Right now
The most recent data we hold from NOAA arrived 4 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 01:00 UTC. It is kept here as a record.
It is the 72nd strongest of the 108 detections recorded within 20 km of this point since 8 May 2026. Another comparable one was recorded here earlier the same day. 19 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued May 21 at 6:02PM CDT until May 21 at 8:00PM CDT by NWS Mobile AL
Nearby, since 8 May 2026
- May 11, 2026 · score 22 · 0.5 km
- May 10, 2026 · score 22 · 0.5 km
- May 8, 2026 · score 34 · 4.0 km
How we know
3 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 22 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) | 22 / 100 |
| Legacy data-support index | 0.69/1 |
| Coordinates | 30.8794, -89.2287 |
| Nearest City | Hattiesburg (50 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-05-21T23:02:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.b3b8f0b59e316d7b37eb008aec01e8154154eeb5.001.1 |
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: 2026-05-21T23:02:00.000Z.
First archived: 2026-05-21T23:14:04.334Z. 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 | Stone, MS |
| Headline | Flash Flood Warning issued May 21 at 6:02PM CDT until May 21 at 8:00PM CDT by NWS Mobile AL |
| Expires | 2026-05-21T20:00:00-05:00 |
| SenderName | NWS Mobile AL |
| HasExactCoords | true |
| Iem TypeSummary | D |
| Iem City | 6 ESE Poplarville |
| Iem County | Pearl River |
| Iem State | MS |
| Iem Wfo | LIX |
| Iem Remark | Report of trees down near Wolf Ridge Lane in Poplarville. Time estimated by radar. |
| MergedSources | [{"id":"iem_F_30.620_-89.650_1779399600000","source":"iem","severity":"low","severityValue":25,"timestamp":1779399600000,"latitude":30.62,"longitude":-89.65},{"id":"iem_D_30.810_-89.430_1779398100000","source":"iem","severity":"low","severityValue":25,"timestamp":1779398100000,"latitude":30.81,"longitude":-89.43}] |
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.
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