Alert archive / Arkansas / Flash Flood Warnings in 2011

Flash Flood Warning 10, NWS Memphis, TN

February 24, 20114 counties in Arkansas; Dunklin County, Pemiscot County, Missouri

NWS Memphis, TN issued this flash flood warning at Feb 24, 2011, 2:48 AM CST for 4 counties in Arkansas; Dunklin County, Pemiscot County, Missouri. 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
Feb 24, 2011, 2:48 AM CST (08:48 UTC)
Expired
Feb 24, 2011, 5:45 AM CST
In force
3 hr
Issued by
NWS Memphis, TN
Area
Storm-based polygon
Flood severity
None

Counties Clay County, AR, Greene County, AR, Lawrence County, AR, Randolph County, AR, Dunklin County, MO, Pemiscot County, MO

The radar

The Memphis radar (KNQA), 100 km from the middle of the area, began a volume at 08:47 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

Little Rock, AR (KLZK), launched 00:00Z, 8.8 hours before the alert went out and 155 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, Little Rock, AR at 00:00Z on 2011-02-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Little Rock, AR at 00:00Z on 2011-02-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 268 square meters per square second.1939587897117Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
834 m above ground
0-6 km bulk shear
83 kt
0-1 km storm-relative helicity
268 m²/s²
0-3 km storm-relative helicity
268 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.

235 
WGUS54 KMEG 240848
FFWMEG
ARC021-055-075-121-MOC069-155-241145-
/O.NEW.KMEG.FF.W.0010.110224T0848Z-110224T1145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MEMPHIS TN
248 AM CST THU FEB 24 2011

THE NATIONAL WEATHER SERVICE IN MEMPHIS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHERN CLAY COUNTY IN EASTERN ARKANSAS...
  GREENE COUNTY IN EASTERN ARKANSAS...
  LAWRENCE COUNTY IN EASTERN ARKANSAS...
  SOUTHERN RANDOLPH COUNTY IN EASTERN ARKANSAS...
  DUNKLIN COUNTY IN SOUTHEAST MISSOURI...
  PEMISCOT COUNTY IN SOUTHEAST MISSOURI...

* UNTIL 545 AM CST

* AT 248 AM CST...DOPPLER RADAR ESTIMATES 2 TO 4 INCHES OF RAINFALL
  HAS OCCURRED OVER THE PAST 3 HOURS. SHOWERS AND THUNDERSTORMS WILL
  PRODUCE AN ADDITIONAL 1 TO 3 INCHES OF RAIN OVER THE NEXT 3 HOURS.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO BLACK
  ROCK...HOXIE...MARMADUKE...PARAGOULD...PIGGOTT...POCAHONTAS...
  RECTOR...WALNUT RIDGE...CARUTHERSVILLE...DENTON...HAYTI...
  HAYWARD...HOMESTOWN AND KENNETT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

.STAY TUNED TO THIS BROADCAST FOR THE LATEST UPDATES AND INFORMATION.
TO REPORT FLASH FLOODING ONLY...CALL 1 800 4 3 2 0 8 7 5.

&&

LAT...LON 3622 9136 3642 8996 3640 8997 3639 8978
      3644 8974 3640 8959 3636 8958 3634 8962
      3630 8958 3625 8959 3625 8970 3618 8962
      3602 8969 3597 9039 3597 9085 3588 9090
      3590 9137

$$
1 follow-up statement
462 
WGUS74 KMEG 241102
FFSMEG

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MEMPHIS TN
502 AM CST THU FEB 24 2011

ARC021-055-075-121-MOC069-155-241145-
/O.CON.KMEG.FF.W.0010.000000T0000Z-110224T1145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CLAY AR-RANDOLPH AR-GREENE AR-LAWRENCE AR-DUNKLIN MO-PEMISCOT MO-
502 AM CST THU FEB 24 2011

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 545 AM CST FOR
PEMISCOT...DUNKLIN...LAWRENCE...GREENE...SOUTHERN RANDOLPH AND
SOUTHERN CLAY COUNTIES...

AT 501 AM CST...DOPPLER RADAR ESTIMATES 2 TO 4 INCHES OF RAINFALL HAS
OCCURRED OVER THE PAST 6 HOURS. SHOWERS AND THUNDERSTORMS WILL 
PRODUCE AN ADDITIONAL 1 INCH OF RAIN OVER THE NEXT HOUR.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO BLACK ROCK...
HOXIE...MARMADUKE...PARAGOULD...PIGGOTT...POCAHONTAS...RECTOR...
WALNUT RIDGE...CARUTHERSVILLE...DENTON...HAYTI...HAYWARD...
HOMESTOWN...KENNETT...SENATH...STEELE...FRISBEE...WHITE OAK...
IPLEY...DILLMAN...SCOBEVILLE...TINKERVILLE...GOBLER...DEER LAND...
VINCIT...OCTA...CARUTH...BOWIE CORNER...RIVES...COTTON PLANT...
EUROPA...BUCODA...BUCK DONIC...HOLLYWOOD...SUNRISE...PAULDING...
HORNERSVILLE JUNCTION...GILBERT...TEMPLES CORNER...PEACH ORCHARD...
STEWART...STANLEY...SWIFT...BAKERVILLE...BRAGGADOCIO...SHADE...
STUBTOWN...CANADY...NEW SURVEY...COVINGTON...COTTONWOOD POINT...
TYLER...HERMONDALE...WEST HERMONDALE...CHANNEL...SAMFORD...CROWLEYS
RIDGE STATE PARK...LAKE CHARLES STATE PARK AND LAKE FRIERSON STATE
PARK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

.MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE
INTO AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE
USUALLY DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS
POWERFUL ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING
FLOODED ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.

.STAY TUNED TO THIS BROADCAST FOR THE LATEST UPDATES AND INFORMATION.
TO REPORT SEVERE WEATHER ONLY...CALL 1 800 4 3 2 0 8 7 5.

&&

LAT...LON 3622 9136 3642 8996 3640 8997 3639 8978
      3644 8974 3640 8959 3636 8958 3634 8962
      3630 8958 3625 8959 3625 8970 3618 8962
      3602 8969 3597 9039 3597 9085 3588 9090
      3590 9137

$$

The office that day

Everything else NWS Memphis, TN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Feb 24, 5:45 AM CSTFlash Flood WarningMEGClay, Greene, Lawrence, Randolph3 hr
Feb 24, 8:47 AM CSTFlash Flood WarningMEGClay, Greene, Lawrence, Randolph3 hr
Feb 24, 11:28 AM CSTRiver Flood AdvisoryMEGMississippi35 hr
Feb 24, 11:45 AM CSTFlash Flood WarningMEGClay, Greene, Lawrence, Randolph3 hr
Feb 24, 1:08 PM CSTRiver Flood WarningMEGMississippi, Poinsett54 hr
Feb 24, 2:44 PM CSTFlash Flood WarningMEGClay, Craighead, Greene, Lawrence, Mississippi, Randolph6 hr
Feb 24, 4:59 PM CSTTornado WarningMEGClay, Greene46 min
Feb 24, 5:04 PM CSTFlash Flood WarningMEGCraighead, Mississippi, Poinsett4 hr
Feb 24, 5:11 PM CSTTornado WarningMEGClay49 min
Feb 24, 5:17 PM CSTFlash Flood WarningMEGMississippi5 hr
Feb 24, 5:40 PM CSTSevere Thunderstorm WarningMEGClay, Craighead, Cross, Greene, Lawrence, Poinsett50 min
Feb 24, 5:43 PM CSTSevere Thunderstorm WarningMEGCrittenden, Cross, Lee, Poinsett, St. Francis47 min
Feb 24, 5:47 PM CSTFlash Flood WarningMEGCrittenden, Cross, Lee, St. Francis3 hr
Feb 24, 3:04 AM CSTFlash Flood WarningMEGPemiscot3 hr

Nearby

Flash Flood Warnings in Arkansas, 2011Flash Flood Warnings in Missouri, 2011Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.