Right now
The most recent data we hold from NOAA arrived 52 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 22 May 2026 at 21:45 UTC. It is kept here as a record.
It is the 4th strongest of the 39 detections recorded within 20 km of this point since 8 May 2026. Another comparable one was recorded here earlier the same day. One more was recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued May 22 at 1:40PM CDT until May 22 at 4:45PM CDT by NWS New Orleans LA
Urban PEI: 307,360 within a heuristic 50 km radius; not unique people.
Nearby, since 8 May 2026
- May 22, 2026 · score 43 · 0.0 km
- June 19, 2026 · score 43 · 9.4 km
- May 24, 2026 · score 67 · 11.0 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 43 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) | 43 / 100 |
| Legacy data-support index | 0.80/1 |
| Coordinates | 30.7135, -88.3549 |
| Nearest City | Tillmans Corner (22 km) |
| Urban exposure index (PEI) | 307.4K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-22T18:40:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flash Flood Warning_noaa_urn:oid:2.49.0.1.840.0.4b11a700bbfeb43a2857b954285b9378 |
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: 2026-05-22T18:40:00.000Z.
First archived: 2026-05-22T20:17:03.160Z. 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 | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Harrison, MS; Baldwin, AL; Mobile, AL; Mobile, AL |
| Headline | Flash Flood Warning issued May 22 at 1:40PM CDT until May 22 at 4:45PM CDT by NWS New Orleans LA |
| Expires | 2026-05-22T16:45:00-05:00 |
| SenderName | NWS New Orleans LA |
| HasExactCoords | true |
| MergedCount | 5 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.4b11a700bbfeb43a2857b954285b93787d85b159.001.1","noaa_urn:oid:2.49.0.1.840.0.5a4aad8e803981f73388c14e0b9cf9cbfbf96eff.001.1","noaa_urn:oid:2.49.0.1.840.0.0f7f268dee18f05c118a26fae8c35d6768ee4769.001.1","noaa_urn:oid:2.49.0.1.840.0.38eb92f81b3e83de8886f0c9c03fb1b036d80a9c.001.1","noaa_urn:oid:2.49.0.1.840.0.ee5233a2548d6d1b7b501e78924e3e34b1a82c29.001.1"] |
Safety Information
During flooding: never walk, swim, or drive through floodwaters. Six inches of moving water can knock you down, and one foot of water can sweep away a vehicle. Move to higher ground if waters rise. After flooding, avoid contact with floodwater which may contain sewage, chemicals, or debris. Follow local emergency service guidance.
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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