The National Oceanic and Atmospheric Administration Friday night issued an avalanche warning for the western mountains of Wyoming effective until midnight Sunday. This warning includes the Teton, Gros Ventre, Snake River, Salt River and Wyoming Ranges as well as the west slope of the Wind River Range and the Togwotee Pass area. Forecasters say heavy snow and strong winds have created very dangerous avalanche conditions where medium to large natural avalanches are likely, and in fact have been already impacting the area’s roadways. The Bridger-Teton Avalanche Center says over the past seven days, there have been 135 avalanches in the area. Travel in avalanche prone areas is to be avoided. Weather officials and urge all outdoor recreationists – regardless of their ability – to heed the warning.