Avalanche Advisory Archive Pre-2016
Date Issued: | 2012-01-16 |
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Danger: | 3 |
Trend: | 3 |
Probability: | 3 |
Size: | 2 |
Problem: | 0 |
Discussion: | The National Weather Service Forecasts- TODAY...SUNNY. HIGHS AROUND 10 ABOVE. EAST WIND 15 TO 25 MPH. WIND CHILL TO 25 BELOW ZERO IN EXPOSED LOCATIONS. TONIGHT...CLEAR. LOWS 3 BELOW TO 5 ABOVE ZERO. EAST WIND 15 TO 25 MPH. WIND CHILL TO 25 BELOW ZERO IN EXPOSED LOCATIONS. TUESDAY...SUNNY. HIGHS 3 TO 9. SOUTHEAST WIND 25 MPH. WIND CHILL TO 30 BELOW ZERO. Yesterday several natural avalanches were sighted throughout our region. Cross Bay along Thane Road had a natural avalanche caused by windloading on the lookers right side of the basin. It came down across the flat bench that often stops smaller wet avalanches and continued about 20% of the way to the road past that. These E and NE winds tend to load our urban avalanche areas along Mt Roberts and Mt Juneau. They can be quite fast and large in places. Many areas are quite stable right now yet if you find those windloaded areas natural avalanches remain possible as long as we continue to see loading winds. For the next 48 hours winds are to remain moderate from 15-25 out of the E and NE. This is just enough to continue to move loose light snow and keep the danger level up. Avalanche Danger is Considerable today in places. Natural avalanches possible, potentially destructive avalanches may come near or reach developed areas. Human triggered avalanches probable especially in windloaded areas. Limit your danger by limiting your exposure to avalanche zones. Avoid spending time in places like Thane Road, The Flume and Perseverance Trails. Its quite cold today with mountain top temperatures all in the negatives... Bundle up... and enjoy the sunshine and vitamin D. |
Tip: | Temperature can also play a part in avalanche danger. Sharp cooling created thermal stress in the snowpack. Some of the largest avalanche events in the Juneau History were during outflow wind events like we are having today. The famous Skip Grey pictures of the Chop Gulley Avalanche coming through downtown Juneau were on a day like today. The Berhands Avalanche from '62 was also on a day like today. Be aware that although its clear and sunny avalanche danger is still CONSIDERABLE today! |