#837 Postby Dean4Storms » Sun Jun 11, 2006 3:31 pm
AFD Mobile.......
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MOBILE AL
243 PM CDT SUN JUN 11 2006
.SYNOPSIS...TROPICAL STORM ALBERTO WAS OVER THE SOUTHERN GULF OF
MEXICO AT MID AFTERNOON. THE LOW LEVEL CENTER HAS MOVED AWAY FROM
THE DEEP CONVECTION. STATIONARY FRONT WELL TO THE NORTH ACROSS THE
TENNESSEE VALLEY. IN BETWEEN THE TWO SYSTEMS...THE FORECAST AREA
REMAINS CAUGHT UP IN THE DRY MID LEVELS AS SEEN BY WATER VAPOR. /11
&&
.SHORT TERM...FORECAST NEXT FEW DAYS DEPENDS ON FUTURE TRACK AND
STRENGTH OF ALBERTO. GUIDANCE IS QUITE DIVERSE IN THEIR
SOLUTIONS...COURSE OF LEAST REGRET IS THE GFS WHICH IS CLOSER TO THE
OFFICIAL NHC TRACK AND AGREES MORE CLOSELY WITH OUR PREVIOUS
FORECASTS. THIS WILL MEAN LITTLE IF ANY RAIN OVER THE FORECAST
AREA...SOME ISOLATED CONVECTION ALONG THE COAST AND NEAR THE FRONT
IN A FEW DAYS AS IT DROPS INTO THE FORECAST AREA. THE UPPER TROUGH
IS SUPPOSED TO PICK UP ALBERTO AND MOVE IT OFF TO THE NORTHEAST...
HOWEVER IN DEFERENCE TO THE NAM AND THE CANADIAN WILL BOOST THE POPS
JUST A BIT NEXT 24 TO 36 HOURS AS THESE TWO MODELS KEEP IT CLOSER TO
THE CENTRAL GULF COAST AND PUSH MORE MOISTURE NORTH TOWARD THIS
AREA.
.LONG TERM...ASSUMMING THE TROPICAL STORM IS HISTORY BY THE START OF
THE LONG TERM...UPPER RIDGE OVER TEXAS WILL KEEP NORTHWEST FLOW
ALOFT AND LOWER PRECIPITABLE WATER VALUES ACROSS FORECAST AREA. ONLY
ISOLATED TO SLIGHT CHANCE POPS THROUGH THE EXTENDED WITH MID 90S
MOST PLACES FOR HIGHS AND AROUND 70 TO MID AND UPPER 70S FOR LOWS.
/11
&&
.MARINE...WEATHER HEADLINE FOR THE DAY IS THE FORMATION OF THE FIRST
TROPICAL STORM OF THE 2006 HURRICANE SEASON OVER THE MID
GULF...ALBERTO. DATA FROM A HURRICANE HUNTER MISSION THIS MORNING
INDICATED TROPICAL STORM FORCE WIND GUSTS IN SQUALLS OVER THE
EASTERN GULF...NORTHEAST OF THE SYSTEM. LATEST VISIBLE SATELLITE
PICTURES SHOW A HIGHLY SHEARED STRUCTURE TO THE CYCLONIC ENVELOPE OF
ALBERTO. THE LOW LEVEL CENTER...OVER THE SOUTH CENTRAL GULF...WAS
WELL REMOVED FROM THE DEEP CONVECTION/HIGHER WINDS WELL EAST OF THE
CENTER. THE LATEST FORECASTS FROM THE NATIONAL HURRICANE CENTER
SHOWS ALBERTO CROSSING THE FLORIDA PENINSULA TUESDAY AND MOVING
NORTHEAST OFF THE SOUTHEAST UNITED STATES COAST WEDNESDAY. EARLY IN
THE FORECAST...MAIN IMPACT LOOKS TO COME IN THE WAY OF BUILDING
SWELL...WHICH WILL MEET ADVISORY CRITERIA FOR THE 20 TO 60 NM ZONES.
WE ARE ALSO CALLING FOR SOME PASSING BANDS OF SHOWERS AT TIMES AS
WELL. WITH ALBERTO FORECAST TO LIFT OUT OF THE GULF TUESDAY...A
DECREASING WIND AND SUBSIDING SEA STATE IS FORECAST.
FOR ADDITIONAL INFORMATION ON TROPICAL STORM ALBERTO...REFER TO THE
LATEST PRODUCTS FROM THE NATIONAL HURRICANE CENTER. /10
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