Issued (11 UTC) 7pm PhT 072914
Tropical Depression 11W continues to rapidly intensify and is now Tropical Storm Halong. The system was last located approximately 290km southeast of Saipan or about 320km east of Guam. Maximum sustained winds are now at 85kph with gusts of up to 110kph. TS Halong is moving northwestward at 15kph.
The National Weather Service has now issued a Typhoon Warning for Rota. A Typhoon Watch is in effect for Guam. While a Tropical Storm Warning is in effect for Guam, Tinian, and Saipan. Please follow the warnings of your local officials!
IR Image from NRLMRY
Latest satellite image shows Halong continuing to consolidate with strong convective banding wrapping around the center. Equatorward outflow remains excellent and overall environment remains conducive for further intensification. As the system moves closer to the islands, stronger winds are being reported across Guam. Winds of up to 50kph (30mph) are already being felt and will only increase as the night goes on.
Radar Image from Guam
Latest radar image from Guam shows bands of light to moderate rains moving across the island. These rain showers will continue to spread into the nearby islands tonight and into tomorrow. A developing eye can also be seen from the radar image above supporting the intensity estimates based on satellite imagery.
For the latest radar images and warnings for Guam, please click HERE (NWS Website)
Tropical Storm Halong will continue intensifying as it moves closer to the Mariana Islands. Based on current trends, the system could become a Typhoon by tomorrow as it moves near the island of Rota. Winds of up to 100kph and rainfall amounts of up to 100mm are possible across Guam, Saipan, and nearby islands. Please prepare and heed the warnings of your local officials!
We'll have another update tomorrow morning.