Alert archive / Mississippi / Flash Flood Warnings in 2012

Flash Flood Warning 10, NWS Jackson, MS

February 15, 2012Adams County, Claiborne County, Jefferson County, Mississippi; Concordia Parish, Tensas Parish, Louisiana

NWS Jackson, MS issued this flash flood warning at Feb 15, 2012, 8:06 PM CST for Adams County, Claiborne County, Jefferson County, Mississippi; Concordia Parish, Tensas Parish, Louisiana. It was in force for 114 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
Feb 15, 2012, 8:06 PM CST (02:06 UTC)
Expired
Feb 15, 2012, 10:00 PM CST
In force
114 min
Issued by
NWS Jackson, MS
Area
Storm-based polygon
Flood severity
None

Counties Concordia Parish, LA, Tensas Parish, LA, Adams County, MS, Claiborne County, MS, Jefferson County, MS

The nearest sounding before it

Jackson, MS (KJAN), launched 00:00Z, 2.1 hours before the alert went out and 173 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, Jackson, MS at 00:00Z on 2012-02-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Jackson, MS at 00:00Z on 2012-02-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 329 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
993 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
329 m²/s²
0-3 km storm-relative helicity
329 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.1

Open this sounding in Storm Lab

The text

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

857 
WGUS54 KJAN 160206
FFWJAN
LAC029-107-MSC001-021-063-160400-
/O.NEW.KJAN.FF.W.0010.120216T0206Z-120216T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE JACKSON MS
806 PM CST WED FEB 15 2012

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CONCORDIA PARISH IN NORTHEAST LOUISIANA...
  THIS INCLUDES THE CITIES OF...MONTEREY...VIDALIA...FERRIDAY...
  SOUTHERN TENSAS PARISH IN NORTHEAST LOUISIANA...
  ADAMS COUNTY IN SOUTHWEST MISSISSIPPI...
  THIS INCLUDES THE CITY OF NATCHEZ...
  EXTREME WEST CENTRAL CLAIBORNE COUNTY IN SOUTHWEST MISSISSIPPI...
  WESTERN JEFFERSON COUNTY IN SOUTHWEST MISSISSIPPI...

* UNTIL 1000 PM CST

* AT 806 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED
  THUNDERSTORMS PRODUCING VERY HEAVY RAIN NEAR NATCHEZ. THE STORMS
  WERE NEARLY STATIONARY. 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
  SPOKANE...FROGMORE...HELENA...CHURCH HILL...STANTON...PINE RIDGE...
  WEST FERRIDAY...WATERPROOF...ST. JOSEPH AND CLAYTON

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

RAINFALL AMOUNTS FROM ONE TO THREE INCHES A HOUR CAN CAUSE FLOODING
IN THE FOLLOWING AREAS NEAR NATCHEZ: LIBERTY ROAD...PASSBACK ROAD
EAST...AND LOWER WOODVILLE SOUTH. THE FOLLOWING COUNTY ROADS FLOOD:
QUITMAN ROAD...ANNAS BOTTOM ROAD...HORSHOE DRIVE IN NORTHWEST ADAMS
COUNTY...AND BURKES ROAD IN SOUTHWEST ADAMS COUNTY.

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 3138 9185 3138 9178 3141 9185 3148 9182
      3144 9181 3144 9172 3146 9173 3149 9180
      3151 9178 3162 9176 3164 9171 3174 9169
      3173 9163 3176 9159 3172 9154 3182 9157
      3204 9114 3138 9115 3132 9139 3131 9187

$$

JA
1 follow-up statement
363 
WGUS74 KJAN 160233
FFSJAN

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
833 PM CST WED FEB 15 2012

LAC029-107-MSC001-021-063-160400-
/O.CON.KJAN.FF.W.0010.000000T0000Z-120216T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ADAMS MS-JEFFERSON MS-CLAIBORNE MS-TENSAS LA-CONCORDIA LA-
833 PM CST WED FEB 15 2012

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1000 PM CST FOR WEST
CENTRAL CLAIBORNE...WESTERN JEFFERSON AND ADAMS COUNTIES...AND
CONCORDIA AND SOUTHERN TENSAS PARISHES...

AT 831 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
THAT HOURLY RAINFALL RATES HAVE TAPERED OFF TO LESS THAN ONE HALF 
INCH PER HOUR ACROSS THE WARNED AREA. ESTIMATED RADAR RAINFALL 
AMOUNTS...ON THE ORDER OF TWO INCHES...HAVE OCCURRED IN THE PAST 
THREE HOURS. LOW-LYING AREAS WILL STILL BE PRONE TO EXCESSIVE 
RUN-OFF OVER THE NEXT HOUR ACROSS AFFECTED AREAS AS RAIN CONTINUES 
TO TAPER OFF. 

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
SPOKANE...HELENA...CHURCH HILL...STANTON...PINE RIDGE...WEST
FERRIDAY...WATERPROOF...VIDALIA...ST. JOSEPH...FERRIDAY AND CLAYTON

RAINFALL AMOUNTS FROM ONE TO THREE INCHES AN HOUR CAN CAUSE FLOODING
IN THE FOLLOWING AREAS NEAR NATCHEZ: LIBERTY ROAD...PASSBACK ROAD
EAST...AND LOWER WOODVILLE SOUTH. THE FOLLOW COUNTY ROADS FLOOD:
QUITMAN ROAD...ANNAS BOTTOM ROAD...AND HORSHOE DRIVE IN NORTHWEST
ADAMS COUNTY...AND BURKE'S ROAD IN SOUTHWEST ADAMS COUNTY.

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 3138 9185 3138 9178 3141 9185 3148 9182
      3144 9181 3144 9172 3146 9173 3149 9180
      3151 9178 3162 9176 3164 9171 3174 9169
      3173 9163 3176 9159 3172 9154 3182 9157
      3204 9114 3138 9115 3132 9139 3131 9187

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 15, 6:04 PM CSTSpecial Weather StatementJANClaiborne, Jefferson, Warren56 min
Feb 15, 7:25 PM CSTSpecial Weather StatementJANAdams30 min
Feb 15, 7:41 PM CSTTornado WarningJANAdams, Franklin34 min
Feb 15, 8:12 PM CSTSevere Thunderstorm WarningJANFranklin, Lincoln48 min
Feb 15, 8:56 PM CSTSevere Thunderstorm WarningJANLawrence, Lincoln39 min
Feb 15, 9:20 PM CSTSevere Thunderstorm WarningJANCovington, Jefferson Davis, Lamar, Marion55 min
Feb 15, 9:59 PM CSTSpecial Weather StatementJANForrest, Jones, Lamar41 min
Feb 15, 6:19 PM CSTSpecial Weather StatementJANConcordia31 min

Nearby

Flash Flood Warnings in Mississippi, 2012Flash Flood Warnings in Louisiana, 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; the sounding from the Mesonet's radiosonde archive.