Right now
The most recent data we hold from NOAA arrived 9 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
26 other detections within 20 km in the last 24 hours, the nearest 21 km from here.
This alert expired on 4 June 2026 at 13:00 UTC. It is kept here as a record.
It is the 27th strongest of the 50 detections recorded within 20 km of this point since 15 March 2026. The last comparable one was on 12 May 2026.
What the source measured
NOAA reported: Flood Warning issued June 3 at 10:24PM CDT until June 4 at 8:00AM CDT by NWS Aberdeen SD
An estimated 45,730 people live within 50 km of this point.
Nearby, since 15 March 2026
- July 10, 2026 · score 34 · 16.7 km
- July 9, 2026 · score 34 · 16.7 km
- June 4, 2026 · score 34 · 20.0 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.
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) | 34 / 100 |
| Our confidence | 82% |
| Coordinates | 44.7200, -96.7917 |
| Nearest City | Watertown (33 km) |
| Population Exposed | 45.7K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-04T03:24:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.62c01319be1a8bd62f24a01b5a06d6f3fe369d20.001.1 |
Score Breakdown
Technical Details
| Event | Flood Warning |
| Urgency | Expected |
| Certainty | Likely |
| AreaDesc | Codington, SD; Deuel, SD; Hamlin, SD |
| Headline | Flood Warning issued June 3 at 10:24PM CDT until June 4 at 8:00AM CDT by NWS Aberdeen SD |
| Expires | 2026-06-04T08:00:00-05:00 |
| SenderName | NWS Aberdeen SD |
| HasExactCoords | true |
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 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.
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