Right now
The most recent data we hold from NOAA arrived 2 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 10 June 2026 at 23:15 UTC. It is kept here as a record.
It is the 2nd strongest of the 9 detections recorded within 20 km of this point since 11 March 2026. The last comparable one was on 17 April 2026.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 10 at 5:32PM CDT until June 10 at 6:15PM CDT by NWS Kansas City/Pleasant Hill MO
Urban PEI: 24,624 within a heuristic 50 km radius; not unique people.
Nearby, since 11 March 2026
- March 11, 2026 · score 40 · 13.3 km
- July 21, 2026 · score 28 · 18.3 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 | 40.7913, -92.3096 |
| Nearest City | Ottumwa (27 km) |
| Urban exposure index (PEI) | 24.6K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-10T22:32:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.4cc306f277ba991488e0932ee7319ab8 |
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: 2026-06-10T22:32:00.000Z.
First archived: 2026-06-10T22:36:24.128Z. 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 | Adair, MO; Sullivan, MO; Henry, IA; Jefferson, IA; Keokuk, IA; Louisa, IA; Muscatine, IA; Washington, IA; Grundy, MO; Mercer, MO; Putnam, MO; Sullivan, MO and 1 more areas |
| Headline | Severe Thunderstorm Warning issued June 10 at 5:32PM CDT until June 10 at 6:15PM CDT by NWS Kansas City/Pleasant Hill MO |
| Expires | 2026-06-10T18:15:00-05:00 |
| SenderName | NWS Kansas City/Pleasant Hill MO |
| HasExactCoords | true |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.4cc306f277ba991488e0932ee7319ab8b955e871.001.1","noaa_urn:oid:2.49.0.1.840.0.e297608c2f30010d677697a5fd5a5c60850cee85.001.1","noaa_urn:oid:2.49.0.1.840.0.6f7451c625a932b95bdacb95fd240648353069c3.001.1","noaa_urn:oid:2.49.0.1.840.0.53fd142be699f0a13ae36ab1e6abdd26ee35a732.001.1"] |
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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