The Development Process of Typhoon Ute
On August 8, 213, a tropical disturbance formed in the sea off the southwest of Guam. Joint typhoon warning center gave the disturbance number 96W. At 2pm, joint typhoon warning center rated its chances of becoming a tropical cyclone within 24 hours as "LOW". At 8 pm, the Japan Meteorological Agency upgraded it to a tropical depression. At 9 pm, joint typhoon warning center upgraded the development probability to "MEDIUM".
At 4: pm on August 9th, joint typhoon warning center issued a tropical cyclone warning due to the rapid integration of the disturbed cloud system and obvious helicity. At 2 am, the Japan Meteorological Agency issued a gale warning. At 5: a.m., joint typhoon warning center upgraded it to a tropical depression and gave it the number 11W. The Hong Kong Observatory said at 4: 45 a.m. that "a low pressure area is bringing unstable weather to the waters east of the Philippines", and at 7: 45 a.m. that "the pressure in the waters east of the Philippines is quite low, and a tropical depression seems to be forming", and finally it was upgraded to a tropical depression at 4 p.m.. On August 14th, 213, Ute moved to the north-northwest direction, but its eye wall structure suddenly disintegrated for no reason, especially in the northeast. The Hong Kong Observatory downgraded Uttar to a typhoon at 2: 45pm. At 3: 5 pm, Ute landed again on the coast of Xitou Town, Yangxi County, Yangjiang City, Guangdong Province, China. Ute continues to move northwest or north-northwest At 5 pm, joint typhoon warning center downgraded it to a first-class typhoon. At 8: 55 pm, the Japan Meteorological Agency downgraded it to a strong tropical storm. At 11 pm, joint typhoon warning center issued the final alarm. However, in the case of active southerly airflow providing water vapor, the circulation in the south of Ute after landing is still solid, bringing heavy rain to the south of the landing point (Yangjiang and Leizhou Peninsula). There is a high pressure area on the land near Vietnam, which forms a saddle-shaped pressure field with the subtropical high ridge. Ute changed its route to the west after landing until the evening of the same day, and kept slowing down because it was in the saddle-shaped pressure field of the subtropical high ridge and the high pressure area near Vietnam. The Hong Kong Observatory downgraded Ute to a severe tropical storm at 11: 45 pm.
On August 15th, 213, Ute changed to move northward. At 2: 5 am, the Japan Meteorological Agency downgraded it to a tropical storm. The Hong Kong Observatory downgraded Ute to a tropical storm at 5: 45 am. After that, continue to slow down and move slowly; As the active southerly airflow continues to provide water vapor, convection continues to appear in the south of Ute, and the weakening trend of Ute also slows down. It was not until 3: 3 pm that the Observatory downgraded Ute to a tropical depression. At 8: 45 pm, the Japan Meteorological Agency downgraded it to a tropical depression. However, the attenuation rate of Ute was still slow, and the Observatory downgraded Ute to a low-pressure area at 6: 15 am on August 16th.
at 6: 15 a.m. on August 16th, the Observatory downgraded Ute to a low-pressure area.
However, the Japan Meteorological Agency still rated Ute as a tropical depression until the early morning of August 19th.
On August 16th, Ute changed to take the northeast moving path. The residual rain belt related to Ute brought heavy rain to Guangdong, Guangxi and southern Hunan. Ute almost stood still on August 17, but suddenly changed to the southwest and moved slowly on August 18. Supported by the water vapor of southwest monsoon, Ute did not dissipate after landing for 4 days, and its residual rain belt continued to bring heavy rain to South China. The Japan Meteorological Agency finally rated the tropical depression at 2 am on August 19th, and finally rated Ute as dissipated at 8 am. It took 113 hours (17 hours on the 4th) after Ute landed, breaking and far from the record that the tropical cyclone of the same name dissipated more than 4 hours (nearly 2 days) after landing in 21, which was nearly three times that of the old record.