That's horrible... kids as well.
11 Feb 2011 12:45 (is that UTC?).
The radar image shows nothing and the MSLP chart shows nothing.
LSZS Sion:
METAR LIVE 111155Z 35006KT CAVOK 05/M02 Q1017 RMK BKN BKN080 VIS MIN 9999
TAF LSZS 111125Z 1112/1121 VRB03KT CAVOK=
No apparent weather angle.