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Forecast Addendum - 12/9/2022 - 07:00am

Submitted by nmeyers on Fri, 12/09/2022 - 5:26am
Recent Observations: 

Yesterday, signs of avalanche danger were prevalent. Heavy snowfall, strong southwest wind and shooting cracks were observed in the Castle Lake area. Visibility was poor. Snow pit stability tests have been indicating the weak, sugary snow at the base of the snowpack is gaining strength. That said, we are in for a rapid loading event over the next 24 hours. Stay vigilant. Primary instability yesterday was in the upper half of the snowpack, wind affected terrain near treeline. Small slabs were easily triggered on test slopes. Shooting cracks beneath skis was commonplace. 

Over the past 24 hours on Mt Shasta:

  • Temperatures have ranged from 11° to 21° F at treeline. Average temperature: 18° F
  • The wind has blown out of the SW-W-NW. Max gusts reached 37 mph. Average speed: 13 mph
  • Snow accumulation: 7 inches / Snow-Water Equivalent: .65 inches
Mountain Weather: 

The next storm is shaping up over the Pacific and will make landfall today. A winter storm warning remains in effect from 4 PM this afternoon to 10 PM PST Saturday. Heavy, wet snow is expected. Nearly 3 inches of water is forecasted, which could mean up to 3 feet of new snow by the end of the storm. Strong wind out of the south/southwest is certain. Wind and precipitation will diminish late Saturday afternoon and into Saturday night. A cold air mass will move overhead Sunday, brining cold temperatures and dry weather for the next work week.

 



 

Today 7-8 Weather : 
Cloudy, breezy. Snow likely after 10am. Snow level rising from 2,600 feet to 3,500 feet
Today 7-8 Wind Direction: 
S
Today 8-9 Weather: 
Mostly cloudy, windy, snow likely after 10am
Today 8-9 Wind Direction: 
W
Tomorrow 7-8 Weather: 
Snow, heavy at times, windy
Tomorrow 7-8 Wind Direction: 
S
Tomorrow 8-9 Weather: 
Snow, heavy at times, windy
Tomorrow 8-9 Wind Direction: 
SW
Tonight 7-8 Weather: 
Snow, heavy at times, windy
Tonight 7-8 Wind Direction: 
S
Tonight 8-9 Weather: 
Snow, heavy at times, windy
Tonight 8-9 Wind Direction: 
SW
Today 7-8 Temp: 
23
Today 8-9 Temp: 
12
Tomorrow 7-8 Temp: 
27
Tomorrow 8-9 Temp: 
13
Tonight 7-8 Temp: 
22
Tonight 8-9 Temp: 
9
12
12
26
22
12
11
21
18
52.94
7.8
0.69
Grey Butte Temp Cur: 
12
Grey Butte Temp Min: 
11
Grey Butte Temp Max: 
20
Grey Butte Temp Avg: 
17
Grey Butte Wind Cur: 
14
Grey Butte Wind Max: 
18.5
Grey Butte Wind Gust Max: 
36.8
Grey Butte Wind Avg: 
WNW
Castle Lake Temp Cur: 
16.5
Castle Lake Temp Min: 
16.5
Castle Lake Temp Max: 
26.5
Castle Lake Temp Avg: 
23.5
Mount Eddy Temp Cur: 
13.5
Mount Eddy Temp Min: 
13.5
Mount Eddy Temp Max: 
24
Mount Eddy Temp Avg: 
21
Mount Eddy Wind Cur: 
2
Mount Eddy Wind Max: 
3.5
Mount Eddy Wind Gust Max: 
6.37
Mount Eddy Wind Avg: 
SW
Mount Eddy Snow Depth: 
33.56
Mount Eddy Snow New: 
4.4
Ash Creek Bowl Temp Cur: 
12.5
Ash Creek Bowl Temp Min: 
12.5
Ash Creek Bowl Temp Max: 
22
Ash Creek Bowl Temp Avg: 
20
Ash Creek Bowl Snow New: 
3.7
Ash Creek Ridge Temp Cur: 
10
Ash Creek Ridge Temp Min: 
10
Ash Creek Ridge Temp Max: 
19.5
Ash Creek Ridge Temp Avg: 
17
Ash Creek Ridge Wind Cur: 
0
Ash Creek Ridge Wind Max: 
0
Ash Creek Ridge Wind Gust Max: 
0
Mt. Shasta City Temp Cur: 
28
Mt. Shasta City Temp Min: 
28
Mt. Shasta City Temp Max: 
35
Mt. Shasta City Temp Avg: 
32.5
Mt. Shasta City Wind Cur: 
0
Mt. Shasta City Wind Min: 
0
Mt. Shasta City Wind Max: 
5
Mt. Shasta City Wind Avg: 
2.5
Mt. Shasta City Wind Avg: 
N
Sand Flat Comments: 
snow depth n/a
Grey Butte Wind Min: 
5.5
Grey Butte Wind Avg: 
13
Mount Eddy Wind Min: 
0.5
Mount Eddy Wind Avg: 
2
Ash Creek Ridge Wind Min: 
0
Ash Creek Ridge Wind Avg: 
0
Ski Bowl Snow Settlement: 
0
Mount Eddy Snow Settlement: 
0
Ash Creek Bowl Snow Settlement: 
0
Measured Precipitation Oct: 
5.49
Normal Precipitation Oct: 
7.32
Percent Precipitation Oct: 
75
Measured Precipitation MTD: 
2.16
Normal Precipitation MTD: 
1.69
Percent Precipitation MTD: 
128
Measured Precipitation YTD: 
13.44
Normal Precipitation YTD: 
32.7
Percent Precipitation YTD: 
41
Today SWE: 
0.08
Tonight SWE: 
0.98
Tomorrow SWE: 
1.25
Today Wind Max 7-9: 
20
Tonight Wind Max 7-9: 
30
Tomorrow Wind Max 7-9: 
30
Today Wind Min 7-9: 
10
Tonight Wind Min 7-9: 
20
Tomorrow Wind Min 7-9: 
20
Today Wind Max 9-11: 
35
Tonight Wind Max 9-11: 
70
Tomorrow Wind Max 9-11: 
70
Today Wind Min 9-11: 
25
Tonight Wind Min 9-11: 
60
Tomorrow Wind Min 9-11: 
60
Today Snow Max 7-9: 
5.00
Tonight Snow Max 7-9: 
23.00
Tomorrow Snow Max 7-9: 
21.00
Today Snow Min 7-9: 
3.00
Tonight Snow Min 7-9: 
17.00
Tomorrow Snow Min 7-9: 
15.00
Today Snow Max 9-11: 
5.00
Tonight Snow Max 9-11: 
27.00
Tomorrow Snow Max 9-11: 
27.00
Today Snow Min 9-11: 
3.00
Tonight Snow Min 9-11: 
21.00
Tomorrow Snow Min 9-11: 
21.00
Ash Creek Bowl HS: 
50.75
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: 
High
Current Time: 
4:00 AM