This alert expired on 16 March 2026 at 07:00 UTC. It is kept here as a record.
It is the 5th strongest of the 17 detections recorded within 20 km of this point since 16 March 2026. Another comparable one was recorded here earlier the same day. One more was recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued March 16 at 1:48AM CDT until March 16 at 2:00AM CDT by NWS Huntsville AL
Nearby, since 16 March 2026
- August 9, 2026 · score 22 · 12.3 km
- July 8, 2026 · score 22 · 15.7 km
- August 12, 2026 · score 22 · 16.1 km
How we know
Confirmed by 4 independent sources, including NOAA.
Our own score for this event is 22 out of 100, at 68 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
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 |
| Our confidence | 68% |
| Coordinates | 35.7617, -84.8827 |
| Nearest City | Oak Ridge (62 km) |
| Impact Tier | minor |
| Timestamp | 2026-03-16T06:48:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.450210880e2a02755f38b98ed7c3b3c9 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | DeKalb, AL; Marshall, AL; DeKalb, AL; Jackson, AL; Marshall, AL; Cumberland, TN and 5 more areas |
| Headline | Severe Thunderstorm Warning issued March 16 at 1:48AM CDT until March 16 at 2:00AM CDT by NWS Huntsville AL |
| Expires | 2026-03-16T02:00:00-05:00 |
| SenderName | NWS Huntsville AL |
| HasExactCoords | true |
| MergedCount | 8 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.450210880e2a02755f38b98ed7c3b3c9e088cba1.001.1","noaa_urn:oid:2.49.0.1.840.0.45cf700d80314cf67a6e1a0eace3d15182be2cc2.001.1","noaa_urn:oid:2.49.0.1.840.0.23f3c57dca6abfb4a4b99ed48e7ba8620fae11ee.001.1","noaa_urn:oid:2.49.0.1.840.0.5c8bd28cdb4792455166387b2653fb3e07aea557.001.1","noaa_urn:oid:2.49.0.1.840.0.6d22a227a7732fa7f5ad04cf6b7338808dd78393.001.1","noaa_urn:oid:2.49.0.1.840.0.70ec2d6957f0089344273723828ea66f2c0bf582.001.1","noaa_urn:oid:2.49.0.1.840.0.f91cec0d772b1295695f34b1188cef84ddbceb90.001.1","noaa_urn:oid:2.49.0.1.840.0.efa88db39fa492d35edbc31b40da5a4beaa3d50e.001.1"] |
| Spc ReportType | wind |
| Spc Speed | UNK |
| Spc Location | Dunlap |
| Spc County | Sequatchie |
| Spc State | TN |
| Spc Comments | Several trees down across the county. (MRX) |
| Iem TypeSummary | G |
| Iem Magnitude | 56 |
| Iem Unit | MPH |
| Iem City | 3 W Crossville |
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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Calamity.live data shows a weather event with CalamityScore 22/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.