Alert archive / Louisiana / Flash Flood Warnings in 2026
Flash Flood Warning 49, NWS Lake Charles, LA
NWS Lake Charles, LA issued this flash flood warning at Jun 21, 2026, 5:29 AM CDT for Lafayette Parish, Saint Martin Parish, Louisiana. It was in force for 6 hr. 4 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jun 21, 2026, 5:29 AM CDT (10:29 UTC)
- Expired
- Jun 21, 2026, 11:30 AM CDT
- In force
- 6 hr
- Issued by
- NWS Lake Charles, LA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Lafayette Parish, LA, Saint Martin Parish, LA
The radar
The Lake Charles radar (KLCH), 125 km from the middle of the area, began a volume at 10:29 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 21, 7:00 AM CDT | FLASH FLOOD | 1 Ene Breaux Bridge, LA | Report of water entering St. Martin Hospital in Breaux Bridge. |
| Jun 21, 7:40 AM CDT | FLASH FLOOD | 2 Se Cecilia, LA | Stalled vehicles and high water/impassable road ways being reported around St. Martin Parish. |
| Jun 21, 7:55 AM CDT | FLASH FLOOD | 2 E Lafayette, LA | DELAYED REPORT. Stream gauge at Surrey Street reports the Vermilion River rapidly rose 3 feet into Minor flood. |
| Jun 21, 9:23 AM CDT | FLASH FLOOD | Breaux Bridge, LA | Grand Pointe Avenue completely flooded. Road closed at HWY 347. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
Did it verify
Verified. The Iowa Environmental Mesonet's Cow matched 4 storm reports to this flash flood warning; the first came 91 minutes after it went out.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
The nearest sounding before it
Lake Charles Mun, LA (KLCH), launched 00:00Z, 10.5 hours before the alert went out and 124 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
- 2175 J/kg
- Mixed-layer CIN
- -6 J/kg
- Mixed-layer LCL
- 831 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 41 m²/s²
- 0-3 km storm-relative helicity
- 49 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.3
The text
As transmitted.
648
WGUS54 KLCH 211029
FFWLCH
LAC055-099-211330-
/O.NEW.KLCH.FF.W.0049.260621T1029Z-260621T1330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Lake Charles LA
529 AM CDT Sun Jun 21 2026
The National Weather Service in Lake Charles has issued a
* Flash Flood Warning for...
Eastern Lafayette Parish in south central Louisiana...
Northwestern St. Martin Parish in south central Louisiana...
* Until 830 AM CDT.
* At 529 AM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 1 and 2 inches of rain
have fallen. Additional rainfall amounts of 1 to 3 inches are
possible in the warned area. Flash flooding is ongoing or expected
to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flash flooding of small creeks and streams, urban
areas, highways, streets and underpasses as well as
other poor drainage and low-lying areas.
* Some locations that will experience flash flooding include...
Lafayette, Scott, Breaux Bridge, Carencro, Arnaudville, Broussard,
Youngsville, Henderson, Cecilia and Parks.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be aware of your surroundings and do not drive on flooded roads.
&&
LAT...LON 3039 9198 3041 9197 3040 9194 3041 9189
3041 9183 3040 9182 3020 9175 3009 9198
3021 9214 3037 9200 3037 9199
FLASH FLOOD...RADAR INDICATED
$$
Denson2 follow-up statements
681
WGUS54 KLCH 211211
FFWLCH
LAC055-099-211430-
/O.EXT.KLCH.FF.W.0049.000000T0000Z-260621T1430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Lake Charles LA
711 AM CDT Sun Jun 21 2026
The National Weather Service in Lake Charles has extended the
* Flash Flood Warning for...
Eastern Lafayette Parish in south central Louisiana...
Northwestern St. Martin Parish in south central Louisiana...
* Until 930 AM CDT.
* At 711 AM CDT, the public reported thunderstorms producing heavy
rain across the warned area. Between 2 and 5 inches of rain have
fallen. Additional rainfall amounts of 1 to 2 inches are possible
in the warned area. Flash flooding is already occurring.
HAZARD...Life threatening flash flooding. Thunderstorms
producing flash flooding.
SOURCE...Public reported.
IMPACT...Life threatening flash flooding of creeks and streams,
urban areas, highways, streets and underpasses.
* Some locations that will experience flash flooding include...
Lafayette, Scott, Breaux Bridge, Carencro, Arnaudville, Broussard,
Youngsville, Henderson, Cecilia and Parks.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be aware of your surroundings and do not drive on flooded roads.
&&
LAT...LON 3039 9198 3041 9197 3040 9194 3041 9189
3041 9183 3040 9182 3020 9175 3009 9198
3021 9214 3037 9200 3037 9199
FLASH FLOOD...OBSERVED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
Denson744
WGUS54 KLCH 211410
FFWLCH
LAC055-099-211630-
/O.EXT.KLCH.FF.W.0049.000000T0000Z-260621T1630Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Lake Charles LA
910 AM CDT Sun Jun 21 2026
The National Weather Service in Lake Charles has extended the
* Flash Flood Warning for...
Eastern Lafayette Parish in south central Louisiana...
Northwestern St. Martin Parish in south central Louisiana...
* Until 1130 AM CDT.
* At 910 AM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 2 and 6 inches of rain
have fallen. Additional rainfall amounts of around 1 inch are
possible in the warned area. Flash flooding is already occurring.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flash flooding of small creeks and streams, urban
areas, highways, streets and underpasses as well as
other poor drainage and low-lying areas.
* Some locations that will experience flash flooding include...
Lafayette, Scott, Breaux Bridge, Carencro, Arnaudville, Broussard,
Youngsville, Henderson, Cecilia and Parks.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be aware of your surroundings and do not drive on flooded roads.
&&
LAT...LON 3039 9198 3041 9197 3040 9194 3041 9189
3041 9183 3040 9182 3020 9175 3009 9198
3021 9214 3037 9200 3037 9199
FLASH FLOOD...RADAR INDICATED
$$
TinglerWhat forecasters said that day
The local office's own words before this flash flood 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 flash flood warning went out at Jun 21, 12:38 AM CDT, 4 hours 51 minutes earlier. Its key messages:
- Slight Risk (level 2 of 4) for flash flooding for lower Southeast Texas and far Southwest Louisiana and a Marginal Risk (level 1 of 4) for most of the area through the early afternoon.
- Rain chances will start to decrease this evening and will range from 0 to 20 percent the week ahead.
- Temperatures will start to increase this week with highs in the low to mid 90s.
Area forecast discussion, Jun 21, 12:38 AM CDT, 4 hours 51 minutes before
Area Forecast Discussion National Weather Service Lake Charles LA 1238 AM CDT Sun Jun 21 2026 ...New DISCUSSION, AVIATION, MARINE, FIRE WEATHER... .KEY MESSAGES... - Slight Risk (level 2 of 4) for flash flooding for lower Southeast Texas and far Southwest Louisiana and a Marginal Risk (level 1 of 4) for most of the area through the early afternoon. - Rain chances will start to decrease this evening and will range from 0 to 20 percent the week ahead. - Temperatures will start to increase this week with highs in the low to mid 90s. && .DISCUSSION... (Today through Saturday) Issued at 1226 AM CDT Sun Jun 21 2026 A stream of Gulf fed moisture filters across across Southeast TX and Southwest LA today. The coastal trough driving daily convective showers and storms is showing signs of diminishing toward the east. After a brief morning round of scattered activity, warming in the lowest 1km AGL will create a cap decreasing the potential for further convection. Highs will top out in the low 90s for most locations while retaining that muggy high humidity. The column begins to dry out further on Monday locally and likely warm enough to inhibit convection under some weak subsidence. Resulting less cloud cover will hedge high temperatures higher in the lower 90s. Messaging will be pivoting away from flood concerns, thankfully, to seasonal heat hazards or cautioning at the least. Given the amount of antecedent rainfall, surfaces will likely carry high RH during the afternoons amid the upcoming work week. This will border many interior locations near heat advisory criteria so outdoor activities should be padded with rest, cooling off, and hydration. We continue the warm / relatively drier pattern Tuesday where mid 90s are likely across central Louisiana and interior Southeast Texas. Winds out of the south will acquire more southwest components as surface high pressure moving across the SECONUS and broadening over the central Gulf waters. These hot and dry conditions with light southerly winds will stay in the forecast through Friday night. Some of the guidance hints at an upper level trough developing by the weekend, but this solution is weak and not well represented in blended guidance or ensembles. That said, outside of a quick seabreeze or garden variety pop up, rain chances stay around 10% or less for the extended range. Kowalski / 30 && .AVIATION... (06Z TAFS) Issued at 1226 AM CDT Sun Jun 21 2026 Given the amount of surface moisture, and high dewpoints areas of MVFR conditions will persist overnight while scattered SHRA and TS attempt to develop along the coast moving north as scattered clusters. Winds outside of convection will maintain southeast components through daybreak. Scattered TS possible after sunrise, but chances decrease through late morning and afternoon and drier air begins to infiltrate the column. 30 && .MARINE... Issued at 1226 AM CDT Sun Jun 21 2026 The pressure gradient will gradually tighten into Sunday night which is increase winds. Sunday night into Monday there could be a brief period where winds reach SCA criteria over a portion of the gulf waters. Winds will decrease again by Tuesday with a light to moderate onshore flow anticipated through the remainder of the week. && .FIRE WEATHER... Issued at 1226 AM CDT Sun Jun 21 2026 No fire weather concerns through the period. That said, with respect to rainfall, the pattern is showing signs of a much drier forecast this coming week with chances of rain under 15% through Friday. && .LCH WATCHES/WARNINGS/ADVISORIES... LA...None. TX...None. GM...None. && PUBLIC/FIRE/MARINE...30 AVIATION...30
The office that day
Everything else NWS Lake Charles, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 21, 7:39 AM CDT | Special Weather Statement | LCH | Evangeline | 36 min |
| Jun 21, 7:57 AM CDT | Flash Flood Warning | LCH | Acadia, Allen, Evangeline, Jefferson Davis | 3 hr |
| Jun 21, 8:17 AM CDT | River Flood Warning | LCH | Lafayette, Vermilion | 29 hr |
| Jun 21, 10:51 AM CDT | Areal Flood Warning | LCH | Acadia, Allen, Evangeline, Jefferson Davis | 3 hr |
Nearby
Flash Flood Warnings in Louisiana, 2026Every flash flood 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.