A mesoscale convective system developed in the morning across southeast Louisiana as a weak upper level system passed overhead. A deep cold pool aided in a quick progression east across the area but back building of convection overwhelmed drainage systems in New Orleans.
Every event with a place to put it. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS LIX wrote it up.
A mesoscale convective system developed in the morning across southeast Louisiana as a weak upper level system passed overhead. A deep cold pool aided in a quick progression east across the area but back building of convection overwhelmed drainage systems in New Orleans.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS New Orleans, LA wrote its last area forecast discussion before the first event at Jun 12, 5:24 PM CST, 17 hours 31 minutes earlier.
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</html>The Hammond radar (KHDC), 68 km away, was scanning. The volume nearest the first event began at 16:54 UTC.
1 flash flood. Local standard time, as filed.
Report of street flooding at the Canal St underpass and Broad Street from heavy thunderstorms.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Louisiana in 2025Every state in 2025This day in weather historyWarnings in Louisiana, June 2025
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-10-01. Each event’s entry at NCEI: 1278338.