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Text Update
Prapiroon (Bagyong Nina) has weakened to a Tropical Storm as it meanders across the Philippine Sea. The storm was last located approximately 830km east northeast of Basco, Batanes or about 530km south southeast of Okinawa. Maximum sustained winds are down to 110kph with gusts of up to 140kph. Prapiroon is moving west southwestward at 15kph.
IR Image from NRLMRY
Latest satellite image shows convective activity is weakening, especially along the northern periphery. The remaining convective activity is fragmented and is confined to the southern half of the system. A combination of dry air, cooler waters, and slightly stronger wind shear is leading to the slow weakening that we are seeing today.
Forecast Track (NOT OFFICIAL!)
Tropical Storm Prapiroon currently remains in an area of weak steering environment. However, we expect the system to start turning northward by tomorrow as a trough dives down from Eastern China. Prapiroon is forecast to pass between Okinawa and the Daito Islands by Thursday or Friday as a weakening Tropical Storm. By Saturday, Prapiroon should then turn northeastward and accelerate along the way. Prapiroon is then forecast to rapidly weaken as it passes well south of the Mainland Japanese Islands.
Kadena Air Base is now under TCCOR 3, please listen to your local officials for the latest updates and warnings in your area. We'll have another update on Prapiroon tomorrow.
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Issued (0930 UTC) 530pm PhT 101612
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