Right now
The most recent data we hold from NOAA arrived 68 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
One other detection within 20 km in the last 24 hours, 2 km from here.
This alert expired on 28 June 2026 at 07:15 UTC. It is kept here as a record.
No stronger detection stands among the 44 recorded within 20 km of this point since 15 March 2026 — 10 others scored the same. The last comparable one was on 10 June 2026. One more was recorded here in the fortnight before it.
What the source measured
NOAA reported: Flood Warning issued June 27 at 11:08PM CDT until June 28 at 2:15AM CDT by NWS Aberdeen SD
Nearby, since 15 March 2026
- September 8, 2026 · score 16 · 14.4 km
- September 7, 2026 · score 16 · 14.4 km
How we know
4 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 22 out of 100.
This is our versioned heuristic index, not source severity or a calibrated probability. Urban PEI does not count unique people.
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 |
| Legacy data-support index | 0.70/1 |
| Coordinates | 44.3633, -100.3100 |
| Nearest City | Aberdeen (188 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-06-28T04:08:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.7fe3bc982b3a919b4c12c35c4cd0b71c5959e2a8.001.1 |
Physical priority index · v1. Heuristic priority, not calibrated probability, predictive accuracy or damage. The legacy data-support index combines assigned source support and field availability. Urban PEI is distance-weighted and does not count unique people; zero does not establish that nobody is present. Model cards.
Source and revision timeline
Source: noaa. Occurrence: 2026-06-28T04:08:00.000Z.
First archived: 2026-06-28T05:53:16.193Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
Score Breakdown
Technical Details
| Event | Flood Warning |
| Urgency | Expected |
| Certainty | Likely |
| AreaDesc | Hughes, SD; Stanley, SD |
| Headline | Flood Warning issued June 27 at 11:08PM CDT until June 28 at 2:15AM CDT by NWS Aberdeen SD |
| Expires | 2026-06-28T02:15:00-05:00 |
| SenderName | NWS Aberdeen SD |
| HasExactCoords | true |
| Iem TypeSummary | G |
| Iem Magnitude | 53 |
| Iem Unit | mph |
| Iem City | 3 ENE Midland |
| Iem County | Haakon |
| Iem State | SD |
| Iem Wfo | UNR |
| MergedSources | [{"id":"iem_E_44.360_-100.380_1782619680000","source":"iem","severity":"low","severityValue":25,"timestamp":1782619680000,"latitude":44.36,"longitude":-100.38},{"id":"iem_G_44.080_-101.140_1782611940000","source":"iem","severity":"low","severityValue":25,"timestamp":1782611940000,"latitude":44.08,"longitude":-101.14},{"id":"iem_G_44.090_-101.090_1782612300000","source":"iem","severity":"low","severityValue":25,"timestamp":1782612300000,"latitude":44.09,"longitude":-101.09}] |
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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