Tropical Depression 04W Update #1

Edited at 330pm PhT: Invest 98W has just been upgraded by the JTWC into a Tropical Depression. Sustained winds are at 55kph. TD 04W is moving WNW at 5kph.

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Invest 98W is now on the verge of becoming a tropical depression. JTWC has already issued a Tropical Cyclone Formation Alert for 98W. It could be upgraded as early as tonight (5pm update by JTWC perhaps). The system is about 650km SSW of Guam or 2400 km east of Manila. Computer models forecast the storm to move west northwestward, slowly strengthening along the way.

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Issued (07 UTC) 3pm PhT 052011