Right now
The most recent data we hold from NOAA arrived 1 minute ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
2 other detections within 20 km in the last 24 hours, the nearest 1 km from here.
This alert expired on 21 September 2026 at 23:30 UTC. It is kept here as a record.
It is the 4th strongest of the 20 detections recorded within 20 km of this point since 24 April 2026. Another comparable one was recorded here earlier the same day. 5 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued September 21 at 5:55PM CDT until September 21 at 6:30PM CDT by NWS New Orleans LA
Urban PEI: 23,529 within a heuristic 50 km radius; not unique people.
Nearby, since 24 April 2026
- September 12, 2026 · score 28 · 9.9 km
- May 22, 2026 · score 22 · 14.0 km
- July 13, 2026 · score 34 · 17.6 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 28 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 v5. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 28 / 100 |
| Legacy data-support index | 0.79/1 |
| Coordinates | 32.2252, -89.4736 |
| Nearest City | Brandon (49 km) |
| Urban exposure index (PEI) | 23.5K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-21T22:55:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.faf682a2cca51ea6d966531c8496dac6b76ae52e.002.1 |
Physical priority index · v5. 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: 2026-09-21T22:55:00.000Z.
First archived: 2026-09-21T22:57:58.246Z. 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 | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Washington, LA; Assumption, LA; Iberville, LA; Covington, MS; Forrest, MS; Lamar, MS and 7 more areas |
| Headline | Severe Thunderstorm Warning issued September 21 at 5:55PM CDT until September 21 at 6:30PM CDT by NWS New Orleans LA |
| Expires | 2026-09-21T18:30:00-05:00 |
| SenderName | NWS New Orleans LA |
| HasExactCoords | true |
| MergedCount | 11 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.faf682a2cca51ea6d966531c8496dac6b76ae52e.002.1","noaa_urn:oid:2.49.0.1.840.0.a8ccbefaee542822c2c73829734be7bae2b069b5.001.1","noaa_urn:oid:2.49.0.1.840.0.c72515798bba668849a22183568948f6b26fbc76.001.1","noaa_urn:oid:2.49.0.1.840.0.db740e6b72759f4000c110098538ce4ee22ad154.001.1","noaa_urn:oid:2.49.0.1.840.0.735d2e1b53811df40bcb3007553fccede1c72816.001.1","noaa_urn:oid:2.49.0.1.840.0.a4cba9eda19b1229e2051e1697438f14ed1da647.001.1","noaa_urn:oid:2.49.0.1.840.0.aa7d31e1eee622d7abe0a0a37cdb1538569b4cfb.001.1","noaa_urn:oid:2.49.0.1.840.0.db25037d82d559023b995d470a60b8a8fa04294a.001.1","noaa_urn:oid:2.49.0.1.840.0.10f0d029286e18dfcf1e3f3239f454d63ece5587.001.1","noaa_urn:oid:2.49.0.1.840.0.973788a99592984ef2e6fafb2de0b846c7188f15.001.1","noaa_urn:oid:2.49.0.1.840.0.158a7700a4394384125d92731036983a97fcae86.001.1"] |
Safety Information
Always follow official guidance from your local emergency management agency. This platform provides scientific monitoring data and is not a substitute for official warnings. If you are in immediate danger, contact your local emergency number.
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.
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