Right now
The most recent data we hold from NOAA arrived 5 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 1 June 2026 at 09:45 UTC. It is kept here as a record.
No stronger detection stands among the 113 recorded within 20 km of this point since 4 April 2026 — 80 others scored the same. Another comparable one was recorded here earlier the same day. 63 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 1 at 4:22AM CDT until June 1 at 4:45AM CDT by NWS Kansas City/Pleasant Hill MO
Urban PEI: 171,925 within a heuristic 50 km radius; not unique people.
Nearby, since 4 April 2026
- May 21, 2026 · score 43 · 5.8 km
- July 10, 2026 · score 43 · 12.6 km
- June 17, 2026 · score 43 · 20.6 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 43 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) | 43 / 100 |
| Legacy data-support index | 0.80/1 |
| Coordinates | 39.0085, -92.0246 |
| Nearest City | Columbia (27 km) |
| Urban exposure index (PEI) | 171.9K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-01T09:22:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.bdc66c82462f41d0cf1b3254f3d22a1b |
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: 2026-06-01T09:22:00.000Z.
First archived: 2026-06-01T09:24:01.323Z. 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 | Chariton, MO; Macon, MO; Randolph, MO; Audrain, MO; Callaway, MO; Gasconade, MO; Montgomery, MO; Osage, MO; Warren, MO; Audrain, MO; Boone, MO; Callaway, MO and 5 more areas |
| Headline | Severe Thunderstorm Warning issued June 1 at 4:22AM CDT until June 1 at 4:45AM CDT by NWS Kansas City/Pleasant Hill MO |
| Expires | 2026-06-01T04:45:00-05:00 |
| SenderName | NWS Kansas City/Pleasant Hill MO |
| HasExactCoords | true |
| MergedCount | 8 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.bdc66c82462f41d0cf1b3254f3d22a1b1e251ab0.002.1","noaa_urn:oid:2.49.0.1.840.0.22c1e58a6a8e5688ad0e74ad771e5afa3b7ee8e0.001.1","noaa_urn:oid:2.49.0.1.840.0.e4b574428f759faebe7115a6dacbafe8327c5f7d.001.1","noaa_urn:oid:2.49.0.1.840.0.d4d72215aedfed0ddc3257cfddc0904985f1f633.001.1","noaa_urn:oid:2.49.0.1.840.0.d5aa1ae743a70498ffea9e458de2b85e72bfca39.001.1","noaa_urn:oid:2.49.0.1.840.0.f6161e88dd844e91fa1d70df7b250c290d520a0c.002.1","noaa_urn:oid:2.49.0.1.840.0.32f64b5a6eb3be34b234e84dfd1e21c9acb9b8e3.001.1","noaa_urn:oid:2.49.0.1.840.0.08dc4f11be684363a54644c5b1039e8efa3e96d2.001.1"] |
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.
Review the area, threshold and delivery channel in your account.
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