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 22 May 2026 at 23:30 UTC. It is kept here as a record.
No stronger detection stands among the 29 recorded within 20 km of this point since 16 March 2026 — 5 others scored the same. The last comparable one was on 18 May 2026. 6 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Tornado Warning issued May 22 at 6:09PM CDT until May 22 at 6:30PM CDT by NWS Omaha/Valley NE
Urban PEI: 548,648 within a heuristic 50 km radius; not unique people.
Nearby, since 16 March 2026
- May 22, 2026 · score 72 · 2.2 km
- May 18, 2026 · score 72 · 14.4 km
- September 3, 2026 · score 41 · 19.6 km
How we know
2 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 72 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 | Critical |
| Calamity Score (ours) | 72 / 100 |
| Legacy data-support index | 0.85/1 |
| Coordinates | 41.6287, -95.7890 |
| Nearest City | Council Bluffs (41 km) |
| Urban exposure index (PEI) | 548.6K within 50 km |
| Impact Tier | catastrophic |
| Timestamp | 2026-05-22T23:09:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Tornado Warning_noaa_urn:oid:2.49.0.1.840.0.d39a672adb79ab7d3f3dfe59a4c93f5f |
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: 2026-05-22T23:09:00.000Z.
First archived: 2026-05-22T23:22:55.513Z. 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 | Tornado Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Mills, IA; Woodbury, IA |
| Headline | Tornado Warning issued May 22 at 6:09PM CDT until May 22 at 6:30PM CDT by NWS Omaha/Valley NE |
| Expires | 2026-05-22T18:30:00-05:00 |
| SenderName | NWS Omaha/Valley NE |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.d39a672adb79ab7d3f3dfe59a4c93f5fd0b732a5.001.1","noaa_urn:oid:2.49.0.1.840.0.678bdb79df248dca8fe885af5cd3125f8e529eff.001.1"] |
| Iem TypeSummary | C |
| Iem City | 6 NNE Whiting |
| Iem County | Monona |
| Iem State | IA |
| Iem Wfo | OAX |
| Iem Remark | Storm chaser report with a supporting photograph of a funnel cloud northeast of Whiting, Iowa. Spotter could not confirm any contact with the ground. |
| MergedSources | [{"id":"iem_C_42.200_-96.100_1779490680000","source":"iem","severity":"low","severityValue":25,"timestamp":1779490680000,"latitude":42.2,"longitude":-96.1}] |
Safety Information
If a tornado warning is issued: go to a basement or an interior room on the lowest floor, away from windows. A vehicle and a mobile home are not shelter. Cover your head and neck. Wait for the official all-clear before going outside, and watch for downed power lines and gas leaks afterwards.
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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