ZCZC MIATCDEP3 ALL TTAA00 KNHC DDHHMM TROPICAL DEPRESSION MARTY DISCUSSION NUMBER 22 NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 2 AM PDT WED SEP 24 2003 ALTHOUGH MARTY IS GENERATING NO DEEP CONVECTION...IT IS STILL EXHIBITING A WELL-DEFINED LOW CLOUD SWIRL WITH A FEW RAINBANDS VISIBLE ON THE YUMA ARIZONA RADAR. A RECENT QUIKSCAT PASS SHOWED A COUPLE OF 30 KT VECTORS IN THE NORTHERN GULF OF CALIFORNIA...AND SO THAT WILL REMAIN THE ADVISORY INTENSITY. THE INITIAL MOTION IS JUST ABOUT STATIONARY. MARTY IS TRAPPED IN A WEAK STEERING CURRENT SOUTH OF A MID-LEVEL ANTICYCLONE CENTERED OVER NEVADA. NEITHER THE GFS NOR THE UKMET MOVE THEIR RESPECTIVE 850 MB VORTICITY CENTERS MUCH OVER THE NEXT DAY OR SO...AND THE OFFICIAL FORECAST LIKEWISE CALLS FOR LITTLE MOTION WHILE THE CIRCULATION DISSIPATES. WATER VAPOR IMAGERY SHOWS DRIER AIR BEGINNING TO OVERTAKE THE CIRCULATION FROM THE SOUTH...AND THIS HOPEFULLY WILL SOON BEGIN TO REDUCE THE RAINFALL BEING GENERATED BY THE DEPRESSION. FORECASTER FRANKLIN FORECAST POSITIONS AND MAX WINDS INITIAL 24/0900Z 30.8N 113.5W 30 KT 12HR VT 24/1800Z 31.0N 113.5W 25 KT...DISSIPATING 24HR VT 25/0600Z 31.0N 113.5W 20 KT...REMNANT LOW 36HR VT 25/1800Z 31.0N 113.5W 20 KT...REMNANT LOW 48HR VT 26/0600Z...DISSIPATED NNNN
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Page last modified: Monday, 07-Feb-2005 16:49:59 UTC