Alert archive / Texas / Flash Flood Warnings in 2023

Flash Flood Warning 21, NWS Lake Charles, LA

May 10, 2023Jefferson County, Orange County, Texas

NWS Lake Charles, LA issued this flash flood warning at May 10, 2023, 11:03 AM CDT for Jefferson County, Orange County, Texas. It was in force for 117 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: May 10, 2023, 11:03 AM CDT (16:03 UTC)
Expired: May 10, 2023, 1:00 PM CDT
In force: 117 min
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), 74 km from the middle of the area, began a volume at 16:05 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, 4.1 hours before the alert went out and 76 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 326 J/kg
Mixed-layer CIN: -101 J/kg
Mixed-layer LCL: 1029 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 51 m²/s²
0-3 km storm-relative helicity: 127 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.9

Open this sounding in Storm Lab

The text

As transmitted.

571 
WGUS54 KLCH 101603
FFWLCH
TXC245-361-101800-
/O.NEW.KLCH.FF.W.0021.230510T1603Z-230510T1800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Lake Charles LA
1103 AM CDT Wed May 10 2023

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 100 PM CDT.

* At 1103 AM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 1 and 3 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...
  Beaumont, Port Arthur, Nederland, Groves, Port Neches, Vidor, 
  Central Gardens, Rose City, Southeast Texas Regional Airport and 
  Port Acres.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

&&

LAT...LON 2998 9387 2979 9398 3010 9415 3016 9402
      3014 9399 3003 9397

FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL RATE...1-2 INCHES IN 2 HOURS

$$

24

1 follow-up statement

519 
WGUS74 KLCH 101756
FFSLCH

Flash Flood Statement
National Weather Service Lake Charles LA
1256 PM CDT Wed May 10 2023

TXC245-361-101806-
/O.EXP.KLCH.FF.W.0021.000000T0000Z-230510T1800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Jefferson TX-Orange TX-
1256 PM CDT Wed May 10 2023

...FLASH FLOOD WARNING WILL EXPIRE AT 1 PM CDT THIS AFTERNOON FOR 
NORTHEASTERN JEFFERSON AND SOUTHWESTERN ORANGE COUNTIES...

The heavy rain has ended. Any flooding will be receding and is no 
longer expected to pose a threat. Please continue to heed remaining 
road closures.

A Flood Watch remains in effect until 700 PM CDT Wednesday for 
portions of Louisiana and southeast Texas.

LAT...LON 2998 9387 2979 9398 3010 9415 3016 9402
      3014 9399 3003 9397

$$

24

The office that day

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

Issued	Product	Office	Counties	Lasted
May 9, 7:49 PM CDT	Flash Flood Warning	LCH	Jasper, Newton, Orange	3 hr
May 10, 4:41 PM CDT	Special Weather Statement	LCH	Jefferson	34 min
May 10, 5:12 PM CDT	Severe Thunderstorm Warning	LCH	Jefferson, Orange	33 min
May 10, 5:46 PM CDT	Severe Thunderstorm Warning	LCH	Orange	29 min

Nearby

Flash Flood Warnings in Texas, 2023 Every flash flood warning in 2023

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.