Right now
The most recent data we hold from NOAA arrived 2 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 30 June 2026 at 08:45 UTC. It is kept here as a record.
It is the 13th strongest of the 51 detections recorded within 20 km of this point since 15 March 2026. Another comparable one was recorded here earlier the same day. 8 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 30 at 2:43AM CDT until June 30 at 3:45AM CDT by NWS Sioux Falls SD
Nearby, since 15 March 2026
- June 28, 2026 · score 22 · 7.3 km
- September 6, 2026 · 8.3 km
- May 18, 2026 · score 46 · 15.5 km
How we know
4 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 16 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) | 16 / 100 |
| Legacy data-support index | 0.70/1 |
| Coordinates | 43.5736, -94.9440 |
| Nearest City | Mankato (99 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-06-30T07:43:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.7df33a86a922adf2259fefca7d81b820 |
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: 2026-06-30T07:43:00.000Z.
First archived: 2026-06-30T07:46:38.736Z. 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 | Cottonwood, MN; Jackson, MN; Murray, MN; Nobles, MN; Emmet, IA; Kossuth, IA; Palo Alto, IA; Clay, IA; Dickinson, IA; O'Brien, IA; Osceola, IA; Jackson, MN; Nobles, MN |
| Headline | Severe Thunderstorm Warning issued June 30 at 2:43AM CDT until June 30 at 3:45AM CDT by NWS Sioux Falls SD |
| Expires | 2026-06-30T03:45:00-05:00 |
| SenderName | NWS Sioux Falls SD |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.7df33a86a922adf2259fefca7d81b82066ca763a.001.1","noaa_urn:oid:2.49.0.1.840.0.c2d782ee506297ee53f90ca792c6001290311cab.001.1","noaa_urn:oid:2.49.0.1.840.0.a71ccd627b03eb12b95d86eed7a700c37ed4d4e4.001.1"] |
| Spc ReportType | wind |
| Spc Speed | 61 |
| Spc Location | 3 SE Little Rock |
| Spc County | Osceola |
| Spc State | IA |
| Spc Comments | Davis Personal Weather Station. (FSD) |
| MergedSources | [{"id":"spc_wind_43.31_-95.79_102","source":"spc","severity":"medium","severityValue":45,"timestamp":1782803400000,"latitude":43.31,"longitude":-95.79},{"id":"spc_wind_43.30_-95.55_103","source":"spc","severity":"medium","severityValue":45,"timestamp":1782803820000,"latitude":43.3,"longitude":-95.55},{"id":"spc_wind_43.41_-95.84_104","source":"spc","severity":"medium","severityValue":45,"timestamp":1782803940000,"latitude":43.41,"longitude":-95.84}] |
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 in this area?