This alert expired on 13 March 2026 at 01:15 UTC. It is kept here as a record.
It is the 87th strongest of the 113 detections recorded within 20 km of this point since 13 March 2026.
What the source measured
NOAA reported: Flood Warning issued March 11 at 8:07PM CDT until March 16 at 8:00AM CDT by NWS Shreveport LA
An estimated 103,700 people live within 50 km of this point.
Nearby, since 13 March 2026
- March 16, 2026 · score 49 · 5.2 km
- March 15, 2026 · score 49 · 5.2 km
- June 2, 2026 · score 43 · 11.4 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 43 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) | 43 / 100 |
| Our confidence | 78% |
| Coordinates | 32.1663, -95.3659 |
| Nearest City | Tyler (21 km) |
| Population Exposed | 103.7K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-03-13T06:00:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flood-Warning_noaa_urn-oid-2_49_0_1_840_0_7200c6ce8127de634ab1e7ad0a505b19 |
Score Breakdown
Technical Details
| Event | Flood Warning |
| Urgency | Expected |
| Certainty | Likely |
| AreaDesc | Nacogdoches, TX; Rusk, TX; San Augustine, TX; Shelby, TX; Angelina, TX; Polk, TX; Trinity, TX; Angelina, TX; Nacogdoches, TX and 4 more areas |
| Headline | Flood Warning issued March 11 at 8:07PM CDT until March 16 at 8:00AM CDT by NWS Shreveport LA |
| Expires | 2026-03-12T20:15:00-05:00 |
| SenderName | NWS Shreveport LA |
| HasExactCoords | true |
| MergedCount | 7 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.7200c6ce8127de634ab1e7ad0a505b19c08f1e75.001.1","noaa_urn:oid:2.49.0.1.840.0.b9f1e8f75ab079cd621cd32f26b2f09a8997b7d7.001.1","noaa_urn:oid:2.49.0.1.840.0.947cb1035770ebb42cf91df81a0151eb8a66b885.001.1","noaa_urn:oid:2.49.0.1.840.0.7d9ff19c0e64be9f5a9e4bb05280007174ac86e8.001.1","noaa_urn:oid:2.49.0.1.840.0.05c06d12b52953b2e9c8e28dc25eb4ac1965db17.001.1","noaa_urn:oid:2.49.0.1.840.0.410a954d35a2773d175bea46f99758b2dcfbf01f.001.1","noaa_urn:oid:2.49.0.1.840.0.397e0a059c12a3ec34b3982ac8bfaee5d31f4ac7.002.1"] |
Safety Information
During flooding: never walk, swim, or drive through floodwaters. Six inches of moving water can knock you down, and one foot of water can sweep away a vehicle. Move to higher ground if waters rise. After flooding, avoid contact with floodwater which may contain sewage, chemicals, or debris. Follow local emergency service guidance.
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 43/100, near Tyler (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.