Alert archive / Texas / Flash Flood Warnings in 2012

Flash Flood Warning 36, NWS Lake Charles, LA

July 13, 2012Hardin County, Texas

NWS Lake Charles, LA issued this flash flood warning at Jul 13, 2012, 10:33 AM CDT for Hardin County, Texas. It was in force for 4 hr. 1 report 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
Jul 13, 2012, 10:33 AM CDT (15:33 UTC)
Expired
Jul 13, 2012, 3:00 PM CDT
In force
4 hr
Issued by
NWS Lake Charles, LA
Area
Storm-based polygon
Flood severity
None

County Hardin County, TX

The radar

The Houston radar (KHGX), 99 km from the middle of the area, began a volume at 15:33 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

TimeReportWhereRemark
Jul 13, 1:08 PM CDTFLASH FLOOD3 Se Thicket, TXWATER OVER THE ROAD ON HIGHWAY 787

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 12:00Z, 3.6 hours before the alert went out and 131 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 2012-07-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1723 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 2012-07-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 36 square meters per square second.1939Sfc1 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
1723 J/kg
Mixed-layer CIN
-15 J/kg
Mixed-layer LCL
567 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
36 m²/s²
0-3 km storm-relative helicity
136 m²/s²
Significant tornado parameter
0.4
Supercell composite
3.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

007 
WGUS54 KLCH 131533
FFWLCH
TXC199-132000-
/O.NEW.KLCH.FF.W.0036.120713T1533Z-120713T2000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAKE CHARLES LA
1033 AM CDT FRI JUL 13 2012

THE NATIONAL WEATHER SERVICE IN LAKE CHARLES HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHWESTERN HARDIN COUNTY IN SOUTHEAST TEXAS...

* UNTIL 300 PM CDT

* AT 1026 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR            
  INDICATED   SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL     
  CONTINUE TO MOVE ACROSS THE WARNED AREA. RAINFALL AMOUNTS SINCE 8  
  AM...ARE ESTIMATED TO BE BETWEEN 2 AND 4 INCHES. AN AUTOMATED      
  DRAINAGE DISTRICT 6 RAIN GAUGE INDICATES THAT RAINFALL OF 3.11     
  INCHES HAS FALLEN AT LITTLE PINE ISLAND BAYOU AND HIGHWAY 787.     
  THEREFORE THE FLASH FLOOD WARNING HAD TO BE EXTENDED TO THE        
  NORTHWEST TO INCLUDE MORE OF WESTERN HARDIN COUNTY. THIS WILL      
  CAUSE FLOODING ALONG LITTLE PINE ISLAND BAYOU BETWEEN BATSON AND   
  THICKET.   

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  SARATOGA...THICKET AND BATSON.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE.

&&

LAT...LON 3039 9450 3014 9449 3011 9445 3011 9460
      3012 9461 3042 9471

$$
1 follow-up statement
267 
WGUS74 KLCH 131732
FFSLCH

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAKE CHARLES LA
1232 PM CDT FRI JUL 13 2012

TXC199-132000-
/O.CON.KLCH.FF.W.0036.000000T0000Z-120713T2000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HARDIN TX-
1232 PM CDT FRI JUL 13 2012

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR SOUTHWESTERN HARDIN
COUNTY UNTIL 300 PM CDT...

AT 1226 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
THUNDERSTORMS WITH VERY HEAVY RAINFALL ARE BEGINNING TO SHIFT SLOWLY 
SOUTH OUT OF THE WARNING AREA...HOWEVER LIGHT TO MODERATE RAINFALL 
WILL CONTINUE FOR THE NEXT FEW HOURS. ADDITIONAL RAINFALL AMOUNTS OF 
1 TO 2 INCHES ARE POSSIBLE THROUGH 2 PM. THIS IS IN ADDITION TO THE 
2 TO 4 WITH ISOLATED 5 INCH AMOUNTS THAT HAVE ALREADY OCCURRED. A 
DRAINAGE DISTRICT 6 RAIN GAUGE HAS MEASURED 4.8 INCHES OF RAINFALL 
SINCE 6 AM WITH 3.5 FALLING SINCE 9 AM. LITTLE PINE ISLAND BAYOU 
ACROSS WESTERN HARDIN COUNTY IS LIKELY FLOODING. 

RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLASH FLOODING INCLUDE...
SARATOGA...THICKET AND BATSON.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WARNING MEANS THAT FLASH FLOODING IS IMMINENT OR
OCCURRING. IF YOU ARE IN THE WARNING AREA...MOVE TO HIGHER GROUND
IMMEDIATELY. RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE
IMMEDIATE PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO
CROSS SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE.

&&

LAT...LON 3039 9450 3014 9449 3011 9445 3011 9460
      3012 9461 3042 9471

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 13, 5:32 AM CDTAreal Flood AdvisoryLCHHardin, Jasper, Jefferson, Newton, Orange, Tyler118 min
Jul 13, 6:00 AM CDTAreal Flood AdvisoryLCHJasper, Newton, Tyler105 min
Jul 13, 6:05 AM CDTFlash Flood WarningLCHHardin, Jefferson, Orange3 hr
Jul 13, 7:49 AM CDTAreal Flood AdvisoryLCHJasper, Newton, Tyler116 min
Jul 13, 8:56 AM CDTFlash Flood WarningLCHHardin, Jefferson, Orange6 hr
Jul 13, 9:46 AM CDTAreal Flood AdvisoryLCHJasper, Newton, Tyler119 min
Jul 13, 10:44 AM CDTFlash Flood WarningLCHJefferson4 hr
Jul 13, 11:50 AM CDTAreal Flood AdvisoryLCHJasper, Tyler3 hr
Jul 13, 2:52 PM CDTAreal Flood WarningLCHHardin24 hr
Jul 13, 2:57 PM CDTAreal Flood WarningLCHJefferson24 hr
Jul 13, 3:04 PM CDTAreal Flood WarningLCHOrange7 hr

Nearby

Flash Flood Warnings in Texas, 2012Every flash flood warning in 2012

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.