Right now
The most recent data we hold from NOAA arrived 13 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 8 June 2026 at 00:30 UTC. It is kept here as a record.
No stronger detection stands among the 26 recorded within 20 km of this point since 15 March 2026 — 16 others scored the same. Another comparable one was recorded here earlier the same day. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 7 at 6:48PM CDT until June 7 at 7:30PM CDT by NWS Bismarck ND
Nearby, since 15 March 2026
- July 29, 2026 · score 22 · 17.9 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 22 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) | 22 / 100 |
| Legacy data-support index | 0.60/1 |
| Coordinates | 46.8887, -103.8995 |
| Nearest City | Dickinson (84 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-06-07T23:48:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.9dd0421b6072f0ceb579d9664692fc12 |
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: noaa. Occurrence: 2026-06-07T23:48:00.000Z.
First archived: 2026-06-07T23:50:47.601Z. 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 | Billings, ND; Golden Valley, ND; Butte, SD; Harding, SD; Richland, MT; Roosevelt, MT and 8 more areas |
| Headline | Severe Thunderstorm Warning issued June 7 at 6:48PM CDT until June 7 at 7:30PM CDT by NWS Bismarck ND |
| Expires | 2026-06-07T19:30:00-05:00 |
| SenderName | NWS Bismarck ND |
| HasExactCoords | true |
| MergedCount | 12 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.9dd0421b6072f0ceb579d9664692fc12781d1013.001.1","noaa_urn:oid:2.49.0.1.840.0.d34da284ff0f908602fd3e62bdfe3235fefa9a2a.001.1","noaa_urn:oid:2.49.0.1.840.0.4a85d618bd4e6909ac7f9130f2000a14d8156e43.001.1","noaa_urn:oid:2.49.0.1.840.0.cda566072dc30fce08016b93f0a164c0e5846ce1.001.1","noaa_urn:oid:2.49.0.1.840.0.9dcbb12fb964bc24fdbe0d44d26314bbbb0b498f.001.1","noaa_urn:oid:2.49.0.1.840.0.26dfc2553a774e8aff0e15a39a667cba3a8627a6.002.1","noaa_urn:oid:2.49.0.1.840.0.a8a41148831f1f1834120e2851d317e68d3b69d4.001.1","noaa_urn:oid:2.49.0.1.840.0.8e736eb73abd34c8bda8c53faa7a77877bed3670.001.1","noaa_urn:oid:2.49.0.1.840.0.e149d81e4ae21fca432bcfe5859e77030565848e.001.1","noaa_urn:oid:2.49.0.1.840.0.6ad9ee9ebe6decaeb63f2392faa77077fa87b544.001.1","noaa_urn:oid:2.49.0.1.840.0.ad6803e5ef7f66f078f58c9f2822b7c0409b15d8.001.1","noaa_urn:oid:2.49.0.1.840.0.c3cd56ab03b3e1d7d8aca6494352dc533fb45b27.001.1"] |
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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