Alert archive / Mississippi / Flash Flood Warnings in 2012

Flash Flood Warning 72, NWS Jackson, MS

July 7, 20126 counties in Mississippi

NWS Jackson, MS issued this flash flood warning at Jul 7, 2012, 5:41 PM CDT for 6 counties in Mississippi. It was in force for 76 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 7, 2012, 5:41 PM CDT (22:41 UTC)
Expired
Jul 7, 2012, 6:57 PM CDT
In force
76 min
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

The radar

The Jackson/Brandon,MS radar (KDGX), 107 km from the middle of the area, began a volume at 22:42 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, 10.7 hours before the alert went out and 115 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 2012-07-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 814 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 2012-07-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 33 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
814 J/kg
Mixed-layer CIN
-92 J/kg
Mixed-layer LCL
1081 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
33 m²/s²
0-3 km storm-relative helicity
54 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.

514 
WGUS54 KJAN 072241
FFWJAN
MSC031-035-065-067-073-091-080045-
/O.NEW.KJAN.FF.W.0072.120707T2241Z-120708T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE JACKSON MS
541 PM CDT SAT JUL 7 2012

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHEASTERN JEFFERSON DAVIS COUNTY IN SOUTH CENTRAL MISSISSIPPI...
  NORTHEASTERN MARION COUNTY IN SOUTH CENTRAL MISSISSIPPI...
  SOUTHEASTERN COVINGTON COUNTY IN SOUTHEAST MISSISSIPPI...
  NORTHWESTERN FORREST COUNTY IN SOUTHEAST MISSISSIPPI...
  THIS INCLUDES THE CITIES OF...PETAL...HATTIESBURG...
  SOUTHWESTERN JONES COUNTY IN SOUTHEAST MISSISSIPPI...
  NORTHERN LAMAR COUNTY IN SOUTHEAST MISSISSIPPI...
  THIS INCLUDES THE CITY OF WEST HATTIESBURG...

* UNTIL 745 PM CDT

* AT 540 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED    
  THUNDERSTORMS PRODUCING VERY HEAVY RAIN FROM NEAR COLUMBIA TO      
  SUMRALL TO JUST NORTH OF HATTIESBURG 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...SANFORD...MOSELLE AND EASTABUCHIE

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 3151 8970 3154 8918 3124 8927 3123 8969

$$

EEC
2 follow-up statements
847 
WGUS74 KJAN 072330
FFSJAN

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
630 PM CDT SAT JUL 7 2012

MSC031-065-067-091-072339-
/O.CAN.KJAN.FF.W.0072.000000T0000Z-120708T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MARION MS-JONES MS-JEFFERSON DAVIS MS-COVINGTON MS-
630 PM CDT SAT JUL 7 2012

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR SOUTHEASTERN
COVINGTON...SOUTHEASTERN JEFFERSON DAVIS...SOUTHWESTERN JONES AND
NORTHEASTERN MARION COUNTIES...

LAT...LON 3142 8965 3143 8926 3130 8934 3124 8965

$$

MSC035-073-080045-
/O.CON.KJAN.FF.W.0072.000000T0000Z-120708T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
LAMAR MS-FORREST MS-
630 PM CDT SAT JUL 7 2012

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 745 PM CDT FOR
NORTHWESTERN FORREST AND NORTHERN LAMAR COUNTIES...

AT 629 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
DETECT THUNDERSTORMS PRODUCING HEAVY RAIN OVER NORTHWEST FORREST AND 
NORTHERN LAMAR COUNTIES. THE STORMS WERE NEARLY STATIONARY. ESTIMATED
RADAR RAINFALL AMOUNTS...ON THE ORDER OF TWO TO FOUR INCHES...HAVE 
OCCURRED IN THE PAST TWO HOURS.

ADDITIONAL HEAVY RAINFALL OF UP TO ONE INCH IS POSSIBLE OVER THE 
WARNED AREA FOR THE NEXT HOUR.

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 3142 8965 3143 8926 3130 8934 3124 8965

$$

EEC
452 
WGUS74 KJAN 072357
FFSJAN

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
657 PM CDT SAT JUL 7 2012

MSC035-073-072359-
/O.CAN.KJAN.FF.W.0072.000000T0000Z-120708T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
LAMAR MS-FORREST MS-
657 PM CDT SAT JUL 7 2012

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR NORTHWESTERN
FORREST AND NORTHERN LAMAR COUNTIES...

THUNDERSTORMS HAVE DIMINISHED AND RAINFALL RATES HAVE DECREASED 
GREATLY...THUS THE FLASH FLOOD WARNING HAS BEEN CANCELLED.

LAT...LON 3142 8965 3143 8926 3130 8934 3124 8965

$$

EEC

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 6, 7:24 PM CDTSpecial Weather StatementJANNeshoba31 min
Jul 6, 7:49 PM CDTSpecial Weather StatementJANNeshoba31 min
Jul 6, 8:24 PM CDTSpecial Weather StatementJANNeshoba31 min
Jul 6, 8:36 PM CDTSpecial Weather StatementJANLauderdale29 min
Jul 6, 8:38 PM CDTSpecial Weather StatementJANLauderdale42 min
Jul 6, 8:39 PM CDTSpecial Weather StatementJANLauderdale41 min
Jul 7, 2:00 PM CDTSpecial Weather StatementJANLauderdale30 min
Jul 7, 2:02 PM CDTSpecial Weather StatementJANSimpson28 min
Jul 7, 2:04 PM CDTSpecial Weather StatementJANSimpson31 min
Jul 7, 2:33 PM CDTSpecial Weather StatementJANCovington32 min
Jul 7, 2:35 PM CDTSpecial Weather StatementJANSmith30 min
Jul 7, 2:55 PM CDTSpecial Weather StatementJANSimpson30 min
Jul 7, 2:57 PM CDTSpecial Weather StatementJANLawrence28 min
Jul 7, 2:58 PM CDTSpecial Weather StatementJANFranklin32 min
Jul 7, 3:05 PM CDTSevere Thunderstorm WarningJANLawrence15 min
Jul 7, 3:24 PM CDTSpecial Weather StatementJANCovington31 min
Jul 7, 3:49 PM CDTSpecial Weather StatementJANLincoln31 min
Jul 7, 3:55 PM CDTSpecial Weather StatementJANScott30 min
Jul 7, 4:06 PM CDTSpecial Weather StatementJANLincoln29 min
Jul 7, 4:15 PM CDTSevere Thunderstorm WarningJANCopiah, Franklin, Jefferson, Lincoln30 min
Jul 7, 4:32 PM CDTSpecial Weather StatementJANCovington28 min
Jul 7, 4:48 PM CDTSpecial Weather StatementJANJefferson27 min
Jul 7, 5:04 PM CDTSpecial Weather StatementJANRankin31 min
Jul 7, 5:06 PM CDTSpecial Weather StatementJANHinds29 min
Jul 7, 5:13 PM CDTSpecial Weather StatementJANClaiborne32 min
Jul 7, 5:25 PM CDTSpecial Weather StatementJANSimpson30 min
Jul 7, 5:55 PM CDTSpecial Weather StatementJANHinds30 min
Jul 7, 6:37 PM CDTSpecial Weather StatementJANWarren28 min
Jul 7, 6:54 PM CDTSpecial Weather StatementJANYazoo31 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.