Right now
The most recent data we hold from NOAA arrived 28 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 10:45 UTC. It is kept here as a record.
No stronger detection stands among the 189 recorded within 20 km of this point since 12 March 2026 — 13 others scored the same. Another comparable one was recorded here earlier the same day. 14 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Tornado Warning issued June 18 at 4:56AM CDT until June 18 at 5:45AM CDT by NWS New Orleans LA
Urban PEI: 896,392 within a heuristic 50 km radius; not unique people.
Nearby, since 12 March 2026
- July 7, 2026 · score 41 · 0.9 km
- September 21, 2026 · score 41 · 2.7 km
- September 22, 2026 · score 41 · 4.1 km
How we know
2 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 72 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 | Critical |
| Calamity Score (ours) | 72 / 100 |
| Legacy data-support index | 0.84/1 |
| Coordinates | 30.0723, -90.2049 |
| Nearest City | Kenner (10 km) |
| Urban exposure index (PEI) | 896.4K within 50 km |
| Impact Tier | catastrophic |
| Timestamp | 2026-06-18T09:56:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Tornado Warning_noaa_urn:oid:2.49.0.1.840.0.0613523017ebaa5ea819096c4b0d1231 |
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: 2026-06-18T09:56:00.000Z.
First archived: 2026-06-18T09:59:44.250Z. 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 Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | St. Tammany, LA; St. Charles, LA |
| Headline | Tornado Warning issued June 18 at 4:56AM CDT until June 18 at 5:45AM CDT by NWS New Orleans LA |
| Expires | 2026-06-18T05:45:00-05:00 |
| SenderName | NWS New Orleans LA |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.0613523017ebaa5ea819096c4b0d12314c2599dc.001.1","noaa_urn:oid:2.49.0.1.840.0.ae107e8a0981d46b67df9fc468d470f5fdbdf158.001.1","noaa_urn:oid:2.49.0.1.840.0.03657195ebbac76e58ef5c69eab5da9252f72409.001.1"] |
| Iem TypeSummary | F |
| Iem City | 3 ESE Destrehan |
| Iem County | St. Charles |
| Iem State | LA |
| Iem Wfo | LIX |
| Iem Remark | Streets flooding up to 6 inches deep in St. Rose. |
| MergedSources | [{"id":"iem_F_29.950_-90.320_1781774400000","source":"iem","severity":"low","severityValue":25,"timestamp":1781774400000,"latitude":29.95,"longitude":-90.32}] |
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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