Avalanche Advisory Archive Pre-2016
| Date Issued: | 2012-04-13 |
|---|---|
| Danger: | 2 |
| Trend: | 3 |
| Probability: | 4 |
| Size: | 2 |
| Problem: | 0 |
| Discussion: | The National Weather Service Forecasts- TODAY...MOSTLY CLOUDY. ISOLATED RAIN SHOWERS. HIGHS AROUND 55. TONIGHT...MOSTLY CLOUDY. ISOLATED RAIN SHOWERS LATE. LOWS AROUND 36. SOUTHEAST WIND 10 MPH. SATURDAY...CLOUDY. SCATTERED RAIN SHOWERS. HIGHS AROUND 56. Temperatures in the region continue to climb... last nights Mt Roberts Tram Summit temps remained constant at around 46f degrees. We continue to erode the bonds in the snowpack and see glide avalanches and small wet point release avalanches on steep rocky faces in the region. The offshore flow from the SE continues... although it looks like we may see some clouds today it has been doing a good job of breaking up most every afternoon. These temperatures are quite warm. Our snowpack is no longer freezing again overnight... this is the 5th night in a row with temps greater than 40f degrees... This continues to erode the bonds in the snowpack deeper and deeper adding to the possible instabilities... Look to see continued avalanche activity as we peel the layers off of the snowpack onion... Steep open slopes will continue to shed. Even more so in shallow areas where this isothermal condition reaches all the way to the ground. Be increasingly aware of the steep sections over the urban paths. The glide cracks on the face of the White Avalanche Path and the Behrands Avalanche Path continue to expand. Releases in these areas are hard to predict yet be aware there is danger present in the meadows above the homes in both paths. Please do not go for walks in the avalanche runout zones in those areas. Snowslide Creek at Thane is also starting to see some glide activity. As well as the presence of a large cornice in this path that is continually weakening... Please do not park at the base of the snowslide creek avalanche path. Recognize that the Flume and Perseverance trail also cross avalanche zones. Chop Gulley above the flume train is starting to get glide cracks as well and will start its spring shedding sometime soon. Be aware that if this goes larger than expected it could reach the trail in this area. |
| Tip: | Tor those of you interested in snow science an amazing library of papers and presentations from the International Snow Science workshops have been put together for your online enjoyment. Go to: http://www.issw.net/ |