Submitted by casey.glaubman@... on Thu, 03/16/2023 - 4:29am
Recent Observations:
Yesterday we went up to take a look at how all the recent rain and subsequent snow had affected things up at Castle Lake. Large rain runnels were visible everywhere, up to about 6,500 feet or so. During the rain on Sunday and Monday, wet loose slides were released on most of the north-facing aspects we observed. About 6-8 inches of new snow was lying on top of the avalanche debris, from the colder-than expected temperatures on Tuesday and Tuesday night.
Across all aspects we found a dense, 6 cm thick ice layer about 33 cm below the surface. The new snow that fell on top was separated by an almost imperceptible layer 23 cm down. This is likely the new snow interchange from what fell during the day on Tuesday and what fell later that night, as things got colder. Tests on the new snow revealed the weak layer in isolation, but observers were unable to cause any reaction on test slopes throughout the day, despite significant efforts to do so.
Mountain Weather:
Today we're looking at sunny, clear skies throughout our forecast zone. Light, single-digit speed winds will accompany a couple days of high pressure. On Saturday we should see a displacement of the high-pressure system with some weather coming in on Saturday night. Sunday will see snow levels dropping to 3,000-3,500 feet, as a bit more snow is on the horizon. We're only forecasted to see about .5-4 inches through Monday, but then a stronger plume of moisture is expected to move our direction by Tuesday. The winds are also expected to shift to coming out of the south then which, as we've seen this winter, should increase our snowfall. We're looking at something in the range of 4-10 inches of snow on Tuesday, though obviously this can change between now and then.
Today 7-8 Weather :
Sunny
Today 7-8 Wind Direction:
E
Today 8-9 Weather:
Sunny. Wind chill values as low as -8
Today 8-9 Wind Direction:
ESE
Tomorrow 7-8 Weather:
Mostly sunny
Tomorrow 7-8 Wind Direction:
E
Tomorrow 8-9 Weather:
Mostly sunny. Wind chill values as low as -3
Tomorrow 8-9 Wind Direction:
SW
Tonight 7-8 Weather:
Clear
Tonight 7-8 Wind Direction:
E
Tonight 8-9 Weather:
Clear. Wind chill values as low as -7
Tonight 8-9 Wind Direction:
SSW
13
13
36
23
157
0
0
24.5
11.5
39.5
25
199
0
0.11
Grey Butte Temp Cur:
25.5
Grey Butte Wind Cur:
22.5
Grey Butte Wind Gust Max:
49.07
Castle Lake Temp Cur:
-38
Castle Lake Temp Min:
-38
Castle Lake Temp Max:
-36
Castle Lake Temp Avg:
-37.5
Mount Eddy Temp Cur:
18.5
Mount Eddy Temp Max:
31.5
Mount Eddy Wind Gust Max:
6.52
Mount Eddy Snow Depth:
159.5
Ash Creek Bowl Temp Cur:
12.5
Ash Creek Bowl Temp Min:
10
Ash Creek Bowl Temp Max:
34.5
Ash Creek Bowl Temp Avg:
17.5
Ash Creek Bowl Snow New:
0
Ash Creek Ridge Temp Cur:
14
Ash Creek Ridge Temp Min:
9
Ash Creek Ridge Temp Max:
22
Ash Creek Ridge Temp Avg:
15
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:
22
Mt. Shasta City Temp Min:
22
Mt. Shasta City Temp Max:
40
Mt. Shasta City Temp Avg:
32
Mt. Shasta City Wind Cur:
0
Mt. Shasta City Wind Min:
0
Mt. Shasta City Wind Max:
7
Mt. Shasta City Wind Avg:
2
Mt. Shasta City Wind Avg:
N
Grey Butte Wind Avg:
10.5
Ash Creek Ridge Wind Min:
0
Ash Creek Ridge Wind Avg:
0
Sand Flat Snow Settlement:
4
Ski Bowl Snow Settlement:
5.1
Mount Eddy Snow Settlement:
5
Ash Creek Bowl Snow Settlement:
0
Measured Precipitation Oct:
36.5
Normal Precipitation Oct:
28
Percent Precipitation Oct:
130
Measured Precipitation MTD:
6.79
Normal Precipitation MTD:
3.06
Percent Precipitation MTD:
222
Measured Precipitation YTD:
27.37
Normal Precipitation YTD:
15.76
Percent Precipitation YTD:
174
Tomorrow Wind Max 7-9:
10
Tonight Wind Max 9-11:
20
Tomorrow Wind Max 9-11:
15
Tonight Wind Min 9-11:
10
Tomorrow Wind Min 9-11:
5
Tonight Snow Max 7-9:
0.00
Tomorrow Snow Max 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
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
