Alert archive / Mississippi / Flash Flood Warnings in 2014

Flash Flood Warning 101, NWS Jackson, MS

August 11, 20145 counties in Mississippi

NWS Jackson, MS issued this flash flood warning at Aug 11, 2014, 12:03 PM CDT for 5 counties in Mississippi. It was in force for 117 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
Aug 11, 2014, 12:03 PM CDT (17:03 UTC)
Expired
Aug 11, 2014, 2:00 PM CDT
In force
117 min
Issued by
NWS Jackson, MS
Area
Storm-based polygon
Flood severity
None

Counties Hinds County, MS, Leake County, MS, Madison County, MS, Rankin County, MS, Scott County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 20 km from the middle of the area, began a volume at 17:05 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, 5.1 hours before the alert went out and 19 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 2014-08-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 307 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 2014-08-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 34 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
307 J/kg
Mixed-layer CIN
-121 J/kg
Mixed-layer LCL
1006 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
34 m²/s²
0-3 km storm-relative helicity
72 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.

992 
WGUS54 KJAN 111703
FFWJAN
MSC049-079-089-121-123-111900-
/O.NEW.KJAN.FF.W.0101.140811T1703Z-140811T1900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE JACKSON MS
1203 PM CDT MON AUG 11 2014

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHERN HINDS COUNTY IN CENTRAL MISSISSIPPI...
  THIS INCLUDES THE CITIES OF...JACKSON...CLINTON...
  SOUTHWESTERN LEAKE COUNTY IN CENTRAL MISSISSIPPI...
  SOUTHERN MADISON COUNTY IN CENTRAL MISSISSIPPI...
  THIS INCLUDES THE CITIES OF...RIDGELAND...MADISON...CANTON...
  NORTHERN RANKIN COUNTY IN CENTRAL MISSISSIPPI...
  THIS INCLUDES THE CITIES OF...PEARL...FLOWOOD...BRANDON...
  SCOTT COUNTY IN CENTRAL MISSISSIPPI...
  THIS INCLUDES THE CITIES OF...HARPERVILLE...MORTON...FOREST...

* UNTIL 200 PM CDT

* AT 1203 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  FLASH FLOODING FROM THUNDERSTORMS OVER THE WARNED AREA. ESTIMATED
  RADAR RAINFALL AMOUNTS...ON THE ORDER OF TWO TO FOUR INCHES...HAVE
  OCCURRED IN THE PAST TWO HOURS.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  ANNANDALE...GLUCKSTADT...LUDLOW...HILLSBORO...STEELE AND FLORA

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 ONE TO THREE INCHES A HOUR CAN CAUSE FLOODING
ON WOODGATE DRIVE NEAR THE CROSSGATES SWIM CLUB.

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 3228 8959 3224 8983 3225 9041 3233 9058
      3248 9057 3259 9044 3258 9040 3265 9028
      3266 8995 3262 8968 3253 8932 3251 8932
      3235 8932

$$

JA
1 follow-up statement
387 
WGUS74 KJAN 111819
FFSJAN

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
119 PM CDT MON AUG 11 2014

MSC049-079-089-121-123-111824-
/O.CAN.KJAN.FF.W.0101.000000T0000Z-140811T1900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SCOTT MS-RANKIN MS-MADISON MS-LEAKE MS-HINDS MS-
119 PM CDT MON AUG 11 2014

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR NORTHERN HINDS...
SOUTHWESTERN LEAKE...SOUTHERN MADISON...NORTHERN RANKIN AND SCOTT
COUNTIES...

TORRENTIAL DOWNPOURS HAVE SHIFTED TO THE SOUTH OF THE PREVIOUSLY 
WARNED AREA MORE QUICKLY THAN ANTICIPATED. THERE COULD BE A FEW 
SPOTS OF HIGH WATER FOR THE NEXT HOUR ALTHOUGH FLASH FLOODING IS NOT 
ANTICIPATED AT THIS TIME.

LAT...LON 3228 8959 3224 8983 3225 9041 3233 9058
      3248 9057 3259 9044 3258 9040 3265 9028
      3266 8995 3262 8968 3253 8932 3251 8932
      3235 8932

$$

BYB

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 10, 7:06 PM CDTSevere Thunderstorm WarningJANLauderdale39 min
Aug 10, 7:18 PM CDTSpecial Weather StatementJANSmith47 min
Aug 10, 7:21 PM CDTFlash Flood WarningJANLauderdale114 min
Aug 10, 7:48 PM CDTFlash Flood WarningJANJasper, Newton117 min
Aug 10, 8:02 PM CDTSpecial Weather StatementJANClarke28 min
Aug 11, 7:57 AM CDTFlash Flood WarningJANBolivar, Leflore, Sunflower3 hr
Aug 11, 11:11 AM CDTSpecial Weather StatementJANScott29 min
Aug 11, 12:59 PM CDTSpecial Weather StatementJANCopiah, Jasper, Simpson, Smith61 min
Aug 11, 1:01 PM CDTSpecial Weather StatementJANClaiborne, Jefferson44 min
Aug 11, 1:41 PM CDTSpecial Weather StatementJANClarke, Jones44 min
Aug 11, 1:44 PM CDTSpecial Weather StatementJANLawrence, Lincoln51 min
Aug 11, 2:18 PM CDTSpecial Weather StatementJANForrest, Lamar, Marion77 min
Aug 11, 4:06 PM CDTFlash Flood WarningJANAdams, Franklin, Jefferson114 min

Nearby

Flash Flood Warnings in Mississippi, 2014Every flash flood warning in 2014

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.