231500Z POSITION NEAR 26.4N 118.9E. TROPICAL STORM 10W (MATMO), LOCATED APPROXIMATELY 142 NM WEST- NORTHWEST OF TAIPEI, TAIWAN, HAS TRACKED NORTHWESTWARD AT 10 KNOTS OVER THE PAST SIX HOURS. THE SYSTEM CONTINUES TO DEGENERATE AS IT TRAVERSES NORTH IN EASTERN CHINA ALONG THE WESTERN PERIPHERY OF THE SUBTROPICAL RIDGE OVER SITUATED OVER THE RYUKYU ISLAND CHAIN. MATMO IS FORECAST TO CONTINUE TO WEAKEN DUE TO THE INFLUENCE OF TOPOGRAPHICAL FRICTION AND THE MID-LATITUDE TROUGH APPROACHING FROM THE NORTHWEST. COMPLETE DISSIPATION OF THE SYSTEM IS EXPECTED OVER LAND, APPROXIMATELY 150NM WEST OF SHANGHAI IN THE NEXT 24 HOURS AS IT IS ABSORBED IN THE MID-LATITUDE BOUNDARY CURRENTLY LOCATED NORTH OF THE SYSTEM. THIS IS THE FINAL WARNING ON THIS SYSTEM BY THE JOINT TYPHOON WRNCEN PEARL HARBOR HI. THE SYSTEM WILL BE CLOSELY MONITORED FOR SIGNS OF REGENERATION.