Alert archive / Florida / Flash Flood Warnings in 2009

Flash Flood Warning 55, NWS Mobile, AL

November 9, 2009Escambia County, Santa Rosa County, Florida; Baldwin County, Mobile County, Alabama

NWS Mobile, AL issued this flash flood warning at Nov 9, 2009, 10:36 PM CST for Escambia County, Santa Rosa County, Florida; Baldwin County, Mobile County, Alabama. It was in force for 3 hr. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Nov 9, 2009, 10:36 PM CST (04:36 UTC)
Expired: Nov 10, 2009, 1:30 AM CST
In force: 3 hr
Issued by: NWS Mobile, AL
Area: Storm-based polygon
Flood severity: None

Counties Baldwin County, AL, Mobile County, AL, Escambia County, FL, Santa Rosa County, FL

The radar

The Mobile radar (KMOB), 83 km from the middle of the area, began a volume at 04:36 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.

What was reported inside it

Time	Report	Where	Remark
Nov 9, 11:30 PM CST	FLASH FLOOD	Orange Beach, AL	WIDESPREAD STREET FLOODING IN ORANGE BEACH.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 4.6 hours before the alert went out and 218 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 2 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 516 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: 109 m²/s²
0-3 km storm-relative helicity: 438 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 100436
FFWMOB
ALC003-097-FLC033-113-100730-
/O.NEW.KMOB.FF.W.0055.091110T0436Z-091110T0730Z/
/00000.0.RS.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOBILE AL
1036 PM CST MON NOV 9 2009

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHEASTERN ESCAMBIA COUNTY IN NORTHWEST FLORIDA...
  THIS INCLUDES THE CITY OF PENSACOLA...
  SOUTHWESTERN SANTA ROSA COUNTY IN NORTHWEST FLORIDA...
  SOUTHERN BALDWIN COUNTY IN SOUTHWEST ALABAMA...
  EXTREME SOUTHEASTERN MOBILE COUNTY IN SOUTHWEST ALABAMA...

* UNTIL 130 AM CST

* AT 1023 PM CST...NATIONAL WEATHER SERVICE RADAR INDICATED A RAIN BAND 
  ASSOCIATED WITH TROPICAL STORM IDA...NEARLY STATIONARY OVER SOUTHERN PORTIONS
  OF BALDWIN COUNTY ALABAMA...SOUTHERN ESCAMBIA COUNTY AND EXTREME 
  SOUTHWEST SANTA ROSA COUNTY IN FLORIDA. DOPPLER WEATHER RADAR TRENDS INDICATE THE 
  POTENTIAL OF HEAVY RAIN WILL CONTINUE INTO THE PREDAWN HOURS TUESDAY MORNING
  OVER THE WARNED AREA.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO BON
  SECOUR...TURKEY BRANCH...SUMMERDALE...SILVERHILL...SEMINOLE...
  ROBERTSDALE...POINT CLEAR...OAK...MOUTH OF WEEKS BAY...MONTROSE...
  MIFLIN...MARLOW...MAGNOLIA SPRINGS...LILLIAN...HOUSTONVILLE...
  FOLEY...FAIRHOPE...ELSANOR...ELBERTA...CLAY CITY...BATTLES WHARF...
  WEST PENSACOLA...WARRINGTON...PENSACOLA REGIONAL A/P...PENSACOLA
  NAVAL BASE...PACE...MYRTLE GROVE...GULF BREEZE...GOULDING...
  GONZALEZ...FERRY PASS...ENSLEY...EAST PENSACOLA HEIGHTS...COTTAGE
  HILL...CANTONMENT...BROWNSVILLE...BRENT...BEULAH AND BELLVIEW

DOPPLER WEATHER PRECIPITATION ESTIMATES SUGGEST THAT UPWARDS OF 2 TO 
3 INCHES OF RAIN HAS ALREADY FALLEN OVER PORTIONS OF SOUTHERN 
BALDWIN COUNTY...SOUTHEAST OF FOLEY SINCE 7 PM THIS EVENING. AMOUNTS 
OF JUST UNDER 2 INCHES HAVE FALLEN OVER SOUTHERN ESCAMBIA COUNTY.   
ADDITIONAL RAINFALL AMOUNTS OF 2 TO 4 INCHES ARE POSSIBLE IN THE 
WARNED AREA THROUGH 130 AM TUESDAY MORNING.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE 
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED...ACT QUICKLY. 
MOVE UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN 
AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

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.

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 3027 8795 3025 8788 3029 8776 3042 8792
      3059 8792 3064 8711 3053 8711 3058 8716
      3058 8717 3047 8714 3038 8725 3034 8726
      3034 8720 3036 8722 3041 8711 3035 8709
      3034 8710 3020 8806

$$

10

1 follow-up statement

000 
WGUS74 KMOB 100542
FFSMOB

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
1142 PM CST MON NOV 9 2009

ALC003-097-FLC033-113-100730-
/O.CON.KMOB.FF.W.0055.000000T0000Z-091110T0730Z/
/00000.0.RS.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BALDWIN AL-MOBILE AL-ESCAMBIA FL-SANTA ROSA FL-
1142 PM CST MON NOV 9 2009

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 130 AM CST FOR
SOUTHWESTERN SANTA ROSA...SOUTHEASTERN ESCAMBIA...EXTREME
SOUTHEASTERN MOBILE AND SOUTHERN BALDWIN COUNTIES...

AT 1134 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A PERSISTENT RAINBAND ASSOCIATED WITH TROPICAL STORM IDA 
ALONG AND SOUTH OF THE INTERSTATE 10 CORRIDOR. DOPPLER WEATHER RADAR 
PRECIPITATION ESTIMATES SUGGEST THAT 3 TO 5 INCHES OF RAIN HAS 
FALLEN IN THE WARNING AREA. THE HIGHEST AMOUNTS OF RAIN...NEAR 5 
INCHES LOOKS TO HAVE FALLEN NEAR FOLEY ALABAMA SINCE EARLY EVENING.  

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO TURKEY
BRANCH...SUMMERDALE...SILVERHILL...SEMINOLE...ROBERTSDALE...
MONTROSE...MARLOW...LILLIAN...HOUSTONVILLE...FAIRHOPE...ELSANOR...
ELBERTA...CLAY CITY...WEST PENSACOLA...PENSACOLA REGIONAL A/P...
PACE...MYRTLE GROVE...GOULDING...GONZALEZ...FERRY PASS...ENSLEY...
CANTONMENT...BROWNSVILLE...BRENT...BEULAH AND BELLVIEW

PRECAUTIONARY/PREPAREDNESS ACTIONS...

ADDITIONAL RAINFALL AMOUNTS OF 2 TO 4 INCHES ARE POSSIBLE IN THE 
WARNED AREA THROUGH 130 AM TUESDAY MORNING.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE
UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS
SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

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.

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 3027 8795 3025 8788 3029 8776 3042 8792
      3059 8792 3064 8711 3053 8711 3058 8716
      3058 8717 3047 8714 3038 8725 3034 8726
      3034 8720 3036 8722 3041 8711 3035 8709
      3034 8710 3020 8806

$$

10

The office that day

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

Issued	Product	Office	Lasted
Nov 10, 9:31 AM CST	Wind Advisory	MOB	11 hr
Nov 10, 9:35 AM CST	Coastal Flood Statement	MOB	12 hr
Nov 10, 9:34 AM CST	Gale Warning	MOB	19 hr
Nov 10, 9:34 AM CST	Small Craft Advisory	MOB	8 hr
Nov 10, 9:34 AM CST	Small Craft Advisory	MOB	48 hr

Nearby

Flash Flood Warnings in Florida, 2009 Flash Flood Warnings in Alabama, 2009 Every flash flood warning in 2009

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.