A weak upper level system combined with a stalled frontal boundary extending over portions of southeast Louisiana and coastal Mississippi to produce a period of training thunderstorms over parts of southeast Louisiana. Very high moisture content in the atmosphere and warm air in the mid and upper levels allowed for very high rainfall rates to accompany these training thunderstorms resulting in…
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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.
A weak upper level system combined with a stalled frontal boundary extending over portions of southeast Louisiana and coastal Mississippi to produce a period of training thunderstorms over parts of southeast Louisiana. Very high moisture content in the atmosphere and warm air in the mid and upper levels allowed for very high rainfall rates to accompany these training thunderstorms resulting in flash flooding.
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 6, 1:39 PM CST, 31 minutes earlier. Its key messages:
Area Forecast Discussion
National Weather Service New Orleans LA
239 PM CDT Sat Jun 6 2026
...New SHORT TERM, LONG TERM, AVIATION, MARINE...
.KEY MESSAGES...
Updated at 148 PM CDT Sat Jun 6 2026
- A weak tropical wave will continue to bring plenty of showers
and a few storms to the area this weekend. As the wave moves
west, winds and rain chances will lower as we move into the new
week.
- As easterly to east-southeasterly winds ease, it will allow
water levels to ease as well causing coastal flood advisories to
drop. Winds will fall to around 10 to 15 knots which will keep
tide levels abnormally high today. More easing of these tide
levels is expected Sunday into the new work week.
- Abundant moisture will help lead to numerous to widespread light
to moderate showers and embedded thunderstorms through the
weekend. Areas east of I-55 and along and south of the 10/12
corridors will have the greatest risk of seeing locally heavy
rain.
&&
.SHORT TERM...
(Now through Tuesday night)
Issued at 148 PM CDT Sat Jun 6 2026
This afternoon and early evening is probably the last gasp of any
real impacts. Convection finally started to develop and spread
across the region late this morning and through midday. With
abundant moisture in place showers and any thunderstorms will be
efficient rain producers and a quick 1-2 inches of rain and as we
continue to see a few banded areas of rain we will likely run
into isolated flash flooding. Most areas through this evening will
see rain of 0.5 an inch to just under 2" while there will be
streaks of 2 to possibly as much as 6/7 inches. Convection will
continue into the evening and may persist somewhat into the
overnight hours but the more intense rain will likely start to
wane during the mid/late evening hours.
Sunday will be the last day with above normal PoPs. We will still
have abundant moisture in place and the ridge aloft will not have
quite built in yet from the eastern Gulf as the southern Plains
s/w pulls off to the north. This will lead to our northern half
and maybe more so northwestern half of the area having the best
chance for rain as subsidence starts to increase across the
southeastern 3rd of the CWA.
Heading into the new workweek ridging will build over the area.
This will help to keep PoPs down some but once again this ridge is
building in from the southeast and will be more of a dirty ridge.
Mid lvl hghts will only be around 589-591 dm and PWs will still be
ATA 2" to start Monday but some drier air may rotate around
dropping the PWs to around 1.75 by midday Tuesday. Because of
that we still have PoPs in the forecast but nothing like we have
has the last few days. /CAB/
&&
.LONG TERM...
(Wednesday through Friday night)
Issued at 148 PM CDT Sat Jun 6 2026
Extended portion of the forecast for the most part is much quieter
than the short term. Things will get a little drier and warmer as
we trend more towards a typical Summertime environment. Medium
range models overall have a fairly similar pattern through much of
the work week but they start to diverge at the end of the work
week and especially into next weekend. That said even with the
differences in the models the sensible forecast for our area is
fairly similar. With that no changes made to the extended.
Ridge dominating the Lower MS and much of the southeastern CONUS
will remain in place for another 36 to 48 hours however we will
need to watch the L/W trough moving across the northern half of
the CONUS. Right now that trough it looks like it will just surge
east. With the mid lvl jet likely having already rounded the base
of it and moving to the downstream side, its not going to want to
dig but combine the fact that there will be a ridge to the south
which will block it should keep things on the slightly drier and
warmer side through the remainder of the week and into the
weekend.
Yes There have been some hints at another wave moving into the
Gulf out of the Caribbean but models are all over the place with
it and at this time there is no indication that we have anything
to be concerned about. Lets say it again, it is Hurricane Season
and we should always be paying attention to the tropics and
staying updated/informed. However, until there is something to
worry about, do not worry or waste your time with it. /CAB/
&&
.AVIATION...
(18Z TAFS)
Issued at 148 PM CDT Sat Jun 6 2026
Convection is or will impact most if not all terminals and the
biggest impact is MVFR cigs and IFR vsbys, possibly even LIFR
vsybys with the stronger storms. Outside of convection there is
still a good chance that most terminals will have to deal with low
cigs around 2200-3k ft. Convection should slowly begin to
dissipate early this evening from southwest to northeast but some
if not most terminals may still be dealing with low cigs
especially if heavy rain occurred over any of those terminals.
MVFR cigs that do develop will likely persist well into tomorrow
morning. /CAB/
&&
.MARINE...
Issued at 148 PM CDT Sat Jun 6 2026
Winds are beginning to relax and will continue through the
remainder of the weekend and into the new workweek. Winds are still
around 15-20 knots in the open waters right now and may persist just
into the evening but these should fall off very quick with to near
10 knots before sunrise Sunday. Over the protected waters and
especially the tidal lakes winds are already down to 10-15 knots and
those will also continue to relax. Scattered showers and
thunderstorms will also be possible with the higher coverage early
in the forecast period. Winds and seas will locally be high in and
near convection. /CAB/
&&
.LIX WATCHES/WARNINGS/ADVISORIES...
LA...Coastal Flood Advisory until 10 AM CDT Sunday for LAZ058-082-084-
098.
GM...None.
MS...None.
GM...None.
&&
SHORT TERM...CAB
LONG TERM....CAB
AVIATION...CAB
MARINE...CABSpecial Weather Statement
National Weather Service New Orleans LA
142 PM CDT Sat Jun 6 2026
MSZ086-087-061915-
Southern Harrison MS-Southern Hancock MS-
142 PM CDT Sat Jun 6 2026
...A STRONG THUNDERSTORM WILL IMPACT PORTIONS OF SOUTHWESTERN
HARRISON AND SOUTHEASTERN HANCOCK COUNTIES THROUGH 215 PM CDT
...
At 142 PM CDT, Doppler radar was tracking a strong thunderstorm
capable of producing funnel clouds and waterspouts over Waveland,
moving northeast at 10 mph.
HAZARD...Waterspouts and funnel clouds and winds in excess of 40
mph.
SOURCE...Radar indicated.
IMPACT...Waterspouts can easily overturn boats and create locally
hazardous waters. If a funnel cloud briefly touches down,
minor damage to outdoor objects is possible. Gusty winds
could knock down tree limbs and blow around unsecured
objects.
Locations impacted include...
Long Beach, Bay St. Louis, Waveland, Pass Christian, Diamondhead, and
Shoreline Park.
This includes Interstate 10 in Mississippi between mile markers 13
and 24.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.
If on or near marine areas, get out of the water and move indoors or
inside a vehicle. Remember, lightning can strike out to 10 miles from
the parent thunderstorm. If you can hear thunder, you are close
enough to be struck by lightning. Move to safe shelter now! Do not be
caught on the water in a thunderstorm.
&&
LAT...LON 3028 8926 3028 8927 3029 8931 3024 8939
3026 8945 3039 8941 3041 8927 3038 8917
TIME...MOT...LOC 1842Z 204DEG 10KT 3029 8936
WATERSPOUT AND FUNNEL CLOUDS...POSSIBLE
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH
KLGPreliminary Local Storm Report
National Weather Service New Orleans LA
217 PM CDT Sat Jun 6 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0144 PM Marine Tstm Wind 6 WSW East New Orleans 30.04N 90.03W
06/06/2026 M44 MPH Orleans LA ASOS
ASOS station KNEW New Orleans Lakefront
Airport.
&&Special Weather Statement
National Weather Service New Orleans LA
217 PM CDT Sat Jun 6 2026
LAZ076-078-079-062000-
Southeast St. Tammany LA-Eastern Orleans LA-Northern St. Tammany LA-
217 PM CDT Sat Jun 6 2026
...A STRONG THUNDERSTORM WILL IMPACT PORTIONS OF NORTHEASTERN ORLEANS
AND SOUTHEASTERN ST. TAMMANY PARISHES THROUGH 300 PM CDT
...
At 216 PM CDT, Doppler radar was tracking a strong thunderstorm
capable of producing funnel clouds and waterspouts over Eden Isle,
moving northeast at 15 mph.
HAZARD...Waterspouts and funnel clouds and winds in excess of 40
mph.
SOURCE...Radar indicated.
IMPACT...Waterspouts can easily overturn boats and create locally
hazardous waters. If a funnel cloud briefly touches down,
minor damage to outdoor objects is possible. Gusty winds
could knock down tree limbs and blow around unsecured
objects.
Locations impacted include...
New Orleans, Slidell, Eden Isle, and Pearlington.
This includes Interstate 10 in Louisiana between mile markers 259 and
273.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 3031 8963 3029 8965 3028 8963 3025 8963
3024 8961 3013 8962 3012 8977 3015 8980
3017 8977 3021 8985 3025 8989 3025 8986
3027 8985 3035 8965
TIME...MOT...LOC 1916Z 237DEG 11KT 3023 8981
WATERSPOUT AND FUNNEL CLOUDS...POSSIBLE
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH
KLGPreliminary Local Storm Report
National Weather Service New Orleans LA
226 PM CDT Sat Jun 6 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0220 PM Flash Flood 2 SSW Kiln 30.39N 89.44W
06/06/2026 Hancock MS Emergency Mngr
Water over roads and road closures,
generally in northwest Hancock County.
Specific location mentioned was Jourdan
River Shores. May be a combination of heavy
rains on top of coastal flooding.
&&
DSSPreliminary Local Storm Report
National Weather Service New Orleans LA
242 PM CDT Sat Jun 6 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0146 PM Funnel Cloud 1 WSW Bay Saint Louis 30.30N 89.35W
06/06/2026 Hancock MS Public
Several public and MPING reports of a
rotating wall cloud and funnel clouds over
Bay St Louis/Waveland areas from a passing
thunderstorm. Time estimated from radar.
&&
KLGSpecial Weather Statement
National Weather Service New Orleans LA
257 PM CDT Sat Jun 6 2026
LAZ057-058-062030-
St. John The Baptist LA-St. James LA-
257 PM CDT Sat Jun 6 2026
...A STRONG THUNDERSTORM WILL IMPACT PORTIONS OF WEST CENTRAL ST.
JOHN THE BAPTIST AND NORTHEASTERN ST. JAMES PARISHES THROUGH 330 PM
CDT
...
At 257 PM CDT, Doppler radar was tracking a strong thunderstorm
capable of producing funnel clouds near Lutcher, or 9 miles west of
Reserve, moving north at 15 mph.
HAZARD...Funnel clouds and winds in excess of 40 mph.
SOURCE...Radar indicated.
IMPACT...If a funnel cloud briefly touches down, minor damage to
outdoor objects is possible. Gusty winds could knock down
tree limbs and blow around unsecured objects.
Locations impacted include...
Gramercy, Lutcher, Convent, Garyville, and Wallace.
This includes Interstate 10 in Louisiana between mile markers 192 and
197.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Conditions are favorable for the development of weak, brief funnel
clouds. This type of funnel cloud is harmless, but on rare occasions
they can briefly touch down, producing wind gusts over 50 mph. If a
funnel cloud is spotted move indoors or to safe harbor and report
your sighting to the National Weather Service.
&&
LAT...LON 3012 9086 3013 9082 3015 9063 3005 9065
2998 9088
TIME...MOT...LOC 1957Z 188DEG 11KT 3008 9071
FUNNEL CLOUDS...POSSIBLE
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH
CABThe Hammond radar (KHDC), 66 km away, was scanning. The volume nearest the first event began at 20:05 UTC.
2 flash flood. Local standard time, as filed.
Multiple reports of flash flooding along Gause Boulevard with some vehicles stalled.
Gause Boulevard continues to remain under water in some areas.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Louisiana in 2026Every state in 2026This day in weather historyWarnings in Louisiana, June 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: 1344758, 1344759.