This alert expired on 8 July 2026 at 13:09 UTC. It is kept here as a record.
It is the 78th strongest of the 143 detections recorded within 20 km of this point since 15 March 2026. Another comparable one was recorded here earlier the same day. 119 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flood Warning issued July 8 at 7:59AM CDT until July 8 at 8:00AM CDT by NWS Aberdeen SD
An estimated 28,102 people live within 50 km of this point.
Nearby, since 15 March 2026
- June 29, 2026 · score 58 · 4.6 km
- June 30, 2026 · score 40 · 18.3 km
- July 25, 2026 · score 34 · 22.0 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 34 out of 100, at 82 % 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) | 34 / 100 |
| Our confidence | 82% |
| Coordinates | 45.4177, -97.8703 |
| Nearest City | Aberdeen (49 km) |
| Population Exposed | 28.1K within 50 km |
| Impact Tier | significant |
| Date | 2026-07-08 — time not reported by the source |
Score Breakdown
Technical Details
| Event | Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Brown, SD; Day, SD; Marshall, SD; Day, SD; Clark, SD; Codington, SD; Day, SD; Deuel, SD; Grant, SD; Roberts, SD and 1 more areas |
| Headline | Flood Warning issued July 8 at 7:59AM CDT until July 8 at 8:00AM CDT by NWS Aberdeen SD |
| Expires | 2026-07-08T08:09:00-05:00 |
| SenderName | NWS Aberdeen SD |
| HasExactCoords | true |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.04447e5c488c5a505262c0603fb12a4b72ca9562.001.1","noaa_urn:oid:2.49.0.1.840.0.9473638c5f07b23587d7601a8a978d09aae553f7.001.1","noaa_urn:oid:2.49.0.1.840.0.2c37c1559266a55a476d2909237d54b0e52ce1b4.001.1","noaa_urn:oid:2.49.0.1.840.0.257d2286cc3ceb654d7d10e4655b9824d8c8ebb3.001.1"] |
Safety Information
During flooding: never walk, swim, or drive through floodwaters. Six inches of moving water can knock you down, and one foot of water can sweep away a vehicle. Move to higher ground if waters rise. After flooding, avoid contact with floodwater which may contain sewage, chemicals, or debris. Follow local emergency service guidance.
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 34/100, near Aberdeen (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 191 scientific monitoring sources.