779
WTPZ41 KNHC 260845
TCDEP1
TROPICAL STORM EMILIA DISCUSSION NUMBER 20
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL EP062006
200 AM PDT WED JUL 26 2006
SATELLITE IMAGERY SUGGESTS THAT EMILIA HAS MAINTAINED ITS
NEAR-HURRICANE INTENSITY WITH A SMALL CENTRAL DENSE OVERCAST. A TRMM
MICROWAVE IMAGE ALSO SUGGESTS THAT THE SYSTEM HAS A PARTIAL
EYEWALL. A BLEND OF CI AND DATA-T NUMBERS FROM TAFB...SAB...
AFWA...AND CIMSS' ADT GIVE A CURRENT INTENSITY OF 60 KT WHICH IS
UTILIZED HERE. EMILIA'S MOTION IS BEGINNING TO TURN MORE TOWARD
THE NORTHWEST AND THE BEST ESTIMATE OF THE INITIAL MOTION IS
325/10.
EMILIA IS LIKELY TO BEGIN ITS DECAY SHORTLY AS IT IS CURRENTLY OVER
25C SSTS AND WILL MOVE OVER INCREASINGLY COOLER WATERS.
ADDITIONALLY... MODERATE NORTHEASTERLY SHEAR AND A STABLE AIRMASS
SHOULD CONTRIBUTE TO EMILIA'S WEAKENING. THE INTENSITY FORECAST
CLOSELY FOLLOWS THE STATISTICAL SHIPS MODEL GUIDANCE.
CURRENTLY...EMILIA'S NORTHWESTWARD TRACK IS BEING CAUSED BY THE
COMBINATION OF A DEEP-LAYER RIDGE TO ITS NORTH AND A WEAK LOW TO
MID-LEVEL CYCLONIC GYRE TO ITS SOUTHWEST. AS EMILIA WEAKENS...IT
SHOULD BE STEERED MORE TO THE WEST-NORTHWEST BY THE LOW-LEVEL FLOW.
THE TRACK GUIDANCE IS TIGHTLY CLUSTERED AND THE FORECAST IS JUST TO
THE RIGHT OF THE CONSENSUS.
EMILIA WILL LIKELY CONTINUE TO PARALLEL THE WEST COAST OF BAJA
CALIFORNIA AND TROPICAL STORM FORCE WINDS COULD REACH THE COAST.
THEREFORE...THE TROPICAL STORM WARNING HAS BEEN EXTENDED NORTHWARD.
FORECAST POSITIONS AND MAX WINDS
INITIAL 26/0900Z 24.0N 112.5W 60 KT
12HR VT 26/1800Z 25.2N 113.5W 50 KT
24HR VT 27/0600Z 26.3N 115.0W 40 KT
36HR VT 27/1800Z 27.0N 116.7W 30 KT
48HR VT 28/0600Z 27.5N 118.0W 25 KT...REMNANT LOW
72HR VT 29/0600Z 28.0N 119.5W 20 KT...REMNANT LOW
96HR VT 30/0600Z...DISSIPATED
$$
FORECASTER AVILA/LANDSEA
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