Hurricane Guillermo Moving West-Northwest20.6N 144.1W
Guillermo (10E) strengthened to become the fourth hurricane of the season on August 14th, concurrent to the development of a good, banding type eye. That afternoon, the system strengthened to a Category 2 hurricane with maximum winds increasing to 100 mph (155 km/h).
Early on August 15, Guillermo intensified to become the second major hurricane of the season, as it was upgraded by the NHC to a Category 3 hurricane, with maximum winds increasing to 115 mph (185km/h).
As of 5 p.m. HST August 16 (0300 UTC August 17), the center of Hurricane Guillermo is estimated to be located about 890 mi (1430 km) east of Hilo, Hawaii. Hurricane Guillermo has maximum sustained winds of 65 kt (75 mph, 120 km/h), with higher gusts.
The system has a minimum central pressure of 985 mbar (29.09 inches), and is moving west-northwest at 13 kt (15 mph, 24 km/h). Hurricane force winds extend up to 35 miles (55 km) from the center of Guillermo, and tropical storm force winds up to 105 miles (170 km) from the center.