Variable winds over the last few days are loading slopes and cross loading terrain features on all aspects above 7,000 feet. Winds at the Granite Mountain weather station have been out of the west, southwest, northwest, and even south-southeast (very early Monday morning). The winds have been light to moderate in speed, which is perfect to move the low density powder around with out causing the light snow to go air borne and sublimate. Today expect to find a wide range of wind slab depth and sensitivity from shallow and sensitive, to thick and stubborn. One thing that all the wind slabs will have in common is that they will be located on leeward aspects in exposed terrain above 7,000 feet. Be on the look out for any slopes that look pillowy, rippled, or fat with new snow.
Also, keep in mind that this new round of snow is going to do a great job of camouflaging the older and stiffer wind slabs that still exist on most upper elevation terrain on the north half of the compass. If an avalanche was triggered today on the north half of the compass, it could step down into older wind slabs causing a much larger avalanche.
Below is weather data from the PAC weather station on Granite. You can get real time weather on Granite by clicking the WEATHER tab at the top of the web page.
Cold temperatrues and low density snow will keep loose dry avalanches on our radar today. In steep terrain, be aware that these normally benign 'sluffs' can entrain a fair amount of snow and be dangerous if you are caught and taken into a terrain trap or over cliffs or rocks. Fortunately this problem is easy to predict and avoid. If travelling in steep terrain ( slopes over 35 degrees) use slope cuts to help mitigate the loose snow and keep the sluff below you as you travel down slope.
Snowmobiler/Snowbiker Travel Restrictions: Please respect these closures and other users recreating in them. Winter Travel Map(East side). You can download the map to the AVENZA app on your phone, and know your exact location while you are out riding. It is your responsiblity to know where closures exist on the forest.
The Granite Mountain Area Closure is in effect Jan15-March 31, please respect Snowcats operating in this and nearby areas. In addition there are other areas on the Payette National Forest that are CLOSED to snowmobile traffic including Jughandle Mt east of Jug Meadows, North of Boulder Mtn, East of Rapid Peak, North of the 20 mile drainage, Lick Creek/Lake Fork Drainage (on the right side of the road as you are traveling up canyon), and the area north of Brundage Mt Ski area to junction "V" and along the east side of Brundage and Sergeants' Mts. with the exception of the Lookout Rd( junction "S").
The Friends of the Payette Avalanche Center (FPAC) needs YOU! We are in desperate need of more user support and financial assistance. The avalanche forecast is not a guaranteed service, and is in jeopardy of dwindling down to only a couple of days a week in the near future.We have equipment that is overdue for replacement but lack the funds to purchase new gear including weather station parts and our forecast sleds. Please help if you can by clicking the DONATE tab above. If you value this life saving information, make a donation or help the FPAC in raising funds for the future.
No new human triggered avalanches have been reported.
Great skiing and riding conditions exist out there right now. Stay safe and enjoy the blower powder!
If you see or trigger any avalanches while you are out, please let us know at payetteavalanche.org or use the OBSERVATION tab at the top of the website.
|0600 temperature:||10 deg. F.|
|Max. temperature in the last 24 hours:||16 deg. F.|
|Average wind direction during the last 24 hours:||west-southwest|
|Average wind speed during the last 24 hours:||4 mph|
|Maximum wind gust in the last 24 hours:||20 mph|
|New snowfall in the last 24 hours:||NA inches|
|Total snow depth:||NA inches|
Today snow showers. High near 18. Wind chill values between -6 and 4. West wind 14 to 17 mph. Chance of precipitation is 90%. Total daytime snow accumulation of 3 to 5 inches possible.
Tonight a there is a 50 percent chance of snow showers. Cloudy, with a low around 10. Wind chill values between -3 and 2. West wind 9 to 14 mph. New snow accumulation of 1 to 2 inches possible.
LONG TERM...Wednesday night through Monday...Westerly flow aloft through a weak ridge of high pressure will keep most of our area dry through Thursday night. Precipitation will be confined to the northern mountains in Baker County Oregon and west central Idaho mountains. Precipitation will begin to spread further south on Friday as an upper level trough approaches the Pacific Northwest coast. Showers across most of the area Friday night through Sunday will decrease Sunday night and Monday as the trough exits and a weak upper level ridge builds over the Intermountain Region. Snow levels near 5000 feet Friday through Saturday will lower to the valley floors on Sunday. Temperatures will be a few degrees below normal through Friday, a few degrees above normal on Saturday, then below normal again Sunday and Monday.
This avalanche advisory is provided through a partnership between the Payette National Forest and the Payette Avalanche Center. This advisory covers the West Central Mountains between Hard Butte on the north and Council Mountain on the south. This advisory applies only to backcountry areas outside established ski area boundaries. This advisory describes general avalanche conditions and local variations always occur. This advisory expires at midnight on the posted day unless otherwise noted. The information in this advisory is provided by the USDA Forest Service who is solely responsible for its content.