Right now
The most recent data we hold from NOAA arrived 7 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 02:15 UTC. It is kept here as a record.
No stronger detection stands among the 127 recorded within 20 km of this point since 15 March 2026 — 35 others scored the same. Another comparable one was recorded here earlier the same day. 18 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 3 at 7:24PM MDT until July 3 at 8:15PM MDT by NWS Rapid City SD
Nearby, since 15 March 2026
- July 31, 2026 · score 22 · 8.8 km
How we know
6 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 | 43.3260, -103.5720 |
| Nearest City | Rapid City (88 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-07-04T01:24:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.2ee0025b4d64aea31e33b26ab11ee653548ac338.001.1 |
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: 2026-07-04T01:24:00.000Z.
First archived: 2026-07-04T01:41:37.350Z. 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 | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Fall River, SD |
| Headline | Severe Thunderstorm Warning issued July 3 at 7:24PM MDT until July 3 at 8:15PM MDT by NWS Rapid City SD |
| Expires | 2026-07-03T20:15:00-06:00 |
| SenderName | NWS Rapid City SD |
| HasExactCoords | true |
| Iem TypeSummary | H |
| Iem Magnitude | 1 |
| Iem Unit | inch |
| Iem City | 1 WSW Red Shirt |
| Iem County | Oglala Lakota |
| Iem State | SD |
| Iem Wfo | UNR |
| MergedSources | [{"id":"iem_H_43.470_-103.970_1783125900000","source":"iem","severity":"low","severityValue":25,"timestamp":1783125900000,"latitude":43.47,"longitude":-103.97},{"id":"iem_H_43.770_-103.400_1783122600000","source":"iem","severity":"low","severityValue":25,"timestamp":1783122600000,"latitude":43.77,"longitude":-103.4},{"id":"iem_H_43.950_-103.330_1783110960000","source":"iem","severity":"low","severityValue":25,"timestamp":1783110960000,"latitude":43.95,"longitude":-103.33},{"id":"iem_H_43.480_-103.980_1783125780000","source":"iem","severity":"low","severityValue":25,"timestamp":1783125780000,"latitude":43.48,"longitude":-103.98},{"id":"iem_H_43.660_-102.920_1783119600000","source":"iem","severity":"low","severityValue":25,"timestamp":1783119600000,"latitude":43.66,"longitude":-102.92}] |
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 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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