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Forecast Addendum - 12/17/2022 - 07:00am

Submitted by nmeyers on Sat, 12/17/2022 - 5:36am
Recent Observations: 

It has been very tranquilo this week with daily air stagnation advisories, inversions, clear and cold nights and beautiful sunny days. Not complaining...wait, yes we are. More snow, please!

  • Over the past 24 hours, temperatures have ranged from 30 to 44 F at 8,000 feet on Mt Shasta. In town, 15 to 36 F
  • Wind calm and variable to light, easterly
  • Snow depths: Mt Shasta ~56" / Castle and Eddy Mtns ~38" / East of Mt Shasta ~55"
  • Small, greasy loose-wet avalanches were observed on steep, protected, sunny southeast facing aspects below treeline yesterday. These slides were not big enough to bury anyone
  • Soft snow is becoming harder to find, but possible on those shady aspects
  • Snow below trees is a frozen, chunky, bomb crater disaster
  • Above treeline, wind packed powder, crusts and wild sastrugi features will be found
  • Surface hoar widespread below treeline in low-lying drainages

Any climbers out there? Undoubtedly, the high pressure and low avalanche danger has lured a few into the possibility of climbing the mountain. The main crux for climbers is still soft, unconsolidated snow. Skis, split board or snowshoes are mandatory to prevent arduous post-holing. When the terrain becomes too steep to skin, that's where the real work begins. Two days ago at 10,000 feet on Green Butte Ridge, even a week after the storm, I sank in calf deep. So...climbing is possible, the weather is nice, the avalanche danger low...but the post-holing situation is extreme! Remember too, the days are short, the nights are cold and the wind chill factor on the upper mountain can be severe. A winter climb of Mt. Shasta is a different beast. Be prepared.



 

Mountain Weather: 

A ridge of high pressure bringing us clear, cold nights and dry, stagnant days will begin to weaken. Still, we will experience much of the same for the next few days. Inversions have been the norm. Temperature spread between town and in the mountains has been 5-10 degrees warmer. The wind, once again, light and variable. If it wasn't winter, we'd probably be stoked on the current weather pattern. Longer term, Monday will be dry, but unsettled weather returns Tuesday as an upper trough sinks south into northwest Washington. This setup typically favors areas north of us like Crater Lake, but we're not looking a gift horse in the mouth. More updates as the time draws near!





Pine Marten tracks in Avalanche Gulch / Photo: J Koster



 

Today 7-8 Weather : 
Sunny
Today 7-8 Wind Direction: 
E
Today 8-9 Weather: 
Sunny
Today 8-9 Wind Direction: 
NE
Tomorrow 7-8 Weather: 
Sunny
Tomorrow 7-8 Wind Direction: 
NW
Tomorrow 8-9 Weather: 
Sunny and windy
Tomorrow 8-9 Wind Direction: 
N
Tonight 7-8 Weather: 
Clear
Tonight 7-8 Wind Direction: 
E
Tonight 8-9 Weather: 
Clear, blustery
Tonight 8-9 Wind Direction: 
N
Today 7-8 Temp: 
32
Today 8-9 Temp: 
23
Tomorrow 7-8 Temp: 
32
Tomorrow 8-9 Temp: 
19
Tonight 7-8 Temp: 
24
Tonight 8-9 Temp: 
11
19
18
33
23
31
30
44.5
34.5
56.65
0
0
Grey Butte Temp Cur: 
33
Grey Butte Temp Min: 
31
Grey Butte Temp Max: 
43
Grey Butte Temp Avg: 
36
Grey Butte Wind Cur: 
10.5
Grey Butte Wind Max: 
18
Grey Butte Wind Gust Max: 
30.66
Grey Butte Wind Avg: 
E
Castle Lake Temp Cur: 
29
Castle Lake Temp Min: 
25
Castle Lake Temp Max: 
34.5
Castle Lake Temp Avg: 
30
Mount Eddy Temp Cur: 
26
Mount Eddy Temp Min: 
24.5
Mount Eddy Temp Max: 
41
Mount Eddy Temp Avg: 
30.5
Mount Eddy Wind Cur: 
4
Mount Eddy Wind Max: 
4
Mount Eddy Wind Gust Max: 
4.45
Mount Eddy Wind Avg: 
WSW
Mount Eddy Snow Depth: 
37.91
Mount Eddy Snow New: 
0
Ash Creek Bowl Temp Cur: 
26
Ash Creek Bowl Temp Min: 
23.5
Ash Creek Bowl Temp Max: 
33.5
Ash Creek Bowl Temp Avg: 
27.5
Ash Creek Bowl Snow New: 
0
Ash Creek Ridge Temp Cur: 
32
Ash Creek Ridge Temp Min: 
20
Ash Creek Ridge Temp Max: 
42
Ash Creek Ridge Temp Avg: 
30
Ash Creek Ridge Wind Cur: 
6.5
Ash Creek Ridge Wind Max: 
8
Ash Creek Ridge Wind Gust Max: 
13.99
Ash Creek Ridge Wind Avg: 
E
Mt. Shasta City Temp Cur: 
16
Mt. Shasta City Temp Min: 
15
Mt. Shasta City Temp Max: 
36
Mt. Shasta City Temp Avg: 
24
Mt. Shasta City Wind Cur: 
0
Mt. Shasta City Wind Min: 
0
Mt. Shasta City Wind Max: 
5
Mt. Shasta City Wind Avg: 
2
Grey Butte Wind Min: 
0
Grey Butte Wind Avg: 
5.5
Mount Eddy Wind Min: 
0.5
Mount Eddy Wind Avg: 
2.5
Ash Creek Ridge Wind Min: 
0.5
Ash Creek Ridge Wind Avg: 
4
Ski Bowl Snow Settlement: 
0.7
Mount Eddy Snow Settlement: 
1.1
Ash Creek Bowl Snow Settlement: 
0
Measured Precipitation Oct: 
5.91
Normal Precipitation Oct: 
9.09
Percent Precipitation Oct: 
65
Measured Precipitation MTD: 
2.58
Normal Precipitation MTD: 
3.46
Percent Precipitation MTD: 
75
Measured Precipitation YTD: 
13.86
Normal Precipitation YTD: 
34.47
Percent Precipitation YTD: 
40
Today SWE: 
0.00
Tonight SWE: 
0.00
Tomorrow SWE: 
0.00
Today Wind Max 7-9: 
5
Tonight Wind Max 7-9: 
5
Tomorrow Wind Max 7-9: 
5
Today Wind Min 7-9: 
0
Tonight Wind Min 7-9: 
0
Tomorrow Wind Min 7-9: 
0
Today Wind Max 9-11: 
10
Tonight Wind Max 9-11: 
10
Tomorrow Wind Max 9-11: 
15
Today Wind Min 9-11: 
0
Tonight Wind Min 9-11: 
0
Tomorrow Wind Min 9-11: 
5
Today Snow Max 7-9: 
0.00
Tonight Snow Max 7-9: 
0.00
Tomorrow Snow Max 7-9: 
0.00
Today Snow Min 7-9: 
0.00
Tonight Snow Min 7-9: 
0.00
Tomorrow Snow Min 7-9: 
0.00
Today Snow Max 9-11: 
0.00
Tonight Snow Max 9-11: 
0.00
Tomorrow Snow Max 9-11: 
0.00
Today Snow Min 9-11: 
0.00
Tonight Snow Min 9-11: 
0.00
Tomorrow Snow Min 9-11: 
0.00
Ash Creek Bowl HS: 
55
Weather Station Discussion: 
The table below summarizes data reported from all of our weather stations over the last 24 hours.
Seasonal Stats Discussion: 
The wet season is October 1 through May 1. The table below summarizes recorded vs. normal precipitation amounts for the City of Mount Shasta.
Overall Danger Rating: 
Low
Current Time: 
4:00 AM