Officials on Thursday declared Tropical Cyclone Condition of Readiness Storm Watch at Sasebo Naval Base, Japan, on the coast of southwestern Kyushu, based on predictions that Typhoon Namtheun will pass over, or just south, of the island.
“We are very confident the base should not receive potentially damaging winds based on the current model,” said Petty Officer 1st Class Aaron Kawczk from the Naval Pacific Meteorology and Oceanography Sasebo Detachment.
The typhoon on Wednesday was predicted to move toward Iwakuni Marine Corps Air Station, which entered TCCOR III Thursday. However, by late afternoon Thursday forecasts indicated the storm would not create damaging conditions on the air station, which is in southern Honshu island.
Thursday afternoon the typhoon was 253 miles south of Tokyo moving at 4.6 mph with winds of 92 mph gusting to 115 mph.
Because Namtheun is a slow-moving storm, it remains uncertain when it will affect Sasebo, forecasters said; it could be Sunday or Monday.
“This is not like the typhoons we usually see moving quickly through our area,” Kawczk said.