Alert archive / Arkansas / Flash Flood Warnings in 2009

Flash Flood Warning 113, NWS Memphis, TN

July 21, 20098 counties in Arkansas; Dunklin County, Missouri

NWS Memphis, TN issued this flash flood warning at Jul 21, 2009, 9:52 AM CDT for 8 counties in Arkansas; Dunklin County, Missouri. It was in force for 6 hr. 2 reports 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 21, 2009, 9:52 AM CDT (14:52 UTC)
Expired
Jul 21, 2009, 3:45 PM CDT
In force
6 hr
Issued by
NWS Memphis, TN
Area
Storm-based polygon
Flood severity
None

Counties Clay County, AR, Craighead County, AR, Cross County, AR, Greene County, AR, Lawrence County, AR, Poinsett County, AR, Randolph County, AR, St. Francis County, AR, Dunklin County, MO

The radar

The Memphis radar (KNQA), 111 km from the middle of the area, began a volume at 14:55 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 21, 1:00 PM CDTFLASH FLOODBono, ARSTANDING WATER ON ROADWAYS AND YARDS.
Jul 21, 3:06 PM CDTFLASH FLOODBono, AR4.5 INCHES OF RAIN MEASURED IN BONO SINCE 9 AM.

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

The nearest sounding before it

Little Rock, AR (KLZK), launched 12:00Z, 2.9 hours before the alert went out and 150 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 12:00Z on 2009-07-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1648 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, Little Rock, AR at 12:00Z on 2009-07-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -8 square meters per square second.193958Sfc1 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
1648 J/kg
Mixed-layer CIN
-34 J/kg
Mixed-layer LCL
538 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
-8 m²/s²
0-3 km storm-relative helicity
45 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KMEG 211454
FFWMEG
ARC021-031-037-055-075-111-121-123-MOC069-212045-
/O.NEW.KMEG.FF.W.0113.090721T1454Z-090721T2045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MEMPHIS TN
952 AM CDT TUE JUL 21 2009

THE NATIONAL WEATHER SERVICE IN MEMPHIS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CLAY COUNTY IN EASTERN ARKANSAS...
  CRAIGHEAD COUNTY IN EASTERN ARKANSAS...
  WESTERN CROSS COUNTY IN EASTERN ARKANSAS...
  GREENE COUNTY IN EASTERN ARKANSAS...
  LAWRENCE COUNTY IN EASTERN ARKANSAS...
  WESTERN POINSETT COUNTY IN EASTERN ARKANSAS...
  RANDOLPH COUNTY IN EASTERN ARKANSAS...
  WESTERN ST. FRANCIS COUNTY IN EASTERN ARKANSAS...
  DUNKLIN COUNTY IN SOUTHEAST MISSOURI...

* UNTIL 345 PM CDT

* AT 952 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  VERY HEAVY RAIN OVER THE WARNED AREA. OVER THE PAST 3 HOURS DOPPLER
  RADAR ESTIMATES THAT 1 TO 2 INCHES OF RAINFALL HAS FALLEN ACROSS   
  THE WARNED AREA.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO 
  INCLUDE HOLCOMB...GLENNONVILLE...CLARKTON...CARDWELL...WALCOTT...
  SUCCESS...STRAWBERRY...ST. FRANCIS...REYNO...RAVENDEN SPRINGS...
  RAVENDEN...PORTIA...POLLARD...PEACH ORCHARD...OAK GROVE HEIGHTS...
  OKEAN...MINTURN...MCDOUGAL...MAYNARD...LYNN...LAFE...KNOBEL...
  IMBODEN...GREENWAY...FONTAINE...EVENING STAR...EGYPT...
  DELAPLAINE...DATTO...DALTON...COLLEGE CITY...CASH...BIGGERS...BEECH
  GROVE...ATTICA...ANNIEVILLE AND ALICIA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

.ADDITIONAL RAINFALL AMOUNTS OF 2 TO 5 INCHES ARE POSSIBLE IN THE 
WARNED AREA THROUGH THE AFTERNOON AND EVENING HOURS.  THE HEAVIEST 
RAINFALL WILL LIKELY OCCUR BETWEEN 1 AND 6 PM CDT.  THE HEAVY RAIN 
WILL DIMINISH AFTER 7 PM CDT.

.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.

.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.

.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 3644 8996 3490 9112 3491 9115 3500 9115
      3501 9105 3588 9104 3590 9137 3623 9136
      3625 9127 3632 9127 3649 9142 3651 9023
      3663 9016 3664 8997

$$
3 follow-up statements
000 
WGUS74 KMEG 211547
FFSMEG

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MEMPHIS TN
1045 AM CDT TUE JUL 21 2009

ARC021-031-037-055-075-111-121-123-MOC069-212045-
/O.CON.KMEG.FF.W.0113.000000T0000Z-090721T2045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CROSS AR-CRAIGHEAD AR-ST. FRANCIS AR-POINSETT AR-CLAY AR-RANDOLPH AR-
GREENE AR-LAWRENCE AR-DUNKLIN MO-
1045 AM CDT TUE JUL 21 2009

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 345 PM CDT FOR
NORTHERN DUNKLIN...LAWRENCE...GREENE...RANDOLPH...CLAY...WESTERN
POINSETT...WESTERN ST. FRANCIS...CRAIGHEAD AND WESTERN CROSS
COUNTIES...

AT 1045 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE VERY HEAVY RAIN OVER THE WARNED AREA...PARTICULARLY OVER 
LAWRENCE COUNTY JUST SOUTHWEST OF WALNUT RIDGE AND FAR WESTERN 
CRAIGHEAD AND POINSETT COUNTIES. OVER THE PAST 3 HOURS...DOPPLER 
RADAR ESTIMATES THAT 1 TO 3 INCHES OF RAINFALL HAS FALLEN ACROSS THE 
WARNED AREA.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO LAKE
FRIERSON STATE PARK...LAKE CHARLES STATE PARK...CROWLEYS RIDGE STATE
PARK...CHALK BLUFF NATURAL AREA...MALDEN...CAMPBELL...WALNUT RIDGE...
RECTOR...POCAHONTAS...PIGGOTT...PARAGOULD...MARMADUKE...HOXIE...
CORNING AND BLACK ROCK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

.ADDITIONAL RAINFALL AMOUNTS OF 2 TO 5 INCHES ARE LIKELY IN THE 
WARNED AREA THROUGH THE AFTERNOON AND EVENING HOURS. THE HEAVIEST 
RAINFALL WILL LIKELY OCCUR NOW AND 6 PM CDT IN THE WARNED AREA.  
THE HEAVY RAIN WILL DIMINISH AFTER 7 PM CDT.

.EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW
LYING AREAS ARE SUBJECT TO FLOODING.

.DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.

.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 3644 8996 3490 9112 3491 9115 3500 9115
      3501 9105 3588 9104 3590 9137 3623 9136
      3625 9127 3632 9127 3649 9142 3651 9023
      3663 9016 3664 8997

$$
000 
WGUS74 KMEG 211832
FFSMEG

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MEMPHIS TN
128 PM CDT TUE JUL 21 2009

ARC021-031-037-055-075-111-121-123-MOC069-212045-
/O.CON.KMEG.FF.W.0113.000000T0000Z-090721T2045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CROSS AR-CRAIGHEAD AR-ST. FRANCIS AR-POINSETT AR-CLAY AR-RANDOLPH AR-
GREENE AR-LAWRENCE AR-DUNKLIN MO-
128 PM CDT TUE JUL 21 2009

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 345 PM CDT FOR
NORTHERN DUNKLIN...LAWRENCE...GREENE...RANDOLPH...CLAY...WESTERN
POINSETT...WESTERN ST. FRANCIS...CRAIGHEAD AND WESTERN CROSS
COUNTIES...

AT 128 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE RAIN OVER THE WARNED AREA. OVER THE PAST 3 HOURS DOPPLER 
RADAR ESTIMATES THAT 1 TO 3 INCHES OF RAINFALL HAS FALLEN ACROSS THE 
WARNED AREA.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO LAKE
FRIERSON STATE PARK...LAKE CHARLES STATE PARK...CROWLEYS RIDGE STATE
PARK...CHALK BLUFF NATURAL AREA...MALDEN...CAMPBELL...WALNUT RIDGE...
RECTOR...POCAHONTAS...PIGGOTT...PARAGOULD...MARMADUKE...HOXIE...
CORNING AND BLACK ROCK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

.ADDITIONAL RAINFALL AMOUNTS OF 1 TO 3 INCHES ARE LIKELY IN THE 
WARNED AREA THROUGH THE AFTERNOON AND EVENING HOURS.

.A BRIEF PERIOD OF LIGHT RAIN CAN BE EXPECTED BEFORE MODERATE TO 
HEAVY RAIN RETURNS TO THE WARNED AREA BETWEEN 3 AND 7 PM CDT.

.THE RAIN WILL DIMINISH AFTER 7 PM CDT.

.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.

.TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY
YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN
MEMPHIS.

.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 3644 8996 3490 9112 3491 9115 3500 9115
      3501 9105 3588 9104 3590 9137 3623 9136
      3625 9127 3632 9127 3649 9142 3651 9023
      3663 9016 3664 8997

$$
000 
WGUS74 KMEG 212040
FFSMEG

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MEMPHIS TN
337 PM CDT TUE JUL 21 2009

ARC021-031-037-055-075-111-121-123-MOC069-212045-
/O.CON.KMEG.FF.W.0113.000000T0000Z-090721T2045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CROSS AR-CRAIGHEAD AR-ST. FRANCIS AR-POINSETT AR-CLAY AR-RANDOLPH AR-
GREENE AR-LAWRENCE AR-DUNKLIN MO-
337 PM CDT TUE JUL 21 2009

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 345 PM CDT FOR
NORTHERN DUNKLIN...LAWRENCE...GREENE...RANDOLPH...CLAY...WESTERN
POINSETT...WESTERN ST. FRANCIS...CRAIGHEAD AND WESTERN CROSS
COUNTIES...

AT 337 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR 
INDICATED LIGHT RAIN OVER THE WARNED AREA. OVER THE PAST 7 
HOURS...DOPPLER RADAR ESTIMATES THAT 1 TO 5 INCHES OF RAINFALL HAS 
FALLEN ACROSS THE WARNED AREA.  4.5 INCHES OF RAINFALL WAS MEASURED 
IN BONO BETWEEN 9 AM AND 306 PM CDT.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO LAKE
FRIERSON STATE PARK...LAKE CHARLES STATE PARK...CROWLEYS RIDGE STATE
PARK...CHALK BLUFF NATURAL AREA...MALDEN...CAMPBELL...WALNUT RIDGE...
RECTOR...POCAHONTAS...PIGGOTT...PARAGOULD...MARMADUKE...HOXIE...
CORNING AND BLACK ROCK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

.ADDITIONAL RAINFALL AMOUNTS WILL ONLY BE BETWEEN 0.10 AND 0.50 INCH 
FOR THE REST OF THE AFTERNOON AND EVENING...WHICH SHOULD NOT CAUSE 
ANY ADDITIONAL FLOODING. THE RAIN WILL END NORTHWEST TO SOUTHEAST 
BETWEEN 7 AND 10 PM CDT.

.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 3644 8996 3490 9112 3491 9115 3500 9115
      3501 9105 3588 9104 3590 9137 3623 9136
      3625 9127 3632 9127 3649 9142 3651 9023
      3663 9016 3664 8997

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 21, 10:06 AM CDTFlash Flood WatchMEGClay, Craighead, Crittenden, Cross, Greene, Lawrence and 6 more17 hr
Jul 21, 11:35 AM CDTFlash Flood WarningMEGCraighead, Crittenden, Cross, Lee, Mississippi, Phillips and 2 more6 hr
Jul 21, 1:13 PM CDTFlash Flood WarningMEGCrittenden, Lee, Mississippi, Phillips, St. Francis6 hr

Nearby

Flash Flood Warnings in Arkansas, 2009Flash Flood Warnings in Missouri, 2009Every flash flood warning in 2009

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.