Avalanche Advisory: Friday - Feb 14, 2020

THIS AVALANCHE ADVISORY EXPIRED ON February 15, 2020 @ 6:56 am
Avalanche Advisory published on February 14, 2020 @ 6:56 am
Issued by Josh Feinberg - Eastern Sierra Avalanche Center

LOW avalanche danger exists at all elevations.  Surface softening of sunny aspects will occur, but remain mostly unconcerning.  Use caution navigating thru variable and firm conditions, and be on the lookout for obstacles.  

 

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: Normal Caution
  • Type ?

Sunny skies and mild temperatures reaching the mid to upper 30s around 10,000’ will again lead to some surfacing softening on sunny aspects (notably SE-S-SW) as they warm today from the sun.  This surface melt will continue to remain mostly unconcerning especially as SW winds are forecasted to be a little bit stronger and temperatures a couple of degrees cooler than yesterday.  The snow on these sunny aspects has become well adjusted to the freeze-thaw cycle, and without significantly warmer temperatures and higher “spring time” sun angles loose wet instabilities will remain minimal.  The period of daily “thaw” however will offer improved riding conditions if your timing is right.  

 

The biggest concern to safety is still the firm and variable conditions that abound in unsheltered areas. A fall in many places would be difficult to self arrest.  Use proper tools such as ski crampons, crampons and ice ax, and most importantly good judgement.   

 
advisory discussion

It’s been a long time since we’ve gotten any appreciable snowfall.  Periods of extreme winds from every direction over the past month and a half have led to a moon-scape on exposed slopes of cratered sastrugi snow to firm and breakable windboards.  Our shallow snowpack is hanging on .. in some places better than others.  More southerly aspects tend to be smoother, but pose their own dangers of even more obstacles and frozen firm surfaces if the timing is off.  Facets continue to form, and in more sheltered shady areas softer snow can still be found. 

 
Weather and CURRENT CONDITIONS
weather summary

Today brings more mild and sunny conditions, with high temperatures a couple of degrees cooler than yesterday reaching the mid to upper 30s around 10,000’.  SW winds gusting up to 40mph over ridge tops in the morning will become light in the afternoon.  Expect the warmest temperatures of the week on Saturday as SW winds increase substantially Saturday night thru Sunday as a low pressure system moves in well north of us.  Unfortunately chances of any precipitation at all from this system has dropped for us.  

 

The outlook for snow continues to look grim thru the end of the month.  Do your snow dances, sell your snow blowers, plan trips to snowier places, and hopefully that could make it snow here!

Two-Day Mountain Weather Forecast Produced in partnership with the Reno NWS
For 8,000 ft. to 10,000 ft.
Friday Friday Night Saturday
Weather: Sunny. Snow levels below 7000 feet. Chance of precipitation is 0%. Clear. Snow levels 7000 feet decreasing to below 7000 feet after midnight. Chance of precipitation is 0%. Partly cloudy. Snow levels below 7000 feet increasing to 7500 feet in the afternoon. Chance of precipitation is 0%.
Temperatures: 37 to 47. deg. F. 20 to 26. deg. F. 41 to 51. deg. F.
Mid Slope Winds: Southwest around 15 mph with gusts to 35 mph in the morning becoming light. Light winds. Gusts up to 25 mph in the evening. Light winds. Gusts up to 25 mph in the morning.
Expected snowfall: 0 in. 0 in. 0 in.
Over 10,000 ft.
Friday Friday Night Saturday
Weather: Sunny. Snow levels below 7000 feet. Chance of precipitation is 0%. Partly cloudy then becoming clear. Snow levels 7000 feet decreasing to below 7000 feet after midnight. Chance of precipitation is 0%. Partly cloudy. Snow levels below 7000 feet increasing to 7500 feet in the afternoon. Chance of precipitation is 0%.
Temperatures: 29 to 37. deg. F. 15 to 20. deg. F. 33 to 41. deg. F.
Ridge Top Winds: Southwest 15 to 25 mph with gusts to 40 mph in the morning becoming light. West around 15 mph with gusts to 25 mph. West around 15 mph with gusts to 30 mph.
Expected snowfall: 0 in. 0 in. 0 in.
Disclaimer
This Avalanche Advisory is designed to generally describe avalanche conditions where local variations always occur. This product only applies to backcountry areas located outside established ski area boundaries. The information in this Avalanche Advisory is provided by the Eastern Sierra Avalanche Center, who is solely responsible for its content.

ESAC receives significant financial support from ...