Right now
The most recent data we hold from NOAA arrived 68 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 02:00 UTC. It is kept here as a record.
It is the 2nd strongest of the 14 detections recorded within 20 km of this point since 8 June 2026.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 7 at 8:43PM CDT until June 7 at 9:00PM CDT by NWS Bismarck ND
Urban PEI: 23,765 within a heuristic 50 km radius; not unique people.
Nearby, since 8 June 2026
- July 6, 2026 · score 34 · 8.0 km
- June 9, 2026 · score 22 · 20.0 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 28 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) | 28 / 100 |
| Legacy data-support index | 0.80/1 |
| Coordinates | 47.2462, -102.4380 |
| Nearest City | Dickinson (49 km) |
| Urban exposure index (PEI) | 23.8K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-08T01:43:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.f4db50d39e9f670db3102ed4988b4c1d |
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: 2026-06-08T01:43:00.000Z.
First archived: 2026-06-08T01:48:26.871Z. 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; Dunn, ND; McKenzie, ND; Stark, ND; Adams, ND; Grant, ND; Hettinger, ND; Morton, ND; Sioux, ND; Corson, SD and 5 more areas |
| Headline | Severe Thunderstorm Warning issued June 7 at 8:43PM CDT until June 7 at 9:00PM CDT by NWS Bismarck ND |
| Expires | 2026-06-07T21:00:00-05:00 |
| SenderName | NWS Bismarck ND |
| HasExactCoords | true |
| MergedCount | 8 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.f4db50d39e9f670db3102ed4988b4c1de4f39786.002.1","noaa_urn:oid:2.49.0.1.840.0.e8743886442b8a049724e0efa28c9019c20bdd56.001.1","noaa_urn:oid:2.49.0.1.840.0.18fb3b6b31f8258ccba31d437b4261719d946b0f.001.1","noaa_urn:oid:2.49.0.1.840.0.ab8c515242dbf28dcdbf127e11b8396960d48cf4.001.1","noaa_urn:oid:2.49.0.1.840.0.d36f1d584285ffbfe9ed5e8dbf46e97d2a120283.001.1","noaa_urn:oid:2.49.0.1.840.0.24cd110c6811d2415e52c5ab875b13a9e4c33998.001.1","noaa_urn:oid:2.49.0.1.840.0.59a40bc17d47fc418ee93e388dbf15981f6a948f.001.1","noaa_urn:oid:2.49.0.1.840.0.dd825f2a841476ed315054cd964c15baae95b7c6.001.1"] |
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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