Calamity
MediumSevere WeatherCalamity Score: 34

Severe Weather near Slidell

St. TammanyUnited StatesNOAA

Right now

The most recent data we hold from NOAA arrived 8 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 15 May 2026 at 17:00 UTC. It is kept here as a record.

It is the 40th strongest of the 63 detections recorded within 20 km of this point since 12 March 2026. The last comparable one was on 9 May 2026. One more was recorded here in the fortnight before it.

What the source measured

NOAA reported: Flood Warning issued May 14 at 8:00PM CDT until May 19 at 1:00AM CDT by NWS New Orleans LA

An estimated 27,942 people live within 50 km of this point.

Nearby, since 12 March 2026

How we know

One source: NOAA. Not yet confirmed by a second, independent source.

Our own score for this event is 34 out of 100, at 81 % confidence.

The score is ours, computed from intensity, exposed population and local history — not the source’s.

Computed under scoring rules v1. Rows carrying other versions were judged by different rules and are not directly comparable.

Event Data

TypeSevere Weather
SeverityMedium
Calamity Score (ours)34 / 100
Our confidence81%
Coordinates30.3840, -89.6800
Nearest CitySlidell (15 km)
Population Exposed27.9K within 50 km
Impact Tiersignificant
Timestamp2026-05-15T01:00:00.000Z
Sourcehttps://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.c3acc3565e3382988e177e3302b9959457c5ac53.001.1

Score Breakdown

35
intensity
40
population
0
cascading
80
historical

Technical Details

EventFlood Warning
UrgencyImmediate
CertaintyObserved
AreaDescSt. Tammany, LA; Hancock, MS; Pearl River, MS
HeadlineFlood Warning issued May 14 at 8:00PM CDT until May 19 at 1:00AM CDT by NWS New Orleans LA
Expires2026-05-15T12:00:00-05:00
SenderNameNWS New Orleans LA
HasExactCoordstrue

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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