I wonder if there was a snowstorm.
There is a wind advisory for that area and rain or snow tonight.
http://forecast.weather.gov/MapClick.php?map.x=254&map.y=275&minlon=-116.65&maxlon=-110.4&minlat=40.65&maxlat=45.6&mapwidth=354&site=pih&zmx=1&zmy=1
global warming...