Good Morning! This is Eastern Sierra avalanche advisory for March 25th. 2005 Snow pack: The snow pack has been loaded the past few days with recent snow and wind deposition. The winds were primarily from the south then have shifted coming from the north. Estimated strong ridge top winds picking up again. We can expect some slab formation on leeward aspects. I have had some reports of the old crust layer buried about four down still being a reactive layer. The Bishop area is expecting some warmer temperatures we should watch for the snow warming up and paying attention to snow rollers and other surface instabilities. Advisory Alpine: CONSDIDERABLE (potential for deep instability on some aspects) Tree line: MODERATE with some areas of CONSIDERABLE Below tree line: LOW If you are not familiar with avalanche hazard scale please reference it. Weather: For the Mammoth area Today...Partly cloudy. Highs 43 to 53. Northwest winds 10 to 15 mph. Tonight...Partly cloudy. Lows 15 to 25. North winds 10 to 15 mph with gusts up to 45 mph over ridges. Saturday...Partly cloudy. Highs 50 to 60. North winds around 10 mph shifting to the southwest in the afternoon. Saturday Night...Partly cloudy. Lows 21 to 31. Southwest winds up to 10 mph with gusts up to 45 mph over ridges. Sunday...Partly cloudy. Highs 55 to 65. South winds 10 to 20 mph with gusts up to 35 mph. Gusts to 75 mph over ridges. For the Bishop area Mostly sunny. Highs in the lower 60s. Northwest wind 10 to 15 mph. Tonight. Mostly clear. Lows in the lower 30s. North wind 10 to 15 mph. Saturday. Mostly sunny in the morning then becoming partly cloudy. Highs in the mid 60s. Light wind. Saturday night. Partly cloudy. Lows in the lower 30s. Light wind. Sunday. Partly cloudy. Highs in the lower 70s. Light wind becoming south 10 to 15 mph in the afternoon. Sunday night. Partly cloudy. Lows in the upper 30s. The Eastern Sierra is a big region these advisories may not apply to the area you plan to visit. Please use caution. Email me with any snow observations. Travel safe