09-19T10:47:33.599Z · data_change
Index 58 → 58; severity high → high; version 5 → 5.
2026-09-19T10:42:12.107Z · data_change
Index 58 → 58; severity high → high; version 5 → 5.
2026-09-19T10:31:29.578Z · data_change
Index 58 → 58; severity high → high; version 5 → 5.
2026-09-19T10:26:09.018Z · data_change
Index 58 → 58; severity high → high; version 5 → 5.
2026-09-19T10:20:49.188Z · data_change
Index 58 → 58; severity high → high; version 5 → 5.
2026-09-19T10:15:28.096Z · data_change
Index 58 → 58; severity high → high; version 5 → 5.
Score Breakdown
Technical Details
| ReportType | hail |
| Speed | 125 |
| Location | 1 W Layton |
| County | Davis |
| State | UT |
| Comments | Public report of measured half-dollar sized hail. (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.
Review the area, threshold and delivery channel in your account.
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