Right now
The most recent data we hold from NOAA arrived 9 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
Nothing else has been detected within 20 km in the last 24 hours.
This alert expired on 14 May 2026 at 05:00 UTC. It is kept here as a record.
No stronger detection stands among the 25 recorded within 20 km of this point since 13 May 2026 — 18 others scored the same. Another comparable one was recorded here earlier the same day. 5 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 13 at 10:03PM MDT until May 13 at 11:00PM MDT by NWS Glasgow MT
Nearby, since 13 May 2026
- May 14, 2026 · score 22 · 0.0 km
- May 30, 2026 · score 22 · 11.0 km
- July 7, 2026 · score 16 · 15.8 km
How we know
Confirmed by 8 independent sources, including NOAA.
Our own score for this event is 22 out of 100, at 71 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
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) | 22 / 100 |
| Our confidence | 71% |
| Coordinates | 47.5105, -108.4100 |
| Nearest City | Billings (193 km) |
| Impact Tier | minor |
| Timestamp | 2026-05-14T04:03:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.9cd5b2816d0060c55b04fd280a5e205b14c73c9b.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Garfield, MT; Petroleum, MT; Phillips, MT |
| Headline | Severe Thunderstorm Warning issued May 13 at 10:03PM MDT until May 13 at 11:00PM MDT by NWS Glasgow MT |
| Expires | 2026-05-13T23:00:00-06:00 |
| SenderName | NWS Glasgow MT |
| HasExactCoords | true |
| Iem TypeSummary | G |
| Iem Magnitude | 72 |
| Iem Unit | MPH |
| Iem City | 6 SE Tiegen |
| Iem County | Petroleum |
| Iem State | MT |
| Iem Wfo | GGW |
| Iem Remark | Winnett SW station (WIEM8). |
| MergedSources | [{"id":"iem_G_47.240_-108.360_1778719260000","source":"iem","severity":"low","severityValue":25,"timestamp":1778719260000,"latitude":47.24,"longitude":-108.36},{"id":"iem_G_47.010_-108.360_1778716800000","source":"iem","severity":"low","severityValue":25,"timestamp":1778716800000,"latitude":47.01,"longitude":-108.36},{"id":"iem_G_46.900_-108.740_1778715900000","source":"iem","severity":"low","severityValue":25,"timestamp":1778715900000,"latitude":46.9,"longitude":-108.74},{"id":"iem_G_47.140_-108.590_1778717100000","source":"iem","severity":"low","severityValue":25,"timestamp":1778717100000,"latitude":47.14,"longitude":-108.59},{"id":"iem_G_47.560_-107.530_1778720880000","source":"iem","severity":"low","severityValue":25,"timestamp":1778720880000,"latitude":47.56,"longitude":-107.53},{"id":"iem_G_47.770_-107.680_1778721300000","source":"iem","severity":"low","severityValue":25,"timestamp":1778721300000,"latitude":47.77,"longitude":-107.68},{"id":"iem_G_46.970_-108.500_1778716500000","source":"iem","severity":"low","severityValue":25,"timestamp":1778716500000,"latitude":46.97,"longitude":-108.5}] |
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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