Alert archive / Arkansas / Flash Flood Warnings in 2011

Flash Flood Warning 53, NWS Memphis, TN

April 23, 2011Clay County, Randolph County, Arkansas; Dunklin County, Missouri

NWS Memphis, TN issued this flash flood warning at Apr 23, 2011, 9:33 PM CDT for Clay County, Randolph County, Arkansas; Dunklin County, Missouri. It was in force for 5 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: Apr 23, 2011, 9:33 PM CDT (02:33 UTC)
Expired: Apr 24, 2011, 2:30 AM CDT
In force: 5 hr
Issued by: NWS Memphis, TN
Area: Storm-based polygon
Flood severity: None

Counties Clay County, AR, Randolph County, AR, Dunklin County, MO

The radar

The Memphis radar (KNQA), 139 km from the middle of the area, began a volume at 02:36 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, 2.6 hours before the alert went out and 188 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: 781 J/kg
Mixed-layer CIN: -114 J/kg
Mixed-layer LCL: 1432 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 166 m²/s²
0-3 km storm-relative helicity: 226 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 5.7

Open this sounding in Storm Lab

The text

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

369 
WGUS54 KMEG 240233
FFWMEG
ARC021-121-MOC069-240530-
/O.NEW.KMEG.FF.W.0053.110424T0233Z-110424T0530Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MEMPHIS TN
933 PM CDT SAT APR 23 2011

THE NATIONAL WEATHER SERVICE IN MEMPHIS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHERN CLAY COUNTY IN EASTERN ARKANSAS...
  RANDOLPH COUNTY IN EASTERN ARKANSAS...
  NORTHEASTERN DUNKLIN COUNTY IN SOUTHEAST MISSOURI...

* UNTIL 1230 AM CDT

* AT 932 PM CDT...DOPPLER RADAR ESTIMATES 1 TO 2 INCHES OF RAINFALL
  HAS OCCURRED OVER THE PAST HOUR. 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 CORNING...
  PIGGOTT...POCAHONTAS...CAMPBELL...MALDEN...TOWNLEY...BRIAN...VALLEY
  RIDGE...WILHELMINA...PROVIDENCE...MC GUIRES...BAIRD AND CHALK BLUFF
  NATURAL AREA.

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.

.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 FLASH FLOODING ONLY...CALL 1 800 4 3 2 0 8 7 5.

&&

LAT...LON 3657 8994 3644 8996 3637 9025 3622 9120
      3624 9122 3622 9124 3626 9125 3627 9128
      3637 9129 3648 9142 3651 9023 3660 9020
      3664 9015 3664 8997

$$

2 follow-up statements

739 
WGUS54 KMEG 240456
FFWMEG
ARC021-121-MOC069-240730-
/O.EXT.KMEG.FF.W.0053.000000T0000Z-110424T0730Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MEMPHIS TN
1156 PM CDT SAT APR 23 2011

THE NATIONAL WEATHER SERVICE IN MEMPHIS HAS EXTENDED THE

* FLASH FLOOD WARNING FOR...
  NORTHERN CLAY COUNTY IN EASTERN ARKANSAS...
  RANDOLPH COUNTY IN EASTERN ARKANSAS...
  NORTHEASTERN DUNKLIN COUNTY IN SOUTHEAST MISSOURI...

* UNTIL 230 AM CDT

* AT 1156 PM CDT...DOPPLER RADAR ESTIMATES 2 TO 4 INCHES OF RAINFALL
  HAS OCCURRED OVER THE PAST 2 HOURS. SHOWERS AND THUNDERSTORMS WILL
  PRODUCE AN ADDITIONAL 1 TO 3 INCHES OF RAIN OVER THE NEXT 2 HOURS.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO CORNING...
  PIGGOTT...POCAHONTAS...CAMPBELL...MALDEN...TOWNLEY...BRIAN...VALLEY
  RIDGE...WILHELMINA...PROVIDENCE...MC GUIRES...BAIRD AND CHALK BLUFF
  NATURAL AREA.

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.

.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 FLASH FLOODING ONLY...CALL 1 800 4 3 2 0 8 7 5.

&&

LAT...LON 3657 8994 3644 8996 3637 9025 3622 9120
      3624 9122 3622 9124 3626 9125 3627 9128
      3637 9129 3648 9142 3651 9023 3660 9020
      3664 9015 3664 8997

$$

133 
WGUS74 KMEG 240700
FFSMEG

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MEMPHIS TN
200 AM CDT SUN APR 24 2011

ARC021-121-MOC069-240730-
/O.CON.KMEG.FF.W.0053.000000T0000Z-110424T0730Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CLAY AR-RANDOLPH AR-DUNKLIN MO-
200 AM CDT SUN APR 24 2011

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 230 AM CDT FOR
NORTHEASTERN DUNKLIN...RANDOLPH AND NORTHERN CLAY COUNTIES...

AT 200 AM CDT...DOPPLER RADAR ESTIMATES 3 TO 5 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 2 HOURS.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO CORNING...
PIGGOTT...POCAHONTAS...CAMPBELL...MALDEN...TOWNLEY...BRIAN...VALLEY
RIDGE...WILHELMINA...PROVIDENCE...MC GUIRES...BAIRD AND CHALK BLUFF
NATURAL AREA.

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 3657 8994 3644 8996 3637 9025 3622 9120
      3624 9122 3622 9124 3626 9125 3627 9128
      3637 9129 3648 9142 3651 9023 3660 9020
      3664 9015 3664 8997

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 23, 8:26 PM CDT	Severe Thunderstorm Warning	MEG	Randolph	49 min
Apr 23, 9:11 PM CDT	Severe Thunderstorm Warning	MEG	Clay, Randolph	49 min
Apr 23, 10:16 PM CDT	Special Weather Statement	MEG	Clay	29 min
Apr 23, 10:26 PM CDT	Severe Thunderstorm Warning	MEG	Clay	34 min
Apr 23, 11:52 PM CDT	Flash Flood Warning	MEG	Clay, Greene	3 hr
Apr 23, 11:52 PM CDT	Severe Thunderstorm Warning	MEG	Clay, Greene, Randolph	38 min
Apr 24, 2:32 AM CDT	Flash Flood Warning	MEG	Clay, Randolph	107 min
Apr 24, 2:41 AM CDT	Special Weather Statement	MEG	Cross	34 min
Apr 24, 3:01 AM CDT	Special Weather Statement	MEG	Clay	29 min
Apr 24, 3:22 AM CDT	Special Weather Statement	MEG	Clay, Greene	23 min
Apr 24, 12:16 PM CDT	River Flood Warning	MEG	Craighead	25 days
Apr 24, 12:16 PM CDT	River Flood Warning	MEG	Mississippi, Poinsett	23 days
Apr 24, 2:38 PM CDT	Flash Flood Watch	MEG	Craighead, Crittenden, Cross, Lee, Mississippi, Phillips and 2 more	3 days
Apr 24, 3:06 PM CDT	Severe Thunderstorm Warning	MEG	Lawrence, Randolph	54 min
Apr 24, 4:55 PM CDT	Severe Thunderstorm Warning	MEG	Greene, Lawrence, Randolph	50 min
Apr 24, 5:32 PM CDT	Severe Thunderstorm Warning	MEG	Clay, Greene	43 min
Apr 24, 5:45 PM CDT	Tornado Warning	MEG	Greene	30 min
Apr 24, 6:09 PM CDT	Tornado Warning	MEG	Clay, Greene	36 min
Apr 24, 6:14 PM CDT	Severe Thunderstorm Warning	MEG	Clay, Greene	46 min
Apr 23, 8:59 PM CDT	Severe Thunderstorm Warning	MEG	Dunklin	31 min
Apr 23, 11:22 PM CDT	Severe Thunderstorm Warning	MEG	Pemiscot	38 min
Apr 24, 12:44 AM CDT	Special Weather Statement	MEG	Pemiscot	46 min
Apr 24, 6:40 PM CDT	Severe Thunderstorm Warning	MEG	Dunklin, Pemiscot	27 min

Nearby

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