Tropical Depression SIXTEEN-E

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TROPICAL DEPRESSION SIXTEEN-E DISCUSSION NUMBER   7
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
8 AM PDT SUN OCT 16 2005
 
A 0819 UTC AMSU PASS INDICATED THE LOW LEVEL CENTER OF TD-16E
WAS SOMEWHAT DISPLACED FROM THE AREA OF DEEP CONVECTION. THIS WAS
ALSO CONFIRMED BY THE FIRST VISIBLE SATELLITE IMAGES OF THE DAY 
WHICH SHOW THE LOW LEVEL CENTER OF THE DEPRESSION NEAR THE
SOUTHEASTERN EDGE OF THE SMALL AREA OF DEEP CONVECTION. THIS IS
INDICATIVE OF CONTINUING SOUTHEASTERLY SHEAR. DVORAK NUMBERS ARE
2.0 FROM TAFB AND AFWA AND 2.5 FROM SAB. THE INITIAL INTENSITY IS
KEPT AT 30 KT FOR THIS ADVISORY. 
 
INITIAL MOTION IS SLIGHTLY TO THE RIGHT AT 280/5...AND PERHAPS
EVEN FURTHER TO THE RIGHT THAN INDICATED HERE. A LARGE AND STRONG
DEEP-LAYER LOW PRESSURE SYSTEM OVER SOUTHERN CALIFORNIA AND
NORTHERN BAJA CALIFORNIA IS FORECAST BY ALL THE GLOBAL MODELS TO
REACH ITS MOST SOUTHERN EXTENT BY 24 HOURS THEN SLOWLY FILL
AND LIFT OUT TO THE NORTHEAST OR EAST OVER THE NEXT 5 DAYS. THIS
ALLOWS THE SUBTROPICAL RIDGE LOCATED OVER THE GULF OF MEXICO AND
NORTHERN MEXICO TO SLOWLY BUILD/SHIFT TO THE WEST AND SOUTHWEST
OVER THE EASTERN NORTH PACIFIC. THE BUILDING RIDGE TO THE NORTH OF
TD-16E SHOULD ACT TO FORCE THE CYCLONE IN A GENERAL WEST OR
WEST-SOUTHWESTWARD DIRECTION. THE OFFICIAL FORECAST TRACK IS
AN UPDATE TO THE PREVIOUS TRACK...EXCEPT THAT THE FORECAST FOR THE
FIRST 24 HOURS IS ADJUSTED TO THE RIGHT BASED ON AN EXTRAPOLATION
OF THE CURRENT MOTION. 

THE CYCLONE IS FORECAST TO REMAIN OVER WARM SSTS FOR THE NEXT 5
DAYS. THE CURRENT VERTICAL SHEAR OF 22 KT IS EXPECTED TO SLOWLY
DECREASE TO 15 KT IN 36 HOURS AND TO 10-15 KT THROUGH DAY 5.
THE OFFICIAL FORECAST WHICH LEANS TOWARD THE SHIPS GUIDANCE CALLS
FOR STRENGTHENING TO A TROPICAL STORM IN 48 HOURS. HOWEVER SINCE
THE SYSTEM IS NEAR THE THRESHOLD OF TROPICAL STORM STATUS...IT 
COULD BECOME ONE MUCH SOONER IF THE SHEAR RELAXES JUST A LITTLE BIT. 

FORECASTER COBB/FRANKLIN
 
FORECAST POSITIONS AND MAX WINDS
 
INITIAL      16/1500Z 11.3N 103.2W    30 KT
 12HR VT     17/0000Z 11.4N 103.8W    30 KT
 24HR VT     17/1200Z 11.4N 104.6W    30 KT
 36HR VT     18/0000Z 11.1N 105.5W    30 KT
 48HR VT     18/1200Z 10.7N 106.5W    35 KT
 72HR VT     19/1200Z 10.0N 109.0W    35 KT
 96HR VT     20/1200Z 10.0N 112.0W    40 KT
120HR VT     21/1200Z 10.0N 116.0W    40 KT
 
 
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