Right now
The most recent data we hold from NOAA arrived 6 hours 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 00:45 UTC. It is kept here as a record.
It is the 4th strongest of the 40 detections recorded within 20 km of this point since 15 March 2026. Another comparable one was recorded here earlier the same day. 6 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 2 at 6:55PM CDT until July 2 at 7:45PM CDT by NWS Sioux Falls SD
Urban PEI: 23,657 within a heuristic 50 km radius; not unique people.
Nearby, since 15 March 2026
- July 12, 2026 · score 34 · 6.3 km
- July 11, 2026 · score 34 · 6.3 km
- June 8, 2026 · score 34 · 7.0 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.
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) | 34 / 100 |
| Legacy data-support index | 0.79/1 |
| Coordinates | 44.3723, -96.9059 |
| Nearest City | Brookings (11 km) |
| Urban exposure index (PEI) | 23.7K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-02T23:55:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.a4fb886bef8396d705634f1386a23104 |
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: 2026-07-02T23:55:00.000Z.
First archived: 2026-07-02T23:58:38.411Z. 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 | Pipestone, MN; Lake, SD; Minnehaha, SD; Moody, SD; Codington, SD; Deuel, SD; Hamlin, SD; Lac qui Parle, MN; Yellow Medicine, MN and 3 more areas |
| Headline | Severe Thunderstorm Warning issued July 2 at 6:55PM CDT until July 2 at 7:45PM CDT by NWS Sioux Falls SD |
| Expires | 2026-07-02T19:45:00-05:00 |
| SenderName | NWS Sioux Falls SD |
| HasExactCoords | true |
| MergedCount | 6 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.a4fb886bef8396d705634f1386a231040ee4f781.001.1","noaa_urn:oid:2.49.0.1.840.0.96c27f3f7a81d661c1619556fae98baee1dbb377.001.1","noaa_urn:oid:2.49.0.1.840.0.9a65dd594df454a275e58849aa7a972c17aa4ae7.001.1","noaa_urn:oid:2.49.0.1.840.0.dd90379e6d811a22046fa38ad3f958cd35a5ab12.001.1","noaa_urn:oid:2.49.0.1.840.0.475c405cfc3d9b050d35839cb0610e4d96cbab74.002.1","noaa_urn:oid:2.49.0.1.840.0.a6287dfc22e0775b5130028d0ecdfc3c02a78f26.002.1"] |
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.
Review the area, threshold and delivery channel in your account.
Want to know when something happens near Brookings?