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Forecast Addendum 2/15/2023 - 07:00am

Submitted by efalconer on Wed, 02/15/2023 - 5:42am
Recent Observations: 

Yesterday morning, 4 inches of dry snow fell at 7,000 feet, with observations taken from Green Butte. Winds blowing from the northwest at moderate speeds and strong gusts transported snow onto leeward southerly slopes near and above treeline. Fresh wind drifts were found sensitive on convex terrain features near treeline and slid easily on a crust beneath the new snow. The cohesiveness of these drifts was not outstanding, averaging a four-finger density in the top 3 - 5 cm, with softer snow beneath. Nevertheless, I found drifts up to one foot thick below ridgelines and convex rollovers growing ever deeper. Visibility was poor limiting observations to near and below treeline. Over the last 24 hours winds have blown from the northeast averaging a speed of 18 mph with gusts of 50 mph. Temperatures have remained below freezing with a max temperature of 18° F. 

 

Mountain Weather: 

Today will be a cold start with mountain temperatures in the mid-teens gradually increasing to near and above-freezing levels by the afternoon. Winds will blow from the northeast at light to moderate speeds. Clear and sunny skies will make for a high-visibility day. High pressure will build overhead today, then move eastward tonight. Thursday a trough approaches the west coast from the north, staging up the next round of weather. 

Today 7-8 Weather : 
Sunny, with wind chill values low as -3. Wind gusts as high as 21 mph. Freezing level around 1,000 feet
Today 7-8 Wind Direction: 
NE
Today 8-9 Weather: 
Sunny and windy. Wind chill values as low as -27. Wind gusts as high as 70 mph
Today 8-9 Wind Direction: 
NE
Tomorrow 7-8 Weather: 
Partly sunny, wind gusts as high as 22 mph. Freezing level around 3,000 feet
Tomorrow 7-8 Wind Direction: 
S
Tomorrow 8-9 Weather: 
Partly sunny, with wind chill values as low as - 6. Wind gusts as high as 22 mph
Tomorrow 8-9 Wind Direction: 
S
Tonight 7-8 Weather: 
Mostly clear, with wind gusts as high as 20 mph. Freezing level around 4,300 feet
Tonight 7-8 Wind Direction: 
E
Tonight 8-9 Weather: 
Mostly clear, wind chill values as low as -7. Wind gusts as high as 21 mph
Tonight 8-9 Wind Direction: 
E
Today 7-8 Temp: 
32
Today 8-9 Temp: 
18
Tomorrow 7-8 Temp: 
30
Tomorrow 8-9 Temp: 
17
Tonight 7-8 Temp: 
19
Tonight 8-9 Temp: 
9
4
4
18
12
101
1
0
16
9.5
18.5
14
126.4
1
0
Grey Butte Temp Cur: 
17
Grey Butte Temp Min: 
7.5
Grey Butte Temp Max: 
17.5
Grey Butte Temp Avg: 
13
Grey Butte Wind Cur: 
15.5
Grey Butte Wind Max: 
30.5
Grey Butte Wind Gust Max: 
55.2
Grey Butte Wind Avg: 
NNE
Castle Lake Temp Cur: 
18
Castle Lake Temp Min: 
14
Castle Lake Temp Max: 
24
Castle Lake Temp Avg: 
18.5
Mount Eddy Temp Cur: 
16.5
Mount Eddy Temp Min: 
9
Mount Eddy Temp Max: 
16.5
Mount Eddy Temp Avg: 
14
Mount Eddy Wind Cur: 
3
Mount Eddy Wind Max: 
4.5
Mount Eddy Wind Gust Max: 
7.74
Mount Eddy Wind Avg: 
SE
Mount Eddy Snow Depth: 
103.9
Mount Eddy Snow New: 
0.4
Ash Creek Bowl Temp Cur: 
9.5
Ash Creek Bowl Temp Min: 
7.5
Ash Creek Bowl Temp Max: 
14.5
Ash Creek Bowl Temp Avg: 
11.5
Ash Creek Bowl Snow New: 
0.3
Ash Creek Ridge Temp Cur: 
5
Ash Creek Ridge Temp Min: 
4
Ash Creek Ridge Temp Max: 
11.5
Ash Creek Ridge Temp Avg: 
8
Ash Creek Ridge Wind Cur: 
0
Ash Creek Ridge Wind Max: 
0
Ash Creek Ridge Wind Gust Max: 
0
Mt. Shasta City Temp Cur: 
25
Mt. Shasta City Temp Min: 
23
Mt. Shasta City Temp Max: 
33
Mt. Shasta City Temp Avg: 
27.5
Mt. Shasta City Wind Cur: 
4
Mt. Shasta City Wind Min: 
0
Mt. Shasta City Wind Max: 
7
Mt. Shasta City Wind Avg: 
2.5
Ski Bowl Comments: 
water content n/a
Grey Butte Wind Min: 
7
Grey Butte Wind Avg: 
19.5
Caslte Lake Comments: 
Snow depth sensor down
Mount Eddy Wind Min: 
1
Mount Eddy Wind Avg: 
2.5
Ash Creek Ridge Wind Min: 
0
Ash Creek Ridge Wind Avg: 
0
Sand Flat Snow Settlement: 
0
Ski Bowl Snow Settlement: 
0
Mount Eddy Snow Settlement: 
0
Ash Creek Bowl Snow Settlement: 
0
Measured Precipitation Oct: 
26.9
Normal Precipitation Oct: 
20.95
Percent Precipitation Oct: 
128
Measured Precipitation MTD: 
1.02
Normal Precipitation MTD: 
2.42
Percent Precipitation MTD: 
42
Measured Precipitation YTD: 
17.77
Normal Precipitation YTD: 
8.71
Percent Precipitation YTD: 
204
Today SWE: 
0.00
Tonight SWE: 
0.00
Tomorrow SWE: 
0.00
Today Wind Max 7-9: 
15
Tonight Wind Max 7-9: 
10
Tomorrow Wind Max 7-9: 
15
Today Wind Min 7-9: 
5
Tonight Wind Min 7-9: 
0
Tomorrow Wind Min 7-9: 
5
Today Wind Max 9-11: 
25
Tonight Wind Max 9-11: 
15
Tomorrow Wind Max 9-11: 
20
Today Wind Min 9-11: 
15
Tonight Wind Min 9-11: 
5
Tomorrow Wind Min 9-11: 
10
Today Snow Max 7-9: 
0.00
Tonight Snow Max 7-9: 
0.00
Tomorrow Snow Max 7-9: 
0.00
Today Snow Min 7-9: 
0.00
Tonight Snow Min 7-9: 
0.00
Tomorrow Snow Min 7-9: 
0.00
Today Snow Max 9-11: 
0.00
Tonight Snow Max 9-11: 
0.00
Tomorrow Snow Max 9-11: 
0.00
Today Snow Min 9-11: 
0.00
Tonight Snow Min 9-11: 
0.00
Tomorrow Snow Min 9-11: 
0.00
Ash Creek Bowl HS: 
125.1
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: 
3:00 AM