A case of severe convection took place on 21 June 2007 over Central Europe. The satellite images show the severe developments over the day when especially large MCSs associated to hail where found over Czech Republic.
This case demonstrates the use of colour enhancement on plain IR10.8 and how the storm top appearance changes depending on the color enhancement. The case also shows the development of a U-shaped storm with interesting substructures suchs as transverse waves and gravity waves found in the outflow boundary.
On the afternoon of 22nd April 2008, a series of significant and severe convective storms has developed in the region of Bulgaria, Romania and south-west Ukraine. The storms were associated with thunderstorms, hail and even tornadoes. Martin Setvak, along with contributions of Aurora Stan-Sion, Gergana Kozinarova and HansPeter Roesli have made a case study of it in which material from various sources as MSG, NOAA and Radar are presented and discussed.
Fortunately well forecasted and warned for by the various institues was the convective devlopment over Hungary on 20th May 2008. The satellite images show very nice ring shaped storms! The explosive growth and the severe updrafts can also be derived from the T-Reff plots.
Since 25th June central Europe is plagued by severe thunderstorms. With already saturated soils from a previous rainevent during the third week of June, these extra thunderstorms are considered dangerous and cause flash floods. In this small case some images and loops of a larger cell which developed in Nortnern Italy and moved ove rthe NE part of the country with associated thunderstorms moved in Slovenia.
The first major outbreak of thunderstorms in Central Europe in 2009 occurred on the 25th of May. During this day large parts of western and central Europe (France, Belgium, The Netherlands, Luxembourg, Germany, Switzerland, Northern Italy, Austria, the Czech Republic, Hungary, Slovenia and North-Western Poland) were affected by some very severe convective events (isolated multicells, supercells, and mesoscale convective systems). All participants of the CWG having interesting material related to this case are strongly invited to upload and discuss in this page!