Tornado Generation in a Narrow Cold Frontal Rainband -Fujisawa Tornado on April 20, 2006-
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概要
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At noon on April 20, 2006, a wind storm occurred in Fujisawa City, Kanagawa Prefecture, Japan with a F0-P1-P1 rank on the Fujita-Pearson-scale (FPP-scale). Damage to over 40 residential buildings was observed. The damage covered an area 2 km by 50 m. The strong winds were accompanied by the passage of a cold front. Eyewitness accounts of a dust column and the recording of a pressure drop (1.5 hPa) indicate the existence of a tornado vortex. A hook-shaped radar echo (5 km in diameter) was observed in the narrow cold frontal rainband, with strong horizontal wind shear above the damage area. The Doppler velocity pattern indicated a misocyclone, which had a diameter of 2 km and a vorticity on the order of 10<SUP>-2</SUP> s<SUP>-1</SUP>. The wind storm may have caused the tornado, which formed in the cold frontal wind shear zone.
- 公益社団法人 日本気象学会の論文
公益社団法人 日本気象学会 | 論文
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