599
WTPZ45 KNHC 260241
TCDEP5
HURRICANE ILEANA DISCUSSION NUMBER 19
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL EP102006
800 PM PDT FRI AUG 25 2006
AN EYE WAS STILL BARELY APPARENT AT 00Z...AND DVORAK DATA-T NUMBERS
WERE STILL 4.0 WHICH SUPPORTS MAINTAINING THE ADVISORY INTENSITY AT
65 KT. SINCE THEN...HOWEVER...THE EYE HAS COMPLETELY DISAPPEARED
AND THE CLOUD TOPS HAVE WARMED A LITTLE...SO ILEANA WILL PROBABLY
WEAKEN TO A TROPICAL STORM SHORTLY. SSTS BENEATH THE SYSTEM ARE
NEAR 25 CELSIUS AND WILL CONTINUE TO COOL ALONG THE FORECAST TRACK
DURING THE NEXT COUPLE OF DAYS. THEREFORE A STEADY WEAKENING IS
FORECAST AND ILEANA IS EXPECTED TO DEGENERATE TO A REMNANT LOW
WITHIN ABOUT 48 HOURS. THE OFFICIAL INTENSITY FORECAST IS CLOSE TO
THE SHIPS GUIDANCE.
THE INITIAL MOTION HAS NOT CHANGED MUCH AND THE CURRENT ESTIMATE IS
310/6. A TURN TO THE LEFT OR WEST IS ANTICIPATED DURING THE NEXT
24 TO 36 HOURS AS THE WEAKENING TROPICAL CYCLONE BECOMES
INCREASINGLY SHALLOW AND STEERED BY THE LOW-LEVEL EASTERLIES. THE
EVENTUAL REMNANT LOW SHOULD CONTINUE WESTWARD AT ABOUT 6 KT UNTIL
IT DISSIPATES IN 3 TO 4 DAYS.
FORECAST POSITIONS AND MAX WINDS
INITIAL 26/0300Z 22.3N 117.9W 65 KT
12HR VT 26/1200Z 22.7N 118.7W 55 KT
24HR VT 27/0000Z 23.0N 119.9W 45 KT
36HR VT 27/1200Z 23.1N 121.3W 35 KT
48HR VT 28/0000Z 23.2N 122.7W 25 KT...REMNANT LOW
72HR VT 29/0000Z 23.5N 125.5W 25 KT...REMNANT LOW
96HR VT 30/0000Z...DISSIPATED
$$
FORECASTER KNABB
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