During the year , the Japan Meteorological Agency ( JMA ) issued advisories on tropical cyclones west of the International Date Line to the Malay Peninsula , and north of the equator ; this was due to the agency 's status as the official Regional Specialized Meteorological Center , as designated by the World Meteorological Organization in 1989 . The JMA issued forecasts and analyses four times a day , beginning at 0000 UTC and continuing every six hours . The JMA issued forecasts based on a climatological tropical cyclone forecast model . The agency estimated 10 minute sustained winds and barometric pressure based on the Dvorak technique and numerical weather prediction . The JTWC also issued warnings on storms within the basin , operating from Pearl Harbor in Hawaii to represent the interests of the United States Armed Forces in the Indian and Pacific Oceans .