Right now
The most recent data we hold from NOAA arrived 19 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
This alert expired on 19 May 2026 at 01:00 UTC. It is kept here as a record.
What the source measured
NOAA reported: Tornado Warning issued May 18 at 7:16PM CDT until May 18 at 8:00PM CDT by NWS Des Moines IA
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 46 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) | 46 / 100 |
| Legacy data-support index | 0.61/1 |
| Coordinates | 40.5195, -94.6717 |
| Nearest City | Saint Joseph (85 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-05-19T00:16:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Tornado Warning_noaa_urn:oid:2.49.0.1.840.0.61272742b9c9e57eb25d8885b2e42bf2 |
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: 2026-05-19T00:16:00.000Z.
First archived: 2026-05-19T00:19:12.137Z. 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 | Ringgold, IA; Taylor, IA; Atchison, MO; Richardson, NE and 3 more areas |
| Headline | Tornado Warning issued May 18 at 7:16PM CDT until May 18 at 8:00PM CDT by NWS Des Moines IA |
| Expires | 2026-05-18T20:00:00-05:00 |
| SenderName | NWS Des Moines IA |
| HasExactCoords | true |
| MergedCount | 6 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.61272742b9c9e57eb25d8885b2e42bf27f5d0492.001.1","noaa_urn:oid:2.49.0.1.840.0.331653a5b919c31d9c099a36fd38024212cda1dd.001.1","noaa_urn:oid:2.49.0.1.840.0.1df4c0a420521803b7f445e866398a662ed64e85.001.1","noaa_urn:oid:2.49.0.1.840.0.267e21ab71460f6eb72041eb988ff07764561204.002.1","noaa_urn:oid:2.49.0.1.840.0.3a6f7025c41a84605b79a747fe7c1efd15e40715.001.1","noaa_urn:oid:2.49.0.1.840.0.fefad612da6b8c4de9517d115f705e43bfff43d6.001.1"] |
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.
Review the area, threshold and delivery channel in your account.
Want to know when something happens in this area?