Alert archive / Texas / Flash Flood Warnings in 2012

Flash Flood Warning 33, NWS Lake Charles, LA

July 12, 2012Hardin County, Texas

NWS Lake Charles, LA issued this flash flood warning at Jul 12, 2012, 2:30 PM CDT for Hardin County, Texas. It was in force for 3 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 12, 2012, 2:30 PM CDT (19:30 UTC)
Expired: Jul 12, 2012, 5:30 PM CDT
In force: 3 hr
Issued by: NWS Lake Charles, LA
Area: Storm-based polygon
Flood severity: None

County Hardin County, TX

The radar

The Houston radar (KHGX), 111 km from the middle of the area, began a volume at 19:29 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
Jul 12, 4:00 PM CDT	FLASH FLOOD	2 Nw Batson, TX	WATER REPORTED OVER THE ROAD ON HWY 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, 7.5 hours before the alert went out and 145 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: 2309 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 713 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 64 m²/s²
0-3 km storm-relative helicity: 103 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

236 
WGUS54 KLCH 121930
FFWLCH
TXC199-122230-
/O.NEW.KLCH.FF.W.0033.120712T1930Z-120712T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAKE CHARLES LA
230 PM CDT THU JUL 12 2012

THE NATIONAL WEATHER SERVICE IN LAKE CHARLES HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  WEST CENTRAL HARDIN COUNTY IN SOUTHEAST TEXAS...

* UNTIL 530 PM CDT

* AT 226 PM CDT...STREAM GAUGE OBSERVATIONS STILL INDICATE THAT      
  RUNOFF CONTINUES ACROSS WESTERN HARDIN COUNTY FROM HEAVIER SHOWERS 
  AND THUNDERSTORMS THT MOVED ACROSS THE AREA EARLIER DURING THE     
  DAY. RAINFALL AMOUNTS SINCE ABOUT 8 AM HAVE BEEN BETWEEN 2 AND 4   
  INCHES ACROSS WEST CENTRAL HARDIN COUNTY FROM FROM NEAR VOTAW AND  
  NORTH OF BATSON. FLOODING WILL LIKELY CONTINUE ON THE UPPER        
  REACHES OF PINE ISLAND BAYOU AND THE TRIBUTARIES SUCH AS LITTLE    
  PINE ISLAND BAYOU. SOME SECONDARY ROADS ACROSS THE AREA MAYBE      
  FLOODED. 

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...THICKET...
  BATSON AND VOTAW.

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 3050 9473 3050 9465 3049 9457 3025 9459
      3021 9464 3036 9470 3037 9469 3045 9473

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 12, 8:14 AM CDT	Areal Flood Advisory	LCH	Jasper, Tyler	3 hr
Jul 12, 8:51 AM CDT	Areal Flood Advisory	LCH	Hardin, Jasper, Jefferson, Newton, Tyler	3 hr
Jul 12, 9:42 AM CDT	Areal Flood Advisory	LCH	Jefferson	3 hr
Jul 12, 11:11 AM CDT	River Flood Warning	LCH	Hardin, Jefferson	10 days
Jul 12, 11:34 AM CDT	Flash Flood Warning	LCH	Hardin	3 hr
Jul 12, 12:21 PM CDT	Areal Flood Advisory	LCH	Jasper	3 hr

Nearby

Flash Flood Warnings in Texas, 2012 Every 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.