Alert archive / Mississippi / Flash Flood Warnings in 2012

Flash Flood Warning 142, NWS Jackson, MS

September 4, 2012Jones County, Mississippi

NWS Jackson, MS issued this flash flood warning at Sep 4, 2012, 3:27 PM CDT for Jones County, Mississippi. 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
Sep 4, 2012, 3:27 PM CDT (20:27 UTC)
Expired
Sep 4, 2012, 5:30 PM CDT
In force
2 hr
Issued by
NWS Jackson, MS
Area
Storm-based polygon
Flood severity
None

County Jones County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 116 km from the middle of the area, began a volume at 20:27 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

Jackson, MS (KJAN), launched 12:00Z, 8.5 hours before the alert went out and 125 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 12:00Z on 2012-09-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1867 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, Jackson, MS at 12:00Z on 2012-09-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 138 square meters per square second.193958Sfc1 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
1867 J/kg
Mixed-layer CIN
-105 J/kg
Mixed-layer LCL
774 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
138 m²/s²
0-3 km storm-relative helicity
201 m²/s²
Significant tornado parameter
0.7
Supercell composite
3.3

Open this sounding in Storm Lab

The text

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

715 
WGUS54 KJAN 042027
FFWJAN
MSC067-042230-
/O.NEW.KJAN.FF.W.0142.120904T2027Z-120904T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE JACKSON MS
327 PM CDT TUE SEP 4 2012

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EASTERN JONES COUNTY IN SOUTHEAST MISSISSIPPI...
  THIS INCLUDES THE CITY OF LAUREL...

* UNTIL 530 PM CDT

* AT 327 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED
  THUNDERSTORMS PRODUCING VERY HEAVY RAIN NEAR MILL CREEK...OR 8
  MILES EAST OF LAUREL. 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   
  SANDERSVILLE.

VERY HEAVY RAINFALL WILL CONTINUE OVER THE WARNED AREA FOR THE NEXT
TWO HOURS WITH AN ADDITIONAL ONE TO THREE INCHES 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 3144 8918 3181 8920 3182 8901 3182 8894
      3144 8894 3143 8895

$$

DL
2 follow-up statements
367 
WGUS74 KJAN 042134
FFSJAN

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
434 PM CDT TUE SEP 4 2012

MSC067-042230-
/O.CON.KJAN.FF.W.0142.000000T0000Z-120904T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
JONES MS-
434 PM CDT TUE SEP 4 2012

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 530 PM CDT FOR
EASTERN JONES COUNTY...

AT 433 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
DETECT THUNDERSTORMS PRODUCING VERY HEAVY RAIN OVER EASTERN JONES
COUNTY. THE STORMS WERE MOVING SOUTH AT AROUND 10 MPH. ESTIMATED
RADAR RAINFALL AMOUNTS...ON THE ORDER OF TWO TO FOUR INCHES...HAVE
OCCURRED IN THE PAST TWO HOURS.

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

VERY HEAVY RAINFALL WILL CONTINUE OVER THE WARNED AREA FOR THE NEXT
HOUR...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 3144 8918 3181 8920 3182 8901 3182 8894
      3144 8894 3143 8895

$$

DL
272 
WGUS74 KJAN 042229
FFSJAN

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
529 PM CDT TUE SEP 4 2012

MSC067-042236-
/O.EXP.KJAN.FF.W.0142.000000T0000Z-120904T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
JONES MS-
529 PM CDT TUE SEP 4 2012

...THE FLASH FLOOD WARNING WILL EXPIRE AT 530 PM CDT FOR EASTERN
JONES COUNTY...

THOUGH SOME MINOR RESIDUAL FLOODING MAY OCCUR ACROSS EASTERN PORTIONS
OF JONES COUNTY...MOST OF THE HEAVY RAINFALL HAS PUSHED OUT OF THE
AREA. THUS THE FLASH FLOOD WARNING WILL BE ALLOWED TO EXPIRE.

LAT...LON 3144 8918 3181 8920 3182 8901 3182 8894
      3144 8894 3143 8895

$$

DL

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 3, 10:24 PM CDTSpecial Weather StatementJANLowndes, Noxubee, Oktibbeha31 min
Sep 3, 11:01 PM CDTSevere Thunderstorm WarningJANNoxubee44 min
Sep 3, 11:25 PM CDTTornado WarningJANNoxubee35 min
Sep 3, 11:53 PM CDTSevere Thunderstorm WarningJANNoxubee37 min
Sep 4, 12:09 AM CDTFlash Flood WarningJANNoxubee, Oktibbeha2 hr
Sep 4, 12:31 AM CDTSpecial Weather StatementJANNoxubee29 min
Sep 4, 12:41 AM CDTSevere Thunderstorm WarningJANNoxubee, Winston49 min
Sep 4, 1:33 AM CDTSpecial Weather StatementJANNoxubee32 min
Sep 4, 2:41 PM CDTSpecial Weather StatementJANJones29 min
Sep 4, 3:14 PM CDTSpecial Weather StatementJANJones31 min
Sep 4, 3:45 PM CDTSevere Thunderstorm WarningJANJones45 min
Sep 4, 4:38 PM CDTSpecial Weather StatementJANForrest42 min
Sep 4, 5:22 PM CDTSpecial Weather StatementJANForrest58 min
Sep 4, 5:34 PM CDTSevere Thunderstorm WarningJANForrest, Jones41 min
Sep 4, 5:41 PM CDTSevere Thunderstorm WarningJANJones34 min
Sep 4, 6:09 PM CDTSevere Thunderstorm WarningJANForrest51 min
Sep 4, 6:36 PM CDTSevere Thunderstorm WarningJANRankin, Simpson, Smith39 min
Sep 4, 6:43 PM CDTSpecial Weather StatementJANCovington32 min

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.