Right now
The most recent data we hold from NOAA arrived 1 minute 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 1 June 2026 at 10:45 UTC. It is kept here as a record.
It is the 27th strongest of the 49 detections recorded within 20 km of this point since 15 March 2026. Another comparable one was recorded here earlier the same day. 3 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 1 at 5:29AM CDT until June 1 at 5:45AM CDT by NWS St Louis MO
Urban PEI: 35,899 within a heuristic 50 km radius; not unique people.
Nearby, since 15 March 2026
- June 1, 2026 · score 39 · 2.3 km
- August 1, 2026 · score 46 · 7.1 km
- May 18, 2026 · score 22 · 12.9 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
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 | 0.80/1 |
| Coordinates | 38.4531, -91.2042 |
| Nearest City | Wildwood (49 km) |
| Urban exposure index (PEI) | 35.9K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-01T10:29:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.1103e5ad20167ef76338ed5c3e3a1854 |
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: 2026-06-01T10:29:00.000Z.
First archived: 2026-06-01T10:33:02.120Z. 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 | Crawford, MO; Franklin, MO; Gasconade, MO; Washington, MO; Franklin, MO; Lincoln, MO; St. Charles, MO; Warren, MO |
| Headline | Severe Thunderstorm Warning issued June 1 at 5:29AM CDT until June 1 at 5:45AM CDT by NWS St Louis MO |
| Expires | 2026-06-01T05:45:00-05:00 |
| SenderName | NWS St Louis MO |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.1103e5ad20167ef76338ed5c3e3a1854fc1fcf9d.001.1","noaa_urn:oid:2.49.0.1.840.0.fa76efa970393b2d44631afb6cbdf8244d813303.002.1"] |
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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