JTWC 5 am update TROPICAL STORM (TS) 10W (MATMO), LOCATED APPROXIMATELY 244 NM NORTH-NORTHWEST OF KOROR, PALAU, HAS TRACKED WESTWARD AT 09 KNOTS OVER THE PAST SIX HOURS.... THE CYCLONE IS TRACKING WESTWARD ALONG THE SOUTHERN EXTENSION OF A BUILDING SUBTROPICAL RIDGE (STR) TO THE NORTHEAST. TS 10W WILL BEGIN TRACKING MORE NORTHWESTWARD AS THE STR BECOMES THE DOMINANT STEERING INFLUENCE IN THE NEXT 36-48 HOURS. AFTERWARDS, A SHORTWAVE TROUGH APPROACHING FROM THE NORTHWEST WILL WEAKEN THE STR AND CAUSE A SLIGHTLY MORE POLEWARD TRACK TOWARDS TAIWAN. THE VWS IS EXPECTED TO RELAX AND POLEWARD OUTFLOW TO INCREASE AS THE SYSTEM GAINS LATITUDE. THESE, PLUS WARM SEA SURFACE TEMPERATURES IN THE PHILIPPINE SEA WILL PROMOTE GRADUAL INTENSIFICATION, REACHING 80 KNOTS BY TAU 72....
Posted on: Fri, 18 Jul 2014 21:18:54 +0000
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