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The Sierra Avalanche Center is cautioning backcountry travelers about avalanche danger on northerly aspect slopes above 8,000 to 8,500 feet.

The issue is new snow falling on top of weaker old snow, according to a post from the Avalanche Center on Facebook.

If any signs of instability are present, such as recent avalanches, snow surface cracking, whumpfing, or blowing snow, it is best to avoid avalanche terrain.

People are advised to choose slopes of less than 30 degrees without steeper connected terrain above or to the side.