Coastal Flood Warning 2, NWS Mobile, AL

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MOBILE AL
320 PM CST TUE NOV 14 2006

.SYNOPSIS...FOR THE CURRENT FORECAST...BIGGEST ITEM TO DEAL WITH IS
UPPER SYSTEM SWINGING SOUTHEAST OVER THE CENTRAL PLAINS AT THIS
TIME...AND THE CHANCE FOR SEVERE WEATHER LATER TONIGHT INTO WEDNESDAY
NIGHT. FIRST THINGS FIRST...TIME TO TAKE A LOOK AT THE CURRENT
ANALYSIS. THE UPPER SYSTEM EXPECTED TO CROSS OUR AREA TOMORROW IS ON
THE TAIL END OF AN UPPER TROUGH STRETCHING NORTHWEST TO AN UPPER LOW
OVER THE SOUTHERN CA PLAINS. A SHORTWAVE PRECEDING THIS ONE WAS
MOVING OVER THE MID MISS RIVER VALLEY....WITH MORE ENERGY ANALYZED
BEHIND. IN THE LOWER LEVELS OF THE TROPOSPHERE...A WARM FRONT HAS
BEGUN TO ORGANIZE ALONG THE LA/MS/AL/NW FL GULF COAST...CONNECTING
WITH MORE ORGANIZED FRONT OVER TX/OK/W-RN LA. THE GOOD SOUTHERLY FLOW
OVER THE LOWER MISS RIVER VALLEY IS CREATING GOOD UPGLIDE SHOWERS
OVER S-RN LA STRETCHING OVER COASTAL AREAS OF THE FA...WITH SOME GOOD
TSRA MIXING IN OVER S-RN LA.

&&

.SHORT TERM (TONIGHT THROUGH THURSDAY NIGHT)...AS THE UPPER SYSTEM
EAST OF THE CENTRAL US ROCKIES DIVES SOUTHEAST INTO
WEDNESDAY..ORGANIZING AT IT COMES...THE WARM FRONT ALONG THE COAST
WILL CONTINUE TO ORGANIZE...THEN START MOVING NORTH LATER TONIGHT
INTO WEDNESDAY. QUESTION IS WHEN. HAVE A FEELING IT WILLS TART
WORKING ITS WAY NORTH AROUND SUNRISE WEDNESDAY...WHEN THE LOW LEVEL
FLOW GETS REALLY STRONG. GFS IS ADVERTISING A BLOW UP OVER
SOUTHEASTERN LA...BLOWING THE WINDS UP BEGINNING OF THE
FORECAST...BUT THIS LOOKS LIKE CONVECTIVE FEEDBACK...AND AM LEANING
TOWARDS THE NAM TIMING IN THE LOW LEVEL FLOW BUILDING THROUGH THE
NIGHT BEFORE COMING TO A HEAD WEDNESDAY DAYTIME. DO FEEL THERE WILL
BE ISENTROPIC UPGLIDE INDUCED SHOWERS THROUGH THE NIGHT NORTH OF THE
WARM FRONT. THE AMOUNT OF RAIN WE GET WITH THIS PRE-SQUALL LINE
SHOWERS MAY DELAY THE WARM FRONT CRAWLING NORTH LATER TONIGHT.

FOR WEDNESDAY...THE WARM FRONT IS/HAS BEGUN MOVING NORTH AS THE
STRONGER UPPER DYNAMICS MOVE OVER THE LOWER MISS RIVER VALLEY. GFS
AND NAM ARE IN PRETTY GOOD AGREEMENT WITH TIMING OF A SQUALL LINE
CROSSING THE AREA...WITH THE LINE MOVING OVER WESTERN SECTIONS OF THE
FA MID MORNING...SPLITTING THE FA IN HALF NOONTIME OR A BIT
AFTER....AND NEAR OR JUST PAST THE EASTERN BORDER OF THE FA BY
SUNSET. BOTH NAM AND GFS ARE ADVERTISING ENOUGH CAPE FOR STRONG
STORMS...AND ENOUGH HELICITY FOR ROTATION (STRONG ROTATION ACTUALLY).
ITS LOOKING LIKE WIND DAMAGE WILL BE THE PRIMARY THREAT FROM THE LINE
GOING THROUGH...THOUGH WITH THE HIGH HELICITIES EXPECTED...LOW LEVEL
SPINNERS CANT BE RULED OUT.

FOR WEDNESDAY NIGHT...THE WORST OF THE WEATHER SHOULD BASICALLY BE
OVER FOR MOST OF THE FA. THE SQUALL LINE WILL BE NEAR...BUT
BASICALLY EAST OF THE EASTERN BORDER BY THE BEGINNING OF WEDNESDAY
EVENING. SOME LINGERING SHOWERS EAST WITH SOME WRAP-AROUND INDUCED
SHOWERS NORTH. WRAP-AROUND CLOUDS WILL HANG AROUND OVER MOST OF THE
AREA...WITH LIGHT SHOWERS POSSIBLE NORTHERN AREAS OF THE FA AS THE
UPPER SYSTEM BEGINS TO MOVE NORTHEAST. THE FA SHOULD CLEAR OUT
THURSDAY AS THE UPPER SYSTEM CONTINUES ITS NORTHEASTWARD TREK AWAY
FROM THE FA AND LOW LEVEL FLOW BECOMES NORTHWESTERLY....WITH
THURSDAY NIGHT LOOKING TO BE COLD...CLEAR NIGHT.

.LONG TERM (FRIDAY THROUGH MONDAY)...HAVE HAD LITTLE CHANCE TO DELVE
INTO THE EXTENDED DUE THE MORE PRESSING SHORT TERM. THE FA REMAINS
UNDER DRY...LOW LEVEL NORTHERLY FLOW INTO THE COMING WEEK...WITH WEAK
RE- ENFORCEMENT SATURDAY. ANOTHER SYSTEM DIVES SOUTHEAST FROM OVER
THE NORTHERN PLAINS SUNDAY...ENDING UP OVER THE CAROLINAS BY TUESDAY.
SEE LITTLE IN THE WAY OF PRECIP...JUST MORE RE-ENFORCING OF THE
NORTHERLY FLOW.

&&

.MARINE...A STRONG LOW PRESSURE SYSTEM ADVANCES ACROSS THE SOUTHERN
PLAINS THEN MOVES ALONG THE OHIO RIVER VALLEY WEDNESDAY NIGHT.  THIS
SYSTEM WILL BRINGING WIDESPREAD STRONG STORMS TO THE AREA WITH A
COLD FRONT ENDED MUCH OF THE CONVECTION AS IT MOVES THROUGH
WEDNESDAY AFTERNOON INTO THE EVENING HOURS.  A SMALL CRAFT ADVISORY
STARTS LATE THIS EVENING AS THE SOUTHERLY FLOW INCREASES TO NEAR 20
KNOTS.  THE SOUTHERLY FLOW CONTINUES TO INCREASE THROUGH WEDNESDAY
MORNING AND AFTER SEVERAL MODEL RUNS REMAINING FAIRLY CONSISTENT
WITH THIS EVOLVING INTO A SIGNIFICANT WIND EVENT...HAVE GONE WITH A
GALE WARNING FOR ALL BUT MOBILE BAY FROM 10 AM WEDNESDAY THROUGH 2
AM THURSDAY MORNING WHEN WIND GUSTS WILL NO LONGER ATTAIN GALE FORCE
ON A FREQUENT BASIS.  A COASTAL FLOOD WATCH FOR THE COASTAL SECTIONS
HAS ALSO BEEN POSTED FOR WEDNESDAY THROUGH WEDNESDAY EVENING.  A
SMALL CRAFT ADVISORY FOLLOWS THE GALE WARNING AND ENDS LATE THURSDAY
MORNING AS THE WESTERLY FLOW IN THE WAKE OF THE COLD FRONT CONTINUES
TO GRADUALLY SUBSIDE.  THE FLOW VEERS GRADUALLY TO THE NORTH AND
CONTINUES TO SUBSIDE THROUGH THURSDAY NIGHT AS HIGH PRESSURE BUILDS
INTO THE REGION...WITH A GENERALLY LIGHT OFFSHORE FLOW PERSISTING
THROUGH SUNDAY. /29

&&

.FIRE WEATHER...GOOD OR BAD...DEPENDING UPON ONES POINT OF VIEW FOR
BURNING TONIGHT INTO THURSDAY...WITH A SYSTEM PASSING BRINGING HIGH
WINDS...BUT LOTS OF RAIN LATER TONIGHT THROUGH WEDNESDAY. WRAP AROUND
FLOW WEDNESDAY NIGHT INTO THURSDAY WILL KEEP TEMPS DOWN...LIMITING
THE DRYING OUT. THINGS WILL SETTLE THURSDAY NIGHT...WITH NORTHERLY
FLOW LASTING THROUGH THE WEEKEND.

&&

.PRELIMINARY POINT TEMPS/POPS...
MOBILE      62  75  46  60  39 /  90 100  20  10  10
PENSACOLA   63  77  50  61  41 /  90 100  40  10  10
DESTIN      62  75  52  61  44 /  80  90  50  10  10
EVERGREEN   56  70  45  57  34 /  90 100  40  10  10
WAYNESBORO  59  72  42  57  33 / 100 100  30  10  10
CAMDEN      57  70  46  56  34 / 100 100  40  10  10

&&

.MOB WATCHES/WARNINGS/ADVISORIES...
AL...COASTAL FLOOD WATCH FROM 6 AM WEDNESDAY TO MIDNIGHT THURSDAY FOR
     THE FOLLOWING ZONES: LOWER BALDWIN...LOWER MOBILE...UPPER
     BALDWIN...AND UPPER MOBILE.

FL...COASTAL FLOOD WATCH FROM 6 AM WEDNESDAY TO MIDNIGHT THURSDAY FOR
     THE FOLLOWING ZONES: COASTAL ESCAMBIA...COASTAL OKALOOSA...
     AND COASTAL SANTA ROSA.

MS...NONE.
GM...SMALL CRAFT ADVISORY FROM 11 PM TUESDAY TO 11 AM THURSDAY FOR
     THE FOLLOWING ZONES: AND MOBILE BAY.

     GALE WARNING FROM 8 AM WEDNESDAY TO 2 AM THURSDAY FOR THE
     FOLLOWING ZONES: COASTAL WATERS FROM DESTIN TO PENSACOLA FL
     OUT 20 NM...COASTAL WATERS FROM PENSACOLA FL TO PASCAGOULA
     MS OUT 20 NM...WATERS FROM DESTIN TO PENSACOLA FL FROM 20
     TO 60 NM...AND WATERS FROM PENSACOLA FL TO PASCAGOULA MS
     FROM 20 TO 60 NM.

     SMALL CRAFT ADVISORY FROM 11 PM TUESDAY TO 8 AM WEDNESDAY FOR
     THE FOLLOWING ZONES: COASTAL WATERS FROM DESTIN TO
     PENSACOLA FL OUT 20 NM...COASTAL WATERS FROM PENSACOLA FL
     TO PASCAGOULA MS OUT 20 NM...WATERS FROM DESTIN TO
     PENSACOLA FL FROM 20 TO 60 NM...AND WATERS FROM PENSACOLA
     FL TO PASCAGOULA MS FROM 20 TO 60 NM.

     SMALL CRAFT ADVISORY FROM 2 AM THURSDAY TO 11 AM THURSDAY FOR
     THE FOLLOWING ZONES: COASTAL WATERS FROM DESTIN TO
     PENSACOLA FL OUT 20 NM...COASTAL WATERS FROM PENSACOLA FL
     TO PASCAGOULA MS OUT 20 NM...WATERS FROM DESTIN TO
     PENSACOLA FL FROM 20 TO 60 NM...AND WATERS FROM PENSACOLA
     FL TO PASCAGOULA MS FROM 20 TO 60 NM.

&&

16/29

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE MOBILE AL
530 PM CST TUE NOV 14 2006

ALZ051>064-FLZ001>006-GMZ630-650-655-670-675-MSZ067-075-076-078-079-
151100-
COASTAL WATERS FROM DESTIN TO PENSACOLA FL OUT 20 NM-
WATERS FROM DESTIN TO PENSACOLA FL FROM 20 TO 60 NM-
COASTAL WATERS FROM PENSACOLA FL TO PASCAGOULA MS OUT 20 NM-
WATERS FROM PENSACOLA FL TO PASCAGOULA MS FROM 20 TO 60 NM-
MOBILE BAY-BALDWIN COASTAL-BALDWIN INLAND-BUTLER-CHOCTAW-CLARKE-
CONECUH-COVINGTON-CRENSHAW-ESCAMBIA-ESCAMBIA COASTAL-ESCAMBIA INLAND-
GEORGE-GREENE-MOBILE COASTAL-MOBILE INLAND-MONROE-OKALOOSA COASTAL-
OKALOOSA INLAND-PERRY-SANTA ROSA COASTAL-SANTA ROSA INLAND-STONE-
WASHINGTON-WAYNE-WILCOX-
530 PM CST TUE NOV 14 2006

THIS HAZARDOUS WEATHER OUTLOOK IS FOR INLAND SOUTHEAST MISSISSIPPI...
SOUTHWEST ALABAMA...THE WESTERN FLORIDA PANHANDLE AND ADJACENT GULF
COASTAL WATERS.

.DAY ONE...TONIGHT AND WEDNESDAY.

...A GALE WARNING IS IN EFFECT FROM WEDNESDAY MORNING THROUGH LATE
WEDNESDAY NIGHT...

...A COASTAL FLOOD WATCH IS IN EFFECT THROUGH LATE WEDNESDAY EVENING
FOR THE ALABAMA AND EXTREME NORTHWEST FLORIDA COASTLINES...

...A SLIGHT RISK OF SEVERE THUNDERSTORMS EXISTS FOR TONIGHT AND THE
RISK WILL RISE TO MODERATE ON WEDNESDAY AS A POWERFUL STORM SYSTEM
IS POISED TO MOVE THROUGH THE CENTRAL GULF COAST REGION OVER THE
NEXT DAY...

LATEST FORECAST THINKING IS THAT A STRONG LINE OF THUNDERSTORMS WILL
CROSS INTERIOR SOUTHEASTERN MISSISSIPPI AND SOUTHWESTERN ALABAMA
THROUGH NOON ON WEDNESDAY WITH AREAS EAST OF I-65 EXPERIENCING
PASSAGE FROM NOON THROUGH 5 PM CST. MODELS SHOW ENOUGH INSTABILITY
AND VERTICAL WIND SHEAR TO SUPPORT STRONG ROTATING STORMS THAT COULD
PRODUCE TORNADOES AND DAMAGING STRAIGHT-LINE WINDS. THIS IS ONE OF
THOSE SITUATIONS WHEREBY TORNADOES CAN BE EMBEDDED WITHIN STORMS
ALONG THE INTENSE LINE OF STORMS. OFTEN...THESE ARE RAIN-WRAPPED AND
CAN BE VERY HARD TO SPOT.  PLEASE BE AWARE ALSO...THAT SOME STORMS
COULD PRODUCE TORNADOES WELL AHEAD OF THE LINE LATE TONIGHT.

A COASTAL FLOOD WATCH IS IN EFFECT THROUGH LATE WEDNESDAY EVENING
FOR THE ALABAMA AND EXTREME NORTHWEST FLORIDA COASTLINES. SOUTHERLY
WINDS OVER THE COASTAL WATERS WILL INCREASE SIGNIFICANTLY TONIGHT.
SMALL CRAFT ADVISORIES HAVE BEEN POSTED OVER THE COASTAL WATERS OF
ALABAMA AND NORTHWEST FLORIDA FOR 20 TO 25 KT SOUTHERLY WINDS AND
SEAS BUILDING TO NEAR 7 FEET TONIGHT. THIS WILL INCREASE TO 30 TO 35
KNOTS WITH HIGHER GUSTS AND 10 TO 12 FEET ON WEDNESDAY AFTERNOON.
FOR THIS REASON...A GALE WARNING HAS BEEN HOISTED FOR WEDNESDAY.
PLEASE BE AWARE THAT THE STRONG LINE OF THUNDERSTORMS THAT PASSES ON
WEDNESDAY WILL LIKELY BE ACCOMPANIED BY A SUDDEN SOUTHERLY TO
WESTERLY WINDSHIFT AND COULD BROADSIDE NORTH-SOUTH MOVING VESSELS
AND BOATS. BEST ADVICE IS TO GET OFF THE WATER.

THE TIME OF HIGH TIDE ON WEDNESDAY WILL BE DURING THE MID EVENING
HOURS. HALF-FOOT TIDAL FLUCTUATIONS BETWEEN THE TIME OF LOW AND HIGH
TIDES WILL LIMIT THE MAGNITUDE OF ANY COASTAL FLOODING THAT MAY
OCCUR.  COASTAL RESIDENTS WHO LIVE IN LOW-LYING AREAS SHOULD TAKE
PRECAUTIONS NOW TO PROTECT THEIR PERSONAL PROPERTY AND BELONGINGS. A
COASTAL FLOOD WATCH MEANS THAT CONDITIONS FAVORABLE FOR FLOODING ARE
EXPECTED TO DEVELOP. COASTAL RESIDENTS SHOULD BE ALERT FOR LATER
STATEMENTS OR WARNINGS.

.DAYS TWO THROUGH SEVEN...WEDNESDAY EVENING THROUGH MONDAY.

AT THIS TIME...SHOWERS AND SEVERE THUNDERSTORMS WILL HAVE ENDED FROM
THE WEST OVER ALABAMA AND WILL BE IN THE PROCESS OF ENDING FORM THE
WEST OVER THE EXTREME NORTHWEST FLORIDA PANHANDLE.  SURFACE WINDS...
HOWEVER...COULD BE IN THE 20 TO 25 MPH RANGE WITH HIGHER GUSTS.
TRAVELING WITH HIGH PROFILE VEHICLES COULD REMAIN A CHALLENGE
WEDNESDAY NIGHT.

.SPOTTER INFORMATION STATEMENT...

ACTIVATION OF STORM SPOTTERS OR EMERGENCY MANAGEMENT PERSONNEL FOR
SEVERE WEATHER OPERATIONS MAY BE NECESSARY ACROSS PORTIONS OF
INTERIOR SOUTHEAST MISSISSIPPI...AS WELL AS THE COASTAL COUNTIES OF
ALABAMA AND THE WESTERN FLORIDA PANHANDLE LATE TONIGHT AND
WEDNESDAY.

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