Alert archive / Louisiana / Severe Thunderstorm Warnings in 2026
Severe Thunderstorm Warning 64, NWS Lake Charles, LA
NWS Lake Charles, LA issued this severe thunderstorm warning at Jun 18, 2026, 11:54 AM CDT for Avoyelles Parish, Louisiana. It was in force for 66 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jun 18, 2026, 11:54 AM CDT (16:54 UTC)
- Expired
- Jun 18, 2026, 1:00 PM CDT
- In force
- 66 min
- Issued by
- NWS Lake Charles, LA
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 0.75 in
- Wind
- 60.0 mph
County Avoyelles Parish, LA
The radar
The Ft Polk radar (KPOE), 93 km from the middle of the area, began a volume at 16:56 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Jackson, MS (KJAN), launched 12:00Z, 4.9 hours before the alert went out and 228 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 245 J/kg
- Mixed-layer CIN
- -36 J/kg
- Mixed-layer LCL
- 617 m above ground
- 0-6 km bulk shear
- 141 kt
- 0-1 km storm-relative helicity
- -954 m²/s²
- 0-3 km storm-relative helicity
- 54 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -0.3
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Lake Charles, LA wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 18, 12:09 AM CDT, 11 hours 45 minutes earlier. Its key messages:
- Tropical Storm Warnings have been cancelled as Tropical Storm Arthur has dissipated.
- A Flood Watch remains in effect for all of Southwest Louisiana through Thursday evening.
- A Coastal Flood advisory is in effect until Thursday afternoon. Surges of up to 2 feet are expected.
Area forecast discussion, Jun 18, 12:09 AM CDT, 11 hours 45 minutes before
Area Forecast Discussion
National Weather Service Lake Charles LA
1209 AM CDT Thu Jun 18 2026
...New DISCUSSION, AVIATION, MARINE, FIRE WEATHER...
.KEY MESSAGES...
- Tropical Storm Warnings have been cancelled as Tropical Storm
Arthur has dissipated.
- A Flood Watch remains in effect for all of Southwest Louisiana
through Thursday evening.
- A Coastal Flood advisory is in effect until Thursday afternoon.
Surges of up to 2 feet are expected.
&&
.DISCUSSION...
(Today through Wednesday)
Issued at 1206 AM CDT Thu Jun 18 2026
The remnants of post-Tropical Storm Arthur are now onshore near
Galveston and are not expected to re-enter the Gulf. While further
strengthening is not a concern, we are looking at another round
of heavy rain and gusty winds overnight and into Thursday morning.
Flash flooding remains a major concern, with an additional 2 to 6
inches of rain possible across Acadiana and southwest Louisiana
tonight. Along with the heavy rain, there is also an isolated
tornado threat as backing low-level flow will enhance 0-1 km
shear, with models showing elongated low-level hodographs.
Local impacts will start to diminish on Thursday morning, with the
coastal flood advisory being downgraded as surge levels reach
roughly one to two feet above MHHW. In addition, we will be paring
back the flood watch a little early, at least for parts of
southeast Texas and central Louisiana. As Arthur continues to move
further inland, subsidence will increase, leading to less cloud
cover and an increase in temperatures, with highs in the 90s. With
the remnants of Arthur still in east Texas, tropical moisture will
cause dew points to be near 80. This combination will spike the
apparent temperature well into the triple digits, and a heat
advisory will be in effect for southeast Texas. For the rest of
the week and heading into the weekend, we are looking at a more
typical summertime pattern with temperatures in the mid-90s and
high dew points. More heat advisories may be needed through the
weekend. Over the weekend, ridging will start to build over the
region, keeping rain chances below 20% for most of the area. The
break from the rain will be much appreciated, as QPF amounts from
Friday to next Wednesday are around 0.10 inches.
&&
.AVIATION...
(06Z TAFS)
Issued at 1206 AM CDT Thu Jun 18 2026
Heavy rain and thunderstorms are impacting LFT and ARA. Near
convection conditions will be IFR/LIFR with heavy rain and low
ceilings. Elsewhere conditions will be MVFR with low clouds. Winds
will be from the south-southeast around 10 to 15 knots.
&&
.MARINE...
Issued at 1206 AM CDT Thu Jun 18 2026
The remnants of post-Tropical Storm Arthur are now located inland
over Texas, and all Tropical Storm warnings have been cancelled.
Strong squalls will continue. Conditions offshore remain
dangerous, as sustained winds are between 15 and 25 knots with
wave heights up to 10 feet. Conditions will start to improve on
Thursday, with winds dropping below 20 knots Thursday night. Wave
heights will take a bit longer to subside, staying above 6 feet
well into Friday. Over the weekend and into the start of next
week, conditions will be calmer, with prevailing winds around 10
to 15 knots from the south and waves below 5 feet.
&&
.FIRE WEATHER...
Issued at 1206 AM CDT Thu Jun 18 2026
Multiple rounds of heavy rain will limit any fire weather concerns
for the next several days. MinRH values will remain above 50% for
the rest of the forecast period.
&&
.LCH WATCHES/WARNINGS/ADVISORIES...
LA...Flood Watch through this evening for LAZ027>033-044-045-055-073-
074-141>143-152>154-241>243-252>254.
Wind Advisory until 8 PM CDT this evening for LAZ027>033-044-045-
055-073-074-141>143-152>154-241>243-252>254.
Coastal Flood Advisory until noon CDT today for LAZ073-074-241-
252>254.
TX...Wind Advisory until 8 PM CDT this evening for TXZ180-201-259>262-
515-516-615-616.
Coastal Flood Advisory until noon CDT today for TXZ615-616.
Heat Advisory from 10 AM this morning to 9 PM CDT this evening
for TXZ180-201-259>262-515-516-615-616.
GM...Small Craft Advisory until 7 AM CDT Friday for GMZ430-432-435-
436-450-452-455-470-472-475.
&&
PUBLIC/FIRE/MARINE...14
AVIATION...14In the hours before
Local storm report, Jun 18, 8:13 AM CDT, 3 hours 41 minutes before
Preliminary Local Storm Report
National Weather Service Lake Charles LA
813 AM CDT Thu Jun 18 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0809 AM Flash Flood 7 W Big Cane 30.81N 92.13W
06/18/2026 St. Landry LA Broadcast Media
Floodwaters covering WPA Rd near Dubuisson.
&&
TPSLocal storm report, Jun 18, 8:30 AM CDT, 3 hours 24 minutes before
Preliminary Local Storm Report
National Weather Service Lake Charles LA
830 AM CDT Thu Jun 18 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0809 AM Flash Flood 5 W Big Cane 30.83N 92.09W
06/18/2026 St. Landry LA Broadcast Media
Corrects previous flash flood report from 7
W Big Cane. Floodwaters covering WPA Rd at
intersection of US 71 and Peter Smith Rd
near Morrow.
&&
TPSLocal storm report, Jun 18, 8:54 AM CDT, 3 hours before
Preliminary Local Storm Report
National Weather Service Lake Charles LA
854 AM CDT Thu Jun 18 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0853 AM Flash Flood Cottonport 30.98N 92.05W
06/18/2026 Avoyelles LA Law Enforcement
Report of a water rescue in Cottonport.
&&
TPSLocal storm report, Jun 18, 9:12 AM CDT, 2 hours 42 minutes before
Preliminary Local Storm Report
National Weather Service Lake Charles LA
912 AM CDT Thu Jun 18 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0826 AM Flash Flood Simmesport 30.98N 91.81W
06/18/2026 Avoyelles LA Public
Multiple social media reports of flooded
roads in Simmesport.
&&
TPSLocal storm report, Jun 18, 10:22 AM CDT, 1 hour 32 minutes before
Preliminary Local Storm Report
National Weather Service Lake Charles LA
1022 AM CDT Thu Jun 18 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1021 AM Flash Flood 1 WSW Mansura 31.05N 92.06W
06/18/2026 Avoyelles LA Law Enforcement
Law enforcement reports LA 114 closed due to
high water between Mansura and Hessmer.
&&
TPSLocal storm report, Jun 18, 11:30 AM CDT, 24 minutes before
Preliminary Local Storm Report
National Weather Service Lake Charles LA
1130 AM CDT Thu Jun 18 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1130 AM Flash Flood Hessmer 31.06N 92.12W
06/18/2026 Avoyelles LA NWS Employee
Water entering multiple homes in Hessmer.
&&
TPSThe office that day
Everything else NWS Lake Charles, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 17, 9:29 PM CDT | Special Marine Warning | LCH | 61 min | |
| Jun 17, 10:04 PM CDT | Special Marine Warning | LCH | 56 min | |
| Jun 17, 10:05 PM CDT | Small Craft Advisory | LCH | 33 hr | |
| Jun 17, 10:06 PM CDT | Coastal Flood Advisory | LCH | Calcasieu, Cameron, Iberia, St. Mary, Vermilion | 14 hr |
| Jun 17, 11:01 PM CDT | Special Marine Warning | LCH | 59 min | |
| Jun 17, 11:03 PM CDT | Special Marine Warning | LCH | 57 min | |
| Jun 18, 12:01 AM CDT | Special Marine Warning | LCH | 59 min | |
| Jun 18, 12:03 AM CDT | Special Marine Warning | LCH | 57 min | |
| Jun 18, 12:05 AM CDT | Special Marine Warning | LCH | 55 min | |
| Jun 18, 12:53 AM CDT | Special Marine Warning | LCH | 52 min | |
| Jun 18, 12:55 AM CDT | Special Marine Warning | LCH | 65 min | |
| Jun 18, 1:37 AM CDT | Areal Flood Warning | LCH | Evangeline, Saint Landry | 24 hr |
| Jun 18, 2:17 AM CDT | Tornado Warning | LCH | Saint Martin, St. Mary | 15 min |
| Jun 18, 5:30 AM CDT | Flash Flood Warning | LCH | Avoyelles, Evangeline, Saint Landry | 5 hr |
| Jun 18, 6:36 AM CDT | Flash Flood Warning | LCH | Avoyelles | 3 hr |
| Jun 18, 7:30 AM CDT | Flash Flood Warning | LCH | Avoyelles | 3 hr |
| Jun 18, 7:57 AM CDT | Flash Flood Warning | LCH | Avoyelles, Evangeline, Rapides | 2 hr |
| Jun 18, 8:59 AM CDT | Flash Flood Warning | LCH | Avoyelles | 4 hr |
| Jun 18, 9:44 AM CDT | Flash Flood Warning | LCH | Avoyelles, Evangeline, Rapides, Saint Landry | 3 hr |
| Jun 18, 9:53 AM CDT | Severe Thunderstorm Warning | LCH | Avoyelles | 67 min |
| Jun 18, 9:57 AM CDT | Tornado Warning | LCH | Avoyelles | 18 min |
| Jun 18, 10:51 AM CDT | Areal Flood Warning | LCH | Saint Landry | 6 hr |
| Jun 18, 10:54 AM CDT | Severe Thunderstorm Warning | LCH | Avoyelles | 66 min |
| Jun 18, 11:29 AM CDT | Heat Advisory | LCH | Acadia, Allen, Avoyelles, Beauregard, Calcasieu, Cameron and 10 more | 32 hr |
| Jun 18, 11:31 AM CDT | Tornado Warning | LCH | Avoyelles | 29 min |
| Jun 18, 12:44 PM CDT | Flash Flood Warning | LCH | Avoyelles | 4 hr |
| Jun 18, 12:47 PM CDT | Flash Flood Warning | LCH | Avoyelles, Evangeline, Rapides, Saint Landry | 4 hr |
| Jun 18, 4:57 PM CDT | Areal Flood Warning | LCH | Avoyelles | 47 hr |
| Jun 17, 10:15 PM CDT | Heat Advisory | LCH | Hardin, Jasper, Jefferson, Newton, Orange, Tyler | 22 hr |
Nearby
Severe Thunderstorm Warnings in Louisiana, 2026Every severe thunderstorm warning in 2026
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.