US Forest Service Manti-La Sal National Forest

 Introduction:  Good morning, this is Max Forgensi with the USFS Manti-La Sal Avalanche Center with your avalanche and mountain weather advisory.  Today is Saturday, March 4th at 6:30 am. This advisory will expire in 24 hours.

 

To see past advisories check out the ARCHIVE.  To see current conditions go to our WEATHER PAGE.  To see photos go to the AVIPHOTOS page.

 

MLAC NEWS: We have started an observer page for folks to send us their backcountry observations. Report what you see in your backcountry travels HERE. Please send us your reports on avalanches, ski conditions, road conditions, snow pit profiles etc. Thanks! You can also report observations at 435-636-3363

  

General Conditions:

           The winds for the past 36 hour time period have been very strong out of the South and South-southeast.  Averages have been in the upper 20’s and lower 30’s with gusts as high as 80 mph.  These winds will continue out of the Southwest today as the cold front moves over our area today.  Once the front moves through, temperatures will be slightly colder than the past few days and winds will start to diminish.  Unfortunately, this front has limited moisture associated with its southern end, and the La Sal Mountains are part of that area.  Today, skiing conditions will be like your Mother’s meat casserole-you won’t know what is in the next bite until you try some or look real carefully.  I would ski conservatively and be careful once again of ground hazards.  We are only at 71% water equivalent for the La Sal Mountains so far this year. 

            The road to the Geyser Pass trailhead has been graded down low and plowed up high making for some great driving conditions.  The Nordic and Skate skiing conditions up to Geyser Pass and into Gold Basin will be wonderful today.  

 

  Mountain Weather: (At 10,500’)

Today: Mostly cloudy, then gradually becoming mostly sunny, with a high near 41. Breezy, with a south southwest wind between 15 and 20 mph, with gusts as high as 35 mph.
Saturday Night: Mostly clear, with a low around 18. Southwest wind between 10 and 15 mph, with gusts as high as 30 mph.
Sunday: Partly cloudy, with a high around 38. Southwest wind around 15 mph, with gusts as high as 25 mph.
Sunday Night: Partly cloudy, with a low near 22. South southwest wind around 15 mph, with gusts as high as 30 mph.

                                                                                                                                                                                                                                            

Weather Station/ Location

Snow Depth (HS):  in./cm

New Snow (HN) in./cm

6:00 a.m. Temp (F)

Current Observations:  Wind, 48 hour snow

Geyser Pass Trailhead (9,600’): (snotel link)

26” 

0

Wx down

Rare occurrence for SNOTEL, its down

Geyser Pass

 138 cm

0

N/a 

Deepest place these days 

Gold Basin and South Mountain

42”/105cm 

0

n/a

 

Pre-Laurel Peak Station (11,705’)

N/a 

N/a 

18

South-Southwest @ 35 gusts to 57 

 

Avalanche Conditions: (Link to the International Avalanche Danger Scale here)

           The wind has been really strong for the past 36 hours, meaning any available snow for transport in fetch areas on Southerly aspects will have moved.  Many factors will have limited the snow transport…lack of snow on Southerly aspects, warm temperatures that have made any snow available for transport too heavy to transport and finally the dry air mass will more than likely sublimate any snow that is able to transport into the atmosphere.  If any wind slabs formed in the past 36 hours, they will be very isolated pockets and will be found much lower in starting zones than anticipated.  Before the blow dryer turned on, the snow on the ground had a very weak snow pack structure.  Facets reign on Northerly aspects while Southerly aspects have reactive crust sandwiches. 

The BOTTOM LINE for today will be an avalanche danger of MODERATE on steep North-East aspects with the classic slab/weak layer (depth hoar)/bed surface (ground) with no anchors and pronounced trigger points.  Be careful on those South-West aspects where crust sandwiches are lying about as well.  Although these areas are isolated today, I am reluctant to give the LOW avalanche danger for all areas today.  Our continental snow pack has yet to heal itself of basal instabilities.   

 

We need your observations! Call 435-636-3363 or use the link near the top of the page to get to the observers page! Yes, DO IT!

Take a look at a snow pit from our tour on 01/15/06 here.