Saturday, July 4, 2015

Tropical Storm Chan-Hom Update #7

Issued (22 UTC) 6am PhT 070515

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Tropical Storm Chan-Hom is now moving near the Marianas Islands this morning. The storm center was last located approximately 80km northeast of Guam or about 170km south of Saipan. Maximum sustained winds are at 85kph with gusts of up to 110kph. TS Chan-Hom is moving west northwestward at 15kph.

The National Weather Service has issued a Typhoon Warning for Saipan and Tinian. A Tropical Storm Warning is in effect for Rota and a Typhoon Watch for Guam. Please adhere to the latest local statements and bulletins from the National Weather Service. 

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IR Image from NRLMRY

Latest satellite image shows Tropical Storm Chan-Hom moving near the Marianas Islands. Strong convection associated with the storm continue to move across, especially in Guam, Rota, and Saipan. The low-level center is also bringing strong winds across the region with 40-mph (65kph) winds being reported in Saipan while Guam is reporting 30-mph winds. We expect these stormy conditions to persist over the next 6 hours or so as Chan-Hom makes its way across the archipelago.

Radar Image from NWS

Latest radar image out of Guam shows the center of Chan-Hom (highlighted) moving very near the island of Rota. Surrounding this center are bands of light to moderate rains (green-lighter rains, yellow/oranges-heavier rains) moving across Guam and nearby islands. Rainfall accumulations of 50-100mm (2 to 6 inches) are possible throughout the day today as Chan-Hom moves through.

Tropical Storm Chan-Hom will continue moving west northwestward and should start moving away from the Mariana Islands later tonight with quieter weather expected for the Marianas Islands later tomorrow (Monday). Chan-Hom will then head towards the Southern Japanese Islands, possibly affecting the region by Wednesday or Thursday.

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