Thunderstorms developed over southeast Louisiana on July 10, 2025, producing frequent lightning. The St.
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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.
Thunderstorms developed over southeast Louisiana on July 10, 2025, producing frequent lightning. The St. George Fire Department responded to a two-story apartment fire in the 10700 block of Industriplex Boulevard in Baton Rouge, which investigators determined was caused by a lightning strike.
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 Jul 10, 11:43 AM CST, 2 hours 6 minutes earlier.
Area Forecast Discussion National Weather Service New Orleans LA 1243 PM CDT Thu Jul 10 2025 ...New SHORT TERM, LONG TERM, AVIATION, MARINE... .SHORT TERM... (This afternoon through Friday night) Issued at 1043 AM CDT Thu Jul 10 2025 Not much to say that hasn't already been said over the last few days... Typical summertime weather will persist as the local area remains situated between two upper level highs and under the influence of weak troughing aloft. Diurnally forced showers and storms are already affecting portions of the area and scattered to locally numerous showers and storms will continue through the afternoon hours, diminishing during the early evening as we lose daytime heating. Tomorrow should see a near repeat, but with potential for slightly less coverage as the troughing aloft begins to flatten. Temperatures will be near to slightly above normal with afternoon highs in the low to mid 90s and morning lows in the mid to upper 70s. && .LONG TERM... (Saturday through Wednesday) Issued at 1043 AM CDT Thu Jul 10 2025 Going into the weekend, we'll start to see a pattern shift as the main upper trough lifts northeastward and high pressure currently over the western Atlantic builds westward toward the lower Mississippi Valley. This will lead to a decrease in daily convective coverage and an associated increased in afternoon temperatures and heat index values. Taking a deeper dive into the data, despite the high building into the local area, we remain mostly on the periphery, so subsidence aloft doesn't appear strong enough at this time to completely shut off diurnal convection. With onshore flow continuing to pump Gulf moisture into the area, precipitable water values look to remain near or even slightly above normal for this time of year. That being said, we should still see some scattered afternoon showers and storms. However, in areas that do not receive the benefit of rain-cooled outflow, temperatures will be able to rise into the mid to upper 90s. These temperatures combined with dewpoints in the mid or even upper 70s will make for at least localized oppressive conditions. The current forecast indicates heat index values will reach heat advisory criteria (heat index of 108 degrees or higher) in some areas by Sunday or Monday, with at least some potential for values near heat warning criteria (heat index of 113 degrees or higher) Tuesday and Wednesday. This is all dependent on exactly where and when showers and storms develop across the region. NBM seems to have a continued high bias in the forecast POPs during the latter part of the forecast period. As mentioned above, we should see at least some decrease in afternoon showers and storms as the high builds in, so have adjusted the pops down 10-20% in some areas mainly in the Tues/Wed time frame to cap them around 50%. Messaging wise it's not a huge difference, but it does take the coverage down from numerous to scattered. Further downward adjustments may still be needed given that even 50% is near or above the 90th percentile members in the ECMWF ensemble guidance, but at least wanted to start showing a possible trend. && .AVIATION... (18Z TAFS) Issued at 1043 AM CDT Thu Jul 10 2025 Outside of convection, VFR conditions will prevail through the period. Today and tomorrow should continue to see a typical summertime pattern with scattered to locally numerous showers and storms mainly during the afternoon hours, calling for PROB30 or TEMPO groups at all terminals. Convection should wane around 00z, with benign conditions overnight. && .MARINE... Issued at 1043 AM CDT Thu Jul 10 2025 Marine conditions will be benign through the period outside of any localized impacts from convection. In response to a broad ridge over the Gulf, winds will generally be out of the south/southwest at 10 kts or less aside from areas near the immediate coastline where sea/lake/land breeze cycles will have an influence on both direction and speed. Otherwise, a fairly typical summertime convective pattern will persist with showers and storms developing during the late night, peaking during the morning hours, and diminishing through the afternoon and evening. && .PRELIMINARY POINT TEMPS/POPS... MCB 71 91 72 93 / 20 80 40 50 BTR 75 92 74 93 / 20 80 40 60 ASD 74 92 74 93 / 20 80 50 50 MSY 77 92 78 94 / 20 80 40 60 GPT 75 91 76 92 / 40 80 50 50 PQL 74 91 74 92 / 40 80 50 50 && .LIX WATCHES/WARNINGS/ADVISORIES... LA...None. GM...None. MS...None. GM...None. && SHORT TERM...DM LONG TERM....DM AVIATION...DM MARINE...DM
The Hammond radar (KHDC), 65 km away, was scanning. The volume nearest the first event began at 19:49 UTC.
1 lightning. Local standard time, as filed.
St. George Fire Department responded to a structure fire of a 2 story apartment in the 10700 block of Industriplex Boulevard. SGFD investigators responded to the scene and concluded that the fire was caused by a lightning strike.
After NWS Directive 10-1605, the rules offices file Storm Data by.
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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 2026-09-24. Each event’s entry at NCEI: 1286879.