In the holiday season, it is anything but holiday weather.Mother Nature has been wreaking havoc in central Poland, with violent storms damaging buildings, severing power lines and flooding cellars. And all this, after extreme weather last summer, including a tornado, that claimed three lives in the country. In central Switzerland, the search is on for two missing children believed to have been swept away in a stream swollen by heavy rainfall. It is thought the 11-year-old girl and six-month- old boy got into difficulties while crossing the waterway on their way home. A four-year-old girl with them managed to raise the alarm. In Austria, the unseasonal weather has provided picture postcard scenes in Tyrol. Snow there may not be spectacular in winter. But in July? No wonder tourists have been stopping to take photographs. Elsewhere, things have not been so pretty with Austria’s second city Graz hit by flooding.