Right now
The most recent data we hold from NOAA arrived 6 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 19 May 2026 at 01:30 UTC. It is kept here as a record.
No stronger detection stands among the 19 recorded within 20 km of this point since 16 March 2026 — one other scored the same. The last comparable one was on 17 May 2026. 3 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Tornado Warning issued May 18 at 8:01PM CDT until May 18 at 8:30PM CDT by NWS Des Moines IA
Nearby, since 16 March 2026
- June 11, 2026 · score 46 · 16.9 km
How we know
Confirmed by 6 independent sources, including NOAA.
Our own score for this event is 46 out of 100, at 70 % 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) | 46 / 100 |
| Our confidence | 70% |
| Coordinates | 41.0270, -94.0700 |
| Nearest City | Indianola (56 km) |
| Impact Tier | minor |
| Timestamp | 2026-05-19T01:01:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Tornado Warning_noaa_urn:oid:2.49.0.1.840.0.4969e481269613309be8048c8915234d |
Score Breakdown
Technical Details
| Event | Tornado Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Jasper, IA; Polk, IA; Nodaway, MO; Worth, MO |
| Headline | Tornado Warning issued May 18 at 8:01PM CDT until May 18 at 8:30PM CDT by NWS Des Moines IA |
| Expires | 2026-05-18T20:30:00-05:00 |
| SenderName | NWS Des Moines IA |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.4969e481269613309be8048c8915234dc09b2378.002.1","noaa_urn:oid:2.49.0.1.840.0.7b7a95e2b107dd4f35c0e6c17e75f644e3007a5b.001.1"] |
| Iem TypeSummary | T |
| Iem City | 5 N Mount Ayr |
| Iem County | Ringgold |
| Iem State | IA |
| Iem Wfo | DMX |
| Iem Remark | Multiple reports from emergency management of confirmed tornado. |
| MergedSources | [{"id":"iem_T_40.700_-94.360_1779148560000","source":"iem","severity":"low","severityValue":25,"timestamp":1779148560000,"latitude":40.7,"longitude":-94.36},{"id":"iem_H_40.520_-94.590_1779148860000","source":"iem","severity":"low","severityValue":25,"timestamp":1779148860000,"latitude":40.52,"longitude":-94.59},{"id":"iem_T_40.600_-94.630_1779147000000","source":"iem","severity":"low","severityValue":25,"timestamp":1779147000000,"latitude":40.6,"longitude":-94.63},{"id":"iem_T_40.600_-94.630_1779147600000","source":"iem","severity":"low","severityValue":25,"timestamp":1779147600000,"latitude":40.6,"longitude":-94.63},{"id":"iem_T_40.780_-94.220_1779149340000","source":"iem","severity":"low","severityValue":25,"timestamp":1779149340000,"latitude":40.78,"longitude":-94.22}] |
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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