Spatial and Temporal Distribution of Tornado in Southeast Henan and its Disaster Characteristics
Abstract：Based on document including Chinese meteorological disaster dictionary and yearbook, Chinese and Henan provincial climate impact assessments, the 30 tornado records from 1949 to 2011 in southeast Henan were classified with Fujitec tornado scale and its temporal and spatial distribution were analyzed. Results shows that： in the past 63 years, two thirds of tornadoes happened in June and July; tornadoes in 1980s concentrated in 1984 and 1986, except for 1990 and 1993, tornadoes occurred every year in 1990s, the former 10 years of the 21st century, only 3 tornadoes happened in 2005 （F1 level）. There were tornado records in 24 counties, 5 tornadoes were recorded in Ru＇nan and Huangchuan, which happened the most, the rest counties recorded 1--4 tornadoes. Most of the recorded tornadoes were F0 level and F1 level, there were only a few F2 level tornadoes. The probability and intensity in southeast Henan were both stronger than west Henan.
Keywords：tornadotemporal distributionspatial distributiondisaster characteristicsintensive clas- sification
Publication Date：2012-05-26
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：5( 71-75 )