Right now
The most recent data we hold from NOAA arrived 7 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
2 other detections within 20 km in the last 24 hours, the nearest <1 km from here.
This alert expired on 23 September 2026 at 00:08 UTC. It is kept here as a record.
It is the 4th strongest of the 103 detections recorded within 20 km of this point since 2 April 2026. Another comparable one was recorded here earlier the same day. 88 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued September 22 at 5:58PM MDT until September 22 at 6:00PM MDT by NWS Salt Lake City UT
Urban PEI: 1,567,984 within a heuristic 50 km radius; not unique people.
Nearby, since 2 April 2026
- September 19, 2026 · score 58 · 6.4 km
- September 19, 2026 · score 58 · 8.7 km
- September 19, 2026 · score 58 · 10.4 km
How we know
3 recorded sources include NOAA; independence is not established by this count.
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 | 0.90/1 |
| Coordinates | 40.9960, -112.0120 |
| Nearest City | Kaysville (8 km) |
| Urban exposure index (PEI) | 1.6M within 50 km |
| Impact Tier | severe |
| Timestamp | 2026-09-22T23:58:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.aefef93c1a22c2e40d87f5bc188a8cbe3e24bfb7.001.1 |
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: noaa. Occurrence: 2026-09-22T23:58:00.000Z.
First archived: 2026-09-23T00:00:12.810Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Davis, UT |
| Headline | Severe Thunderstorm Warning issued September 22 at 5:58PM MDT until September 22 at 6:00PM MDT by NWS Salt Lake City UT |
| Expires | 2026-09-22T18:08:00-06:00 |
| SenderName | NWS Salt Lake City UT |
| HasExactCoords | true |
| Spc ReportType | hail |
| Spc Speed | 100 |
| Spc Location | 1 S Suncrest |
| Spc County | Utah |
| Spc State | UT |
| Spc Comments | Report from mPING: Quarter (1.00 in.). (SLC) |
| Iem TypeSummary | H |
| Iem Magnitude | 1 |
| Iem Unit | Inch |
| Iem City | 1 S Suncrest |
| Iem County | Utah |
| Iem State | UT |
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.
Want to know when something happens near Kaysville?