ZCZC MIATCDEP3 ALL TTAA00 KNHC DDHHMM TROPICAL DEPRESSION MARTY DISCUSSION NUMBER 20 NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 2 PM PDT TUE SEP 23 2003 SATELLITE IMAGERY SHOWS THAT THERE IS NO LONGER ANY DEEP CONVECTION ASSOCIATED WITH MARTY AND THE LOW-LEVEL CENTER IS POORLY DEFINED. MARTY IS DOWNGRADED TO A TROPICAL DEPRESSION AND ALL WARNINGS ARE DISCONTINUED. THE CENTER POSITION WAS LOCATED FROM THE YUMA RADAR WHICH SHOWS THE NORTHERN HALF OF WHAT APPEARS TO BE A CIRCULATION CENTER LOCATED OVER THE NORTHERN GULF OF CALIFORNIA. AND EVEN THE RADAR PRESENTATION WAS LOOKING SLOPPY BY 19Z. THE INITIAL MOTION ESTIMATE HAS SLOWED TO 330/03 AS SUGGESTED BY EARLIER GUIDANCE. THE LATEST GUIDANCE SHOWS THE DEPRESSION EMBEDDED IN WEAK STEERING CURRENTS AND MEANDERING NEAR THE FAR NORTHERN GULF OF CALIFORNIA UNTIL DISSIPATION IN A DAY OR SO...IF NOT SOONER. SOME RAIN HAS SPREAD ACROSS THE BORDER INTO SOUTHERN ARIZONA AND UP TO 4 INCHES IS POSSIBLE DURING THE NEXT DAY OR TWO OVER THE EXTREME SOUTHERN PORTIONS OF THE SOUTHWESTERN UNITED STATES. FORECASTER LAWRENCE FORECAST POSITIONS AND MAX WINDS INITIAL 23/2100Z 30.1N 113.7W 30 KT 12HR VT 24/0600Z 30.3N 113.8W 25 KT...DISSIPATING 24HR VT 24/1800Z 30.5N 114.0W 20 KT...REMNANT LOW 36HR VT 25/0600Z 30.5N 114.0W 20 KT...REMNANT LOW 48HR VT 25/1800Z...DISSIPATED NNNN
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Page last modified: Monday, 07-Feb-2005 16:49:59 UTC