Monday, August 6, 2012

Tropical Depression 13W Update #2

Tropical Depression 13W remains weak as it moves across the middle of the Pacific. 13W was last located approximately 900km north northwest of Wake Island. Maximum sustained winds are approximately at 55kph with gusts of up to 75kph. TD 13W is currently moving north northwestward at 15kph.

IR Image from NRLMRY

Latest satellite image shows the system and its partially exposed center. The system seems to be exhibiting subtropical characteristics and doesn't seem to be consolidating that well. Convective activity remains weak despite the good outflow and weak wind shear. JMA has actually given their final warning on this system while JTWC continues to classify 13W as a Tropical Storm.

TD 13W will continue tracking to the north. It will start moving in an area of higher wind shear and cooler waters. We no longer expect 13W to intensify further although the system could remain intact as it turns westward by Friday. Some models are showing 13W (or its remnants) nearing the eastern coast of Honshu or Hokkaido by the middle of next week, although that seems unlikely at this point.

We'll have another update on 13W tomorrow.
Issued (0930 UTC) 530pm PhT 080612

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