Avalanche Advisory Archive Pre-2016
Date Issued: | 2011-02-03 |
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Danger: | 4 |
Trend: | 2 |
Probability: | 3 |
Size: | 3 |
Problem: | 0 |
Discussion: | The National Weather Service Forecasts- TODAY...RAIN. HIGHS AROUND 43 EARLY IN THE DAY. SOUTHEAST WIND TONIGHT...RAIN OVERNIGHT WITH A CHANCE OF SNOW LATE. SNOW FRIDAY...SNOW AND RAIN LIKELY. SNOW ACCUMULATION UP TO 1 INCH. HIGHS AROUND 35. LIGHT WINDS BECOMING SOUTH 10 MPH IN THE AFTERNOON. FRIDAY NIGHT...RAIN AND CHANCE OF SNOW. LOWS 27 TO 33. SOUTHEAST WIND 10 MPH. We have reveiced 35mm of precipitation in the last 48 hours (about 1.4\") Temperatures hit two month highs during that time. Avalanche Danger is currently HIGH. Temperatures fell by 2 degrees in the last 18 hours and precipitation rates are falling considerably. Temperatures are predicted to remain quite high today. As we give this rain time to drain out of the snowpack we will start to see a cooling trend in the temps throughout the next 24 hours that should give us near 8 degrees of additional cooling. As the snowpack looses its free moisture and continues to cool stability will increase. Danger levels are predicted to fall throughout tonight and in to tomorrow. Time is your friend right now. Remember the danger levels are still HIGH Today. |
Tip: | Having a slab on a weak layer that?s on top of a good sliding surface constitutes an unstable snowpack, the kind most prone to avalanching. An unstable snowpack contains both weak and strong snow layers. A weak layer consists of poorly bonded or unconsolidated snow, while a strong snow layer has well consolidated snow, such as a slab. A stable snowpack is generally more homogeneous and lacks significant density differences throughout the pack. It can contain: ?Snow that?s all strong |