VIENNA—An avalanche in an area of Austria bordering Switzerland has killed five people on an unusually dangerous day in the Alps after heavy snowfall followed by warmer weather, spokespeople for rescue services said on Friday. A separate avalanche earlier on Friday swept down a ski piste at the popular resort of Soelden, where five people had so far been rescued alive, said Patrick Ortler, supervisor of the emergency services control centre in the province of Tyrol where both avalanches happened. One further person caught in the deadly avalanche near the town of Spiss on the border with Switzerland suffered minor injuries, and rescue helicopters from Switzerland and Austria were deployed, he added. It was not immediately clear what activity the avalanche victims in Spiss were involved in or where they were from, Ortler said. Ortler initially put the death toll at four with one person missing. Another supervisor at the …