Avalanche Advisory Archive Pre-2016
| Date Issued: | 2012-04-18 |
|---|---|
| Danger: | 2 |
| Trend: | 3 |
| Probability: | 3 |
| Size: | 2 |
| Problem: | 0 |
| Discussion: | The National Weather Service Forecasts- TODAY...PARTLY SUNNY. HIGHS AROUND 56. SOUTHWEST WIND INCREASING TO 10 MPH IN THE LATE MORNING. TONIGHT...MOSTLY CLOUDY. CHANCE OF RAIN. LOWS AROUND 39. LIGHT WINDS BECOMING SOUTHEAST 10 MPH LATE. THURSDAY...RAIN LIKELY IN THE MORNING...THEN SLIGHT CHANCE OF RAIN IN THE AFTERNOON. HIGHS AROUND 51. SOUTHEAST WIND 10 MPH. Temperatures have not touched freezing at the Mt Roberts Tram summit for 12 days... and have only been below freezing for 6 hours in the last 16 days. Snow continues to clean itself off of the rocks and grass on steep open faces. Be aware if you are below super steep pitches snow will be seen moving today especially in the sunnier areas. Slide sizes are expected to remain small on most all aspects. Once again be aware of glide avalanche potential on the faces you have seen in the region where glide cracks are opening up and continually expanding. These are harder slides to predict and yet do have more hazard potential than most of the small wet slides we have seen. Be aware that with the direct sunlight today danger levels will peak during the afternoon on S to SW facing slopes. Best to get out early... and avoid sunny slopes later in the day. The Flume and Perseverance trail still have a tremendous amount of snow looming above... We should start to see Chop Gully unloading its spring layers above the Flume any day now... Behrands also still has quite a bit of snow up high with the glide cracks down low continually expanding as well. Avoid walking in the open meadows below the avalanche path later in the day. On Thane Road snowslide creek still has quite a bit of snow up high with a large cornice that is probably weakening in the direct sunlight. It is also starting to show some glide cracks on the lower pitches which could cause a concern. Snow volumes in our urban enviroments are rapidly dwindeling... It wont be too much longer before the hazard is gone for the urban enviroments. Be safe out there... and have an amazing day. ENJOY THE SUN! |
| Tip: | Here is a great read on isothermal snowpacks and wet snow avalanches. http://www.avalanche.org/moonstone/slab/avalanche%20release%20and%20snow%20characteristics.htm |