Right now
The most recent data we hold from NOAA arrived 57 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 3 July 2026 at 02:00 UTC. It is kept here as a record.
It is the 4th strongest of the 23 detections recorded within 20 km of this point since 14 May 2026. Another comparable one was recorded here earlier the same day. 7 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 2 at 8:10PM CDT until July 2 at 9:00PM CDT by NWS Bismarck ND
Nearby, since 14 May 2026
- June 28, 2026 · score 34 · 22.7 km
How we know
3 recorded sources include NOAA; independence is not established by this count.
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 | 0.69/1 |
| Coordinates | 48.2984, -104.4465 |
| Nearest City | Williston (63 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-07-03T01:10:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.a6230a0267fac64f43c630a130a7fe62 |
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: 2026-07-03T01:10:00.000Z.
First archived: 2026-07-03T01:12:02.256Z. 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 | Golden Valley, ND; McKenzie, ND; Daniels, MT; Roosevelt, MT; Sheridan, MT; Daniels, MT; Sheridan, MT and 1 more areas |
| Headline | Severe Thunderstorm Warning issued July 2 at 8:10PM CDT until July 2 at 9:00PM CDT by NWS Bismarck ND |
| Expires | 2026-07-02T21:00:00-05:00 |
| SenderName | NWS Bismarck ND |
| HasExactCoords | true |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.a6230a0267fac64f43c630a130a7fe628050534e.001.1","noaa_urn:oid:2.49.0.1.840.0.cb99ce8f00f438bd3bb74e2d69c591c4379b3266.001.1","noaa_urn:oid:2.49.0.1.840.0.823ca469027cbda3497c44f82d885ba811c97a0f.001.1","noaa_urn:oid:2.49.0.1.840.0.026b5abb487fb026ccd0aff70b2f445767666c10.001.1"] |
| Iem TypeSummary | H |
| Iem Magnitude | 1 |
| Iem Unit | Inch |
| Iem City | 10 S Flaxville |
| Iem County | Daniels |
| Iem State | MT |
| Iem Wfo | GGW |
| MergedSources | [{"id":"iem_H_48.660_-105.170_1783037400000","source":"iem","severity":"low","severityValue":25,"timestamp":1783037400000,"latitude":48.66,"longitude":-105.17},{"id":"iem_H_48.670_-105.170_1783037400000","source":"iem","severity":"low","severityValue":25,"timestamp":1783037400000,"latitude":48.67,"longitude":-105.17}] |
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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