Right now
The most recent data we hold from NOAA arrived 12 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
This alert expired on 4 July 2026 at 22:30 UTC. It is kept here as a record.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 4 at 4:36PM CDT until July 4 at 5:30PM CDT by NWS Twin Cities/Chanhassen MN
Urban PEI: 82,630 within a heuristic 50 km radius; not unique people.
How we know
3 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 | 0.87/1 |
| Coordinates | 45.9152, -94.0031 |
| Nearest City | Sartell (37 km) |
| Urban exposure index (PEI) | 82.6K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-04T21:36:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.caaed1e63b8ac691b1c6a59e0dd73a0e |
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: 2026-07-04T21:36:00.000Z.
First archived: 2026-07-04T21:43:01.436Z. 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 | Kanabec, MN; Mille Lacs, MN; Morrison, MN; Stearns, MN; Aitkin, MN and 1 more areas |
| Headline | Severe Thunderstorm Warning issued July 4 at 4:36PM CDT until July 4 at 5:30PM CDT by NWS Twin Cities/Chanhassen MN |
| Expires | 2026-07-04T17:30:00-05:00 |
| SenderName | NWS Twin Cities/Chanhassen MN |
| HasExactCoords | true |
| MergedCount | 5 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.caaed1e63b8ac691b1c6a59e0dd73a0e6ef78fa4.001.1","noaa_urn:oid:2.49.0.1.840.0.7dd37c085807e9260887ec83393c624499758d28.001.1","noaa_urn:oid:2.49.0.1.840.0.f974a772e0295f70f29e920dd491728ec1e823c0.001.1","noaa_urn:oid:2.49.0.1.840.0.a5c020198d710972fe5ddf8ed5a65d1ab258944b.001.1","noaa_urn:oid:2.49.0.1.840.0.fe5a2f31da09580b04c4dae8513ef53c42617af4.001.1"] |
| Iem TypeSummary | H |
| Iem Magnitude | 1 |
| Iem Unit | Inch |
| Iem City | 3 ESE Aitkin |
| Iem County | Aitkin |
| Iem State | MN |
| Iem Wfo | DLH |
| MergedSources | [{"id":"iem_H_46.530_-93.670_1783198620000","source":"iem","severity":"low","severityValue":25,"timestamp":1783198620000,"latitude":46.53,"longitude":-93.67},{"id":"iem_H_46.520_-93.650_1783198500000","source":"iem","severity":"low","severityValue":25,"timestamp":1783198500000,"latitude":46.52,"longitude":-93.65}] |
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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