1. Slide 1 A case of heavy snowfall in Austria, end of January 2014 FDRD – Ivan Tsonevsky - March 2014

2. Slide 2 Heavy snowfall, Austria, 30-31/01/2014 Heavy snowfall hit Austria at the end of January 2014. In Dellach (628 m) 302 cm of snowfall were registered over a period of 26 days (compared to a long-term average of 78 cm). Over a 48-h period (2014-01-30 06 UTC to 2014-02-01 06 UTC), it snowed 131 cm at this station, corresponding to a 75-100 yr event. FDRD – Ivan Tsonevsky - March 2014 Dellach Analysis 31/01/2014 00UTC

3. Slide 3 ENS snowfall 30/01/2014 FDRD – Ivan Tsonevsky - March 2014 31/01/2014

4. Slide 4 HRES 48h snowfall, VT: 30/01/2014 06 UTC – 01/02/2014 06 UTC Short-range HRES gave very accurate prediction of the snow amounts and its location. The black triangle on the maps denotes Dellach where 131 cm fell in this period. FDRD – Ivan Tsonevsky - March 2014 T+6-54h T+30-78h T+54-102h

5. Slide 5 Freezing rain, Slovenia, beginning of Feb 2014 An ice storm damaged forests and power lines in Slovenia at the beginning of February 2014. The Slovenian government said that more than 40% of the Alpine forests had been damaged. One in four homes in Slovenia left without electricity. FDRD – Ivan Tsonevsky - March 2014 Photos are from Postojna, SW Slovenia on 3 rd February 2014

6. Slide 6 Analysis, 02/02/2014 12 UTC Weather front from the Atlantic reached Central Europe and became quasi-stationary as its propagation was blocked by a high pressure system situated over Eastern Europe. Temperature inversions with a sub-freezing temperatures at the surface were related to the high pressure system and heavy snowfall occurred at the end of January. FDRD – Ivan Tsonevsky - March 2014 MSLP & 2mT Z500 & T850

7. Slide 7 02/02/2014 12UTC The new scheme gave a clear signal of heavy freezing rain over Slovenia exactly where the most affected areas were. FDRD – Ivan Tsonevsky - March 2014 Green = Rain Pink = Sleet Turqoise = Wet snow Blue = Snow Red = Freezing rain Yellow = Ice pellets 0° C isotherm = blue contour HRES T+12h new scheme OBS

8. Slide 8 02/02/2014 12UTC FDRD – Ivan Tsonevsky - March 2014 Green = Rain Pink = Sleet Turqoise = Wet snow Blue = Snow Red = Freezing rain Yellow = Ice pellets 0° C isotherm = blue contour HRES T+12h new scheme OBS HRES T+11h new scheme