EUMeTrain: Mini Case Study on extreme rainfall in Bulgaria (100-300 mm in large areas)

Author

Jarno Schipper - ZAMG

Introduction

This small case study will be about the extreme rainfall in Bulgaria of early July 2004. Between 100 to 300 mm of precipitation were recorded in this highly convective situation. The mini case studie is further supplemented with a chapter "interactive overlays". In this chapter you can yourself overlay various numerical parameters on the corresponding satellite imagery. Through this interactive way you can reconstruct the case and exercise with it. The case was proposed by Gergana Kozinarova of the Bulgarian Meteorological Service to EUMeTrain. If you think you can contribute to this case or to EUMeTrain by providing us dates of interesting case studies which happened in your region of interest, we encourage you to please write us using the above e-mail address.

Meteosat 8 IR10.8 Enhanced: 2nd July 2005: 18 UTC

Synoptic situation

From the synoptical chart of July 2nd 2005 a depression can be located which causes cloudiness and severe rain over Bulgaria. The depression is located in front a weak N-S orientated branch of frontal cloudiness.


IR Imagery (Meteosat 8 channel 10.8): time sequence
This chapter shows and briefly describes the convective developments in a sequence of 3-hourly images.


Enhanced IR Imagery (Meteosat 8 channel 10.8): time sequence
The discrimination of convective cells and level of convection is easier using enhanced Meteosat 8 IR10.8 imagery.


WV Imagery (Meteosat 8 channel 6.2): time sequence
In the following chapter the cloud configurations seen in satellite images are showed using Meteosat 8 WV6.2 channel. The channel is suitable to observe UTH.


Meteosat 8 - Airmass RGB: time sequence
The development and especially the physical background is pictured using the Airmass-RGB. The satellite images are each time 3-hours apart.