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Forecast Addendum 3/22/2023 - 07:00am

Submitted by efalconer on Wed, 03/22/2023 - 5:34am
Recent Observations: 

The most significant finding from a tour up to Castle Lake was the lacking amount of fresh snow available for wind transport. Wind effected surfaces were evident near treeline but no blowing snow was observed. It’s likely that a sub-regional difference in snowfall amounts between the Castle lake area and Mount Shasta occurred. Or any snow that did fall has all been blown away. All aspects below treeline held a punchy surface crust. The majority of terrain near treeline is locked up with frozen surfaces. Protected northerly aspects hold light amounts of soft wind effected snow. Monstrous cornices loom off the ridge tops with signs of old cornice fall and avalanche debris beneath them.   


Mountain Weather: 

Today will bring forth low cloud cover and cool temperatures for the mountains and lower elevations. Winds will blow from the west and southwest at calm to light speeds. As the low-pressure system off the central coast of California moves inland and begins to dissipate, another upper level trough will approach the west cost this morning and move on shore later today. Expect precipitation chances to increase significantly across the Cascades westward this afternoon. Snow showers will remain light with low snow amounts expected. Snow levels could drop as low as 3,000 feet tonight as the tough move through.  A chance for moderate precipitation will arrive tomorrow as a cold front moves onshore. 

Today 7-8 Weather : 
Snow showers likely, mainly after 11am. Mostly cloudy. Chance of precipitation is 70%. Freezing level 4300 feet
Today 7-8 Wind Direction: 
SW
Today 8-9 Weather: 
Snow showers likely, mainly after 11am. Mostly cloudy. Wind gusts as high as 20 mph. Chance of precipitation is 70%
Today 8-9 Wind Direction: 
W
Tomorrow 7-8 Weather: 
Snow showers likely, mainly after 11am. Winds could gust as high as 34 mph. Chance of precipitation is 80%. Freezing level at 3200 feet
Tomorrow 7-8 Wind Direction: 
SW
Tomorrow 8-9 Weather: 
Snow showers, mainly after 11am. Wind chill values as low as -15. Winds could gust as high as 44 mph. Chance of precipitation is 90%
Tomorrow 8-9 Wind Direction: 
W
Tonight 7-8 Weather: 
Snow showers likely, mainly before 11pm. Mostly cloudy. Freezing level 4200 foot
Tonight 7-8 Wind Direction: 
W
Tonight 8-9 Weather: 
Snow showers likely, mainly before 11pm. Mostly cloudy. Wind chill values as low as -9. Wind gusts as high as 23 mph. Chance of precipitation is 70%
Tonight 8-9 Wind Direction: 
W
Today 7-8 Temp: 
33
Today 8-9 Temp: 
15
Tomorrow 7-8 Temp: 
32
Tomorrow 8-9 Temp: 
19
Tonight 7-8 Temp: 
23
Tonight 8-9 Temp: 
7
20
13
40
25
147
0
0
22.5
19
28.5
23.5
188.5
0
0
Grey Butte Temp Cur: 
21.5
Grey Butte Temp Min: 
19
Grey Butte Temp Max: 
27
Grey Butte Temp Avg: 
22.5
Grey Butte Wind Cur: 
8
Grey Butte Wind Max: 
37
Grey Butte Wind Gust Max: 
67.47
Grey Butte Wind Avg: 
E
Castle Lake Temp Cur: 
78.5
Castle Lake Temp Min: 
61.5
Castle Lake Temp Max: 
104
Castle Lake Temp Avg: 
80.5
Castle Lake Snow Depth: 
169
Castle Lake Snow New: 
0
Mount Eddy Temp Cur: 
25
Mount Eddy Temp Min: 
19
Mount Eddy Temp Max: 
35.5
Mount Eddy Temp Avg: 
27
Mount Eddy Wind Cur: 
0.5
Mount Eddy Wind Max: 
2.5
Mount Eddy Wind Gust Max: 
6.33
Mount Eddy Wind Avg: 
SW
Mount Eddy Snow Depth: 
153.1
Mount Eddy Snow New: 
0.7
Ash Creek Bowl Temp Cur: 
21.5
Ash Creek Bowl Temp Min: 
17.5
Ash Creek Bowl Temp Max: 
32.5
Ash Creek Bowl Temp Avg: 
24
Ash Creek Bowl Snow New: 
0
Ash Creek Ridge Temp Cur: 
20
Ash Creek Ridge Temp Min: 
14
Ash Creek Ridge Temp Max: 
30.5
Ash Creek Ridge Temp Avg: 
20.5
Ash Creek Ridge Wind Cur: 
8
Ash Creek Ridge Wind Max: 
8
Ash Creek Ridge Wind Gust Max: 
13.79
Ash Creek Ridge Wind Avg: 
S
Mt. Shasta City Temp Cur: 
35
Mt. Shasta City Temp Min: 
26
Mt. Shasta City Temp Max: 
46
Mt. Shasta City Temp Avg: 
36
Mt. Shasta City Wind Cur: 
0
Mt. Shasta City Wind Min: 
0
Mt. Shasta City Wind Max: 
6
Mt. Shasta City Wind Avg: 
1.5
Mt. Shasta City Wind Avg: 
N
Ski Bowl Comments: 
Water content down
Grey Butte Wind Min: 
4.5
Grey Butte Wind Avg: 
25.5
Caslte Lake Comments: 
Temp sensor down
Mount Eddy Wind Min: 
0.5
Mount Eddy Wind Avg: 
2
Ash Creek Ridge Wind Min: 
2
Ash Creek Ridge Wind Avg: 
3.5
Sand Flat Snow Settlement: 
3
Ski Bowl Snow Settlement: 
1.7
Castle Lake Snow Settlement: 
0.9
Mount Eddy Snow Settlement: 
0
Ash Creek Bowl Snow Settlement: 
0
Measured Precipitation Oct: 
36.5
Normal Precipitation Oct: 
28.5
Percent Precipitation Oct: 
128
Measured Precipitation MTD: 
6.79
Normal Precipitation MTD: 
3.56
Percent Precipitation MTD: 
191
Measured Precipitation YTD: 
27.37
Normal Precipitation YTD: 
16.26
Percent Precipitation YTD: 
168
Today SWE: 
0.09
Tonight SWE: 
0.16
Tomorrow SWE: 
0.12
Today Wind Max 7-9: 
15
Tonight Wind Max 7-9: 
15
Tomorrow Wind Max 7-9: 
25
Today Wind Min 7-9: 
5
Tonight Wind Min 7-9: 
5
Tomorrow Wind Min 7-9: 
15
Today Wind Max 9-11: 
20
Tonight Wind Max 9-11: 
20
Tomorrow Wind Max 9-11: 
30
Today Wind Min 9-11: 
10
Tonight Wind Min 9-11: 
10
Tomorrow Wind Min 9-11: 
20
Today Snow Max 7-9: 
2.00
Tonight Snow Max 7-9: 
2.00
Tomorrow Snow Max 7-9: 
3.00
Today Snow Min 7-9: 
1.00
Tonight Snow Min 7-9: 
1.00
Tomorrow Snow Min 7-9: 
1.00
Today Snow Max 9-11: 
3.00
Tonight Snow Max 9-11: 
3.00
Tomorrow Snow Max 9-11: 
4.00
Today Snow Min 9-11: 
1.00
Tonight Snow Min 9-11: 
1.00
Tomorrow Snow Min 9-11: 
2.00
Ash Creek Bowl HS: 
174.7
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: 
Moderate
Current Time: 
2:00 AM