A weak midlevel low over eastern Texas and multiple mesoscale convective vortices maintained widespread convection along the central Gulf Coast on May 25th. Deep moisture and sufficient instability supported efficient rainfall as successive storms moved north and northeast over soils saturated by repeated rainfall during the previous several days.
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 weak midlevel low over eastern Texas and multiple mesoscale convective vortices maintained widespread convection along the central Gulf Coast on May 25th. Deep moisture and sufficient instability supported efficient rainfall as successive storms moved north and northeast over soils saturated by repeated rainfall during the previous several days. Flash flooding affected portions of Hancock and Pearl River Counties from these storms.
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 25, 4:50 AM CST, 6 hours 33 minutes earlier. Its key messages:
Area Forecast Discussion...UPDATED
National Weather Service New Orleans LA
550 AM CDT Mon May 25 2026
...NEW AVIATION...
.KEY MESSAGES...
Updated at 544 AM CDT Mon May 25 2026
- Heavy rainfall continues to be possible with any stronger storms
into the start of the new workweek. A Flood Watch remains in
effect through Monday evening for portions of the area generally
south of a line from Baton Rouge to Bogalusa.
- Some storms will be capable of producing hourly rainfall rates
of 1-3" per hour. High rates, even over short periods, could
overwhelm drainage systems, leading to ponding of water in low
lying and poor drainage areas. Localized flash flooding could
also result in some roads becoming impassable, mainly in areas
where the heaviest rain falls, or where multiple storms result
in longer periods of moderate to heavy rain.
&&
.SHORT TERM...
(Now through Wednesday)
Issued at 155 AM CDT Mon May 25 2026
The stubborn upper level pattern continues to remain southerly or
southwesterly with the series of vorts continuing to move over
the region within the flow. Today will be no different. Both
globals and CAMs indicate a potentially wet day, especially east
of the I55 corridor including the MS Gulf Coast. PWATS are well
up there over 2.0" which will support efficient rainfall rates.
Went ahead and continued the FFA through this evening, but the day
shift may need to extend the headline if, indeed, the region gets
a good soaking today with additional heavy rain being a threat on
Tuesday. Speaking of Tuesday, it will remain difficult to
properly time each impulse as it moves downstream over the region,
but another wave looks to move over during peak heating with the
best potential for rainfall again east of the I55 corridor. PWATS
on Tuesday may be just a skosh lower, but still 1.75"-1.85" will
be enough for concern especially with antecedent conditions being
a bit more favorable. Finally, not to sound like a broken record,
but Wednesday the pattern is left unchanged. Again timing will be
tricky, which also makes knowing where the heaviest precip will
fall a bit tricky as well. But a continuation of localized hydro
concerns is anticipated.
As for severe weather potential, overall, the potential will be
very conditional...not zero. The main threat will be gusty winds
with precip loading evident by the highly saturated environment.
And finally temperatures will remain a touch below average through
the short term as again cloudiness, rainfall, lower
heights/thicknesses, and mesoscale boundaries will help limit
duration of heating, though if there is a break in the afternoon
hours where sun pops through the cloud cover, there will be some
decently strong and rapid surface heating. (Frye)
&&
.LONG TERM...
(Wednesday night through Sunday)
Issued at 155 AM CDT Mon May 25 2026
The latter half of the week will inherit much of the same broad,
southwesterly flow regime aloft of earlier in the weak as the upper
troughing within the subtropical jet lingers. This will continue to
enhance rainfall chances with largely summertime diurnally-driven
convective patterns setting up. The qausi-rex block regime with
ridging over southern Canada will keep upper troughing and stubborn
subtropical jet parked across the southern U.S. into the end of the
week with the only nuanced difference potentially being propagation
of the upper trough toward the SE CONUS. This would promote more
westerly to northwesterly flow that could relatively lower PWATs
from their current near-daily maximums between 1.9 to 2.1 inches.
Either way, PoPs will be a mainstay in the forecast particularly for
the afternoons each day through the forecast period. Temperatures
will be near average through the period with highs in the mid 80s
and lows in the upper 60s and lower 70s.
A tease beyond Day 7 in the global ensembles does allude that this
unsettled weather pattern could eventually break early next week
where a stronger, more textbook, rex block attempts to establish
across the north-central CONUS and strengthen east coast troughing
that could help pivot upper-level flow into a more northwesterly
orientation and promote advection of drier, continental air. We'll
see if this solution becomes more consistent in the coming days.
(TJS)
&&
.AVIATION...
(12Z TAFS)
Issued at 544 AM CDT Mon May 25 2026
Mostly VFR conditions expected during the daylight hours outside
of convection. Early morning and overnight, MVFR or lower
CIGs/VIS will be possible especially if convection develops at
night later in the period. Otherwise, surface winds will remain
light to moderate and mostly out of the south...but may be a bit
more erratic around convection. (Frye)
&&
.MARINE...
Issued at 155 AM CDT Mon May 25 2026
High pressure anchored over the western Atlantic will maintain light
to moderate onshore flow across the local coastal waters. Daily
showers and storms will be capable of producing locally hazardous
winds and seas, with a few cells each day capable of producing winds
in excess of 34 kts over the next few days. (Frye)
&&
.LIX WATCHES/WARNINGS/ADVISORIES...
LA...Flood Watch through this evening for LAZ039-046>048-056>058-064-
070-076>087-089>100.
GM...None.
MS...Flood Watch through this evening for MSZ077-083>088.
GM...None.
&&
SHORT TERM...RDF
LONG TERM....TJS
AVIATION...RDF
MARINE...RDFPreliminary Local Storm Report
National Weather Service New Orleans LA
1005 AM CDT Mon May 25 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1005 AM Flash Flood 2 W New Orleans 29.97N 90.11W
05/25/2026 Orleans LA Public
Carrollton Underpass is closed due to street
flooding according to NOLA Streetwise.
&&
JZPreliminary Local Storm Report
National Weather Service New Orleans LA
1007 AM CDT Mon May 25 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1006 AM Flash Flood 2 NE Bridge City 29.95N 90.14W
05/25/2026 Orleans LA Public
Intersection of Oak St and Eagle St flooded
according to Streetwise NOLA.
&&
JZPreliminary Local Storm Report
National Weather Service New Orleans LA
1010 AM CDT Mon May 25 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1010 AM Flash Flood 4 WSW East New Orleans 30.04N 89.99W
05/25/2026 Orleans LA Public
Intersection of Curran Blvd and Benson St
flooded according to Streetwise NOLA.
&&
JZPreliminary Local Storm Report
National Weather Service New Orleans LA
1011 AM CDT Mon May 25 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1011 AM Flash Flood 4 SW East New Orleans 30.01N 89.97W
05/25/2026 Orleans LA Public
Street flooding along Old Gentilly Rd
according to Streetwise NOLA.
&&
JZPreliminary Local Storm Report
National Weather Service New Orleans LA
1106 AM CDT Mon May 25 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1035 AM Marine Tstm Wind 77 S Venice 28.17N 89.23W
05/25/2026 M54 MPH GMZ572 LA AWOS
AWOS station KCYD Miss Canyon 807 recorded a
wind gust of 54mph or 47kt.
&&
JZPreliminary Local Storm Report
National Weather Service New Orleans LA
1121 AM CDT Mon May 25 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1055 AM Marine Tstm Wind 76 SSE Venice 28.23N 88.99W
05/25/2026 M70 MPH GMZ575 LA AWOS
AWOS station KGLX Mississippi Canyon 724
measured a peak wind gust of 70mph or 61kt.
&&
JZThe national radar mosaic for the moment the first event began.
11 flash flood, 1 flood. Local standard time, as filed.
Portions of Firetower Rd and Old Joe Moran Rd impassable due to flash flooding with barricades blocking the road.
Multiple portions of Kiln-Picayune Rd impassable with barricades blocking them per Hancock County SO.
Video of an overflowing Bayou La Terre near Kiln Delisle Rd with water just below the bridge.
Video of significant flooding of Bacon Bayou at MS Hwy 43. Water surrounding homes and businesses. Additional flooding also noted in Hickory Creek. Time estimated by radar and other reports.
Multiple sections of Rester Rd near Kiln is impassable with barricades blocking it per Hancock County SO.
Flooding reported on MS Hwy 13 and James Rd, east of Lumberton.
Flooding reported on MS Hwy 13 east of Lumberton.
Flooding reported on Springfield Road.
Reports of flooding at the intersection of Ray Ladner Rd and Barth Rd.
Flooding reported on South Valley Rd west of Poplarville.
Section of Main Street/US Hwy 11 closed in Picayune due to flooding.
Flooding reported on Washington St. in Picayune.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Mississippi in 2026Every state in 2026This day in weather historyWarnings in Mississippi, May 2026
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: 1343326, 1343325, 1343307, 1343309, 1343323, 1343317, 1343313, 1343315, 1343310, 1343321, 1343318, 1343320.