This alert expired on 15 March 2026 at 22:45 UTC. It is kept here as a record.
It is the strongest of the 7 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 4:40PM CDT until March 15 at 5:45PM CDT by NWS Shreveport LA
An estimated 64,801 people live within 50 km of this point.
Nearby, since 15 March 2026
- March 15, 2026 · score 34 · 19.8 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, at 78 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | medium |
| Calamity Score (ours) | 39 / 100 |
| Our confidence | 78% |
| Coordinates | 34.8797, -93.1247 |
| Nearest City | Hot Springs (43 km) |
| Population Exposed | 64.8K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-03-15T21:40:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe-Thunderstorm-Warning_noaa_urn-oid-2_49_0_1_840_0_632838e70ac33e245cb84bf4241a1991 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Cass, TX; Cherokee, TX; Gregg, TX; Harrison, TX; Marion, TX; Morris, TX; Panola, TX; Rusk, TX; Smith, TX; Upshur, TX; Anderson, TX; Henderson, TX; Bowie, TX; Camp, TX; Cass, TX; Morris, TX; Titus, TX and 16 more areas |
| Headline | Severe Thunderstorm Warning issued March 15 at 4:40PM CDT until March 15 at 5:45PM CDT by NWS Shreveport LA |
| Expires | 2026-03-15T17:45:00-05:00 |
| SenderName | NWS Shreveport LA |
| HasExactCoords | true |
| MergedCount | 19 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.632838e70ac33e245cb84bf4241a1991a7bb47fc.001.1","noaa_urn:oid:2.49.0.1.840.0.d068a4afd14d5d3ad857db4bf968413e8c4299ac.001.1","noaa_urn:oid:2.49.0.1.840.0.e10a72ed4fdf6454e56b590001b8acf412c08332.002.1","noaa_urn:oid:2.49.0.1.840.0.9a42a731959800cfea6e822612e246c78485c78c.001.1","noaa_urn:oid:2.49.0.1.840.0.b2ed0cba55d3bfb4fa39f653c0bbc160a373ed92.001.1","noaa_urn:oid:2.49.0.1.840.0.5e0d9aae7e03060b534cf32d9ca6b5f456202409.001.1","noaa_urn:oid:2.49.0.1.840.0.409a71fa7944ac86f228b505436e4d7e6a6a52a1.002.1","noaa_urn:oid:2.49.0.1.840.0.504ec44c2fd5295186901abc659e5af737a40a6a.001.1","noaa_urn:oid:2.49.0.1.840.0.aed5e3bd2a71f04925cbd63da854747103655918.001.1","noaa_urn:oid:2.49.0.1.840.0.9bbbf439088c184af95ba4e9aca4f076064a0dbe.002.1","noaa_urn:oid:2.49.0.1.840.0.7f4cfcb198ddbd389523f519d54813af63e2dc8d.002.1","noaa_urn:oid:2.49.0.1.840.0.a23db031f594d1486aad2d8b73f21001190d6f1e.002.1","noaa_urn:oid:2.49.0.1.840.0.63fcdf5566ce08f43791f680830c53aceecdba89.001.1","noaa_urn:oid:2.49.0.1.840.0.4f222df225243cbf4eebb08db4f50620401265ed.001.1","noaa_urn:oid:2.49.0.1.840.0.33455e8a84d07b20409d44833c95010475186f95.001.1","noaa_urn:oid:2.49.0.1.840.0.c44984404c618ee77bdcdcfc0b260090a9256e18.001.1","noaa_urn:oid:2.49.0.1.840.0.4cbad0f94b5a137dcf651248ec4e1b0b77d2e64a.001.1","noaa_urn:oid:2.49.0.1.840.0.9caff2d44ded84b2947b81eb5644cec2d9f6aeb2.002.1","noaa_urn:oid:2.49.0.1.840.0.089b2f65a32a1bdd8dc21f9837045baa3fe161fe.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 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 39/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.