This alert expired on 12 March 2026 at 01:15 UTC. It is kept here as a record.
It is the strongest of the 10 detections recorded within 20 km of this point since 9 March 2026. The last comparable one was on 10 March 2026. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Tornado Warning issued March 11 at 7:38PM CDT until March 11 at 8:15PM CDT by NWS New Orleans LA
An estimated 44,743 people live within 50 km of this point.
Nearby, since 9 March 2026
- May 8, 2026 · score 43 · 10.6 km
- March 10, 2026 · score 45 · 17.5 km
- March 9, 2026 · score 45 · 20.6 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 58 out of 100, at 84 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | critical |
| Calamity Score (ours) | 58 / 100 |
| Our confidence | 84% |
| Coordinates | 30.9135, -91.0350 |
| Nearest City | Zachary (32 km) |
| Population Exposed | 44.7K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-03-12T00:38:00.000Z |
Score Breakdown
Technical Details
| Event | Tornado Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Pointe Coupee, LA; West Feliciana, LA; Amite, MS; Pike, MS |
| Headline | Tornado Warning issued March 11 at 7:38PM CDT until March 11 at 8:15PM CDT by NWS New Orleans LA |
| Expires | 2026-03-11T20:15:00-05:00 |
| SenderName | NWS New Orleans LA |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.1fef07421650236a0f7fc7619cf512dc99b02de8.001.1","noaa_urn:oid:2.49.0.1.840.0.81bf68310eaeed2bba4d6a6fbb416eec03db8b2d.001.1"] |
| Spc ReportType | wind |
| Spc Speed | UNK |
| Spc Location | Simmesport |
| Spc County | Avoyelles |
| Spc State | LA |
| Spc Comments | Avoyelles 911 reports a tree down in Simmesport. (LCH) |
| MergedSources | [{"id":"spc_wind_30.98_-91.81_129","source":"spc","severity":"medium","severityValue":45,"timestamp":1773274440000,"latitude":30.98,"longitude":-91.81}] |
Safety Information
If a tornado warning is issued: go to a basement or an interior room on the lowest floor, away from windows. A vehicle and a mobile home are not shelter. Cover your head and neck. Wait for the official all-clear before going outside, and watch for downed power lines and gas leaks afterwards.
Series begins 10 February 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.
Calamity.live data shows a weather event with CalamityScore 58/100, near Zachary (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 194 scientific monitoring sources.