Alert archive / Texas / Flash Flood Warnings in 2026
Flash Flood Warning 50, NWS Lake Charles, LA
NWS Lake Charles, LA issued this flash flood warning at Jun 21, 2026, 5:40 AM CDT for Jefferson County, Orange County, Texas. It was in force for 6 hr. 3 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, 5:40 AM CDT (10:40 UTC)
- Expired
- Jun 21, 2026, 11:15 AM CDT
- In force
- 6 hr
- Issued by
- NWS Lake Charles, LA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Jefferson County, TX, Orange County, TX
The radar
The Lake Charles radar (KLCH), 73 km from the middle of the area, began a volume at 10:43 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 | Groves, TX | Reports of water entering homes in Groves. |
| Jun 21, 8:00 AM CDT | FLASH FLOOD | 2 Se Nederland, TX | DELAYED REPORT. Numerous photos and videos of flooding between Nederland and Port Arthur, TX. |
| Jun 21, 8:27 AM CDT | FLASH FLOOD | Groves, TX | From Jefferson County Drainage District 7, lots of streets flooding with water in homes. |
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 3 storm reports to this flash flood warning; the first came 80 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, 10.7 hours before the alert went out and 74 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.
807
WGUS54 KLCH 211040
FFWLCH
TXC245-361-211345-
/O.NEW.KLCH.FF.W.0050.260621T1040Z-260621T1345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Lake Charles LA
540 AM CDT Sun Jun 21 2026
The National Weather Service in Lake Charles has issued a
* Flash Flood Warning for...
Northeastern Jefferson County in southeastern Texas...
Southwestern Orange County in southeastern Texas...
* Until 845 AM CDT.
* At 540 AM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Up to 1 inch of rain has
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...
Beaumont, Port Arthur, Nederland, Groves, Port Neches, Central
Gardens and Southeast Texas Regional Airport.
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 2996 9384 2982 9395 3006 9413 3007 9407
2998 9387
FLASH FLOOD...RADAR INDICATED
$$
Denson2 follow-up statements
625
WGUS54 KLCH 211201
FFWLCH
TXC245-361-211445-
/O.EXT.KLCH.FF.W.0050.000000T0000Z-260621T1445Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Lake Charles LA
701 AM CDT Sun Jun 21 2026
The National Weather Service in Lake Charles has extended the
* Flash Flood Warning for...
Northeastern Jefferson County in southeastern Texas...
Southwestern Orange County in southeastern Texas...
* Until 945 AM CDT.
* At 701 AM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 2 and 5 inches of rain
have fallen. Additional rainfall amounts of 1 to 4 inches are
possible in the warned area. Flash flooding is already occurring.
HAZARD...Life threatening flash flooding. Thunderstorms
producing flash flooding.
SOURCE...Radar.
IMPACT...Life threatening flash flooding of creeks and streams,
urban areas, highways, streets and underpasses.
* Some locations that will experience flash flooding include...
Beaumont, Port Arthur, Nederland, Groves, Port Neches, Central
Gardens and Southeast Texas Regional Airport.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be aware of your surroundings and do not drive on flooded roads.
&&
LAT...LON 2996 9384 2982 9395 3006 9413 3007 9407
2998 9387
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
Denson682
WGUS54 KLCH 211429
FFWLCH
TXC245-361-211615-
/O.EXT.KLCH.FF.W.0050.000000T0000Z-260621T1615Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Lake Charles LA
929 AM CDT Sun Jun 21 2026
The National Weather Service in Lake Charles has extended the
* Flash Flood Warning for...
Northeastern Jefferson County in southeastern Texas...
Southwestern Orange County in southeastern Texas...
* Until 1115 AM CDT.
* At 929 AM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 2 and 9 inches of rain
have fallen. Additional rainfall amounts up to 2 inches are
possible in the warned area. Flash flooding is already occurring.
HAZARD...Life threatening flash flooding. Thunderstorms
producing flash flooding.
SOURCE...Radar.
IMPACT...Life threatening flash flooding of creeks and streams,
urban areas, highways, streets and underpasses.
* Some locations that will experience flash flooding include...
Beaumont, Port Arthur, Nederland, Groves, Port Neches, Central
Gardens and Southeast Texas Regional Airport.
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 2996 9384 2982 9395 3006 9413 3007 9407
2998 9387
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
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, 5 hours 2 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, 5 hours 2 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, 6:53 AM CDT | Flash Flood Warning | LCH | Jefferson, Orange | 5 hr |
| Jun 21, 11:07 AM CDT | Areal Flood Warning | LCH | Jefferson, Orange | 5 hr |
Nearby
Flash Flood Warnings in Texas, 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.