Right now
The most recent data we hold from NOAA arrived 65 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 4 July 2026 at 22:15 UTC. It is kept here as a record.
No stronger detection stands among the 50 recorded within 20 km of this point since 15 March 2026 — 9 others scored the same. The last comparable one was on 5 April 2026.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 4 at 4:46PM CDT until July 4 at 5:15PM CDT by NWS Twin Cities/Chanhassen MN
Urban PEI: 82,630 within a heuristic 50 km radius; not unique people.
Nearby, since 15 March 2026
- August 7, 2026 · score 32 · 12.6 km
How we know
5 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 | 45.7121, -94.1257 |
| Nearest City | Sartell (12 km) |
| Urban exposure index (PEI) | 82.6K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-04T21:46:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.0a28fb3f92329cb004440c4511ac6606 |
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: 2026-07-04T21:46:00.000Z.
First archived: 2026-07-04T21:48:07.892Z. 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 | Kandiyohi, MN; Stearns, MN; Stearns, MN; Renville, MN and 2 more areas |
| Headline | Severe Thunderstorm Warning issued July 4 at 4:46PM CDT until July 4 at 5:15PM CDT by NWS Twin Cities/Chanhassen MN |
| Expires | 2026-07-04T17:15:00-05:00 |
| SenderName | NWS Twin Cities/Chanhassen MN |
| HasExactCoords | true |
| MergedCount | 6 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.0a28fb3f92329cb004440c4511ac6606ac545349.001.1","noaa_urn:oid:2.49.0.1.840.0.cf5043f6c3d9949359f6640f2b5461a457cf479b.001.1","noaa_urn:oid:2.49.0.1.840.0.8817acec8aee493ba0af2d8a6a72eca3670fe08e.001.1","noaa_urn:oid:2.49.0.1.840.0.caaed1e63b8ac691b1c6a59e0dd73a0e6ef78fa4.001.1","noaa_urn:oid:2.49.0.1.840.0.f974a772e0295f70f29e920dd491728ec1e823c0.001.1","noaa_urn:oid:2.49.0.1.840.0.fe5a2f31da09580b04c4dae8513ef53c42617af4.001.1"] |
| Iem TypeSummary | H |
| Iem Magnitude | 1 |
| Iem Unit | Inch |
| Iem City | 2 N Long Prairie |
| Iem County | Todd |
| Iem State | MN |
| Iem Wfo | MPX |
| MergedSources | [{"id":"iem_H_45.810_-94.960_1783197000000","source":"iem","severity":"low","severityValue":25,"timestamp":1783197000000,"latitude":45.81,"longitude":-94.96},{"id":"iem_D_45.950_-95.000_1783197480000","source":"iem","severity":"low","severityValue":25,"timestamp":1783197480000,"latitude":45.95,"longitude":-95},{"id":"iem_H_45.740_-94.960_1783198620000","source":"iem","severity":"low","severityValue":25,"timestamp":1783198620000,"latitude":45.74,"longitude":-94.96},{"id":"iem_H_46.010_-94.870_1783197300000","source":"iem","severity":"low","severityValue":25,"timestamp":1783197300000,"latitude":46.01,"longitude":-94.87}] |
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.
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