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Forecast Addendum - 12/29/2022 - 07:00am

Submitted by nmeyers on Thu, 12/29/2022 - 5:30am
Recent Observations: 
  • The December 26/27 storm brought 8–14 inches of dense snow that is well pasted to existing snow surfaces
  • Little concern remains for existing weak layers. The snowpack is set up well for a fresh load of snow
  • In the last 24 hours:
    • Temperatures have ranged from 16 to 26 deg F with strong wind out of the NW switching to SW
    • Blowing snow and strong winds have been observed near and above treeline. Visibility was mostly clear in the morning and poor in the afternoon
    • 5 inches new snow at treeline on Mt Shasta this morning. Total height of snow - 65 inches


  •  
Mountain Weather: 

An active pattern of weather will play out over the next few days. Heavy snow, wind and ample precipitation is certain. A winter weather advisory, issued by the NWS, is in effect until 10pm this evening. The first wave will do its thing this morning, tapering off by 10am. The second, more robust wave will begin later today around 1600 hours. Snow levels will linger near 4,000 feet today, rising to 5,000 feet tonight. With about an inch of water expected to fall over the next 24 hours, we could see a foot of new snow on the mountain by tomorrow morning. Strong southwesterly wind will blow 30+ mi/hr over exposed terrain. The next system will approach the region around Monday.

Today 7-8 Weather : 
Snow, heavy at times, breezy. Snow level 4,000 feet
Today 7-8 Wind Direction: 
S
Today 8-9 Weather: 
Snow, heavy at times, windy
Today 8-9 Wind Direction: 
SW
Tomorrow 7-8 Weather: 
Snow, heavy at times, windy. Snow level 5,600 feet
Tomorrow 7-8 Wind Direction: 
SW
Tomorrow 8-9 Weather: 
Snow, heavy at times, windy
Tomorrow 8-9 Wind Direction: 
SW
Tonight 7-8 Weather: 
Snow, heavy at times, windy. Snow level 5,000 feet
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: 
25
Today 8-9 Temp: 
18
Tomorrow 7-8 Temp: 
34
Tomorrow 8-9 Temp: 
23
Tonight 7-8 Temp: 
26
Tonight 8-9 Temp: 
15
24
20
29
24
44
2
20.5
16
26
20
64.17
4
0.47
Grey Butte Temp Cur: 
19.5
Grey Butte Temp Min: 
14
Grey Butte Temp Max: 
24
Grey Butte Temp Avg: 
18.5
Grey Butte Wind Cur: 
8.5
Grey Butte Wind Max: 
24.5
Grey Butte Wind Gust Max: 
49.07
Grey Butte Wind Avg: 
NW
Castle Lake Temp Cur: 
28
Castle Lake Temp Min: 
25
Castle Lake Temp Max: 
34
Castle Lake Temp Avg: 
28.5
Mount Eddy Temp Cur: 
24
Mount Eddy Temp Min: 
16.5
Mount Eddy Temp Max: 
28.5
Mount Eddy Temp Avg: 
23
Mount Eddy Wind Cur: 
2.5
Mount Eddy Wind Max: 
2.5
Mount Eddy Wind Gust Max: 
4.29
Mount Eddy Wind Avg: 
S
Mount Eddy Snow Depth: 
42.55
Mount Eddy Snow New: 
3
Ash Creek Bowl Temp Cur: 
22
Ash Creek Bowl Temp Min: 
18.5
Ash Creek Bowl Temp Max: 
25
Ash Creek Bowl Temp Avg: 
20.5
Ash Creek Bowl Snow New: 
2
Ash Creek Ridge Temp Cur: 
18.5
Ash Creek Ridge Temp Min: 
15.5
Ash Creek Ridge Temp Max: 
23.5
Ash Creek Ridge Temp Avg: 
17.5
Ash Creek Ridge Wind Cur: 
0
Ash Creek Ridge Wind Max: 
0
Ash Creek Ridge Wind Gust Max: 
0.04
Mt. Shasta City Temp Cur: 
33
Mt. Shasta City Temp Min: 
29
Mt. Shasta City Temp Max: 
41
Mt. Shasta City Temp Avg: 
35
Mt. Shasta City Wind Cur: 
3
Mt. Shasta City Wind Min: 
0
Mt. Shasta City Wind Max: 
5
Mt. Shasta City Wind Avg: 
0.5
Mt. Shasta City Wind Avg: 
N
Grey Butte Wind Min: 
1.5
Grey Butte Wind Avg: 
10
Caslte Lake Comments: 
snow depth n/a
Mount Eddy Wind Min: 
1
Mount Eddy Wind Avg: 
1.5
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: 
7.79
Normal Precipitation Oct: 
11.64
Percent Precipitation Oct: 
67
Measured Precipitation MTD: 
4.46
Normal Precipitation MTD: 
6.01
Percent Precipitation MTD: 
74
Measured Precipitation YTD: 
15.74
Normal Precipitation YTD: 
37.02
Percent Precipitation YTD: 
43
Today SWE: 
0.38
Tonight SWE: 
0.81
Tomorrow SWE: 
0.78
Today Wind Max 7-9: 
25
Tonight Wind Max 7-9: 
30
Tomorrow Wind Max 7-9: 
25
Today Wind Min 7-9: 
15
Tonight Wind Min 7-9: 
20
Tomorrow Wind Min 7-9: 
15
Today Wind Max 9-11: 
65
Tonight Wind Max 9-11: 
55
Tomorrow Wind Max 9-11: 
70
Today Wind Min 9-11: 
55
Tonight Wind Min 9-11: 
40
Tomorrow Wind Min 9-11: 
60
Today Snow Max 7-9: 
8.00
Tonight Snow Max 7-9: 
8.00
Tomorrow Snow Max 7-9: 
5.00
Today Snow Min 7-9: 
4.00
Tonight Snow Min 7-9: 
4.00
Tomorrow Snow Min 7-9: 
3.00
Today Snow Max 9-11: 
8.00
Tonight Snow Max 9-11: 
10.00
Tomorrow Snow Max 9-11: 
10.00
Today Snow Min 9-11: 
6.00
Tonight Snow Min 9-11: 
8.00
Tomorrow Snow Min 9-11: 
8.00
Ash Creek Bowl HS: 
54.86
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: 
Considerable
Current Time: 
4:00 AM