This alert expired on 18 June 2026 at 09:45 UTC. It is kept here as a record.
No stronger detection stands among the 45 recorded within 20 km of this point since 18 June 2026 — 23 others scored the same. Another comparable one was recorded here earlier the same day. 29 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Tornado Warning issued June 18 at 4:18AM CDT until June 18 at 4:45AM CDT by NWS New Orleans LA
An estimated 905,341 people live within 50 km of this point.
Nearby, since 18 June 2026
- June 20, 2026 · score 48 · 5.4 km
- June 18, 2026 · score 72 · 6.5 km
- June 18, 2026 · score 72 · 10.4 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 72 out of 100, at 79 % 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) | 72 / 100 |
| Our confidence | 79% |
| Coordinates | 29.7572, -90.4760 |
| Nearest City | Houma (29 km) |
| Population Exposed | 905.3K within 50 km |
| Impact Tier | catastrophic |
| Timestamp | 2026-06-18T09:18:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Tornado Warning_noaa_urn:oid:2.49.0.1.840.0.3eb3a80ee5e7256a6d6cc9e549f0bbc7 |
Score Breakdown
Technical Details
| Event | Tornado Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | St. Charles, LA; Lafourche, LA |
| Headline | Tornado Warning issued June 18 at 4:18AM CDT until June 18 at 4:45AM CDT by NWS New Orleans LA |
| Expires | 2026-06-18T04:45:00-05:00 |
| SenderName | NWS New Orleans LA |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.3eb3a80ee5e7256a6d6cc9e549f0bbc76b89a906.001.1","noaa_urn:oid:2.49.0.1.840.0.60a493ed200c9f0c63e3d20b8c6a42c48a53798b.002.1","noaa_urn:oid:2.49.0.1.840.0.2a8267b65f598f1b97d6d4c35d6bad2cd0cac48f.001.1"] |
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 72/100, near Houma (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.