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.
Nothing else has been detected within 20 km in the last 24 hours.
This alert expired on 18 May 2026 at 02:45 UTC. It is kept here as a record.
No stronger detection stands among the 13 recorded within 20 km of this point since 16 May 2026 — 2 others scored the same. Another comparable one was recorded here earlier the same day. 7 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Tornado Warning issued May 17 at 9:23PM CDT until May 17 at 9:45PM CDT by NWS Des Moines IA
An estimated 24,649 people live within 50 km of this point.
Nearby, since 16 May 2026
- May 18, 2026 · score 58 · 1.3 km
How we know
Confirmed by 5 independent sources, including NOAA.
Our own score for this event is 58 out of 100, at 90 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
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) | 58 / 100 |
| Our confidence | 90% |
| Coordinates | 42.7449, -94.6587 |
| Nearest City | Fort Dodge (48 km) |
| Population Exposed | 24.6K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-18T02:23:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Tornado Warning_noaa_urn:oid:2.49.0.1.840.0.9cefd2ae582e6d5d7f9b95dc257b6479 |
Score Breakdown
Technical Details
| Event | Tornado Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Emmet, IA; Palo Alto, IA; Humboldt, IA; Kossuth, IA; Palo Alto, IA; Pocahontas, IA; Emmet, IA and 4 more areas |
| Headline | Tornado Warning issued May 17 at 9:23PM CDT until May 17 at 9:45PM CDT by NWS Des Moines IA |
| Expires | 2026-05-17T21:45:00-05:00 |
| SenderName | NWS Des Moines IA |
| HasExactCoords | true |
| MergedCount | 7 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.9cefd2ae582e6d5d7f9b95dc257b6479f676dfe7.001.1","noaa_urn:oid:2.49.0.1.840.0.e02c1e3df8a7d82f84493054f9e6918cde3406a5.001.1","noaa_urn:oid:2.49.0.1.840.0.1b35b763a22297008c05db048477a95b0fc9df6a.001.1","noaa_urn:oid:2.49.0.1.840.0.ffa5c80608a295890c8ff9d370b69bffc7b8a6ac.001.1","noaa_urn:oid:2.49.0.1.840.0.9a9bbe55e7696f010a6752c4a7fa0d5b947fdf77.002.1","noaa_urn:oid:2.49.0.1.840.0.b56f9b5d83290299020f057c321a6f18467c96d2.001.1","noaa_urn:oid:2.49.0.1.840.0.8c3d73e292cd7e61fbdca9c81584d98c5195ffe1.002.1"] |
| Iem TypeSummary | T |
| Iem City | Pomeroy |
| Iem County | Calhoun |
| Iem State | IA |
| Iem Wfo | DMX |
| Iem Remark | Local Fire department reports tornado. |
| MergedSources | [{"id":"iem_G_42.420_-94.990_1779069300000","source":"iem","severity":"low","severityValue":25,"timestamp":1779069300000,"latitude":42.42,"longitude":-94.99},{"id":"iem_G_42.730_-94.950_1779068880000","source":"iem","severity":"low","severityValue":25,"timestamp":1779068880000,"latitude":42.73,"longitude":-94.95},{"id":"iem_G_42.600_-95.220_1779068100000","source":"iem","severity":"low","severityValue":25,"timestamp":1779068100000,"latitude":42.6,"longitude":-95.22},{"id":"iem_T_42.550_-94.680_1779069660000","source":"iem","severity":"low","severityValue":25,"timestamp":1779069660000,"latitude":42.55,"longitude":-94.68}] |
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.
Want to know when something happens in this area?
Calamity.live data shows a weather event with CalamityScore 58/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.