Alert archive / Mississippi / Flash Flood Warnings in 2012

Flash Flood Warning 14, NWS Jackson, MS

February 18, 20126 counties in Mississippi

NWS Jackson, MS issued this flash flood warning at Feb 18, 2012, 3:28 PM CST for 6 counties in Mississippi. It was in force for 3 hr. 3 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
Feb 18, 2012, 3:28 PM CST (21:28 UTC)
Expired
Feb 18, 2012, 6:30 PM CST
In force
3 hr
Issued by
NWS Jackson, MS
Area
Storm-based polygon
Flood severity
None

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

What was reported inside it

TimeReportWhereRemark
Feb 18, 3:30 PM CSTFLASH FLOOD3 Sse Kokomo, MSWATER WAS FLOWING OVER KNOXO COLUMBIA RD
Feb 18, 3:30 PM CSTFLASH FLOODColumbia, MSSEVERAL ROADS REMAIN UNDERWATER ACROSS MARION COUNTY. AT LEAST TWO ROADS HAVE BEEN DAMAGED OR WASHED OUT. ROAD CONDITIONS ARE GENERALLY IMPROVING WITHIN THE COLUMBIA CITY LIMITS.
Feb 18, 3:40 PM CSTFLASH FLOODSanford, MSROAD CLOSURE AT OLD HIGHWAY 49 AT ORANGE SANFORD ROAD AND CROSBY ROAD DUE TO FLOODING.

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

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 9.5 hours before the alert went out and 113 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 2012-02-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 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 2012-02-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 160 square meters per square second.1939587897117Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
449 m above ground
0-6 km bulk shear
57 kt
0-1 km storm-relative helicity
160 m²/s²
0-3 km storm-relative helicity
177 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.

723 
WGUS54 KJAN 182128
FFWJAN
MSC031-035-065-067-073-091-190030-
/O.NEW.KJAN.FF.W.0014.120218T2128Z-120219T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE JACKSON MS
328 PM CST SAT FEB 18 2012

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

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

* UNTIL 630 PM CST

* AT 328 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED
  THUNDERSTORMS PRODUCING VERY HEAVY RAIN ALONG A LINE EXTENDING FROM
  MACEDONIA TO MCLAURIN...OR ALONG A LINE EXTENDING FROM PETAL TO 11
  MILES SOUTH OF HATTIESBURG...MOVING EAST AT 15 MPH. ESTIMATED RADAR
  RAINFALL AMOUNTS...ON THE ORDER OF ONE TO THREE INCHES...HAVE
  OCCURRED IN THE PAST TWO HOURS.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  MAXIE...BROOKLYN...TUCKERS CROSSING...OVETT...SANDERSVILLE AND MILL
  CREEK

VERY HEAVY RAINFALL WILL CONTINUE OVER THE WARNED AREA FOR THE NEXT
THREE 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 8935 3100 8941 3097 8944 3101 8951
      3100 8983 3106 8984 3107 8992 3112 8994
      3113 8997 3133 9005 3139 9004 3139 8996
      3162 8997 3186 8871 3184 8869 3181 8894
      3144 8894 3143 8914 3090 8915 3091 8934

$$

JC
1 follow-up statement
153 
WGUS74 KJAN 182310
FFSJAN

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
510 PM CST SAT FEB 18 2012

MSC031-035-065-067-073-091-190030-
/O.CON.KJAN.FF.W.0014.000000T0000Z-120219T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MARION MS-LAMAR MS-JONES MS-JEFFERSON DAVIS MS-FORREST MS-
COVINGTON MS-
510 PM CST SAT FEB 18 2012

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 630 PM CST FOR
COVINGTON...FORREST...JEFFERSON DAVIS...JONES...LAMAR AND MARION
COUNTIES...

AT 510 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
DETECT SHOWERS PRODUCING MODERATE RAIN ALONG A LINE EXTENDING 
FROM MACEDONIA TO MCLAURIN...OR ALONG A LINE EXTENDING FROM PETAL TO 
11 MILES WEST OF NEW AUGUSTA. THE STORMS WERE NEARLY STATIONARY. 
ESTIMATED RADAR RAINFALL AMOUNTS...ON THE ORDER OF ONE TO THREE 
INCHES...HAVE OCCURRED IN THE PAST HOUR.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
MELBA...SOCIETY HILL...PROGRESS...CARSON...LONE STAR...SANFORD...MILL
CREEK...TUCKERS CROSSING...MOSELLE...OVETT...EASTABUCHIE...RAWLS
SPRINGS...SUNRISE...MORGANTOWN...HOLLY SPRINGS...GOSS...BUNKER
HILL...IMPROVE...WEST HATTIESBURG...SUMRALL...SANDERSVILLE...
PRENTISS...LAUREL...HATTIESBURG...ELLISVILLE...COLUMBIA AND COLLINS

THE HEAVIEST RAINFALL HAS SLACKED OFF BUT LIGHT TO MODERATE 
RAINFALL WILL CONTINUE OVER THE WARNED AREA FOR THE NEXT TWO HOURS. 
WITH AN ADDITIONAL 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 3091 8934 3100 8935 3100 8942 3097 8944
      3101 8951 3100 8983 3107 8985 3107 8992
      3112 8994 3113 8997 3133 9005 3138 9003
      3139 8996 3162 8996 3181 8894 3144 8894
      3143 8914 3090 8915

$$

JC

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 18, 11:40 AM CSTFlash Flood WarningJANForrest, Lamar, Marion4 hr
Feb 18, 12:44 PM CSTSevere Thunderstorm WarningJANForrest46 min
Feb 18, 1:21 PM CSTFlash Flood WarningJANClarke, Lauderdale114 min
Feb 18, 1:49 PM CSTSpecial Weather StatementJANJones66 min
Feb 18, 1:50 PM CSTSpecial Weather StatementJANAdams, Jefferson25 min
Feb 18, 3:02 PM CSTRiver Flood WarningJANCopiah, Simpson5 days
Feb 18, 3:02 PM CSTRiver Flood WarningJANLawrence5 days
Feb 18, 3:02 PM CSTRiver Flood WarningJANMarion4 days

Nearby

Flash Flood Warnings in Mississippi, 2012Every flash flood warning in 2012

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.