Alert archive / Mississippi / Flash Flood Warnings in 2011

Flash Flood Warning 22, NWS Mobile, AL

June 7, 2011Washington County, Alabama; Greene County, Wayne County, Mississippi

NWS Mobile, AL issued this flash flood warning at Jun 7, 2011, 5:35 PM CDT for Washington County, Alabama; Greene County, Wayne County, Mississippi. It was in force for 4 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
Jun 7, 2011, 5:35 PM CDT (22:35 UTC)
Expired
Jun 7, 2011, 9:30 PM CDT
In force
4 hr
Issued by
NWS Mobile, AL
Area
Storm-based polygon
Flood severity
None

Counties Washington County, AL, Greene County, MS, Wayne County, MS

The radar

The Mobile radar (KMOB), 85 km from the middle of the area, began a volume at 22:36 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

Slidell Radar S, LA (KSIL), launched 12:00Z, 10.6 hours before the alert went out and 175 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 2011-06-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 639 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 2011-06-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 30 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
639 J/kg
Mixed-layer CIN
-166 J/kg
Mixed-layer LCL
1521 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
30 m²/s²
0-3 km storm-relative helicity
53 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.

405 
WGUS54 KMOB 072235
FFWMOB
ALC129-MSC041-153-080230-
/O.NEW.KMOB.FF.W.0022.110607T2235Z-110608T0230Z/
/00000.0.RS.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOBILE AL
535 PM CDT TUE JUN 7 2011

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHEASTERN GREENE COUNTY IN SOUTHEAST MISSISSIPPI...
  SOUTHEASTERN WAYNE COUNTY IN SOUTHEAST MISSISSIPPI...
  WEST CENTRAL WASHINGTON COUNTY IN SOUTHWEST ALABAMA...
  THIS INCLUDES THE CITY OF CHATOM...

* UNTIL 930 PM CDT

* AT 527 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED VERY HEAVY
  RAIN FROM A THUNDERSTORM OVER THE WARNED AREA. THE STORM           
  INDICATED VERY LITTLE MOVEMENT AND CONTINUED TO DEVELOP REPEATEDLY 
  TO THE SOUTHWEST.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO STATE LINE

ADDITIONAL RAINFALL AMOUNTS OF THREE INCHES ARE POSSIBLE IN THE 
WARNED AREA....FOR A TOTAL OF THREE TO SIX INCHES LOCALLY.

MORE STATEMENTS WILL FOLLOW ON THIS TORRENTIAL RAINFALL PRODUCING 
STORM.

TO REPORT FLASH FLOODING TO YOUR NATIONAL WEATHER SERVICE...CALL TOLL
FREE AT 1 8 7 7 6 3 3 6 7 7 2.

LAT...LON 3144 8869 3156 8862 3159 8838 3146 8822
      3128 8819 3127 8841 3133 8858

$$
2 follow-up statements
632 
WGUS74 KMOB 072255
FFSMOB

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
555 PM CDT TUE JUN 7 2011

ALC129-MSC041-153-080230-
/O.CON.KMOB.FF.W.0022.000000T0000Z-110608T0230Z/
/00000.0.RS.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WASHINGTON AL-GREENE MS-WAYNE MS-
555 PM CDT TUE JUN 7 2011

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 930 PM CDT FOR
SOUTHEASTERN WAYNE...NORTHEASTERN GREENE AND WEST CENTRAL WASHINGTON
COUNTIES...

AT 545 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A THUNDERSTORM PRODUCING VERY HEAVY RAIN OVER A LARGE PART 
OF WESTERN WASHINGTON COUNTY ALABAMA AND SOUTHEAST WAYNE COUNTY AS 
WELL AS NORTHEAST GREENE COUNTY OF MISSISSIPPI.  NOT ONLY ARE THE 
HEAVY RAINS ONGOING CURRENTLY IN THESE LOCATIONS...YET ANOTHER LINE 
OF THUNDERSTORMS ARE APPROACHING FORM THE EAST AND MAY DUMP ANOTHER 
TWO TO THREE INCHES OF RAIN FOR A TOTAL OF FIVE TO EIGHT INCHES OF 
RAIN THROUGH 730 PM CDT. 

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO STATE LINE 
AND CHATOM.

IF YOU LIVE NEAR BRUSHY CREEK...OR ALONG THE CHICKASAWHAY OR 
ESCATAWPA RIVERS WHERE THE THREE COUNTIES MEET EXPECT RAPID RISES IN 
WATER LEVELS.  MOVE TO HIGHER GROUND AND DO NOT DRIVE INTO AREAS 
WHERE WATER COVERS THE ROADS.

LAT...LON 3144 8869 3156 8862 3159 8838 3146 8822
      3128 8819 3127 8841 3133 8858

$$
542 
WGUS74 KMOB 080041
FFSMOB

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
741 PM CDT TUE JUN 7 2011

ALC129-MSC041-153-080230-
/O.CON.KMOB.FF.W.0022.000000T0000Z-110608T0230Z/
/00000.0.RS.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WASHINGTON AL-GREENE MS-WAYNE MS-
741 PM CDT TUE JUN 7 2011

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 930 PM CDT FOR
SOUTHEASTERN WAYNE...NORTHEASTERN GREENE AND WEST CENTRAL WASHINGTON
COUNTIES...

AT 735 PM CDT...RADAR AND SATELLITE IMAGERY INDICATED THUNDERSTORM 
ACTIVITY HAS GREATLY DIMINISHED OVER THE WARNED AREA. 
HOWEVER...RUNOFF FROM UP TO SIX INCHES OF RAIN HAS CAUSED A RISE IN 
SMALL CREEKS AND STREAMS AND WILL BE SLOW TO RECEDE.  FOR THIS 
REASON...A FLASH FLOOD WARNING WILL BE ALLOWED TO REMAIN IN EFFECT 
AS LIGHT TO MODERATE RAINFALL GRADUALLY TAPERS THROUGH 930 PM CDT.

IF YOU LIVE NEAR BRUSHY CREEK...OR ALONG THE CHICKASAWHAY OR 
ESCATAWPA RIVERS WHERE THE THREE COUNTIES MEET EXPECT RAPID RISES IN 
WATER LEVELS.  MOVE TO HIGHER GROUND AND DO NOT DRIVE INTO AREAS 
WHERE WATER COVERS THE ROADS.

TO REPORT FLASH FLOODING TO YOUR NATIONAL WEATHER SERVICE...CALL TOLL
FREE AT 1 8 7 7 6 3 3 6 7 7 2.

LAT...LON 3144 8869 3156 8862 3159 8838 3146 8822
      3128 8819 3127 8841 3133 8858

$$

The office that day

Everything else NWS Mobile, AL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 7, 12:33 AM CDTSpecial Marine WarningMOB87 min
Jun 7, 2:11 AM CDTSpecial Marine WarningMOB94 min
Jun 7, 3:16 AM CDTSpecial Marine WarningMOB44 min
Jun 7, 4:10 PM CDTSevere Thunderstorm WarningMOBEscambia35 min
Jun 7, 4:30 PM CDTSevere Thunderstorm WarningMOBConecuh, Escambia45 min
Jun 7, 4:36 PM CDTSevere Thunderstorm WarningMOBMonroe39 min
Jun 7, 4:46 PM CDTSevere Thunderstorm WarningMOBWashington44 min
Jun 7, 4:52 PM CDTSevere Thunderstorm WarningMOBBaldwin, Clarke, Escambia, Monroe38 min
Jun 7, 5:07 PM CDTSevere Thunderstorm WarningMOBClarke, Washington16 min
Jun 7, 5:18 PM CDTSevere Thunderstorm WarningMOBWashington42 min
Jun 7, 5:19 PM CDTSevere Thunderstorm WarningMOBBaldwin, Clarke, Escambia, Monroe, Washington41 min
Jun 7, 5:39 PM CDTSevere Thunderstorm WarningMOBBaldwin, Choctaw, Clarke, Mobile, Monroe, Washington51 min
Jun 7, 5:53 PM CDTSevere Thunderstorm WarningMOBWashington37 min
Jun 7, 6:08 PM CDTSevere Thunderstorm WarningMOBWashington52 min
Jun 7, 6:17 PM CDTSevere Thunderstorm WarningMOBMobile, Washington43 min
Jun 7, 6:38 PM CDTSevere Thunderstorm WarningMOBBaldwin, Mobile37 min
Jun 7, 6:47 PM CDTSpecial Marine WarningMOB88 min
Jun 7, 2:29 PM CDTSevere Thunderstorm WarningMOBPerry, Wayne16 min
Jun 7, 2:31 PM CDTAreal Flood AdvisoryMOBPerry59 min
Jun 7, 2:50 PM CDTSevere Thunderstorm WarningMOBWayne25 min
Jun 7, 3:19 PM CDTSevere Thunderstorm WarningMOBGreene, Perry, Wayne26 min
Jun 7, 3:57 PM CDTSevere Thunderstorm WarningMOBGreene33 min
Jun 7, 4:22 PM CDTAreal Flood AdvisoryMOBGreene113 min

Nearby

Flash Flood Warnings in Mississippi, 2011Flash Flood Warnings in Alabama, 2011Every flash flood warning in 2011

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.