This alert expired on 13 August 2026 at 06:45 UTC. It is kept here as a record.
It is the 4th strongest of the 53 detections recorded within 20 km of this point since 16 May 2026. The last comparable one was on 31 July 2026. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued August 13 at 1:31AM CDT until August 13 at 1:45AM CDT by NWS Hastings NE
An estimated 51,440 people live within 50 km of this point.
Nearby, since 16 May 2026
- August 30, 2026 · score 22 · 19.4 km
- July 31, 2026 · score 22 · 20.9 km
- June 20, 2026 · score 39 · 22.3 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 39 out of 100, at 80 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | medium |
| Calamity Score (ours) | 39 / 100 |
| Our confidence | 80% |
| Coordinates | 41.2481, -98.6053 |
| Nearest City | Grand Island (42 km) |
| Population Exposed | 51.4K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-13T06:31:00.000Z |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Buffalo, NE; Sherman, NE; Greeley, NE; Howard, NE; Merrick, NE; Nance, NE; Sherman, NE; Valley, NE |
| Headline | Severe Thunderstorm Warning issued August 13 at 1:31AM CDT until August 13 at 1:45AM CDT by NWS Hastings NE |
| Expires | 2026-08-13T01:45:00-05:00 |
| SenderName | NWS Hastings NE |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.ff05468a604e0c72da3037b261361c3139c47638.001.1","noaa_urn:oid:2.49.0.1.840.0.278c078c33b9e66bc738369e2d2f871ec5481d8b.001.1"] |
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 10 February 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.
Calamity.live data shows a weather event with CalamityScore 39/100, near Grand Island (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 191 scientific monitoring sources.