Alert archive / Alabama / Flash Flood Warnings in 2008

Flash Flood Warning 15, NWS Mobile, AL

July 26, 2008Mobile County, Alabama

NWS Mobile, AL issued this flash flood warning at Jul 26, 2008, 3:26 PM CDT for Mobile County, Alabama. It was in force for 109 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 26, 2008, 3:26 PM CDT (20:26 UTC)
Expired
Jul 26, 2008, 5:15 PM CDT
In force
109 min
Issued by
NWS Mobile, AL
Area
Storm-based polygon
Flood severity
None

County Mobile County, AL

The radar

The Mobile radar (KMOB), 16 km from the middle of the area, began a volume at 20:28 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, 8.4 hours before the alert went out and 163 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 2008-07-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1518 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 2008-07-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 26 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
1518 J/kg
Mixed-layer CIN
-61 J/kg
Mixed-layer LCL
901 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
26 m²/s²
0-3 km storm-relative helicity
44 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.

000 
WGUS54 KMOB 262026
FFWMOB
ALC097-262215-
/O.NEW.KMOB.FF.W.0015.080726T2026Z-080726T2215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOBILE AL
326 PM CDT SAT JUL 26 2008

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CENTRAL MOBILE COUNTY IN SOUTHWEST ALABAMA...
  THIS INCLUDES THE MOBILE METROPOLITAN AREA...

* UNTIL 515 PM CDT

* AT 320 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  VERY HEAVY RAIN FROM A LINE OF THUNDERSTORMS OVER THE WARNED AREA.
  RADAR ESTIMATES DETECT BETWEEN 2 TO 3 INCHES OF RAIN HAD ALREADY
  FALLEN FROM NEAR CREOLA TO WEST MOBILE. 

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO WHISTLER...
  SEMMES...SATSUMA...SARALAND...MOBILE...MOBILE REGIONAL AIRPORT...
  DEES...AND MUCH OF I65 AND I-10.

ADDITIONAL RAINFALL AMOUNTS OF 2 TO 3 INCHES ARE POSSIBLE IN THE 
WARNED AREA AS THE STORMS ARE NOW MOVING SLOWLY TO THE SOUTH.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES
AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.

FLOODING IS OCCURRING OR IS IMMINENT. MOST FLOOD RELATED DEATHS OCCUR
IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS WATER COVERED BRIDGES...
DIPS...OR LOW WATER CROSSINGS. NEVER TRY TO CROSS A FLOWING STREAM...
EVEN A SMALL ONE...ON FOOT. TO ESCAPE RISING WATER MOVE UP TO HIGHER
GROUND.

LAT...LON 3041 8841 3071 8842 3104 8796 3092 8795
      3088 8799 3085 8795 3083 8795 3083 8797
      3080 8802 3067 8800 3065 8805 3061 8805
      3058 8808

$$
2 follow-up statements
000 
WGUS74 KMOB 262051
FFSMOB

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
351 PM CDT SAT JUL 26 2008

ALC097-262215-
/O.CON.KMOB.FF.W.0015.000000T0000Z-080726T2215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MOBILE AL-
351 PM CDT SAT JUL 26 2008

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 515 PM CDT FOR
CENTRAL MOBILE COUNTY...

AT 342 PM CDT...NATIONAL WEATHER SERVICE RADAR CONTINUED TO INDICATE 
A BAND OF THUNDERSTORMS PRODUCING VERY HEAVY RAIN OVER THE WARNED 
AREA.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO I65 AND
I165...WHISTLER...SEMMES...SATSUMA...SARALAND...SALCO...OAK GROVE...
KUSHLA...I65 AND US 43...I65 AND AL 158...EIGHT MILE...CREOLA...
CHICKASAW...CELESTE AND AXIS

RAINFALL MEASUREMENTS FROM RAIN GAGES AT MOBILE AIRPORT INDICATE 
ALMOST TWO AND ONE TENTH INCHES OF RAIN FALLING IN APPROXIMATELY 40 
MINUTES. EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF 
SMALL CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. 
ADDITIONALLY...COUNTRY ROADS AND FARMLANDS ALONG THE BANKS OF 
CREEKS...STREAMS AND OTHER LOW LYING AREAS ARE SUBJECT TO FLOODING.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE 
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS 
SAFELY. DO NOT UNDERESTIMATE THE POWER OF FLOOD WATERS. ONLY A FEW 
INCHES OF RAPIDLY FLOWING WATER CAN QUICKLY CARRY AWAY YOUR VEHICLE. 
MOVE TO HIGHER GROUND.

LAT...LON 3041 8841 3071 8842 3104 8796 3092 8795
      3088 8799 3085 8795 3083 8795 3083 8797
      3080 8802 3067 8800 3065 8805 3061 8805
      3058 8808

$$
000 
WGUS74 KMOB 262114
FFSMOB

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
414 PM CDT SAT JUL 26 2008

ALC097-262215-
/O.CON.KMOB.FF.W.0015.000000T0000Z-080726T2215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MOBILE AL-
414 PM CDT SAT JUL 26 2008

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 515 PM CDT FOR
CENTRAL MOBILE COUNTY...

AT 400 PM CDT...NATIONAL WEATHER SERVICE RADAR CONTINUED TO INDICATE 
THUNDERSTORMS PRODUCING VERY HEAVY RAIN OVER THE WARNED AREA. RAIN 
SHOULD BEGIN TAPERING OFF NORTH AND WEST OF A LINE FROM BIG CREEK 
LAKE AND BATES AIRPORT TO MOUNT VERNON AS OF 415 PM. DECREASING RAIN 
WILL EXTEND NORTHWEST OF A LINE FROM BAY MINETTE TO BAYOU LA BATRE 
BY 515 PM.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO DOWNTOWN 
MOBILE...WALLACE TUNNEL...UNIVERSITY OF SOUTH ALABAMA...TILLMANS 
CORNER...THEODORE...SAINT ELMO...SPRING HILL COLLEGE...SNOW AT 
TANNER WILLIAMS...SEVEN HILLS...SEMMES...SCHILLINGER AT THREE 
NOTCH...SATSUMA...SARALAND...PRICHARD...MOBILE AIRPORT...MAGNOLIA 
GROVE GOLF COURSE...LADD STADIUM...IRVINGTON...GRAND BAY... 
CHICKASAW...BROOKLEY FIELD AIRPORT...BIG CREEK LAKE DAM...AND 
AIRPORT AT UNIVERSITY.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.

LAT...LON 3041 8841 3071 8842 3104 8796 3092 8795
      3088 8799 3085 8795 3083 8795 3083 8797
      3080 8802 3067 8800 3065 8805 3061 8805
      3058 8808

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 26, 8:20 AM CDTSpecial Marine WarningMOB25 min
Jul 26, 2:50 PM CDTSevere Thunderstorm WarningMOBBaldwin, Mobile40 min
Jul 26, 2:53 PM CDTSpecial Marine WarningMOB82 min
Jul 26, 4:36 PM CDTSpecial Marine WarningMOB114 min
Jul 26, 6:35 PM CDTSpecial Marine WarningMOB40 min

Nearby

Flash Flood Warnings in Alabama, 2008Every flash flood warning in 2008

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.