Issued (0430 UTC) 1230pm PhT 051515
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Typhoon Dolphin has slightly weakened this morning as it moves closer to the Northern Mariana Islands. The center of Typhoon Dolphin was last located approximately 720km southeast of Saipan or about 740km east southeast of Guam. Maximum sustained winds are at 140kph with gusts of up to 175kph. Typhoon Dolphin is currently moving west northwestward at a speed of 20kph.
The National Weather Service has issued a Typhoon Warning for Guam and Rota while a Typhoon Watch is issued for Saipan and Tinian. Residents are advised to complete their preparations for the incoming typhoon. Always consult with your local emergency management officials and the NWS for the latest official weather forecasts and warnings.
Click HERE for the NWS Guam Website
IR Image from NRLMRY
Latest satellite image shows convection has slightly waned, especially around the center of circulation. Dolphin is currently sorting out structural issues with the inner eyewall collapsing and a possible new and larger eyewall forming. We expect Dolphin to re-intensify this evening and could still reach Category 3 intensity before it moves near the Mariana Islands tomorrow.
Official Forecast from NWS-Guam
Above is the official forecast track from the National Weather Service. Their current forecast track is showing Dolphin moving between Rota and Guam by midday on Friday (local time). Typhoon-force winds of up to 130mph (210kph) are possible although the exact wind impacts are still uncertain. Slight shifts in the track can alter which islands will get the strongest winds. Aside from the winds, heavy rains and high surf should also be expected to dominate the weather tomorrow.
Dolphin will start moving away from the Marianas tomorrow evening and weather conditions should improve by Saturday.
We'll have another update later tonight. Stay safe!