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Forecast Addendum 3/24/2023 - 07:00am

Submitted by nmeyers on Fri, 03/24/2023 - 5:52am
Recent Observations: 

It's that time of year: if you don't like the weather, just wait 10 minutes. A snow flurry here, blue sky there...you don't know what you're going to get. Spatial variability has been a theme for the forecast area. Yesterday's weather trend brought mostly cloudy sky with a cloud deck near 6,500 feet. Light on again, off again snow fall remained throughout the day. Pending your location, new snow totals range from just a skiff to about six inches.  Over the past 24 hours, temperatures have ranged from 12 to 29 degrees near treeline. Wind has blow predominantly out of the northwest, averaging 21 mi/hr with gusts to 67 mi/hr. The most notable avalanche hazard has been freshly formed cornices along ridges and small, isolated wind slabs. See the full observation from Gray Butte yesterday.

Mountain Weather: 

Snow showers linger as cold, moist, unstable air swings through the forecast area. This unusually cold, onshore flow will persist over the next 24 hours. We trend notably drier by Saturday night and Sunday morning as high pressure builds. We're expecting cold high temperatures of 39 degrees in Mount Shasta City tomorrow. The average high temperature is 54 degrees for this time of year. A stiff northwest wind is certain today over higher terrain. Wind should slack off later this weekend. Longer term, all signs are pointing towards Monday afternoon through Tuesday morning as being the main event. There is good agreement in models that the Mount Shasta area will get moderate to heavy snow with snowfall rates pushing 1–2 inches per hour, with 24 hour storm total between 1–2 feet along the I-5 corridor and 2–3 feet along highway 89 east of the interstate. Winter isn't over, folks! 

 

Today 7-8 Weather : 
A 50 percent chance of snow showers, partly sunny, breezy. Snow level near 3,000 feet
Today 7-8 Wind Direction: 
W
Today 8-9 Weather: 
Snow showers likely, mainly after 11am. Partly sunny and cold, windy
Today 8-9 Wind Direction: 
NW
Tomorrow 7-8 Weather: 
A 50 percent chance of snow showers before 11pm. Partly cloudy. Snow level near 3,000 feet
Tomorrow 7-8 Wind Direction: 
NW
Tomorrow 8-9 Weather: 
A 50 percent chance of snow showers, mainly after 11am. Partly sunny and cold, windy
Tomorrow 8-9 Wind Direction: 
NW
Tonight 7-8 Weather: 
A 10 percent chance of snow showers before 11pm. Partly cloudy. Snow level near 1,000 feet
Tonight 7-8 Wind Direction: 
NW
Tonight 8-9 Weather: 
A 20 percent chance of snow showers before 11pm, partly cloudy, windy
Tonight 8-9 Wind Direction: 
NW
Today 7-8 Temp: 
22
Today 8-9 Temp: 
6
Tomorrow 7-8 Temp: 
24
Tomorrow 8-9 Temp: 
10
Tonight 7-8 Temp: 
11
Tonight 8-9 Temp: 
-4
14
14
33
22
150
0
0
12.5
12.5
29
19.5
192.9
0
0.16
Grey Butte Temp Cur: 
12
Grey Butte Temp Min: 
11
Grey Butte Temp Max: 
27.5
Grey Butte Temp Avg: 
18
Grey Butte Wind Cur: 
37
Grey Butte Wind Max: 
39
Grey Butte Wind Gust Max: 
67.47
Grey Butte Wind Avg: 
WNW
Castle Lake Snow Depth: 
162.2
Castle Lake Snow New: 
0
Mount Eddy Temp Cur: 
15
Mount Eddy Temp Min: 
15
Mount Eddy Temp Max: 
33.5
Mount Eddy Temp Avg: 
22.5
Mount Eddy Wind Cur: 
2
Mount Eddy Wind Max: 
3
Mount Eddy Wind Gust Max: 
8.66
Mount Eddy Wind Avg: 
SE
Mount Eddy Snow Depth: 
149.6
Mount Eddy Snow New: 
0
Ash Creek Bowl Temp Cur: 
11
Ash Creek Bowl Temp Min: 
11
Ash Creek Bowl Temp Max: 
30
Ash Creek Bowl Temp Avg: 
20
Ash Creek Bowl Snow New: 
0
Ash Creek Ridge Temp Cur: 
8.5
Ash Creek Ridge Temp Min: 
8
Ash Creek Ridge Temp Max: 
27.5
Ash Creek Ridge Temp Avg: 
16
Ash Creek Ridge Wind Cur: 
0
Ash Creek Ridge Wind Max: 
23.5
Ash Creek Ridge Wind Gust Max: 
36.96
Mt. Shasta City Temp Cur: 
28
Mt. Shasta City Temp Min: 
27
Mt. Shasta City Temp Max: 
44
Mt. Shasta City Temp Avg: 
35
Mt. Shasta City Wind Cur: 
0
Mt. Shasta City Wind Min: 
0
Mt. Shasta City Wind Max: 
5
Mt. Shasta City Wind Avg: 
1
Mt. Shasta City Wind Avg: 
N
Ski Bowl Comments: 
Water content down
Grey Butte Wind Min: 
8.5
Grey Butte Wind Avg: 
20
Caslte Lake Comments: 
Temp sensor down
Mount Eddy Wind Min: 
1
Mount Eddy Wind Avg: 
2
Ash Creek Ridge Wind Min: 
0
Ash Creek Ridge Wind Avg: 
7.5
Sand Flat Snow Settlement: 
0
Ski Bowl Snow Settlement: 
1.1
Castle Lake Snow Settlement: 
5.9
Mount Eddy Snow Settlement: 
0.2
Ash Creek Bowl Snow Settlement: 
0
Measured Precipitation Oct: 
37.24
Normal Precipitation Oct: 
29.27
Percent Precipitation Oct: 
127
Measured Precipitation MTD: 
7.53
Normal Precipitation MTD: 
4.33
Percent Precipitation MTD: 
174
Measured Precipitation YTD: 
28.11
Normal Precipitation YTD: 
17.03
Percent Precipitation YTD: 
165
Today SWE: 
0.05
Tonight SWE: 
0.00
Tomorrow SWE: 
0.01
Today Wind Max 7-9: 
15
Tonight Wind Max 7-9: 
15
Tomorrow Wind Max 7-9: 
15
Today Wind Min 7-9: 
10
Tonight Wind Min 7-9: 
10
Tomorrow Wind Min 7-9: 
10
Today Wind Max 9-11: 
40
Tonight Wind Max 9-11: 
40
Tomorrow Wind Max 9-11: 
35
Today Wind Min 9-11: 
30
Tonight Wind Min 9-11: 
30
Tomorrow Wind Min 9-11: 
25
Today Snow Max 7-9: 
2.00
Tonight Snow Max 7-9: 
3.00
Tomorrow Snow Max 7-9: 
1.00
Today Snow Min 7-9: 
1.00
Tonight Snow Min 7-9: 
1.00
Tomorrow Snow Min 7-9: 
0.00
Today Snow Max 9-11: 
2.00
Tonight Snow Max 9-11: 
0.00
Tomorrow Snow Max 9-11: 
1.00
Today Snow Min 9-11: 
1.00
Tonight Snow Min 9-11: 
0.00
Tomorrow Snow Min 9-11: 
0.00
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: 
Low
Current Time: 
3:00 AM