Alert archive / Missouri / Flash Flood Warnings in 2009

Flash Flood Warning 13, NWS Memphis, TN

April 28, 2009Dunklin County, Pemiscot County, Missouri; Mississippi County, Arkansas; Lake County, Tennessee

NWS Memphis, TN issued this flash flood warning at Apr 28, 2009, 6:38 AM CDT for Dunklin County, Pemiscot County, Missouri; Mississippi County, Arkansas; Lake County, Tennessee. It was in force for 4 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 28, 2009, 6:38 AM CDT (11:38 UTC)
Expired: Apr 28, 2009, 10:45 AM CDT
In force: 4 hr
Issued by: NWS Memphis, TN
Area: Storm-based polygon
Flood severity: None

Counties Mississippi County, AR, Dunklin County, MO, Pemiscot County, MO, Lake County, TN

The radar

The Memphis radar (KNQA), 103 km from the middle of the area, began a volume at 11:40 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, 11.6 hours before the alert went out and 160 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: 1387 J/kg
Mixed-layer CIN: -33 J/kg
Mixed-layer LCL: 912 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 197 m²/s²
0-3 km storm-relative helicity: 273 m²/s²
Significant tornado parameter: 1.7
Supercell composite: 8.9

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KMEG 281140
FFWMEG
ARC093-MOC069-155-TNC095-281545-
/O.NEW.KMEG.FF.W.0013.090428T1140Z-090428T1545Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MEMPHIS TN
638 AM CDT TUE APR 28 2009

THE NATIONAL WEATHER SERVICE IN MEMPHIS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  MISSISSIPPI COUNTY IN EASTERN ARKANSAS...
  LAKE COUNTY IN NORTHWEST TENNESSEE...
  SOUTHERN DUNKLIN COUNTY IN SOUTHEAST MISSOURI...
  PEMISCOT COUNTY IN SOUTHEAST MISSOURI...

* UNTIL 1045 AM CDT

* AT 638 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  HEAVY RAIN OVER THE WARNED AREA. OVER THE PAST 6 HOURS DOPPLER     
  RADAR ESTIMATES THAT 1 TO 3 INCHES OF RAINFALL HAS FALLEN ACROSS   
  THE WARNED AREA. SHOWERS AND SCATTERED THUNDERSTORMS WILL CONTINUE 
  TO MOVE ACROSS THE WARNED AREA WITH ADDITIONAL RAINFALL AMOUNTS
  BETWEEN 1 AND 2 INCHES POSSIBLE.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO REELFOOT
  LAKE STATE PARK...TIPTONVILLE...RIDGELY...COTTONWOOD GROVE...
  WARDELL...STEELE...SENATH...KENNETT...HORNERSVILLE...HAYTI
  HEIGHTS...HAYTI...DEERING...COOTER...CARUTHERSVILLE AND ARBYRD.

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

&&

LAT...LON 3623 8947 3618 8962 3564 8999 3552 9014
      3545 9028 3601 9029 3642 8998 3642 8997
      3639 8997 3639 8978 3644 8972 3641 8967
      3642 8961 3636 8954 3646 8956 3651 8953
      3650 8949 3645 8946 3651 8941 3651 8936

$$

2 follow-up statements

000 
WGUS74 KMEG 281335
FFSMEG

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MEMPHIS TN
835 AM CDT TUE APR 28 2009

ARC093-MOC069-155-TNC095-281545-
/O.CON.KMEG.FF.W.0013.000000T0000Z-090428T1545Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MISSISSIPPI AR-DUNKLIN MO-PEMISCOT MO-LAKE TN-
835 AM CDT TUE APR 28 2009

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1045 AM CDT FOR
LAKE...PEMISCOT...SOUTHERN DUNKLIN AND MISSISSIPPI COUNTIES...

AT 835 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE VERY HEAVY RAIN OVER THE WARNED AREA. TRAINED WEATHER
SPOTTERS REPORTED THAT 2 TO 4 INCHES OF RAINFALL HAS FALLEN ACROSS
THE WARNED AREA.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO REELFOOT LAKE
STATE PARK...TIPTONVILLE...RIDGELY AND WARDELL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

.ADDITIONAL RAINFALL AMOUNTS OF AN INCH ARE POSSIBLE IN THE WARNED AREA.

.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 3623 8947 3618 8962 3564 8999 3552 9014
      3545 9028 3601 9029 3642 8998 3642 8997
      3639 8997 3639 8978 3644 8972 3641 8967
      3642 8961 3636 8954 3646 8956 3651 8953
      3650 8949 3645 8946 3651 8941 3651 8936

$$

000 
WGUS74 KMEG 281543
FFSMEG

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MEMPHIS TN
1042 AM CDT TUE APR 28 2009

ARC093-MOC069-155-TNC095-281552-
/O.EXP.KMEG.FF.W.0013.000000T0000Z-090428T1545Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MISSISSIPPI AR-DUNKLIN MO-PEMISCOT MO-LAKE TN-
1042 AM CDT TUE APR 28 2009

...THE FLASH FLOOD WARNING WILL EXPIRE AT 1045 AM CDT FOR LAKE...
PEMISCOT...SOUTHERN DUNKLIN AND MISSISSIPPI COUNTIES...THE HEAVY 
RAINFALL WHICH PROMPTED THE WARNING HAS DIMINISHED OVER THE WARNED 
AREA. THUS THE FLASH FLOOD WARNING HAS BEEN ALLOWED TO EXPIRE. LIGHT 
RAIN WILL CONTINUE OVER EAST ARKANSAS...THE MISSOURI BOOTHEEL...AND 
EXTREME NORTHWEST TENNESSEE INTO THE AFTERNOON HOURS.

.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 3623 8947 3618 8962 3564 8999 3552 9014
      3545 9028 3601 9029 3642 8998 3642 8997
      3639 8997 3639 8978 3644 8972 3641 8967
      3642 8961 3636 8954 3646 8956 3651 8953
      3650 8949 3645 8946 3651 8941 3651 8936

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 28, 1:51 AM CDT	Areal Flood Advisory	MEG	Dunklin	3 hr
Apr 28, 3:19 AM CDT	Flash Flood Watch	MEG	Dunklin, Pemiscot	8 hr
Apr 28, 4:30 AM CDT	Flash Flood Warning	MEG	Dunklin	4 hr
Apr 28, 5:30 AM CDT	Areal Flood Advisory	MEG	Dunklin, Pemiscot	3 hr
Apr 28, 8:17 AM CDT	Flash Flood Warning	MEG	Dunklin	118 min
Apr 28, 1:18 AM CDT	Areal Flood Advisory	MEG	Clay, Greene, Lawrence, Randolph	3 hr
Apr 28, 2:21 AM CDT	Flash Flood Warning	MEG	Clay, Craighead, Greene, Lawrence, Poinsett, Randolph	3 hr
Apr 28, 2:50 PM CDT	Areal Flood Warning	MEG	Craighead, Poinsett	24 hr
Apr 28, 7:34 AM CDT	Areal Flood Advisory	MEG	Dyer, Gibson, Lauderdale, Obion, Weakley	3 hr

Nearby

Flash Flood Warnings in Missouri, 2009 Flash Flood Warnings in Arkansas, 2009 Flash Flood Warnings in Tennessee, 2009 Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.