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Severe Tropical Storm Rumbia, known in the Philippines as Tropical Storm Gorio, was a tropical cyclone that brought widespread flooding in areas of the Philippines and China late June and early July 2013. The sixth internationally named storm of the season, Rumbia formed from a broad area of low pressure situated in the southern Philippine Sea on June 27. Steadily organizing, the initial tropical depression moved towards the northwest as the result of a nearby subtropical ridge. On June 28, the disturbance strengthened to tropical storm strength, and subsequently made its first landfall on Eastern Samar in the Philippines early the following day. Rumbia spent roughly a day moving across the archipelago before emerging into the South China Sea. Over open waters, Rumbia resumed strengthening, and reached its peak intensity with winds of 95 km/h (50 mph) on July 1, ranking it as a severe tropical storm. The tropical cyclone weakened slightly before moving ashore the Leizhou Peninsula late that day. Due to land interaction, Rumbia quickly weakened into a low pressure area on July 2 and eventually dissipated soon afterwards. Prior to moving over the Philippines, extensive preparatory measures were undertaken by local and government relief agencies. In the provinces of Eastern Visayas and Caraga, an estimated ₱6.9 million was allocated to relief materials. Upon landfall, Rumbia caused extensive flooding across multiple islands, causing the cessation of transportation services and displacing thousands of people. Power outages also resulted from the heavy rain and strong winds. At its landfall on Leizhou Peninsula in China, Rumbia damaged large swaths of agricultural cropland and destroyed at least 112 buildings, causing ¥7.68 million in damage. ==Meteorological history== In late June 2013, an area of disturbed weather persisted in the southern Philippine Sea, accompanied by a broad area of low pressure.〔 Moving northwestward under the influence of a subtropical ridge, the system organized in favorable conditions of low wind shear the following day. At 1200 UTC on June 27, the disturbance became sufficiently organized to be classified as a tropical depression by the Japan Meteorological Agency (JMA); at the time the depression had winds of 55 km/h (35 mph) and a minimum barometric pressure of 1006 mbar (hPa; 29.71 inHg). Three hours later, the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) upgraded the system to tropical depression status, designating it with the local name ''Gorio''; however, the agency estimated weaker winds in the storm. Throughout June 28, the low-level circulation center of the depression consolidated and its rainbands intensified and organized around the center. At 0300 UTC that day, the Joint Typhoon Warning Center (JTWC) also upgraded the system to tropical depression ''06W''. Nine hours later, the depression strengthened sufficiently to be upgraded to tropical storm intensity by JMA, giving the storm the international designation ''Rumbia''; the PAGASA followed suit three hours later. As deep convection became more centralized, a decaying tropical upper tropospheric trough to the north of Rumbia suppressed polar outflow from the tropical storm, thus hampering further intensification. The subtropical ridge to the northeast continued to force Rumbia towards the northwest, and by 0300 UTC on June 29, Rumbia made landfall near Hernani, Eastern Samar as a tropical storm with winds of 65 km/h (40 mph) and a minimum barometric pressure estimated at 1000 mbar (hPa; 29.53 inHg). Rumbia later passed over Samar Island, and made additional landfalls on other islands in the Philippines before emerging into the South China Sea by 0300 UTC the following day; upon emergence, the tropical storm maintained the same intensity as it had at its initial landfall.〔 Once in the South China Sea on June 30, Rumbia steadily organized, with the storm's banding features becoming more well defined around the center. However, moderate wind shear still displaced much of the convection to the southwest. Throughout the day, microwave imagery began to detect an eye developing within Rumbia, indicating strengthening. At 2100 UTC that day, the tropical storm moved out of the PAGASA's area of responsibility, and thus the agency's last warning on the system was issued at that time. A period of rapid intensification later ensued, and at 0600 UTC on July 1, the JMA upgraded Rumbia to severe tropical storm intensity; consequently, the tropical cyclone reached its peak intensity with winds of 95 mph (60 km/h) and a minimum barometric pressure of 985 mbar (hPa; 29.09 inHg). Three hours later, the JTWC reclassified Rumbia as a typhoon, indicating a wind speed increase of 45 km/h (30 mph) in 24 hours.〔 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「Tropical Storm Rumbia (2013)」の詳細全文を読む スポンサード リンク
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