Analysis of a Tornado in Northern Anhui in June 2006 Based on Doppler Radar Products
- Article
- Figures
- Metrics
- Preview PDF
- Reference
- Related
- Cited by
- Materials
Abstract:
The Doppler Radar Products during a tornado occurred in Sixian, Anhui Province on 29 Jun 2006 are analyzed. Before the tornado, there were three NESW oriented bowshaped echoes, and the tornado was on the furthest southwest edge of the bowshaped echo. A shortrange heavy rain occurred before the tornado appearing with a rainfall amount of 60 mm in 2 hours. The strong shear of wind direction existed in the front of the bowshaped echo, which resulted in a series of mesocyclones along the front edge of the echo. The southwest bowshaped echo joined the echo in the front of it, 30 min before tornado occurred, and then a large mesocyclone with a diameter of 25.8 km formed. According to the survey, there was a severe wind zone in upstream of the tornado, which was in agreement with the moving path of the south edges of the maximum zones in the mesocyclones. It suggests that along the south edges of the maximum wind zones in the mesocyclones, the mesocyclones and the straight wind behind the bowshaped echoes have the same direction, and the two airflows overlaid together, leading to the occurrence of the severe winds. About 1 hour 40 min before tornado occurred, the radar caught up the mesocyclones, and 12 min before, detected TVS (Tornadic Vortex Signature) products, which are undoubtedly useful for making tornado warning.
Keywords:
Project Supported:
Clc Number:
You are thevisitors
Supported by:Beijing E-Tiller Technology Development Co., Ltd.
Supported by:Beijing E-Tiller Technology Development Co., Ltd.