Right now
The most recent data we hold from NOAA arrived 29 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 2 July 2026 at 23:15 UTC. It is kept here as a record.
No stronger detection stands among the 19 recorded within 20 km of this point since 2 April 2026 — 6 others scored the same. Another comparable one was recorded here earlier the same day. 4 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 2 at 5:45PM CDT until July 2 at 6:15PM CDT by NWS Aberdeen SD
How we know
3 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 | 0.69/1 |
| Coordinates | 44.2927, -97.6089 |
| Nearest City | Brookings (64 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-07-02T22:45:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.84b0e9ca2a4b47a8f4b1ca4191ce2d50 |
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: 2026-07-02T22:45:00.000Z.
First archived: 2026-07-02T22:49:10.374Z. 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 | Clark, SD; Hamlin, SD; Hanson, SD; Lake, SD; Miner, SD; Sanborn, SD; Beadle, SD; Brookings, SD; Kingsbury, SD and 1 more areas |
| Headline | Severe Thunderstorm Warning issued July 2 at 5:45PM CDT until July 2 at 6:15PM CDT by NWS Aberdeen SD |
| Expires | 2026-07-02T18:15:00-05:00 |
| SenderName | NWS Aberdeen SD |
| HasExactCoords | true |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.84b0e9ca2a4b47a8f4b1ca4191ce2d507beae405.001.1","noaa_urn:oid:2.49.0.1.840.0.c0709946d5b8cd1efe332ec82bcb4a4abe3525a0.001.1","noaa_urn:oid:2.49.0.1.840.0.f1aa51a59699ac313b574063d0765aad9a24d4ad.001.1","noaa_urn:oid:2.49.0.1.840.0.c7961ba5a6226a52568c8424942b63162db0d807.001.1"] |
| Iem TypeSummary | G |
| Iem Magnitude | 73 |
| Iem Unit | MPH |
| Iem City | 1 W Lane |
| Iem County | Jerauld |
| Iem State | SD |
| Iem Wfo | FSD |
| Iem Remark | Mesonet station 305 SD RWIS Lane. |
| MergedSources | [{"id":"iem_G_44.180_-98.210_1783029240000","source":"iem","severity":"low","severityValue":25,"timestamp":1783029240000,"latitude":44.18,"longitude":-98.21},{"id":"iem_G_44.070_-98.450_1783028160000","source":"iem","severity":"low","severityValue":25,"timestamp":1783028160000,"latitude":44.07,"longitude":-98.45}] |
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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