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Cyclone Tomas
Severe Tropical Cyclone Tomas was the most intense tropical cyclone to strike Fiji since Cyclone Bebe in 1972. Forming out of a tropical disturbance on March 9, 2010, designated 14F by the Fiji Meteorological Service, the system gradually organized within an environment favoring intensification. By March 11, the disturbance had strengthened sufficiently to be classified as Tropical Cyclone Tomas, the eighth named storm of the 2009-10 South Pacific cyclone season. Modest intensification took place over the following few days, with the system attaining severe tropical cyclone status on March 13. On March 14, Tomas began to impact parts of Fiji while continuing to gain strength. As it passed near Vanua Levu on March 15, the cyclone attained its peak intensity with winds of 175 km/h (110 mph) and a pressure of 930 hPa (mbar) according to the FMS. At the same time, the Joint Typhoon Warning Center assessed it as a Category 4 equivalent storm with 1-minute sustained winds of 215 km/h (135 mph).
Cyclone Tomas proved to be very destructive throughout Fiji, leaving many homeless and entire villages under water. At least one person has been confirmed to have been killed by the storm after being swept out to sea while rescuing family members. Reports from outlying islands state that entire homes have been flattened by wind gusts up to .
==Meteorological history==
Shortly after the first advisory on Tropical Disturbance 13F was issued on March 9, the Fiji Meteorological Service (FMS) began monitoring a new disturbance, designated 14F, further east. The following day, deep convection began to develop around the disturbance's low-level circulation, prompting the JTWC to begin monitoring it for possible cyclonic development. Later on March 10, the FMS upgraded the system to a tropical depression as it continued to become better organized. Located within an environment characterized by low wind shear, further intensification was anticipated as convection continued to develop over the expanding system. Around 1500 UTC on March 11, the JTWC issued their first advisory on the cyclone, classifying it as Tropical Storm 19P. Several hours later, the FMS upgraded the system to a Category 1 cyclone and gave it the name ''Tomas''. Rapid intensification was expected to take place over the following 48 hours as sea surface temperatures ahead of the storm averaged , well-above the threshold for tropical cyclone development.
Throughout the day on March 12, Tomas steadily intensified, and early the next day, the JTWC upgraded the storm to a Category 1 equivalent hurricane with winds of 120 km/h (75 mph). Convective banding substantially increased on March 13, allowing Tomas to become the fourth severe tropical cyclone of the season early the next morning. Around the same time, the JTWC assessed the storm to have attained winds of 155 km/h (100 mph), ranking it as a Category 2 cyclone.〔 By the afternoon of March 14, Tomas had developed a banding-eye feature surrounded by deep convection. At this point, the FMS assessed the storm to have winds of 150 km/h (90 mph) and a pressure of 950 hPa (mbar). The JTWC also noted further intensification, upgrading Tomas to a Category 3 equivalent storm.〔 As it passed near Vanua Levu on March 15, the cyclone attained its peak intensity with winds of 175 km/h (110 mph) and a pressure of 930 hPa (mbar) according to the FMS. At the same time, the Joint Typhoon Warning Center assessed it as a Category 4 equivalent storm with 1-minute sustained winds of 215 km/h (135 mph).〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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