This alert expired on 8 May 2026 at 23:30 UTC. It is kept here as a record.
It is the 10th strongest of the 30 detections recorded within 20 km of this point since 16 March 2026. The last comparable one was on 16 March 2026.
What the source measured
NOAA reported: Flash Flood Warning issued May 8 at 3:20PM CDT until May 8 at 6:30PM CDT by NWS New Orleans LA
An estimated 443,707 people live within 50 km of this point.
Nearby, since 16 March 2026
- June 16, 2026 · score 43 · 4.0 km
- June 20, 2026 · score 43 · 5.4 km
- August 6, 2026 · score 43 · 5.5 km
How we know
Confirmed by 11 independent sources, including NOAA.
Our own score for this event is 43 out of 100, at 90 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | medium |
| Calamity Score (ours) | 43 / 100 |
| Our confidence | 90% |
| Coordinates | 30.2312, -90.5579 |
| Nearest City | Laplace (19 km) |
| Population Exposed | 443.7K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-08T20:20:00.000Z |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Jefferson, LA; Orleans, LA; Plaquemines, LA; St. Bernard, LA; St. Charles, LA; Ascension, LA; East Baton Rouge, LA; Iberville, LA; Livingston, LA; Tangipahoa, LA; West Baton Rouge, LA |
| Headline | Flash Flood Warning issued May 8 at 3:20PM CDT until May 8 at 6:30PM CDT by NWS New Orleans LA |
| Expires | 2026-05-08T18:30:00-05:00 |
| SenderName | NWS New Orleans LA |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.f5b5111165574e7de780f804cf5a0ea25ef15f0e.001.1","noaa_urn:oid:2.49.0.1.840.0.c8ed6b145cb879eb52e7bb9985a0e2f5c8de5126.001.1"] |
| Iem TypeSummary | H |
| Iem Magnitude | 1.5 |
| Iem Unit | Inch |
| Iem City | New Sarpy |
| Iem County | St. Charles |
| Iem State | LA |
| Iem Wfo | LIX |
| Iem Remark | Public report of ping pong ball sized hail. Time estimated by radar. |
| Google News RssFeed | weather |
| Google News SourceName | wwltv.com |
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 10 February 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.
Calamity.live data shows a weather event with CalamityScore 43/100, near Laplace (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 191 scientific monitoring sources.