The causes of supercell development with tornadogenesis on 30 th August 2003 – A case study
نویسنده
چکیده
A supercell storm with tornadogenesis in the afternoon hours of the 30th August 2003 in NW Croatia is studied. As was seen from radar and satellite material the cell developed in Slovenia and crossed into Croatia, where interacting with favorable wind patterns (indicated by high SREH and vertical wind shear) it evolved into a supercell. Macroscale forcing was found to be lacking. On the other hand, the pattern, characterized by a pronounced thermal ridge and a baroclinic boundary associated with it, was favorable for supercell generation as has been seen in several studies in the USA. Mesoscale forcing was also enhanced by the existence of the jet stream and outflow boundaries from previous convection associated with a night-time cold front passage. Several severe storm and stability indices were tested for this case and it has been found that they generally did not correspond to the severity of the convection that took place.
منابع مشابه
Tornadogenesis: Our current understanding, forecasting considerations, and questions to guide future research
Article history: Received 30 November 2007 Received in revised form 30 June 2008 Accepted 19 September 2008 This paper reviews our present understanding of tornadogenesis and some of the outstanding questions that remain. The emphasis is on tornadogenesis within supercell thunderstorms. The origin of updraft-scale rotation, i.e., mesocyclogenesis, above the ground is reviewed first, followed by...
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