This alert expired on 15 March 2026 at 22:30 UTC. It is kept here as a record.
No stronger detection stands among the 247 recorded within 20 km of this point since 15 March 2026 — 3 others scored the same. Another comparable one was recorded here earlier the same day. 3 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Tornado Warning issued March 15 at 5:07PM CDT until March 15 at 5:30PM CDT by NWS Shreveport LA
An estimated 106,107 people live within 50 km of this point.
Nearby, since 15 March 2026
- March 15, 2026 · score 67 · 2.4 km
- March 16, 2026 · score 49 · 16.2 km
- June 2, 2026 · score 43 · 22.6 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 67 out of 100, at 80 % 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) | 67 / 100 |
| Our confidence | 80% |
| Coordinates | 32.4500, -94.6230 |
| Nearest City | Longview (12 km) |
| Population Exposed | 106.1K within 50 km |
| Impact Tier | severe |
| Timestamp | 2026-03-15T22:07:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.5e57ee8ccd1fe439a2b3888aceea7608c34ab3a8.001.1 |
Score Breakdown
Technical Details
| Event | Tornado Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Gregg, TX; Harrison, TX |
| Headline | Tornado Warning issued March 15 at 5:07PM CDT until March 15 at 5:30PM CDT by NWS Shreveport LA |
| Expires | 2026-03-15T17:30:00-05:00 |
| SenderName | NWS Shreveport LA |
| HasExactCoords | true |
| Spc ReportType | hail |
| Spc Speed | 125 |
| Spc Location | 3 SSE Lindale |
| Spc County | Smith |
| Spc State | TX |
| Spc Comments | Half dollar size hail fell along I-20 near Lindale. (SHV) |
| MergedSources | [{"id":"spc_hail_32.47_-95.39_18","source":"spc","severity":"high","severityValue":65,"timestamp":1773609840000,"latitude":32.47,"longitude":-95.39}] |
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 67/100, near Longview (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.