Tuesday, June 30, 2015

Tropical Storm Chan-Hom Update #1

Issued (00 UTC) 8am PhT 070115

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As expected, a new Tropical Cyclone has formed in the Western Pacific today. Tropical Storm Chan-Hom is the ninth-named cyclone in the region this year. The circulation center of Chan-Hom was last located approximately 370km north of the island of Pohnpei. Maximum sustained winds are estimated to be around 65kph with gusts of up to 85kph. TS Chan-Hom is currently moving west northwestward at 10kph.

IR Image from NRLMRY

Latest satellite image shows a huge burst of convective activity associated with Tropical Storm Chan-Hom. However, much of this convection is still displaced west of the low-level circulation center. Moderate easterly wind shear is still hindering faster development but the wind shear is forecast to abate as Chan-Hom moves westward.

Based on the latest computer model outputs, coupled with the current atmospheric pattern in the Western Pacific, Tropical Storm Chan-Hom is forecast to continue moving generally west northwestward, intensifying along the way. It is likely that the system may attain typhoon-status as it nears the Mariana Islands later this week. Residents in the region are advised to keep a close eye on the development of this new cyclone.

We'll have another update later today.

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