Right now
The most recent data we hold from NOAA arrived 5 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
Nothing else has been detected within 20 km in the last 24 hours.
This alert expired on 4 July 2026 at 03:00 UTC. It is kept here as a record.
No stronger detection stands among the 49 recorded within 20 km of this point since 15 March 2026 — 10 others scored the same. Another comparable one was recorded here earlier the same day. 14 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued July 3 at 6:12PM MDT until July 3 at 9:00PM MDT by NWS Rapid City SD
Nearby, since 15 March 2026
- September 7, 2026 · score 16 · 11.0 km
- July 3, 2026 · score 22 · 20.2 km
How we know
14 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 | 44.0922, -104.3367 |
| Nearest City | Rapid City (88 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-07-04T00:12:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.a870c6f4acc6f87558c57bacf557d4de5e6a6979.001.1 |
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: 2026-07-04T00:12:00.000Z.
First archived: 2026-07-04T01:41:37.358Z. 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 | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Weston, WY |
| Headline | Flash Flood Warning issued July 3 at 6:12PM MDT until July 3 at 9:00PM MDT by NWS Rapid City SD |
| Expires | 2026-07-03T21:00:00-06:00 |
| SenderName | NWS Rapid City SD |
| HasExactCoords | true |
| Iem TypeSummary | H |
| Iem Magnitude | 1.25 |
| Iem Unit | inch |
| Iem City | 7 SE Devils Tower |
| Iem County | Crook |
| Iem State | WY |
| Iem Wfo | UNR |
| MergedSources | [{"id":"iem_H_44.400_-104.370_1783107360000","source":"iem","severity":"low","severityValue":25,"timestamp":1783107360000,"latitude":44.4,"longitude":-104.37},{"id":"iem_H_44.110_-103.530_1783105800000","source":"iem","severity":"low","severityValue":25,"timestamp":1783105800000,"latitude":44.11,"longitude":-103.53},{"id":"iem_H_44.400_-104.370_1783107600000","source":"iem","severity":"low","severityValue":25,"timestamp":1783107600000,"latitude":44.4,"longitude":-104.37},{"id":"iem_H_44.590_-104.710_1783111500000","source":"iem","severity":"low","severityValue":25,"timestamp":1783111500000,"latitude":44.59,"longitude":-104.71},{"id":"iem_H_44.070_-104.370_1783113720000","source":"iem","severity":"low","severityValue":25,"timestamp":1783113720000,"latitude":44.07,"longitude":-104.37},{"id":"iem_H_44.070_-104.370_1783111620000","source":"iem","severity":"low","severityValue":25,"timestamp":1783111620000,"latitude":44.07,"longitude":-104.37},{"id":"iem_H_44.650_-104.600_1783109700000","source":"iem","severity":"low","severityValue":25,"timestamp":1783109700000,"latitude":44.65,"longitude":-104.6},{"id":"iem_H_43.940_-103.570_1783118580000","source":"iem","severity":"low","severityValue":25,"timestamp":1783118580000,"latitude":43.94,"longitude":-103.57},{"id":"iem_H_43.930_-103.570_1783118700000","source":"iem","severity":"low","severityValue":25,"timestamp":1783118700000,"latitude":43.93,"longitude":-103.57},{"id":"iem_H_44.400_-104.370_1783107300000","source":"iem","severity":"low","severityValue":25,"timestamp":1783107300000,"latitude":44.4,"longitude":-104.37},{"id":"iem_H_44.020_-103.840_1783117320000","source":"iem","severity":"low","severityValue":25,"timestamp":1783117320000,"latitude":44.02,"longitude":-103.84},{"id":"iem_H_43.970_-103.760_1783117020000","source":"iem","severity":"low","severityValue":25,"timestamp":1783117020000,"latitude":43.97,"longitude":-103.76},{"id":"iem_H_44.510_-104.620_1783112700000","source":"iem","severity":"low","severityValue":25,"timestamp":1783112700000,"latitude":44.51,"longitude":-104.62}] |
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.
Review the area, threshold and delivery channel in your account.
Want to know when something happens in this area?