Alert archive / Mississippi / Flash Flood Warnings in 2011

Flash Flood Warning 113, NWS Jackson, MS

July 24, 20114 counties in Mississippi

NWS Jackson, MS issued this flash flood warning at Jul 24, 2011, 2:37 PM CDT for 4 counties in Mississippi. It was in force for 113 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jul 24, 2011, 2:37 PM CDT (19:37 UTC)
Expired
Jul 24, 2011, 4:30 PM CDT
In force
113 min
Issued by
NWS Jackson, MS
Area
Storm-based polygon
Flood severity
None

Counties Covington County, MS, Jefferson Davis County, MS, Lamar County, MS, Marion County, MS

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 7.6 hours before the alert went out and 112 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, Slidell Radar S, LA at 12:00Z on 2011-07-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2135 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, Slidell Radar S, LA at 12:00Z on 2011-07-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -13 square meters per square second.1939Sfc1 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
2135 J/kg
Mixed-layer CIN
-8 J/kg
Mixed-layer LCL
587 m above ground
0-6 km bulk shear
4 kt
0-1 km storm-relative helicity
-13 m²/s²
0-3 km storm-relative helicity
28 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.

226 
WGUS54 KJAN 241937
FFWJAN
MSC031-065-073-091-242130-
/O.NEW.KJAN.FF.W.0113.110724T1937Z-110724T2130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE JACKSON MS
237 PM CDT SUN JUL 24 2011

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHEASTERN JEFFERSON DAVIS COUNTY IN SOUTH CENTRAL MISSISSIPPI...
  MARION COUNTY IN SOUTH CENTRAL MISSISSIPPI...
  THIS INCLUDES THE CITIES OF...SANDY HOOK...COLUMBIA...
  SOUTHEASTERN COVINGTON COUNTY IN SOUTHEAST MISSISSIPPI...
  LAMAR COUNTY IN SOUTHEAST MISSISSIPPI...
  THIS INCLUDES THE CITY OF WEST HATTIESBURG...

* UNTIL 430 PM CDT

* AT 234 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED
  THUNDERSTORMS PRODUCING VERY HEAVY RAIN NEAR IMPROVE...OR 12 MILES
  EAST OF COLUMBIA...MOVING SOUTHEAST AT 20 MPH. ESTIMATED RADAR
  RAINFALL AMOUNTS...ON THE ORDER OF ONE TO THREE INCHES...HAVE      
  OCCURRED IN THE PAST HOUR ACROSS PORTIONS OF COVINGTON COUNTY AS   
  WELL AS SOUTHERN MARION AND LAMAR COUNTIES. 

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  PICKWICK...PINEBUR...BAXTERVILLE...PURVIS AND LUMBERTON

VERY HEAVY RAINFALL WILL CONTINUE OVER THE WARNED AREA FOR THE NEXT
TWO HOURS WITH AN ADDITIONAL ONE TO THREE INCHES POSSIBLE.

RAINFALL AMOUNTS FROM TWO TO FOUR INCHES IN A HOUR CAN CAUSE FLOODING
IN AND AROUND THE WESTERN PORTIONS OF HATTIESBURG IN NORTHEAST LAMAR
COUNTY. SOME OF THE ROADS THAT FLOOD WITH THIS AMOUNT OF RAINFALL
INCLUDE SAM RAYBURN ROAD...CLEARANCE RAY DRIVE...RUBY CIRCLE AND
RAYBURN PLACE. IN ADDITION TO MANY OTHER LOCATIONS ALONG MIXON CREEK
BEHIND TURTLE CREEK MALL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE WATER COVERS THE ROADWAY. WHEN ENCOUNTERING FLOODED ROADS
MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.

&&

LAT...LON 3100 8984 3107 8985 3107 8992 3147 8988
      3160 8940 3143 8940 3143 8945 3135 8945
      3134 8936 3101 8935

$$

JC
1 follow-up statement
142 
WGUS74 KJAN 242059
FFSJAN

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
359 PM CDT SUN JUL 24 2011

MSC031-065-242109-
/O.CAN.KJAN.FF.W.0113.000000T0000Z-110724T2130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
JEFFERSON DAVIS MS-COVINGTON MS-
359 PM CDT SUN JUL 24 2011

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR SOUTHEASTERN
COVINGTON AND SOUTHEASTERN JEFFERSON DAVIS COUNTIES...

LAT...LON 3107 8985 3107 8992 3139 8989 3139 8982
      3143 8982 3143 8945 3135 8945 3134 8937
      3101 8935 3100 8984

$$

MSC073-091-242130-
/O.CON.KJAN.FF.W.0113.000000T0000Z-110724T2130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MARION MS-LAMAR MS-
359 PM CDT SUN JUL 24 2011

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 430 PM CDT FOR LAMAR
AND MARION COUNTIES...

AT 359 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
DETECT AN AREA OF HEAVY RAIN NEAR IMPROVE...AND ACROSS MOST OF LAMAR 
COUNTY. THIS ACTIVITY WAS NEARLY STATIONARY. ESTIMATED RADAR 
RAINFALL AMOUNTS...ON THE ORDER OF TWO TO THREE INCHES...HAVE 
OCCURRED IN THE PAST HOUR.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO GOSS...
BUNKER HILL AND SUMRALL

RAINFALL WILL CONTINUE OVER THE WARNED AREA FOR THE NEXT HOUR. WITH 
AN ADDITIONAL HALF TO ONE INCH POSSIBLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE WATER COVERS THE ROADWAY. WHEN ENCOUNTERING FLOODED ROADS
MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.

&&

LAT...LON 3107 8985 3107 8992 3139 8989 3139 8982
      3143 8982 3143 8945 3135 8945 3134 8937
      3101 8935 3100 8984

$$

CME

The office that day

Everything else NWS Jackson, MS issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 24, 9:05 AM CDTFlash Flood WarningJANClarke, Jasper, Lauderdale, Newton115 min
Jul 24, 10:38 AM CDTFlash Flood WarningJANKemper112 min
Jul 24, 10:57 AM CDTFlash Flood WarningJANLauderdale108 min
Jul 24, 11:47 AM CDTSpecial Weather StatementJANForrest43 min
Jul 24, 12:00 PM CDTFlash Flood WarningJANForrest, Lamar2 hr
Jul 24, 1:21 PM CDTSpecial Weather StatementJANJones39 min
Jul 24, 1:45 PM CDTSpecial Weather StatementJANLamar40 min
Jul 24, 2:01 PM CDTSpecial Weather StatementJANClay29 min
Jul 24, 2:42 PM CDTSpecial Weather StatementJANHumphreys43 min
Jul 24, 3:54 PM CDTSpecial Weather StatementJANLawrence26 min
Jul 24, 5:01 PM CDTSpecial Weather StatementJANMadison44 min
Jul 24, 5:16 PM CDTSpecial Weather StatementJANChoctaw44 min
Jul 24, 5:37 PM CDTFlash Flood WarningJANChoctaw, Winston66 min
Jul 24, 6:20 PM CDTSpecial Weather StatementJANMontgomery40 min
Jul 24, 6:58 PM CDTFlash Flood WarningJANMontgomery82 min

Nearby

Flash Flood Warnings in Mississippi, 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.