page_title: Typhoon Tingting
section_title: Meteorological history
hierarchical_section_title: Typhoon Tingting / Meteorological history
context_page_description: Typhoon Tingting was a destructive tropical cyclone that produced record-breaking rains in Guam. The eighth named storm of the 2004 Pacific typhoon season, Tingting originated from a tropical depression over the open waters of the western Pacific Ocean. The storm gradually intensified as it traveled northwest, becoming a typhoon on June 28 and reaching its peak the following day while passing through the Mariana Islands. After maintaining typhoon intensity for three days, a combination of dry air and cooler sea surface temperatures caused the storm to weaken as it traveled northward. On July 1, the storm passed by the Bonin Islands, off the coast of Japan, before moving out to sea. By July 4, Tinting had transitioned into an extratropical cyclone. The remnants were last reported by the Japan Meteorological Agency, the Regional Specialized Meteorological Center for the western Pacific basin, near the international date line on July 13.
  While passing through the Mariana Islands, Typhoon Tingting produced torrential rains which triggered flooding and numerous landslides. In Guam, 554.99 mm of rain fell in 24 hours, breaking the daily and monthly rainfall records for June.
context_section_description: On June 24, 2004, an area of low pressure associated with developing convection formed about 1,110 km (690 mi) to the east-southeast of Guam. Early the next day, as the system began to intensify, the Japan Meteorological Agency (JMA) began monitoring the low pressure as a tropical depression. With low wind shear and favorable diffluence, the Joint Typhoon Warning Center (JTWC) issued a Tropical Cyclone Formation Alert for the storm at 0000 UTC, classifying it as Tropical Depression 11W twelve hours later. The depression traveled towards the northwest along the edge of a mid-latitude ridge. Outer bands began developing around the system, although the ridge to its north restricted outflow. About 24 hours after the JMA designated the depression, the agency upgraded it to a tropical storm and named it Tingting, which was contributed by Hong Kong and is a fairly common pet name for young girls. At 0600 UTC on June 26, the JTWC also classified Tingting as a tropical storm.
  As Tingting tracked northwestward, it continued to develop outflow in all directions. The storm slowly intensified as it traveled towards the Mariana Islands, strengthening into a severe tropical storm early on June 27. Later that day, a ragged eye began to form. The ridge influencing the track of Tingting moved eastward, causing the storm to begin a gradual turn towards the north At 0000 UTC on June 28, the JTWC upgraded the storm to a minimal typhoon, the equivalent of a Category 1 hurricane on the Saffir-Simpson Hurricane Scale, and the JMA followed about six hours later. Several hours later, Tingting passed through the central Mariana Islands, tracking near the small island of Sarigan, while continuing to intensify. At 0900 UTC, the typhoon reached its peak intensity with winds of 150 km/h (90 mph) according to both agencies and a minimum pressure of 955 hPa (mbar). With low wind shear, further strengthening was anticipated as it neared the Bonin Islands. However, the typhoon began to weaken due to increasing dry air and decreasing sea surface temperatures. On June 30, Tingting passed within 95 km (60 mi) east of Iwo Jima. Later that day, the storm's eye dissipated as convection around the center of circulation weakened.
  On July 1, the JTWC downgraded Tingting to a tropical storm. At 1200 UTC the following day, the JMA downgraded the storm to a severe tropical storm as winds decreased below 120 km/h (75 mph 10-minute winds). Convection associated with the storm began to diminish as Tingting began to undergo an extratropical transition. Although the storm maintained its intensity as a severe tropical storm, it was moving into increasingly unfavorable conditions and weakening was anticipated. As Tingting tracked towards the northeast into the mid-latitude westerlies, it completed its extratropical transition on July 4. After becoming an extratropical cyclone, Tingting accelerated towards the north before abruptly stalling near the Kamchatka Peninsula. On July 6, the extratropical remnants of Tingting were absorbed by a developing area of low pressure located to the south of the former typhoon. However, the JMA continued to monitor Tingting as a separate system as it executed a counter-clockwise loop though July 10 before heading towards the international date line. The storm was last reported on July 13 to the west Aleutian Islands.
caption: Typhoons Mindulle and Tingting on June 30
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