Alert archive / Alabama / Flash Flood Warnings in 2011

Flash Flood Warning 11, NWS Mobile, AL

March 9, 2011Monroe County, Alabama

NWS Mobile, AL issued this flash flood warning at Mar 9, 2011, 7:33 AM CST for Monroe County, Alabama. It was in force for 6 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
Mar 9, 2011, 7:33 AM CST (13:33 UTC)
Expired
Mar 9, 2011, 1:30 PM CST
In force
6 hr
Issued by
NWS Mobile, AL
Area
Storm-based polygon
Flood severity
None

County Monroe County, AL

The radar

The Mobile radar (KMOB), 125 km from the middle of the area, began a volume at 13:34 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

Birmingham, AL (KBMX), launched 12:00Z, 1.6 hours before the alert went out and 190 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, Birmingham, AL at 12:00Z on 2011-03-09Temperature 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, Birmingham, AL at 12:00Z on 2011-03-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 743 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
467 m above ground
0-6 km bulk shear
58 kt
0-1 km storm-relative helicity
743 m²/s²
0-3 km storm-relative helicity
1250 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.

248 
WGUS54 KMOB 091333
FFWMOB
ALC099-091930-
/O.NEW.KMOB.FF.W.0011.110309T1333Z-110309T1930Z/
/00000.0.RS.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOBILE AL
733 AM CST WED MAR 9 2011

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  MONROE COUNTY IN SOUTH CENTRAL ALABAMA...
  THIS INCLUDES THE CITIES OF...MONROEVILLE...FRISCO CITY...

* UNTIL 130 PM CST

* AT 730 AM CST...NATIONAL WEATHER SERVICE RADAR INDICATED A LARGE   
  AREA OF INTENSE SHOWERS AND THUNDERSTORMS MOVING INTO THE WARNED   
  AREA. VERY HEAVY RAIN WILL TRAIN ACROSS THE AREA WITH RAINFALL     
  TOTALS OF 2 TO 4 INCHES LIKELY OVER THE NEXT FEW HOURS.            
  THIS WILL RESULT IN THE FLASH FLOODING THREAT INCREASING RAPIDLY. 

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO MIDWAY...
  TURKESTAN...FRANKLIN...CORDUROY STATION...BEATRICE...AL 47 AND CR
  29 RO AND AL 47 AND CR 29

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.

REPORT FLASH FLOODING TO YOUR NATIONAL WEATHER SERVICE IN MOBILE AT
AREA CODE 2 5 1...AND THEN 6 3 3 6 4 4 3. OR...YOU MAY CONTACT YOUR
NEAREST LAW ENFORCEMENT AGENCY OR COUNTY EMERGENCY MANAGEMENT...AND
THEY WILL RELAY YOUR REPORT.

LAT...LON 3183 8692 3176 8692 3171 8705 3169 8705
      3164 8714 3147 8719 3132 8737 3124 8756
      3132 8778 3136 8775 3135 8772 3142 8769
      3142 8760 3145 8756 3149 8756 3152 8761
      3156 8756 3170 8756 3171 8751 3182 8752

$$

JFB
2 follow-up statements
460 
WGUS74 KMOB 091635
FFSMOB

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
1035 AM CST WED MAR 9 2011

ALC099-091930-
/O.CON.KMOB.FF.W.0011.000000T0000Z-110309T1930Z/
/00000.0.RS.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MONROE AL-
1035 AM CST WED MAR 9 2011

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 130 PM CST FOR
MONROE COUNTY...

AT 1026 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATES 
THAT 2 TO 7 INCHES OF RAIN HAS FALLEN ACROSS OVER MONROE 
COUNTY...WITH THE HIGHEST AMOUNTS OF THE NORTHWESTERN AND SOUTHERN 
PORTIONS OF THE COUNTY.  WIDESPREAD RAIN CONTINUES TO FALL OVER THE 
COUNTY AND IT MAY BECOME NECESSARY TO REPLACE THE FLASH FLOOD 
WARNING WITH AN AREAL FLOOD WARNING SINCE THE DURATION OF THE 
FLOODING WILL BE IN EXCESS OF 6 HOURS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.

A TORNADO WATCH REMAINS IN EFFECT UNTIL NOON CST WEDNESDAY FOR
SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA.

&&

LAT...LON 3183 8692 3176 8692 3171 8705 3169 8705
      3164 8714 3147 8719 3132 8737 3124 8756
      3132 8778 3136 8775 3135 8772 3142 8769
      3142 8760 3145 8756 3149 8756 3152 8761
      3156 8756 3170 8756 3171 8751 3182 8752

$$
266 
WGUS74 KMOB 091934
FFSMOB

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
134 PM CST WED MAR 9 2011

ALC099-091943-
/O.EXP.KMOB.FF.W.0011.000000T0000Z-110309T1930Z/
/00000.0.RS.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MONROE AL-
134 PM CST WED MAR 9 2011

...THE FLASH FLOOD WARNING HAS EXPIRED FOR MONROE COUNTY...

AT 130 PM CST...REPORTS FROM EMERGENCY MANAGEMENT AND LOCAL LAW 
ENFORCEMENT INDICATE THAT THE FLOODED AREAS HAVE SUBSIDED...THUS THE 
FLASH FLOOD WARNING HAS BEEN ALLOWED TO EXPIRE.

LAT...LON 3183 8692 3176 8692 3171 8705 3169 8705
      3164 8714 3147 8719 3132 8737 3124 8756
      3132 8778 3136 8775 3135 8772 3142 8769
      3142 8760 3145 8756 3149 8756 3152 8761
      3156 8756 3170 8756 3171 8751 3182 8752

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 8, 7:11 PM CSTSevere Thunderstorm WarningMOBMobile, Washington34 min
Mar 8, 8:23 PM CSTSevere Thunderstorm WarningMOBWashington37 min
Mar 8, 9:04 PM CSTSevere Thunderstorm WarningMOBClarke, Washington41 min
Mar 8, 9:44 PM CSTSevere Thunderstorm WarningMOBClarke, Washington, Wilcox46 min
Mar 9, 1:32 AM CSTFlash Flood WarningMOBChoctaw118 min
Mar 9, 4:20 AM CSTFlash Flood WarningMOBChoctaw6 hr
Mar 9, 4:22 AM CSTSevere Thunderstorm WarningMOBChoctaw38 min
Mar 9, 4:32 AM CSTTornado WarningMOBChoctaw33 min
Mar 9, 5:07 AM CSTFlash Flood WarningMOBChoctaw6 hr
Mar 9, 5:40 AM CSTTornado WarningMOBChoctaw, Clarke33 min
Mar 9, 5:51 AM CSTFlash Flood WarningMOBClarke, Washington, Wilcox6 hr
Mar 9, 6:37 AM CSTTornado WarningMOBWashington17 min
Mar 9, 7:08 AM CSTSevere Thunderstorm WarningMOBBaldwin, Mobile, Washington52 min
Mar 9, 7:26 AM CSTFlash Flood WarningMOBBaldwin, Clarke, Mobile, Washington6 hr
Mar 9, 7:52 AM CSTSevere Thunderstorm WarningMOBBaldwin, Mobile83 min
Mar 9, 7:54 AM CSTSpecial Marine WarningMOB81 min
Mar 9, 8:01 AM CSTTornado WarningMOBBaldwin, Mobile44 min
Mar 9, 8:14 AM CSTSevere Thunderstorm WarningMOBConecuh, Covington, Escambia61 min
Mar 9, 8:27 AM CSTTornado WarningMOBBaldwin, Mobile63 min
Mar 9, 8:35 AM CSTTornado WarningMOBConecuh, Covington, Escambia40 min
Mar 9, 8:41 AM CSTFlash Flood WarningMOBBaldwin, Mobile4 hr
Mar 9, 8:48 AM CSTFlash Flood WarningMOBConecuh, Escambia5 hr
Mar 9, 8:50 AM CSTSevere Thunderstorm WarningMOBButler, Conecuh, Covington, Crenshaw40 min
Mar 9, 9:02 AM CSTSevere Thunderstorm WarningMOBBaldwin, Escambia58 min
Mar 9, 9:10 AM CSTSevere Thunderstorm WarningMOBButler, Conecuh, Covington, Crenshaw, Escambia65 min
Mar 9, 9:10 AM CSTTornado WarningMOBBaldwin50 min
Mar 9, 9:16 AM CSTTornado WarningMOBBaldwin44 min
Mar 9, 9:16 AM CSTTornado WarningMOBCovington59 min
Mar 9, 9:19 AM CSTSpecial Marine WarningMOB116 min
Mar 9, 9:23 AM CSTSpecial Marine WarningMOB97 min
Mar 9, 9:25 AM CSTFlash Flood WarningMOBBaldwin6 hr
Mar 9, 9:26 AM CSTTornado WarningMOBBaldwin, Escambia49 min
Mar 9, 9:26 AM CSTTornado WarningMOBCovington, Crenshaw26 min
Mar 9, 9:36 AM CSTFlash Flood WarningMOBConecuh, Covington, Escambia114 min
Mar 9, 9:40 AM CSTTornado WarningMOBBaldwin50 min
Mar 9, 9:44 AM CSTAreal Flood AdvisoryMOBButler, Conecuh, Covington, Crenshaw4 hr
Mar 9, 9:54 AM CSTTornado WarningMOBCovington25 min
Mar 9, 10:09 AM CSTSevere Thunderstorm WarningMOBCovington66 min
Mar 9, 10:22 AM CSTAreal Flood WarningMOBChoctaw5 hr
Mar 9, 10:55 AM CSTSpecial Marine WarningMOB80 min
Mar 9, 11:00 AM CSTAreal Flood WarningMOBChoctaw5 hr
Mar 9, 11:14 AM CSTTornado WarningMOBBaldwin61 min
Mar 9, 11:30 AM CSTRiver Flood WarningMOBClarke, Monroe, Wilcox10 days
Mar 9, 11:54 AM CSTAreal Flood AdvisoryMOBConecuh, Covington, Escambia111 min
Mar 9, 11:58 AM CSTSpecial Marine WarningMOB2 hr
Mar 9, 12:00 PM CSTAreal Flood WarningMOBClarke, Washington, Wilcox4 hr
Mar 9, 2:02 PM CSTSpecial Marine WarningMOB58 min

Nearby

Flash 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.