Avalanche Advisory Archive Pre-2016
| Date Issued: | 2013-02-03 |
|---|---|
| Danger: | 2 |
| Trend: | 3 |
| Probability: | 3 |
| Size: | 2 |
| Problem: | 0 |
| Discussion: | The National Weather Service Forecasts- TODAY...RAIN. SNOW LEVEL LOWERING TO 1000 FEET IN THE AFTERNOON. HIGHS AROUND 40. SOUTHEAST WIND 15 TO 25 MPH...DIMINISHING IN THE AFTERNOON. TONIGHT...RAIN SHOWERS...MIXING WITH SNOW LATE. LITTLE OR NO SNOW ACCUMULATION. SNOW LEVEL 500 FEET IN THE EVENING. LOWS AROUND 34. SOUTHEAST WIND 10 MPH. MONDAY...CLOUDY. SCATTERED RAIN SHOWERS. HIGHS AROUND 36. MONDAY NIGHT...DECREASING CLOUDS. LOWS 27 TO 33. SOUTHEAST WIND 15 TO 25 MPH. Temperatures have been above freezing at the Mt Roberts Tram Summit for the last 3 days. Temperatures have been right at freezing at the Eaglecrest Summit for the same amount of time. We have received over 2.5\" of rain during that time. The snowpack on the lower mountain should be fairly stable now after processing much water at above freezing temps over the last few days. Higher on the mountains in our region things may be a little trickier. At uppermost elevations you may find some new snow and small windslabs in places. We have received 15mm of precip since the Eaglecrest Summit dipped down below freezing again... during a period with 15-40mph winds. This has the ability to stack up some pockets of windslab at summit and upper mountain ridgeline on the lee slopes. With temperatures very near to freezing and cooling we can assume the snow is bonding fairly well to the old snowpack surface. It is also stacking from dense snow to lighter snow. We have an additional .6\" of snow in the forecast for over the next 24 hours. This may start to deliver more new snow today into tomorrow. Wet avalanches may be possible today on lower mountain super steep slopes. This should start to stabilize as the temperatures lower in the next 24 hours. We may see small pockets of instability at upper mountain locations on lee slopes. Be aware of windloaded steep unsupported convex slopes. |
| Tip: | For trivial reasons today I wanted to share an article with you about an avalanche investigation in a place SUPERBOWL at Mt Hood Meadows... It was an impressive event. http://www.skihood.com/Community-and-News/Meadows-Blog/Posts/2011/03/Ski-Patrol-Investigates-Avalanche?c=130043850930520000 |