THIS AVALANCHE ADVISORY EXPIRED ON April 6, 2019 @ 5:24 am
Avalanche Advisory published on April 5, 2019 @ 5:24 am
Issued by Ben Bernall - Kootenai National Forest

Kootenai

bottom line

Last forecast of the year!! We have a stable snowpack with a 4-7" of fresh snow at upper elevations. With a nice little shot of late season powder at upper elevations and more light moisture on the way expect to find powder riding above 6,000' and the potential for small, loose-wet slides below this elevation.  This weekend may be a good time to tear up the last bit of pow for the season!

How to read the advisory

Last forecast of the year!! We have a stable snowpack with a 4-7" of fresh snow at upper elevations. With a nice little shot of late season powder at upper elevations and more light moisture on the way expect to find powder riding above 6,000' and the potential for small, loose-wet slides below this elevation.  This weekend may be a good time to tear up the last bit of pow for the season!

1. Low

?

Above Treeline
Generally safe avalanche conditions. Watch for unstable snow on isolated terrain features.

1. Low

?

Near Treeline
Generally safe avalanche conditions. Watch for unstable snow on isolated terrain features.

1. Low

?

Below Treeline
Generally safe avalanche conditions. Watch for unstable snow on isolated terrain features.
    Generally safe avalanche conditions. Watch for unstable snow on isolated terrain features.
Avalanche Problem 1: Loose Wet
  • Type ?
  • Aspect/Elevation ?
  • Likelihood ?
    Certain
    Very Likely
    Likely
    Possible
    Unlikely
  • Size ?
    Historic
    Very Large
    Large
    Small

The weather forecast is predicting another round of moisture moving into the area Friday and Friday night. With a light dusting of fresh snow on top of the snow pack and a rain/snow line of 6,000' we can expect the potential for loose surface snow to move easily down the slope as mild temperatures and rain soften the surface snow up in steep terrain. These surface slides should stay fairly small and benign. Get up high out of the rain on Friday and Saturday and you will likely find some powder to tear into!

Avalanche Problem 2: Glide
  • Type ?
  • Aspect/Elevation ?
  • Likelihood ?
    Certain
    Very Likely
    Likely
    Possible
    Unlikely
  • Size ?
    Historic
    Very Large
    Large
    Small

Still lots of Glide cracks out there; but, seeing very little activity out of them. With cloud cover and fairly cool conditions this weekend the potential above 6,000' is very minimal. Below the rain line it will be slightly higher as the snowpack takes on a light dose of rain and above freezing temps. These slides are unpredictable, just don't hang out on slopes with large cracks opening up above you.  Easy peasey!



Glide Cracks on rock slab bed surface, resulting in small climax avalanche.

advisory discussion

THIS WILL BE THE LAST ADVISORY WE POST FOR THE 2018-19 WINTER SEASON!!  

Just wanted to send out a big thank you to all the folks who helped out with forecasting and observations this year: Nate Stephens, Elizabeth Figgins, Cass Hopkinson, Grant Golden, Reba! Zack Gidley, Zach Guy, Shana Bernall and all the folks involved in IPAC that make this happen every winter.

And last but certianly not least some key and willing funding partners: Montana RTP grant program & The Kootenai Fire program for cutting employees loose to be my partners out there (thanks Jamey and Jeff!)

Weather and CURRENT CONDITIONS
weather summary
Backcountry Forecast from NWS Missoula issued:
420 AM MDT Fri Apr 5 2019

DISCUSSION: Shower activity will increase today as a wave of
energy moves in from the southwest. Scattered thunderstorms will 
develop this afternoon and will be cable of producing gusty winds
and brief rainfall. A cold front will push through the Northern 
Rockies late tonight, resulting in breezy westerly winds. Snow
levels will drop behind the cold front, which could lead to a
light dusting of snow in the higher terrain towards Saturday
morning. Breezy and cooler conditions will prevail into Saturday.
A more significant tap of moisture is expected Sunday into 
Monday, central Idaho in particular could receive as much as 
1.00" of precipitation. Snow levels will initially by around 6000 
feet, before dropping to near 4000 feet Monday evening.

Kootenai:
--------------------------- 5000-7000 FT ----------------------------
                      Today        Tonight      Sat      
Cloud Cover           95%          90%          60%      
Hi/Lo Temps           39 to 50     28 to 33     36 to 47 
Winds(mph)            SE  9G21     SW 16G40     SW 22G41 
Precip Chc            70           70           0        
Precip Type           tstms        showers      sno/shr  
Liquid Amt            0.14         0.25         0.00     
Snow Ratio(SLR)       9:1          10:1         13:1     
Snow Amt(in)          0-1          1-4          0        

Snow Level            6000         5500         4000     
Disclaimer

Avalanche conditions change for better or worse continually. Backcountry travelers should be prepared to assess current conditions for themselves, plan their routes of travel accordingly, and never travel alone. Backcountry travelers can reduce their exposure to avalanche hazards by utilizing timbered trails and ridge routes and by avoiding open and exposed terrain with slope angles of 30 degrees or more. Backcountry travelers should carry the necessary avalanche rescue equipment such as a shovel, avalanche probe or probe ski poles, a rescue beacon and a well-equipped first aid kit.  For a recorded version of the Avalanche Advisory call (208)765-7323.