Calamity
MediumSevere WeatherCalamity Score: 34

Severe Weather in United States

St. MartinUnited StatesNOAA

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.

Nothing else has been detected within 20 km in the last 24 hours.

This alert expired on 9 May 2026 at 19:15 UTC. It is kept here as a record.

No stronger detection stands among the 10 recorded within 20 km of this point since 9 May 2026 — 5 others scored the same.

What the source measured

NOAA reported: Flash Flood Warning issued May 9 at 11:49AM CDT until May 9 at 2:15PM CDT by NWS New Orleans LA

An estimated 30,754 people live within 50 km of this point.

Nearby, since 9 May 2026

How we know

Confirmed by 5 independent sources, including NOAA.

Our own score for this event is 34 out of 100, at 91 % 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 confidence91%
Coordinates29.9348, -91.3741
Nearest CityNew Iberia (44 km)
Population Exposed30.8K within 50 km
Impact Tiersignificant
Timestamp2026-05-09T16:49:00.000Z
Sourcehttps://api.weather.gov/alerts/merged_Flash Flood Warning_noaa_urn:oid:2.49.0.1.840.0.7633487e48ddeaef588c52af00083ef7

Score Breakdown

35
intensity
40
population
0
cascading
80
historical

Technical Details

EventFlash Flood Warning
UrgencyImmediate
CertaintyLikely
AreaDescJefferson, LA; Orleans, LA; Iberia, LA; St. Martin, LA; St. Mary, LA; Vermilion, LA; Iberia, LA; Lafayette, LA; St. Martin, LA; Vermilion, LA
HeadlineFlash Flood Warning issued May 9 at 11:49AM CDT until May 9 at 2:15PM CDT by NWS New Orleans LA
Expires2026-05-09T14:15:00-05:00
SenderNameNWS New Orleans LA
HasExactCoordstrue
MergedCount3
MergedIds["noaa_urn:oid:2.49.0.1.840.0.7633487e48ddeaef588c52af00083ef7f927d1d5.001.1","noaa_urn:oid:2.49.0.1.840.0.cfb2f1af42b92eaa9a5737a6c041bf80ef5f529f.001.1","noaa_urn:oid:2.49.0.1.840.0.b761dc6e1877c1c62fa84fe8a3cf0569e12c9107.001.1"]
Iem TypeSummaryF
Iem City3 W New Iberia
Iem CountyIberia
Iem StateLA
Iem WfoLCH
Iem RemarkReport Grand Prairie Rd is blocked by high water.
MergedSources[{"id":"iem_F_30.390_-91.160_1778338800000","source":"iem","severity":"low","severityValue":25,"timestamp":1778338800000,"latitude":30.39,"longitude":-91.16},{"id":"iem_F_29.950_-91.770_1778340240000","source":"iem","severity":"low","severityValue":25,"timestamp":1778340240000,"latitude":29.95,"longitude":-91.77},{"id":"iem_F_30.020_-91.830_1778342460000","source":"iem","severity":"low","severityValue":25,"timestamp":1778342460000,"latitude":30.02,"longitude":-91.83},{"id":"iem_F_30.000_-91.870_1778340240000","source":"iem","severity":"low","severityValue":25,"timestamp":1778340240000,"latitude":30,"longitude":-91.87}]

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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