Right now
The most recent data we hold from NOAA arrived 10 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 21:45 UTC. It is kept here as a record.
No stronger detection stands among the 44 recorded within 20 km of this point since 15 March 2026 — 11 others scored the same. Another comparable one was recorded here earlier the same day. 9 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Tornado Warning issued May 18 at 4:05PM CDT until May 18 at 4:45PM CDT by NWS Omaha/Valley NE
Nearby, since 15 March 2026
- June 14, 2026 · score 16 · 11.4 km
- June 20, 2026 · score 22 · 19.2 km
- May 18, 2026 · score 46 · 27.2 km
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, at 59 % 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 | 59% |
| Coordinates | 39.9541, -96.5206 |
| Nearest City | Manhattan (86 km) |
| Impact Tier | minor |
| Timestamp | 2026-05-18T21:05:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Tornado Warning_noaa_urn:oid:2.49.0.1.840.0.81505348154d580f1f86a55b5b4ddf25 |
Score Breakdown
Technical Details
| Event | Tornado Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Johnson, NE; Pawnee, NE; Clay, KS; Cloud, KS; Ottawa, KS; Washington, KS and 1 more areas |
| Headline | Tornado Warning issued May 18 at 4:05PM CDT until May 18 at 4:45PM CDT by NWS Omaha/Valley NE |
| Expires | 2026-05-18T16:45:00-05:00 |
| SenderName | NWS Omaha/Valley NE |
| HasExactCoords | true |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.81505348154d580f1f86a55b5b4ddf253eac4b18.001.1","noaa_urn:oid:2.49.0.1.840.0.70d3e10902d7e38dedf5b6ddc9fe92cff7494c97.001.1","noaa_urn:oid:2.49.0.1.840.0.af2b0e6927c878a6672ad0b9c04e894648c7c783.001.1","noaa_urn:oid:2.49.0.1.840.0.9a7cdd9efa9a088a01a7dc4e9f7916f0ca85a30d.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.
Want to know when something happens in this area?
Calamity.live data shows a weather event with CalamityScore 46/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.