Right now
The most recent data we hold from SPC arrived 2 hours ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
Reported by SPC 49 days ago.
What the source measured
SPC reported: Wind 64 kt near 2 SSE Tremonton, Box Elder, UT. Mesonet station UT28 Tremonton. (SLC)
Urban PEI: 87,569 within a heuristic 50 km radius; not unique people.
How we know
2 recorded sources include SPC; independence is not established by this count.
Our own score for this event is 32 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 v1. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 32 / 100 |
| Legacy data-support index | 0.74/1 |
| Coordinates | 41.6900, -112.1600 |
| Nearest City | Brigham City (23 km) |
| Urban exposure index (PEI) | 87.6K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-30T01:00:00.000Z |
| Source | https://www.spc.noaa.gov/climo/reports/today.html |
Physical priority index · v1. 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: 2026-07-30T01:00:00.000Z.
First archived: 2026-07-30T12:59:23.703Z. 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
| ReportType | wind |
| Speed | 64 |
| Location | 2 SSE Tremonton |
| County | Box Elder |
| State | UT |
| Comments | Mesonet station UT28 Tremonton. (SLC) |
| Iem TypeSummary | G |
| Iem Magnitude | 64 |
| Iem Unit | MPH |
| Iem City | 2 SSE Tremonton |
| Iem County | Box Elder |
| Iem State | UT |
| Iem Wfo | SLC |
| Iem Remark | Mesonet station UT28 Tremonton. |
| MergedSources | [{"id":"iem_G_41.690_-112.160_1785373200000","source":"iem","severity":"low","severityValue":25,"timestamp":1785373200000,"latitude":41.69,"longitude":-112.16}] |
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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