This alert expired on 10 June 2026 at 03:30 UTC. It is kept here as a record.
It is the 19th strongest of the 27 detections recorded within 20 km of this point since 27 April 2026. Another comparable one was recorded here earlier the same day. One more was recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 9 at 9:47PM CDT until June 9 at 10:30PM CDT by NWS Aberdeen SD
Nearby, since 27 April 2026
- September 2, 2026 · score 28 · 23.6 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 16 out of 100, at 61 % 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) | 16 / 100 |
| Our confidence | 61% |
| Coordinates | 42.3754, -98.7592 |
| Nearest City | Norfolk (117 km) |
| Impact Tier | minor |
| Timestamp | 2026-06-10T02:47:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.e2cf35ec4246f5549906a46078e76f08 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Hughes, SD; Hyde, SD; Sully, SD; Garfield, NE; Holt, NE; Loup, NE; Rock, NE; Wheeler, NE; Madison, NE; Pierce, NE; Stanton, NE; Wayne, NE and 3 more areas |
| Headline | Severe Thunderstorm Warning issued June 9 at 9:47PM CDT until June 9 at 10:30PM CDT by NWS Aberdeen SD |
| Expires | 2026-06-09T22:30:00-05:00 |
| SenderName | NWS Aberdeen SD |
| HasExactCoords | true |
| MergedCount | 6 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.e2cf35ec4246f5549906a46078e76f08dc872e6d.001.1","noaa_urn:oid:2.49.0.1.840.0.6c7eddd69efd77beefe7c18d91e30853773e2d09.001.1","noaa_urn:oid:2.49.0.1.840.0.7187a316ca193c6ae43262e0ae7ef7504fb980b2.001.1","noaa_urn:oid:2.49.0.1.840.0.8b0983c504496dc3d590c60cfc1a6d5c75821dc0.002.1","noaa_urn:oid:2.49.0.1.840.0.a200104994cf743542d984b174bf47c72c67cfc8.002.1","noaa_urn:oid:2.49.0.1.840.0.01279a0fbdc6df744f381b85072ab21c57344f97.002.1"] |
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.
Want to know when something happens in this area?
Calamity.live data shows a weather event with CalamityScore 16/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.