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Typhoon Judy of July 1989 was a strong tropical cyclone that caused extensive damage and loss of life in Japan, South Korea and the eastern Soviet Union. Originating from a monsoon trough on July 21, Judy began as a tropical depression west of the Northern Mariana Islands. Tracking west-northwest, the system gradually intensified into a tropical storm and was given the name Judy on July 23. By this time, the storm had turned due north. Two days later, Judy attained typhoon status as it began a gradual turn to the west-northwest. Late on July 25, the storm peaked with winds of 165 km/h (110 mph). Striking Kyushu on July 27, interaction with the island's mountainous terrain caused Judy to quickly weaken as it neared South Korea. The weakened storm struck the country west of Pusan the following day before losing its identity near the border with North Korea. The remnants of Judy were last noted over the Sea of Japan. In Japan, damaging winds from the typhoon left approximately 4 million people without power. Significant flooding in the country resulted in 11 deaths and $28.9 million in damage. In South Korea, heavy rains from the storm exacerbated ongoing floods, leading to at least 20 fatalities. Flooding from the remnants of Judy affected the Soviet Far East, temporarily severing the Trans-Siberian Railway and killing 15 people. ==Meteorological history== In mid-July, a monsoon trough located west of the Northern Mariana Islands produced two tropical disturbances. The first of these tracked due west and later became Tropical Storm Irving. The second of these disturbances remained poorly organized and development into a tropical cyclone was expected to be slow. By July 21, an area of low pressure formed within the system and convection associated with it increased. Situated underneath an anticyclone, upper-level outflow also improved. Following further organization of the system, the Joint Typhoon Warning Center (JTWC) issued their first advisory on Tropical Depression 11W on July 21; at this time, the depression was located about 555 km (345 mi) west of Guam. Further aided by a tropical upper tropospheric trough to the northwest, the depression intensified into a tropical storm on July 23 and was assigned the name Judy by the JTWC. On July 23, a subtropical ridge to the northeast of Judy caused the system to turn northward. This turn was not well anticipated by tropical cyclone forecast models. By July 25, satellite imagery indicated that Judy had intensified into a typhoon. Within hours of reaching this strength, the a weather buoy near the storm recorded a barometric pressure of 974 mb (hPa; 28.76 inHg) and winds of . Strengthening continued throughout the day and Judy soon attained its peak intensity as a Category 2 equivalent typhoon on the Saffir–Simpson Hurricane Scale, with maximum sustained winds estimated at 175 km/h (110 mph).〔 Around this time, the Japan Meteorological Agency assessed the typhoon to have attained ten-minute sustained winds of 155 km/h (100 mph) and a pressure of 940 mbar (hPa; 27.76 inHg). On July 26, the typhoon turned towards the northwest and weakened somewhat. Late the next day, Judy struck the southern coast of Kyushu before moving over the Korea Strait. Interaction with the mountainous terrain of the island caused the storm to degenerate. Less than a day after moving over Kyushu, the system weakened to a tropical storm and soon made landfall in South Korea, roughly 205 km (125 mi) west of Pusan. Once onshore, rapid weakening took place with Judy being downgraded to a tropical depression within 12 hours. The remnants of Judy were last noted on July 29 over the Sea of Japan.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Typhoon Judy (1989)」の詳細全文を読む スポンサード リンク
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