Right now
The most recent data we hold from NOAA arrived 4 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
One other detection within 20 km in the last 24 hours, 21 km from here.
This alert expired on 3 July 2026 at 07:15 UTC. It is kept here as a record.
No stronger detection stands among the 25 recorded within 20 km of this point since 8 April 2026 — 7 others scored the same. Another comparable one was recorded here earlier the same day. 6 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 3 at 1:29AM CDT until July 3 at 2:15AM CDT by NWS Bismarck ND
Urban PEI: 26,977 within a heuristic 50 km radius; not unique people.
Nearby, since 8 April 2026
- July 3, 2026 · score 34 · 6.4 km
- June 28, 2026 · score 34 · 18.2 km
- July 4, 2026 · score 34 · 18.6 km
How we know
3 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 34 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) | 34 / 100 |
| Legacy data-support index | 0.90/1 |
| Coordinates | 48.1450, -103.9634 |
| Nearest City | Williston (25 km) |
| Urban exposure index (PEI) | 27.0K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-03T06:29:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.b6e12df228874b34f9ed9862a204df59 |
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: 2026-07-03T06:29:00.000Z.
First archived: 2026-07-03T06:37:02.932Z. 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 | Divide, ND; Williams, ND; Dawson, MT; Richland, MT; Roosevelt, MT; Wibaux, MT; McKenzie, ND; Williams, ND |
| Headline | Severe Thunderstorm Warning issued July 3 at 1:29AM CDT until July 3 at 2:15AM CDT by NWS Bismarck ND |
| Expires | 2026-07-03T02:15:00-05:00 |
| SenderName | NWS Bismarck ND |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.b6e12df228874b34f9ed9862a204df595d4ba2b0.001.1","noaa_urn:oid:2.49.0.1.840.0.93049c5241ffd1b5a23b1c58ab504720ffd441a3.002.1","noaa_urn:oid:2.49.0.1.840.0.3ef3b31f65f4d635352a24d57594975986220154.001.1"] |
| Iem TypeSummary | H |
| Iem Magnitude | 1 |
| Iem Unit | Inch |
| Iem City | 10 NNE Skaar |
| Iem County | McKenzie |
| Iem State | ND |
| Iem Wfo | BIS |
| Iem Remark | Public report relayed by broadcast media. |
| MergedSources | [{"id":"iem_G_47.920_-104.330_1783058400000","source":"iem","severity":"low","severityValue":25,"timestamp":1783058400000,"latitude":47.92,"longitude":-104.33},{"id":"iem_H_47.500_-103.930_1783041900000","source":"iem","severity":"low","severityValue":25,"timestamp":1783041900000,"latitude":47.5,"longitude":-103.93}] |
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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