Right now
The most recent data we hold from NOAA arrived 20 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
Nothing else has been detected within 20 km in the last 24 hours.
This alert expired on 18 June 2026 at 11:00 UTC. It is kept here as a record.
No stronger detection stands among the 60 recorded within 20 km of this point since 8 March 2026 — 23 others scored the same. The last comparable one was on 3 June 2026.
What the source measured
NOAA reported: Tornado Watch issued June 17 at 10:23PM CDT until June 18 at 6:00AM CDT by NWS New Orleans LA
Urban PEI: 317,507 within a heuristic 50 km radius; not unique people.
Nearby, since 8 March 2026
- July 23, 2026 · score 43 · 0.0 km
- July 2, 2026 · score 43 · 0.0 km
- July 1, 2026 · score 43 · 0.0 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 55 out of 100.
This is our versioned heuristic index, not source severity or a calibrated probability. Urban PEI does not count unique people.
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) | 55 / 100 |
| Legacy data-support index | 0.80/1 |
| Coordinates | 30.5000, -91.2000 |
| Nearest City | Baton Rouge (7 km) |
| Urban exposure index (PEI) | 317.5K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-18T03:23:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Tornado Watch_noaa_urn:oid:2.49.0.1.840.0.8409f2b9e681f954d41ab77852cee21c |
Physical priority index · v1. Heuristic priority, not calibrated probability, predictive accuracy or damage. The legacy data-support index combines assigned source support and field availability. Urban PEI is distance-weighted and does not count unique people; zero does not establish that nobody is present. Model cards.
Source and revision timeline
Source: noaa. Occurrence: 2026-06-18T03:23:00.000Z.
First archived: 2026-06-18T10:42:03.510Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
Score Breakdown
Technical Details
| Event | Tornado Watch |
| Urgency | Future |
| Certainty | Possible |
| AreaDesc | Lake Maurepas; Lake Pontchartrain; Mississippi Sound; Lake Salvador and Lake Cataouatche; Lake Borgne; Breton Sound; Chandeleur Sound; Terrebonne Bay; Barataria Bay; Coastal Waters from Port Fourchon LA to Lower Atchafalaya River LA out 20 nm; Coastal waters from the Southwest Pass of the Mississippi River to Port Fourchon Louisiana out 20 NM; Coastal Waters from Boothville LA to Southwest Pass of the Mississippi River out 20 nm; Coastal waters from Pascagoula Mississippi to Stake Island out 20 NM; Ascension, LA; Assumption, LA; East Baton Rouge, LA; East Feliciana, LA; Iberville, LA; Jefferson, LA; Lafourche, LA; Livingston, LA; Orleans, LA; Plaquemines, LA; St. Bernard, LA; St. Charles, LA; St. Helena, LA; St. James, LA; St. John The Baptist, LA; St. Tammany, LA; Tangipahoa, LA; Terrebonne, LA; Washington, LA; West Baton Rouge, LA; Hancock, MS; Harrison, MS; Jackson, MS; Pearl River, MS |
| Headline | Tornado Watch issued June 17 at 10:23PM CDT until June 18 at 6:00AM CDT by NWS New Orleans LA |
| Expires | 2026-06-18T06:00:00-05:00 |
| SenderName | NWS New Orleans LA |
| HasExactCoords | false |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.8409f2b9e681f954d41ab77852cee21cad07b769.002.1","noaa_urn:oid:2.49.0.1.840.0.8409f2b9e681f954d41ab77852cee21cad07b769.001.1"] |
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 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.
Review the area, threshold and delivery channel in your account.
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