Alert archive / Louisiana / Flash Flood Warnings in 2011

Flash Flood Warning 1, NWS Lake Charles, LA

March 8, 2011Avoyelles Parish, Rapides Parish, Louisiana

NWS Lake Charles, LA issued this flash flood warning at Mar 8, 2011, 7:41 PM CST for Avoyelles Parish, Rapides Parish, Louisiana. 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: Mar 8, 2011, 7:41 PM CST (01:41 UTC)
Expired: Mar 8, 2011, 10:30 PM CST
In force: 3 hr
Issued by: NWS Lake Charles, LA
Area: Storm-based polygon
Flood severity: None

Counties Avoyelles Parish, LA, Rapides Parish, LA

What was reported inside it

Time	Report	Where	Remark
Mar 8, 10:38 PM CST	FLASH FLOOD	Alexandria, LA	RAPIDES 911 CONTINUES TO REPORT SEVERAL CARS FLOODED THROUGHOUT THE PARISH.

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 00:00Z, 1.7 hours before the alert went out and 142 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: 2444 J/kg
Mixed-layer CIN: -6 J/kg
Mixed-layer LCL: 506 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 195 m²/s²
0-3 km storm-relative helicity: 210 m²/s²
Significant tornado parameter: 2.5
Supercell composite: 12.5

Open this sounding in Storm Lab

The text

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

504 
WGUS54 KLCH 090141
FFWLCH
LAC009-079-090430-
/O.NEW.KLCH.FF.W.0001.110309T0141Z-110309T0430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAKE CHARLES LA
741 PM CST TUE MAR 8 2011

THE NATIONAL WEATHER SERVICE IN LAKE CHARLES HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHWESTERN AVOYELLES PARISH IN CENTRAL LOUISIANA...
  RAPIDES PARISH IN CENTRAL LOUISIANA...

* UNTIL 1030 PM CST

* AT 736 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE   
  WARNED AREA. DOPPLER RADAR INDICATED THAT ALMOST 3 INCHES OF 
  RAINFALL OCCURRED WITHIN THE PAST 2 HOURS ACROSS ALEXANDRIA 
  AND VICINITY.

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  ALEXANDRIA...ALEXANDRIA INTERNATIONAL AIRPORT...BOYCE...
  CHENEYVILLE...GLENMORA...HINESTON...LENA...PINEVILLE...BALL...
  CENTERPOINT...ECHO...ELMER...ESLER REGIONAL AIRPORT...GARDNER...
  HOLLOWAY...KINGSVILLE...KOLIN...LECOMPTE...LIBUSE...OTIS...
  PARADISE...POLAND...RUBY...SIEPER...TIMBER TRAILS AND TIOGA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

ADDITIONAL RAINFALL AMOUNTS FROM 1 TO 2 INCHES ARE POSSIBLE IN
THE WARNED AREA OVER THE NEXT 3 HOURS.

LAW ENFORCEMENT REPORTED THAT WATER HAD ENTERED A HOME LOCATED ON 
THE SOUTHEAST SIDE OF ALEXANDRIA.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. DO
NOT ENTER THE WATER. TURN AROUND AND MOVE UP TO HIGHER GROUND TO
ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN
WATER BEGINS RISING.

&&

LAT...LON 3151 9270 3147 9270 3142 9267 3140 9263
      3149 9221 3148 9217 3098 9223 3097 9233
      3099 9235 3100 9239 3097 9242 3095 9249
      3091 9279 3144 9283 3152 9272

$$

JT

1 follow-up statement

539 
WGUS74 KLCH 090343
FFSLCH

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAKE CHARLES LA
943 PM CST TUE MAR 8 2011

LAC009-079-090430-
/O.CON.KLCH.FF.W.0001.000000T0000Z-110309T0430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
RAPIDES LA-AVOYELLES LA-
943 PM CST TUE MAR 8 2011

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR NORTHWESTERN AVOYELLES
AND RAPIDES PARISHES UNTIL 1030 PM CST...

AT 938 PM CST...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED 
THUNDERSTORMS SEVERAL ROADS FLOODED  ACROSS THE WARNED AREA. 
RAINFALL AMOUNTS 2 TO 4 INCHES HAS OCCURRED WITH THUNDERSTORMS FROM 
THE COMMUNITY OF CALCASIEU NORTHEAST ACROSS WOODWORTH AND ALEXANDRIA 
TO NEAR DEVILLE.

RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLASH FLOODING INCLUDE...
ALEXANDRIA...ALEXANDRIA INTERNATIONAL AIRPORT...BOYCE...
CHENEYVILLE...GLENMORA...HINESTON...LENA...PINEVILLE...BALL...
CENTERPOINT...ECHO...ELMER...ESLER REGIONAL AIRPORT...GARDNER...
HOLLOWAY...KINGSVILLE...KOLIN...LECOMPTE...LIBUSE...OTIS...
PARADISE...POLAND...RUBY...SIEPER...TIMBER TRAILS AND TIOGA.

SOME OF THE CREEKS THAT MAY FLOOD INCLUDE BUT NOT LIMITED TO 
HORSEPEN CREEK...WIGGINS BAYOU...BAYOU BOEUF...CASTOR CREEK AND 
LITTLE BRUSHY CREEK.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLOODING IS OBSERVED...ACT QUICKLY. DO NOT
ENTER THE WATER. TURN AROUND AND MOVE UP TO HIGHER GROUND. DO NOT
STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

&&

LAT...LON 3151 9270 3147 9270 3142 9267 3140 9263
      3149 9221 3148 9217 3098 9223 3097 9233
      3099 9235 3100 9239 3097 9242 3095 9249
      3091 9279 3144 9283 3152 9272

$$

BRAZZELL

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 8, 6:26 PM CST	Areal Flood Advisory	LCH	Rapides	109 min
Mar 8, 6:33 PM CST	Special Weather Statement	LCH	Rapides	42 min
Mar 8, 6:44 PM CST	Special Weather Statement	LCH	Beauregard	61 min
Mar 8, 7:43 PM CST	Special Weather Statement	LCH	Allen	62 min
Mar 8, 8:01 PM CST	Severe Thunderstorm Warning	LCH	Allen, Beauregard, Rapides, Vernon	59 min
Mar 8, 8:46 PM CST	Tornado Warning	LCH	Rapides	29 min
Mar 8, 8:58 PM CST	Tornado Warning	LCH	Rapides	47 min
Mar 8, 9:32 PM CST	Special Weather Statement	LCH	Vernon	58 min
Mar 8, 9:44 PM CST	Severe Thunderstorm Warning	LCH	Rapides	30 min
Mar 8, 9:58 PM CST	Severe Thunderstorm Warning	LCH	Vernon	62 min
Mar 8, 10:28 PM CST	Flash Flood Warning	LCH	Rapides, Vernon	3 hr
Mar 8, 11:36 PM CST	Special Weather Statement	LCH	Rapides	39 min
Mar 9, 12:07 AM CST	Special Weather Statement	LCH	Rapides	53 min
Mar 9, 12:11 AM CST	Severe Thunderstorm Warning	LCH	Avoyelles, Rapides	34 min
Mar 9, 1:00 AM CST	Severe Thunderstorm Warning	LCH	Rapides	60 min
Mar 9, 1:20 AM CST	Special Weather Statement	LCH	Avoyelles	40 min
Mar 9, 1:32 AM CST	Flash Flood Warning	LCH	Rapides, Vernon	3 hr
Mar 9, 2:05 AM CST	Special Weather Statement	LCH	Avoyelles	40 min
Mar 9, 3:13 AM CST	Small Craft Advisory	LCH		31 hr
Mar 9, 3:48 AM CST	Special Weather Statement	LCH	Saint Martin	42 min
Mar 9, 4:38 AM CST	Areal Flood Warning	LCH	Rapides	3 hr
Mar 9, 8:53 AM CST	Marine Dense Fog Advisory	LCH		9 hr
Mar 9, 11:20 AM CST	River Flood Warning	LCH	Allen, Rapides	53 hr

Nearby

Flash Flood Warnings in Louisiana, 2011 Every flash flood warning in 2011

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.