This alert expired on 15 March 2026 at 23:00 UTC. It is kept here as a record.
It is the 52nd strongest of the 67 detections recorded within 20 km of this point since 15 March 2026. Another comparable one was recorded here earlier the same day. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued March 15 at 5:34PM CDT until March 15 at 6:00PM CDT by NWS Shreveport LA
Nearby, since 15 March 2026
- March 16, 2026 · score 39 · 7.8 km
- May 19, 2026 · score 43 · 12.6 km
- June 20, 2026 · score 43 · 17.5 km
How we know
Confirmed by 3 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 | 32.9705, -93.8940 |
| Nearest City | Shreveport (51 km) |
| Impact Tier | minor |
| Timestamp | 2026-03-15T22:34:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.1bf5a581434642a8a8e52057c9a267bd |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Columbia, AR; Lafayette, AR; Miller, AR; Bossier, LA; Caddo, LA; Cass, TX; Bossier, LA; Caddo, LA; Cass, TX; Harrison, TX; Marion, TX; Cass, TX; Cherokee, TX; Gregg, TX; Harrison, TX; Marion, TX; Panola, TX; Rusk, TX and 5 more areas |
| Headline | Severe Thunderstorm Warning issued March 15 at 5:34PM CDT until March 15 at 6:00PM CDT by NWS Shreveport LA |
| Expires | 2026-03-15T18:00:00-05:00 |
| SenderName | NWS Shreveport LA |
| HasExactCoords | true |
| MergedCount | 8 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.1bf5a581434642a8a8e52057c9a267bdffabee2c.001.1","noaa_urn:oid:2.49.0.1.840.0.f13e43484622d5ea55bbe617015330d215c6f3fd.001.1","noaa_urn:oid:2.49.0.1.840.0.c4fe3b5401bccb9b32221e7911f109a01681a622.002.1","noaa_urn:oid:2.49.0.1.840.0.f90c73c7ffb1f56d947f07cb3719149bb397f4bd.001.1","noaa_urn:oid:2.49.0.1.840.0.3c53c7b141ae3912c9804e5b0f7b989ebcce7e44.001.1","noaa_urn:oid:2.49.0.1.840.0.3f41c135ab37a648393a558c727874b06ddd54e0.001.1","noaa_urn:oid:2.49.0.1.840.0.28958da71783616b9cdb017490d8d2091e29fe66.001.1","noaa_urn:oid:2.49.0.1.840.0.49dc41ffbf3e47d188b5c4ce0e3d02282c8486d4.002.1"] |
| Spc ReportType | wind |
| Spc Speed | 65 |
| Spc Location | Atlanta |
| Spc County | Cass |
| Spc State | TX |
| Spc Comments | (SHV) |
| Iem TypeSummary | G |
| Iem Magnitude | 65 |
| Iem Unit | MPH |
| Iem City | Atlanta |
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.
Want to know when something happens in this area?
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.