Right now
The most recent data we hold from NOAA arrived 36 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 1 June 2026 at 18:45 UTC. It is kept here as a record.
It is the 4th strongest of the 48 detections recorded within 20 km of this point since 10 March 2026. Another comparable one was recorded here earlier the same day. 3 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 1 at 1:10PM CDT until June 1 at 1:45PM CDT by NWS Huntsville AL
Urban PEI: 55,437 within a heuristic 50 km radius; not unique people.
Nearby, since 10 March 2026
- September 11, 2026 · score 32 · 5.4 km
- March 10, 2026 · score 39 · 7.1 km
- June 1, 2026 · score 43 · 12.3 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
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 | 0.81/1 |
| Coordinates | 34.3721, -87.3308 |
| Nearest City | Decatur (42 km) |
| Urban exposure index (PEI) | 55.4K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-01T18:10:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.d5a557698e6c083762d0a9274f75e0d3 |
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: 2026-06-01T18:10:00.000Z.
First archived: 2026-06-01T18:14:00.142Z. 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 | Franklin, AL; Colbert, AL; Lawrence, AL; Limestone, AL; Madison, AL; Winston, AL and 2 more areas |
| Headline | Severe Thunderstorm Warning issued June 1 at 1:10PM CDT until June 1 at 1:45PM CDT by NWS Huntsville AL |
| Expires | 2026-06-01T13:45:00-05:00 |
| SenderName | NWS Huntsville AL |
| HasExactCoords | true |
| MergedCount | 5 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.d5a557698e6c083762d0a9274f75e0d335fc6757.002.1","noaa_urn:oid:2.49.0.1.840.0.6622bdd13326d6c2583db5f60ee0f8d7d56f37bc.001.1","noaa_urn:oid:2.49.0.1.840.0.0ea84371b6f768360a08dc8d9ad73c6282f705a9.001.1","noaa_urn:oid:2.49.0.1.840.0.bdc265300f0c26ec0e6de85d6e5ef59f1b991d12.001.1","noaa_urn:oid:2.49.0.1.840.0.8dfa062e01cce1c081e11b52bc72c32c9ed6f0a2.001.1"] |
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.
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