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Forecast Addendum 1/3/2023 - 07:00am

Submitted by efalconer on Tue, 01/03/2023 - 5:55am
Recent Observations: 

Observations from yesterday on Green Butte and Gray Butte held themes of crusty surface conditions with a bit of snow on top. Tuesday's weather squall delivered 1.5 inches of new snow, which fell on top of a variety of old snow surfaces. New snow may not bond well to these irregular surfaces and act as a good sliding surface for new snow. Over the last 24 hours, winds have averaged in the single digits out of the W-SW, with a max gust of 30 mph overnight. Near treeline, protected east aspects held the best snow conditions from recent northerly winds, and dry loose snow was easy to move in steep protected areas.



Dust on crust found near treeline on a westerly aspect, Gray Butte, 1.2.2023 - Photo: E Falconer

Mountain Weather: 

 The winter weather advisory has ended across Siskiyou County early, as showers have let up. New snow amounts will generally be below one inch. A short-lived prevailing storm pulse passed through the region Tuesday, bringing 1.5 inches to Mount Shasta. Another weather pulse will pass through the area starting midday today, with lite precipitation amounts. These are precursors to the robust low-pressure system approaching from the west-southwest and looking to arrive on Wednesday. Today through Wednesday, temperatures look to remain below freezing above 6,000 feet, with moderate to strong winds trending slightly to S-SE. If all pans out well, we could see 5-8 inches of new snow in the next 24 hours.

 



 

Today 7-8 Weather : 
Snow likely, mainly between 10am and 4pm. Mostly cloudy. Chance of precipitation is 60%.
Today 7-8 Wind Direction: 
S
Today 8-9 Weather: 
Snow likely, mainly between 10am and 4pm. Mostly cloudy. Wind chill values as low as -16.
Today 8-9 Wind Direction: 
SW
Tomorrow 7-8 Weather: 
Strong winds. Cloudy with snow. Chance of precipitation is 90%.
Tomorrow 7-8 Wind Direction: 
SE
Tomorrow 8-9 Weather: 
Strong winds. Snow, mainly after 10am. The snow could be heavy at times. Cloudy with 90 percent chance of snow. Wind chill as low as -11
Tomorrow 8-9 Wind Direction: 
S
Tonight 7-8 Weather: 
Snow likely, mainly after 4am. Mostly cloudy. Chance of precipitation is 60%.
Tonight 7-8 Wind Direction: 
S
Tonight 8-9 Weather: 
A 30 percent chance of snow, mainly after 4am. Mostly cloudy. Wind chill values as low as -13.
Tonight 8-9 Wind Direction: 
WSW
Today 7-8 Temp: 
29
Today 8-9 Temp: 
16
Tomorrow 7-8 Temp: 
32
Tomorrow 8-9 Temp: 
22
Tonight 7-8 Temp: 
26
Tonight 8-9 Temp: 
17
21
17
27
21
51
1
0
16
16
29.5
21.5
72.4
1.5
0.16
Grey Butte Temp Cur: 
15.5
Grey Butte Temp Min: 
15
Grey Butte Temp Max: 
31.5
Grey Butte Temp Avg: 
20.5
Grey Butte Wind Cur: 
3.5
Grey Butte Wind Max: 
12
Grey Butte Wind Gust Max: 
30.66
Grey Butte Wind Avg: 
W
Castle Lake Temp Cur: 
24
Castle Lake Temp Min: 
24
Castle Lake Temp Max: 
32
Castle Lake Temp Avg: 
27
Mount Eddy Temp Cur: 
14.5
Mount Eddy Temp Min: 
13.5
Mount Eddy Temp Max: 
30
Mount Eddy Temp Avg: 
22
Mount Eddy Wind Cur: 
2.5
Mount Eddy Wind Max: 
3
Mount Eddy Wind Gust Max: 
4.06
Mount Eddy Wind Avg: 
WSW
Mount Eddy Snow Depth: 
42.66
Mount Eddy Snow New: 
0.3
Ash Creek Bowl Temp Cur: 
15.5
Ash Creek Bowl Temp Min: 
15.5
Ash Creek Bowl Temp Max: 
30
Ash Creek Bowl Temp Avg: 
21.5
Ash Creek Bowl Snow New: 
0
Ash Creek Ridge Temp Cur: 
13
Ash Creek Ridge Temp Min: 
13
Ash Creek Ridge Temp Max: 
25
Ash Creek Ridge Temp Avg: 
18
Ash Creek Ridge Wind Cur: 
0
Ash Creek Ridge Wind Max: 
27.5
Ash Creek Ridge Wind Gust Max: 
42.45
Mt. Shasta City Temp Cur: 
30
Mt. Shasta City Temp Min: 
25
Mt. Shasta City Temp Max: 
37
Mt. Shasta City Temp Avg: 
30.5
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
Grey Butte Wind Min: 
1.5
Grey Butte Wind Avg: 
7
Mount Eddy Wind Min: 
0.5
Mount Eddy Wind Avg: 
2
Ash Creek Ridge Wind Min: 
0
Ash Creek Ridge Wind Avg: 
9
Sand Flat Snow Settlement: 
0
Ski Bowl Snow Settlement: 
0
Mount Eddy Snow Settlement: 
0
Ash Creek Bowl Snow Settlement: 
116.1
Measured Precipitation Oct: 
9.18
Normal Precipitation Oct: 
12.68
Percent Precipitation Oct: 
72
Measured Precipitation MTD: 
0.05
Normal Precipitation MTD: 
0.44
Percent Precipitation MTD: 
11
Measured Precipitation YTD: 
0.05
Normal Precipitation YTD: 
0.44
Percent Precipitation YTD: 
11
Today SWE: 
0.06
Tonight SWE: 
0.03
Tomorrow SWE: 
0.05
Today Wind Max 7-9: 
35
Tonight Wind Max 7-9: 
16
Tomorrow Wind Max 7-9: 
35
Today Wind Min 7-9: 
5
Tonight Wind Min 7-9: 
6
Tomorrow Wind Min 7-9: 
15
Today Wind Max 9-11: 
46
Tonight Wind Max 9-11: 
45
Tomorrow Wind Max 9-11: 
45
Today Wind Min 9-11: 
26
Tonight Wind Min 9-11: 
35
Tomorrow Wind Min 9-11: 
15
Today Snow Max 7-9: 
3.00
Tonight Snow Max 7-9: 
3.00
Tomorrow Snow Max 7-9: 
9.00
Today Snow Min 7-9: 
1.00
Tonight Snow Min 7-9: 
1.00
Tomorrow Snow Min 7-9: 
5.00
Today Snow Max 9-11: 
3.00
Tonight Snow Max 9-11: 
4.00
Tomorrow Snow Max 9-11: 
12.00
Today Snow Min 9-11: 
1.00
Tonight Snow Min 9-11: 
2.00
Tomorrow Snow Min 9-11: 
6.00
Ash Creek Bowl HS: 
58.59
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