721
WTPZ44 KNHC 241500
TCDEP4
TROPICAL DEPRESSION NINE-E DISCUSSION NUMBER 4
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
ISSUED BY THE HYDROMETEOROLOGICAL PREDICTION CENTER CAMP SPRINGS MD
8 AM PDT TUE AUG 24 2004
THE CENTER OF THE TROPICAL DEPRESSION CONTINUED TO BE OFFSET FROM
THE AREA OF CONVECTION TO ITS NORTH AS INDICATED BY CONVENTIONAL IR
IMAGES. AN INTENSITY ESTIMATE OF T2.0 ISSUED BY SAB SUPPORTS AN
INITIAL INTENSITY OF THE SYSTEM THIS MORNING AT 30 KNOTS.
THE TRACK FORECAST HAS REMAINED RELATIVELY UNCHANGED FROM THE
PREVIOUS FORECAST. THE SYSTEM APPEARS TO BE REASONABLY SLOW MOVING
WITH AN INITIAL MOTION OF 315/03...JUST SOUTH OF A COL IN THE MID-
LEVEL FLOW. THE OFFICIAL FORECAST MOVES THE DEPRESSION ON A
NORTHWEST TRACK FOR THE FIRST 24 HOURS BEFORE THE SUBTROPICAL RIDGE
BUILDS TO ITS NORTH...LIMITING ITS NORTHWARD MOTION. THE GLOBAL
MODELS ARE GENERALLY MORE SOUTHERLY WITH THE TRACK THAN THE NHC
MODEL SUITE. AT THIS TIME...THE OFFICIAL FORECAST ASSUMES THE
RIDGE WILL BUILD TO THE NORTH AND STEER THE SYSTEM ON A WESTERLY
TRACK AFTER 24 HOURS.
THE SLOW-MOVING DEPRESSION IS FORECAST TO STRENGTHEN SLIGHTLY OVER
THE FIRST 24 HOURS UNDER WEAK SHEAR AND MARGINAL SEA SURFACE
TEMPERATURES. THE DEPRESSION SHOULD ENCOUNTER INCREASED
SOUTHWESTERLY FLOW ALOFT AROUND 36 HOURS. THIS INCREASED SHEAR
COUPLED WITH SEA SURFACE TEMPERATURES BELOW 26C SHOULD WEAKEN THE
SYSTEM.
CLARK
FORECAST POSITIONS AND MAX WINDS
INITIAL 24/1500Z 18.7N 124.3W 30 KT
12HR VT 25/0000Z 19.1N 124.7W 30 KT
24HR VT 25/1200Z 19.4N 125.8W 35 KT
36HR VT 26/0000Z 19.5N 127.0W 35 KT
48HR VT 26/1200Z 19.5N 128.5W 30 KT
72HR VT 27/1200Z 19.6N 132.0W 30 KT
96HR VT 28/1200Z 19.6N 135.5W 25 KT...REMNANT LOW
120HR VT 29/1200Z 19.6N 139.5W 25 KT...REMNANT LOW
$$
Return to the Tropical Systems Page for NINE-E
Back to main Tropical Weather page
This page is maintained voluntarily by the MKWC and the UHMET faculty, staff, and students.
It was last modified on: Thu, Jul 23 2020 - 2003 UTC
Send comments to: Ryan Lyman
|