Avalanche Advisory Archive Pre-2016
Date Issued: | 2013-03-05 |
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Danger: | 1 |
Trend: | 3 |
Probability: | 2 |
Size: | 2 |
Problem: | 0 |
Discussion: | The National Weather Service Forecasts- TODAY...SUNNY. HIGHS AROUND 40. SOUTHEAST WIND 5 TO 15 MPH TONIGHT...MOSTLY CLEAR. LOWS AROUND 24. SOUTHEAST WIND 10 MPH. WEDNESDAY...SUNNY. HIGHS AROUND 39. NORTHWEST WIND 5 MPH. WEDNESDAY NIGHT...MOSTLY CLEAR. LOWS 22 TO 28. NORTHWEST WIND It continues to be cool and clear. Temperatures continue to rise just above freezing during the day in our urban paths continuing to add to the melt freeze process slowly building strength into out regions snowpack. Yesterday we did see some ridgetop winds in several locations especially in the regions southeast along the channel. There may be small pockets of windslab up high in those regions. For the most part avalanche danger is LOW. Continue to look for small point release avalanches as the trees and rocks on steep sun exposed faces continue to clean themselves during the heat of the day. Be aware that during this same time of the day from noon to 4 our snowpack is the weakest on sun exposed locations. Think about the angle of the slope to the sun. The more perpendicular it is to the sun the more the sun takes affect. South faces first then later in the afternoon greater affecting South and Southeast faces. Limit your exposure to big terrain and terrain traps and funnels during this critical time of the day on these sunny days. Large avalanches are unlikely in the urban enviroment. Enjoy another sunny magnificient day! |
Tip: | As spring continues to approach rapidly and our days continue to warm start to think in terms of spring avalanches. spring avalanches - avalanches that typically occur after an extended period of warm weather saturates the snowpack with melt water. Usually this water will flow down through the snowpack until it either reaches the ground or an ice layer where it spreads out and lubricates the layer causing the snow above to slide. True spring avalanches are always wet snow avalanches. We are not quite there yet with temps just barely reaching above freezing but as we start to see temps above freezing for extended periods of time keep these conditions in mind. |