| Posted: 8:36 a.m., Wednesday, December 10, 2003 |
Huntington Ravine has MODERATE and LOW avalanche danger. North Gully, Damnation and Yale have Moderate avalanche danger. Natural avalanches are unlikely and human triggered avalanches are possible. Unstable slabs are possible on steep terrain. Use caution in steeper terrain. Central, Pinnacle, Odell's, South and the Escape Hatch have Low avalanche danger. Natural avalanches are very unlikely and human triggered avalanches are unlikely except in isolated pockets. Use normal caution.
The winds yesterday into today have been light at 24-32 kph (15-20 mph) from the WNW shifting around to the current WSW. Today's solar radiation today may contribute to isolated instability, especially in areas that have cornices hanging above. Keep in mind that areas posted at Low may contain isolated pockets of instability. Snowfields now exist from Lion Head towards Right gully just south of the Lion Head trail. So be aware that you can enter avalanche terrain very quickly if you get off the summer trail.
Today's beautiful blue skies will give way to increasing clouds later this afternoon. Freezing rain and rain is forecasted to begin tonight into Thursday. This storm has the potential to bring 1.75 to 2.5 cm (.70 to 1 inch) of water, creating havoc with snow in avalanche terrain, on the trails, and in your driveway.
You absolutely need skis or snow shoes to travel off the beaten path. Even with them expect your trip to be slow and difficult. With rain coming severe crusts may develop in the woods and unpacked trails.
THE LION HEAD SUMMER TRAIL IS CLOSED. THE WINTER ROUTE IS OPEN. THE UPPER WINTER SIGN WILL NOT GO UP UNTIL IT IS POSSIBLE FOR US TO GET UP THERE.
AS ALWAYS, THIS ADVISORY IS ONE MORE TOOL TO HELP YOU MAKE YOUR OWN DECISIONS IN AVALANCHE TERRAIN. It should be used along with your own snow stability assessments, knowledge of safe travel techniques, skill in reading mountain weather's effect on the snowpack, and avalanche rescue.
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Avalanche Advisory Archives.
United States Avalanche Danger Descriptions.
Échelle Canadienne de risque d’avalanche.
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