Alert archive / Mississippi / Flash Flood Warnings in 2011

Flash Flood Warning 21, NWS Memphis, TN

February 24, 20114 counties in Mississippi; Phillips County, Arkansas

NWS Memphis, TN issued this flash flood warning at Feb 24, 2011, 7:08 PM CST for 4 counties in Mississippi; Phillips County, Arkansas. It was in force for 2 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, 7:08 PM CST (01:08 UTC)
Expired
Feb 24, 2011, 9:33 PM CST
In force
2 hr
Issued by
NWS Memphis, TN
Area
Storm-based polygon
Flood severity
None

Counties Phillips County, AR, Coahoma County, MS, Panola County, MS, Quitman County, MS, Tunica County, MS

The radar

The Memphis radar (KNQA), 134 km from the middle of the area, began a volume at 01:09 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, 1.1 hours before the alert went out and 85 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 2011-02-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 165 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 00:00Z on 2011-02-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -230 square meters per square second.1939587897Sfc1 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
165 J/kg
Mixed-layer CIN
-30 J/kg
Mixed-layer LCL
579 m above ground
0-6 km bulk shear
54 kt
0-1 km storm-relative helicity
-230 m²/s²
0-3 km storm-relative helicity
-371 m²/s²
Significant tornado parameter
-0.2
Supercell composite
-0.9

Open this sounding in Storm Lab

The text

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

963 
WGUS54 KMEG 250108
FFWMEG
ARC107-MSC027-107-119-143-250400-
/O.NEW.KMEG.FF.W.0021.110225T0108Z-110225T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

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

THE NATIONAL WEATHER SERVICE IN MEMPHIS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  PHILLIPS COUNTY IN EASTERN ARKANSAS...
  COAHOMA COUNTY IN NORTHWEST MISSISSIPPI...
  PANOLA COUNTY IN NORTHWEST MISSISSIPPI...
  QUITMAN COUNTY IN NORTHWEST MISSISSIPPI...
  SOUTHERN TUNICA COUNTY IN NORTHWEST MISSISSIPPI...

* UNTIL 1000 PM CST

* AT 705 PM CST...DOPPLER RADAR ESTIMATES OF UP TO AN INCH OF 
RAINFALL HAS OCCURRED OVER THE PAST 6 HOURS. SHOWERS AND 
THUNDERSTORMS WILL PRODUCE AN ADDITIONAL 1 TO 2 INCHES OF RAIN OVER 
THE NEXT 3 HOURS.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO ELAINE...
  HELENA...MARVELL...WEST HELENA...BATESVILLE...CLARKSDALE...JOHN W
  KYLE STATE PARK...ST FRANCIS NATIONAL PARK AND WHITE RIVER NATIONAL
  WILDLIFE REFUGE.

 THIS WARNING ALSO INCLUDES AREAS NEAR DESOTO LAKE...HORSESHOE
  LAKE...MOON LAKE AND OLD TOWN LAKE.

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 3415 9108 3420 9109 3423 9106 3434 9105
      3435 9100 3447 9100 3448 9105 3465 9105
      3464 9056 3456 9057 3455 8971 3417 8973
      3418 8992 3416 9013 3415 9014 3413 9022
      3412 9110

$$
2 follow-up statements
757 
WGUS74 KMEG 250313
FFSMEG

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MEMPHIS TN
913 PM CST THU FEB 24 2011

ARC107-MSC027-119-143-250322-
/O.CAN.KMEG.FF.W.0021.000000T0000Z-110225T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
PHILLIPS AR-TUNICA MS-COAHOMA MS-QUITMAN MS-
913 PM CST THU FEB 24 2011

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR QUITMAN...
COAHOMA...SOUTHERN TUNICA AND PHILLIPS COUNTIES...

THE HEAVY RAINFALL WHICH PROMPTED THE WARNING HAS DIMINISHED ACROSS
THE WARNED AREA. THUS THE FLASH FLOOD WARNING HAS BEEN CANCELLED.

.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 3427 9013 3432 9018 3454 9019 3455 8971
      3417 8974 3418 8992 3416 9013

$$

MSC107-250400-
/O.CON.KMEG.FF.W.0021.000000T0000Z-110225T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
PANOLA MS-
913 PM CST THU FEB 24 2011

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1000 PM CST FOR
PANOLA COUNTY...

AT 912 PM CST...DOPPLER RADAR ESTIMATES 1INCHES OF RAINFALL HAS 
OCCURRED OVER THE PAST 3 HOURS. SHOWERS AND THUNDERSTORMS WILL 
PRODUCE AN ADDITIONAL 1 TO 2 INCHES OF RAIN OVER THE NEXT 2 HOURS.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO BATESVILLE
AND JOHN W KYLE 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 3427 9013 3432 9018 3454 9019 3455 8971
      3417 8974 3418 8992 3416 9013

$$
858 
WGUS74 KMEG 250333
FFSMEG

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MEMPHIS TN
933 PM CST THU FEB 24 2011

MSC107-250343-
/O.CAN.KMEG.FF.W.0021.000000T0000Z-110225T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
PANOLA MS-
933 PM CST THU FEB 24 2011

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR PANOLA COUNTY...

THE HEAVY RAINFALL WHICH PROMPTED THE WARNING HAS DIMINISHED ACROSS
THE WARNED AREA. THUS THE FLASH FLOOD WARNING HAS BEEN CANCELLED.

.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 3427 9013 3432 9018 3454 9019 3455 8971
      3417 8974 3418 8992 3416 9013

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 24, 6:11 PM CSTSevere Thunderstorm WarningMEG49 min
Feb 24, 6:23 PM CSTSevere Thunderstorm WarningMEGBenton, DeSoto, Marshall, Tate90 days
Feb 24, 6:23 PM CSTSevere Thunderstorm WarningMEG52 min
Feb 24, 6:28 PM CSTSevere Thunderstorm WarningMEG47 min
Feb 24, 6:28 PM CSTSevere Thunderstorm WarningMEGDeSoto, Marshall90 days
Feb 24, 6:56 PM CSTFlash Flood WarningMEGDeSoto, Marshall, Tate, Tunica3 hr
Feb 24, 6:59 PM CSTSevere Thunderstorm WarningMEG46 min
Feb 24, 7:20 PM CSTSevere Thunderstorm WarningMEG40 min
Feb 24, 7:20 PM CSTSevere Thunderstorm WarningMEGBenton, Calhoun, DeSoto, Lafayette, Marshall, Tallahatchie and 3 more90 days
Feb 24, 7:26 PM CSTSevere Thunderstorm WarningMEG49 min
Feb 24, 7:26 PM CSTSevere Thunderstorm WarningMEGCoahoma, Panola, Quitman, Tallahatchie90 days
Feb 24, 7:31 PM CSTSevere Thunderstorm WarningMEG44 min
Feb 24, 7:50 PM CSTSevere Thunderstorm WarningMEG40 min
Feb 24, 7:50 PM CSTSevere Thunderstorm WarningMEGBenton, Lafayette, Marshall, Panola, Quitman, Tallahatchie and 3 more40 min
Feb 24, 7:58 PM CSTSevere Thunderstorm WarningMEG47 min
Feb 24, 7:58 PM CSTSevere Thunderstorm WarningMEG47 min
Feb 24, 7:58 PM CSTSevere Thunderstorm WarningMEGAlcorn, Benton, Marshall, Tate, Tippah47 min
Feb 24, 8:04 PM CSTFlash Flood WarningMEGAlcorn, Benton, Marshall, Tippah3 hr
Feb 24, 8:11 PM CSTSevere Thunderstorm WarningMEG19 min
Feb 24, 8:28 PM CSTSevere Thunderstorm WarningMEG47 min
Feb 24, 8:28 PM CSTSevere Thunderstorm WarningMEGBenton, Calhoun, Lafayette, Marshall, Pontotoc, Tippah and 2 more47 min
Feb 24, 8:34 PM CSTSevere Thunderstorm WarningMEG56 min
Feb 24, 8:34 PM CSTSevere Thunderstorm WarningMEGAlcorn, Benton, Prentiss, Tippah, Tishomingo56 min
Feb 24, 8:47 PM CSTFlash Flood WarningMEGAlcorn, Prentiss, Tishomingo3 hr
Feb 24, 8:55 PM CSTSevere Thunderstorm WarningMEG50 min
Feb 24, 8:55 PM CSTSevere Thunderstorm WarningMEGCalhoun, Chickasaw, Itawamba, Lee, Monroe, Pontotoc and 3 more50 min
Feb 24, 9:01 PM CSTFlash Flood WarningMEGCalhoun, Chickasaw, Itawamba, Lafayette, Lee, Marshall and 4 more116 min
Feb 24, 9:26 PM CSTTornado WarningMEGItawamba, Lee, Prentiss, Tishomingo, Union49 min
Feb 24, 9:30 PM CSTSevere Thunderstorm WarningMEG36 min
Feb 24, 9:30 PM CSTSevere Thunderstorm WarningMEGAlcorn, Prentiss, Tishomingo36 min
Feb 24, 9:41 PM CSTTornado WarningMEGItawamba, Lee24 min
Feb 24, 9:42 PM CSTSevere Thunderstorm WarningMEG33 min
Feb 24, 9:42 PM CSTSevere Thunderstorm WarningMEGItawamba, Lee, Tishomingo33 min
Feb 24, 9:43 PM CSTSevere Thunderstorm WarningMEG31 min
Feb 24, 9:43 PM CSTSevere Thunderstorm WarningMEGItawamba, Monroe31 min
Feb 24, 6:09 PM CSTTornado WarningMEGCrittenden, Cross, Lee, St. Francis36 min
Feb 24, 6:11 PM CSTSevere Thunderstorm WarningMEGMississippi90 days
Feb 24, 6:14 PM CSTTornado WarningMEGCraighead, Greene, Mississippi, Poinsett31 min
Feb 24, 6:34 PM CSTTornado WarningMEGCrittenden26 min
Feb 24, 6:38 PM CSTTornado WarningMEGMississippi52 min
Feb 24, 6:41 PM CSTFlash Flood WarningMEGMississippi3 hr
Feb 25, 6:40 AM CSTRiver Flood WarningMEGMississippi37 days
Feb 25, 1:37 PM CSTRiver Flood WarningMEGMississippi38 days

Nearby

Flash Flood Warnings in Mississippi, 2011Flash Flood Warnings in Arkansas, 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.