Alert archive / Texas / Flash Flood Warnings in 2021

Flash Flood Warning 63, NWS Lake Charles, LA

September 28, 20214 counties in Texas

NWS Lake Charles, LA issued this flash flood warning at Sep 28, 2021, 10:20 AM CDT for 4 counties in Texas. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Sep 28, 2021, 10:20 AM CDT (15:20 UTC)
Expired
Sep 28, 2021, 1:30 PM CDT
In force
3 hr
Issued by
NWS Lake Charles, LA
Area
Storm-based polygon
Flood severity
None

Counties Hardin County, TX, Jasper County, TX, Newton County, TX, Orange County, TX

The radar

The Lake Charles radar (KLCH), 94 km from the middle of the area, began a volume at 15:19 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

Lake Charles Mun, LA (KLCH), launched 12:00Z, 3.3 hours before the alert went out and 96 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.

Skew-T log-pSkew-T log-p diagram, Lake Charles Mun, LA at 12:00Z on 2021-09-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 922 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lake Charles Mun, LA at 12:00Z on 2021-09-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -95 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
922 J/kg
Mixed-layer CIN
-97 J/kg
Mixed-layer LCL
830 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
-95 m²/s²
0-3 km storm-relative helicity
-188 m²/s²
Significant tornado parameter
-0.3
Supercell composite
-3.3

Open this sounding in Storm Lab

The text

As transmitted.

854 
WGUS54 KLCH 281520
FFWLCH
TXC199-241-351-361-281830-
/O.NEW.KLCH.FF.W.0063.210928T1520Z-210928T1830Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Lake Charles LA
1020 AM CDT Tue Sep 28 2021

The National Weather Service in Lake Charles has issued a

* Flash Flood Warning for...
  Southeastern Hardin County in southeastern Texas...
  Southeastern Jasper County in southeastern Texas...
  Southwestern Newton County in southeastern Texas...
  Northwestern Orange County in southeastern Texas...

* Until 130 PM CDT.

* At 1020 AM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 3 and 5 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...
  Beaumont, Lumberton, Silsbee, Sour Lake, Evadale, Buna, 
  Deweyville, Bevil Oaks, Pine Forest, Lakeview, Weiss Bluff, Gist 
  and Hartburg.

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 3013 9454 3024 9449 3050 9391 3039 9389
      3040 9377 3025 9374 3017 9416 3019 9418
      3019 9421 3018 9421 3017 9424 3017 9428
      3013 9428 3010 9442

FLASH FLOOD...RADAR INDICATED

$$
2 follow-up statements
329 
WGUS74 KLCH 281640
FFSLCH

Flash Flood Statement
National Weather Service Lake Charles LA
1140 AM CDT Tue Sep 28 2021

TXC199-361-281650-
/O.CAN.KLCH.FF.W.0063.000000T0000Z-210928T1830Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Hardin TX-Orange TX-
1140 AM CDT Tue Sep 28 2021

...FLASH FLOOD WARNING IS CANCELLED FOR SOUTHEASTERN HARDIN AND 
NORTHWESTERN ORANGE COUNTIES...

Flooding is no longer expected to pose a threat. Please continue to 
heed remaining road closures.

LAT...LON 3038 9410 3050 9391 3039 9389 3040 9377
      3035 9376 3033 9377 3033 9376 3025 9374
      3024 9380 3024 9403 3028 9410 3030 9411
      3031 9410 3033 9410 3034 9410 3035 9408
      3036 9410

$$

TXC241-351-281830-
/O.CON.KLCH.FF.W.0063.000000T0000Z-210928T1830Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Jasper TX-Newton TX-
1140 AM CDT Tue Sep 28 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 130 PM CDT THIS 
AFTERNOON FOR SOUTHEASTERN JASPER AND SOUTHWESTERN NEWTON COUNTIES...

At 1140 AM CDT, Doppler radar indicated thunderstorms producing 
heavy rain across the warned area. Between 3 and 5 inches of rain 
have fallen. Additional rainfall amounts of 1 to 2 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...
  Buna, Evadale, Deweyville, Gist and Hartburg.

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 3038 9410 3050 9391 3039 9389 3040 9377
      3035 9376 3033 9377 3033 9376 3025 9374
      3024 9380 3024 9403 3028 9410 3030 9411
      3031 9410 3033 9410 3034 9410 3035 9408
      3036 9410

FLASH FLOOD...RADAR INDICATED

$$
569 
WGUS74 KLCH 281824
FFSLCH

Flash Flood Statement
National Weather Service Lake Charles LA
124 PM CDT Tue Sep 28 2021

TXC241-351-281834-
/O.EXP.KLCH.FF.W.0063.000000T0000Z-210928T1830Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Jasper TX-Newton TX-
124 PM CDT Tue Sep 28 2021

...FLASH FLOOD WARNING WILL EXPIRE AT 130 PM CDT THIS AFTERNOON FOR 
SOUTHEASTERN JASPER AND SOUTHWESTERN NEWTON COUNTIES...

The heavy rain has ended. Flooding is no longer expected to pose a 
threat. Please continue to heed remaining road closures.

LAT...LON 3038 9410 3050 9391 3039 9389 3040 9377
      3035 9376 3033 9377 3033 9376 3025 9374
      3024 9380 3024 9403 3028 9410 3030 9411
      3031 9410 3033 9410 3034 9410 3035 9408
      3036 9410

$$

The office that day

Everything else NWS Lake Charles, LA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 28, 8:41 AM CDTFlash Flood Warning Considerable damage threatLCHNewton5 hr
Sep 28, 9:15 AM CDTFlash Flood WarningLCHNewton5 hr

Nearby

Flash Flood Warnings in Texas, 2021Every flash flood warning in 2021

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.