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EXPIRED ON February 18, 2013 @ 7:02 amPublished on February 17, 2013 @ 7:02 am
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Issued by
Nick Meyers - Shasta-Trinity National Forest
Overall, avalanches are unlikely today in the forecast area. A variety of conditions will can be found out there with most areas trending on the firm side. Wind slabs have bonded well to the widespread crust layer and are not a concern. A thick layer of facets still exists below our thick crust, however we do not have any slabs above this layer from our observations. With plentiful sunshine, any southerly aspect should warm nicely and any instability will be limited to roller balls during the warmest portion of the day. Other aspects will remain firm and funky!
Generally safe avalanche conditions. Watch for unstable snow on isolated terrain features.
Generally safe avalanche conditions. Watch for unstable snow on isolated terrain features.
Generally safe avalanche conditions. Watch for unstable snow on isolated terrain features.
Forecast Hotline: (530) 926-9613
Below Treeline is the lowest of three elevation bands used in the advisories. It extends from valley floors or snowline to Near Treeline. Open areas and sparse trees are possible. Snowfall tends to be less than the other elevation bands. Tree cover shelters the snow from wind effects.
×Near Treeline is the middle of the three elevation bands used in the advisories. It is a transition zone between dense forests and treeless alpine areas. It is the narrowest of the three elevation bands, extending only a few hundred feet above and below the treeline. It varies locally, and is not a constant elevation or width.
×Above Treeline is the highest of the three elevation bands used in the advisories. It includes alpine areas where the most snow falls and the winds are the strongest. It is not an exact elevation, but a characteristic of the terrain, beginning as the treeline transitions into open slopes extending to ridges and the tops of the highest peaks.
×North American Avalanche Danger Scale
Avalanche danger is determined by the likelihood, size and distribution of avalanches.
Watch for signs of unstable snow such as recent avalanches, cracking in the snow, and audible collapsing. Avoid traveling on or under similar slopes.
Safe backcountry travel requires training and experience. You control your own risk by choosing where, when and how you travel.
North American Avalanche Danger Scale
Avalanche danger is determined by the likelihood, size and distribution of avalanches.
Generally safe avalanche conditions. Watch for unstable snow on isolated terrain features.
Natural and human-triggered avalanches unlikely.
Small avalanches in isolated areas or extreme terrain.
Safe backcountry travel requires training and experience. You control your own risk by choosing where, when and how you travel.
North American Avalanche Danger Scale
Avalanche danger is determined by the likelihood, size and distribution of avalanches.
Heightened avalanche conditions on specific terrain features. Evaluate snow and terrain carefully; identify features of concern.
Natural avalanches unlikely; human-triggered avalanches possible.
Small avalanches in specific areas; or large avalanches in isolated areas.
Safe backcountry travel requires training and experience. You control your own risk by choosing where, when and how you travel.
North American Avalanche Danger Scale
Avalanche danger is determined by the likelihood, size and distribution of avalanches.
Dangerous avalanche conditions. Careful snowpack evaluation, cautious route-finding and conservative decision making essential.
Natural avalanches possible; human triggered avalanches likely.
Small avalanches in many areas; or large avalanches in specific areas; or very large avalanches in isolated areas.
Safe backcountry travel requires training and experience. You control your own risk by choosing where, when and how you travel.
North American Avalanche Danger Scale
Avalanche danger is determined by the likelihood, size and distribution of avalanches.
Very dangerous avalanche conditions. Travel in avalanche terrain not recommended.
Natural avalanches likely; human-triggered avalanches very likely.
Large avalanches in many areas; or very large avalanches in specific areas.
Safe backcountry travel requires training and experience. You control your own risk by choosing where, when and how you travel.
North American Avalanche Danger Scale
Avalanche danger is determined by the likelihood, size and distribution of avalanches.
Avoid all avalanche terrain.
Natural and human-triggered avalanches certain.
Large to very large avalanches in many areas.
Safe backcountry travel requires training and experience. You control your own risk by choosing where, when and how you travel.
Avalanche Problem 1: Wet Slab
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Certain
Very Likely
Likely
Possible
Unlikely
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Very Large
Large
Small
Wet snow avalanches unlikely today. More sunshine and daytime warming will give us soft corn snow on some southerly aspects, depending on elevation. Any wet snow instabilities will be limited to roller balls and the off chance of point releases.
Weather and Current Conditions
More clear and sunny skies will continue today, though a change in the weather pattern should begin this coming week. While precipitation totals do not look impressive, a pattern of wet weather is in store. Snow levels will be near town or lower with cold air dropping into the area. The first round of precip should arrive Monday night. Scattered showers will persist through the week.
http://www.wrh.noaa.gov/total_forecast/getprod.php?pil=REC&sid=MFR&wfo=mfr
CURRENT CONDITIONS at Bunny Flat (6950 ft)
| 0600 temperature: |
23 |
| Max. temperature in the last 24 hours: |
43 |
| Average wind direction during the last 24 hours: |
NW |
| Average wind speed during the last 24 hours: |
15 mi/hr |
| Maximum wind gust in the last 24 hours: |
35 mi/hr |
| New snowfall in the last 24 hours: |
0 inches |
| Total snow depth: |
96 inches |
Produced in partnership with the Medford NWS
| Weather |
Clear and Sunny |
Clear, becoming cloudy |
Partly Cloudy |
| Temperature (°F) |
Mid - 40's |
Mid - 20's |
Mid - 40's |
| Wind (mi/hr) |
North 10-15 mph |
East light |
South 10-15 mph |
| Precipitation SWE / Snowfall (in) |
/ 0 |
/ 0 |
/ 0 |
| Weather |
Sunny |
Clear, Breezy |
Chance of snow, after 4pm |
| Temperature (°F) |
32 |
17 |
24 |
| Wind (mi/hr) |
North 25-35 mph with gusts higher |
Northwest, becoming Southwest 0 |
Southwest 25-35 mph, increasing in the afternoon |
| Precipitation SWE / Snowfall (in) |
/ 0 |
/ 0 |
/ 1-2 |
Disclaimer
This advisory does not apply to Ski Areas or Highways and is for the Mt. Shasta, Castle Lake and Mt. Eddy back country. Use this information for guidance only. You may find different conditions in the back country and should travel accordingly. This advisory expires on midnight of the date it was posted unless otherwise noted.
