Right now
The most recent data we hold from NOAA arrived 3 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 20:00 UTC. It is kept here as a record.
It is the 12th strongest of the 48 detections recorded within 20 km of this point since 9 April 2026. Another comparable one was recorded here earlier the same day. 13 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 18 at 2:42PM CDT until May 18 at 3:00PM CDT by NWS Omaha/Valley NE
Nearby, since 9 April 2026
- May 18, 2026 · score 46 · 5.3 km
- July 4, 2026 · score 46 · 14.0 km
- July 4, 2026 · score 46 · 15.0 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 22 out of 100, at 64 % 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 | 64% |
| Coordinates | 39.7111, -97.3754 |
| Nearest City | Junction City (89 km) |
| Impact Tier | minor |
| Timestamp | 2026-05-18T19:42:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.2702d028df92a6cae764536937a01221 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Gage, NE; Jefferson, NE; Ottawa, KS; Cloud, KS; Republic, KS; Washington, KS |
| Headline | Severe Thunderstorm Warning issued May 18 at 2:42PM CDT until May 18 at 3:00PM CDT by NWS Omaha/Valley NE |
| Expires | 2026-05-18T15:00:00-05:00 |
| SenderName | NWS Omaha/Valley NE |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.2702d028df92a6cae764536937a012212597a8ce.001.1","noaa_urn:oid:2.49.0.1.840.0.7948f6631d1ead596ac0c22d2426c62b69e7c1a1.001.1","noaa_urn:oid:2.49.0.1.840.0.a1a2ee813fb6d30a5d461f19141ba17fe18b3fea.001.1"] |
| Iem TypeSummary | H |
| Iem Magnitude | 1 |
| Iem Unit | Inch |
| Iem City | 3 S Jamestown |
| Iem County | Cloud |
| Iem State | KS |
| Iem Wfo | TOP |
| MergedSources | [{"id":"iem_H_39.550_-97.860_1779130260000","source":"iem","severity":"low","severityValue":25,"timestamp":1779130260000,"latitude":39.55,"longitude":-97.86}] |
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.