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.
Nothing else has been detected within 20 km in the last 24 hours.
This alert expired on 3 July 2026 at 04:15 UTC. It is kept here as a record.
No stronger detection stands among the 136 recorded within 20 km of this point since 17 March 2026 — 45 others scored the same. Another comparable one was recorded here earlier the same day. 29 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 2 at 9:28PM MDT until July 2 at 10:15PM MDT by NWS Rapid City SD
Urban PEI: 73,569 within a heuristic 50 km radius; not unique people.
Nearby, since 17 March 2026
- June 3, 2026 · score 39 · 11.8 km
- June 5, 2026 · score 39 · 14.7 km
- July 2, 2026 · score 39 · 15.6 km
How we know
12 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 39 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) | 39 / 100 |
| Legacy data-support index | 0.90/1 |
| Coordinates | 44.2820, -102.7260 |
| Nearest City | Rapid City (46 km) |
| Urban exposure index (PEI) | 73.6K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-03T03:28:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.e8e0b44f2406c99d7b80f2cca7ea463d928920b6.001.1 |
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: 2026-07-03T03:28:00.000Z.
First archived: 2026-07-03T03:56:10.666Z. 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 | Meade, SD; Pennington, SD |
| Headline | Severe Thunderstorm Warning issued July 2 at 9:28PM MDT until July 2 at 10:15PM MDT by NWS Rapid City SD |
| Expires | 2026-07-02T22:15:00-06:00 |
| SenderName | NWS Rapid City SD |
| HasExactCoords | true |
| Iem TypeSummary | G |
| Iem Magnitude | 53 |
| Iem Unit | mph |
| Iem City | 5 WNW New Underwood |
| Iem County | Pennington |
| Iem State | SD |
| Iem Wfo | UNR |
| MergedSources | [{"id":"iem_G_44.560_-102.720_1783049580000","source":"iem","severity":"low","severityValue":25,"timestamp":1783049580000,"latitude":44.56,"longitude":-102.72},{"id":"iem_G_44.230_-102.830_1783048500000","source":"iem","severity":"low","severityValue":25,"timestamp":1783048500000,"latitude":44.23,"longitude":-102.83},{"id":"iem_H_44.500_-102.040_1783044600000","source":"iem","severity":"low","severityValue":25,"timestamp":1783044600000,"latitude":44.5,"longitude":-102.04},{"id":"iem_G_44.240_-102.830_1783049160000","source":"iem","severity":"low","severityValue":25,"timestamp":1783049160000,"latitude":44.24,"longitude":-102.83},{"id":"iem_H_44.090_-103.180_1783041540000","source":"iem","severity":"low","severityValue":25,"timestamp":1783041540000,"latitude":44.09,"longitude":-103.18},{"id":"iem_H_44.230_-103.040_1783046400000","source":"iem","severity":"low","severityValue":25,"timestamp":1783046400000,"latitude":44.23,"longitude":-103.04},{"id":"iem_H_44.520_-102.820_1783036140000","source":"iem","severity":"low","severityValue":25,"timestamp":1783036140000,"latitude":44.52,"longitude":-102.82},{"id":"iem_H_44.470_-103.420_1783029300000","source":"iem","severity":"low","severityValue":25,"timestamp":1783029300000,"latitude":44.47,"longitude":-103.42},{"id":"iem_G_44.230_-102.830_1783047900000","source":"iem","severity":"low","severityValue":25,"timestamp":1783047900000,"latitude":44.23,"longitude":-102.83},{"id":"iem_H_44.550_-102.650_1783037760000","source":"iem","severity":"low","severityValue":25,"timestamp":1783037760000,"latitude":44.55,"longitude":-102.65},{"id":"iem_G_44.120_-102.930_1783049400000","source":"iem","severity":"low","severityValue":25,"timestamp":1783049400000,"latitude":44.12,"longitude":-102.93}] |
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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