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.
2 other detections within 20 km in the last 24 hours, the nearest 15 km from here.
This alert expired on 18 May 2026 at 03:45 UTC. It is kept here as a record.
It is the 20th strongest of the 29 detections recorded within 20 km of this point since 23 April 2026. Another comparable one was recorded here earlier the same day. 4 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 17 at 9:44PM CDT until May 17 at 10:45PM CDT by NWS Omaha/Valley NE
Nearby, since 23 April 2026
- June 11, 2026 · score 43 · 14.7 km
- July 4, 2026 · score 43 · 17.9 km
- September 7, 2026 · score 37 · 18.5 km
How we know
Confirmed by 17 independent sources, including NOAA.
Our own score for this event is 22 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 | Medium |
| Calamity Score (ours) | 22 / 100 |
| Our confidence | 70% |
| Coordinates | 40.6081, -96.0830 |
| Nearest City | Lincoln (54 km) |
| Impact Tier | minor |
| Date | 2026-05-18 — time not reported by the source |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.c978e46666d65bcf1f75805166a81602 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Nemaha, NE; Pawnee, NE; Richardson, NE; Clay, KS; Riley, KS; Clay, KS; Dickinson, KS; Ottawa, KS and 16 more areas |
| Headline | Severe Thunderstorm Warning issued May 17 at 9:44PM CDT until May 17 at 10:45PM CDT by NWS Omaha/Valley NE |
| Expires | 2026-05-17T22:45:00-05:00 |
| SenderName | NWS Omaha/Valley NE |
| HasExactCoords | true |
| MergedCount | 20 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.c978e46666d65bcf1f75805166a81602c7f05c2a.001.1","noaa_urn:oid:2.49.0.1.840.0.5c7b87b45e2e63030763c7d3c255c4600d249d0c.001.1","noaa_urn:oid:2.49.0.1.840.0.109ddb9125306673e6cdd66f3873aa82324dc86f.001.1","noaa_urn:oid:2.49.0.1.840.0.bfca035257b098004245120b3ac4769476ef8ace.001.1","noaa_urn:oid:2.49.0.1.840.0.1c56e8d08d0d738be5a9bf5c6cf983da1ba67573.001.1","noaa_urn:oid:2.49.0.1.840.0.0fb7da4e5b3b5bd4dd23a24fbabd90ead81c5416.001.1","noaa_urn:oid:2.49.0.1.840.0.a0b89d985a19a04efd1f1dde982f16c20eb5acc2.001.1","noaa_urn:oid:2.49.0.1.840.0.5221c41e2f2967172e76ff0ff40f51b0e289cb53.001.1","noaa_urn:oid:2.49.0.1.840.0.79284f2581e3b0689222c9fef002f8f557c38fc5.001.1","noaa_urn:oid:2.49.0.1.840.0.080ba84d6071b1614d285a98586f9aa995006eea.001.1","noaa_urn:oid:2.49.0.1.840.0.9ef3900e94398ab54930bcaac02073b2fa148395.001.1","noaa_urn:oid:2.49.0.1.840.0.78fae6903737750ed3ddad736ff9a97e22395cab.001.1","noaa_urn:oid:2.49.0.1.840.0.41b1d11d17f6409d8d6d93d2be660d34df175412.001.1","noaa_urn:oid:2.49.0.1.840.0.0f02d82d6d322250c42cca52c071e8a97c3dbc1a.001.1","noaa_urn:oid:2.49.0.1.840.0.bbb470153b6137a5b5f476ee35e7e2611d796050.001.1","noaa_urn:oid:2.49.0.1.840.0.df5de06e5d7f1392e5756c7b21f90036ac493f5f.001.1","noaa_urn:oid:2.49.0.1.840.0.e52c4a2c482d7e25c61a5657ce2c376fcc21bda1.001.1","noaa_urn:oid:2.49.0.1.840.0.a9fb932ad6386f373c020a9ace8947f2012aa64c.001.1","noaa_urn:oid:2.49.0.1.840.0.d278a2ef13aeb1d91ad34d3cdda9393d68ac3a28.001.1","noaa_urn:oid:2.49.0.1.840.0.e5d16c3a5b8bb1fe56ab39b47fa9f439506b473a.001.1"] |
| Iem TypeSummary | G |
| Iem Magnitude | 59 |
| Iem Unit | MPH |
| Iem City | 4 WSW Murdock |
| Iem County | Cass |
| Iem State | NE |
| Iem Wfo | OAX |
| Iem Remark | Personal Weather Station. |
| Google News RssFeed | weather |
| Google News SourceName | Hays Post |
Safety Information
Always follow official guidance from your local emergency management agency. This platform provides scientific monitoring data and is not a substitute for official warnings. If you are in immediate danger, contact your local emergency number.
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 22/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.