A deep upper level trough over the southwest US was very slowly moving east on May 6th. At the same time, a ridge of high pressure was centered over Central America.
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 deep upper level trough over the southwest US was very slowly moving east on May 6th. At the same time, a ridge of high pressure was centered over Central America. This creased a split flow pattern between those 2 features which increases buoyancy. As a previously stalled boundary in the northern Gulf lifted north as a warm front. High instability created by this environment supported multiple storms with large hail.
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 May 6, 2:44 AM CST, 10 hours earlier.
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</html>The Hammond radar (KHDC), 98 km away, was scanning. The volume nearest the first event began at 18:43 UTC.
10 hail. Local standard time, as filed.
Iberville Parish Office of Homeland Security and Emergency Preparedness relayed multiple reports of quarter sized hail in Bayou Sorrel.
Broadcast media reported quarter sized hail in Lexington Estates in Baton Rouge.
A comment on a social media post showed quarter sized hail south of Walker.
Near ping pong ball sized hail fell near the city of Livingston.
Public reported quarter size hail near Walker.
Quarter size hail reported by public north of Livingston.
A trained spotter reported silver dollar sized hail.
A picture on social media showed at least half dollar sized hail.
A comment on a social media post showed 1 inch hail in Pumpkin Center.
Quarter sized hail reported in Ponchatoula.
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, May 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: 1259416, 1259417, 1259418, 1259419, 1259420, 1259421, 1259422, 1259423, 1259424, 1259425.