Saturday, October 15, 2011

Tropical Update

Tropical Depression Banyan (Ramon) has dissipated this morning due to strong wind shear caused by a trough that moved in from China. There is still a closed circulation, however, based on ASCAT data. Ship reports near the low pressure are indicating winds of 30 to 40kph. Those observations together with IR images from satellite do suggest that former-Banyan might still be hanging on for dear life. We'll just have to wait and see if conditions improve enough for it to re-strengthen again.

Another area we are watching is Invest 93W which is currently located approximately 450km northwest of Guam. Latest microwave data suggests banding near the low-level center. The most recent ASCAT data has not picked up strong winds, however. Convection is pretty good and conditions are somewhat favorable for further development. As we have mentioned yesterday, though, 93W doesn't have a lot of support from computer models.

Issued (08 UTC) 4pm PhT 101511

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