Submitted by sclairmont on Sun, 01/29/2023 - 5:00am
Recent Observations:
The California Cooperative Snow Surveys (CCSS) have begun for the Shasta-Trinity National Forest. The CCSS program provides mountain snowpack data and stream flow forecasts for the western United States. It is a partnership of more than 50 state, federal and private agencies. The agencies share a pool of expert staff and program funding, which collects, analyzes and disseminates snow data from more than 265 snow courses and 130 snow sensors located throughout the Sierra Nevada and Shasta-Trinity mountains. Common applications of snow survey products include water supply management, flood control, climate modeling, recreation and conservation planning. The past two days, Forest Service personnel have completed the Deadfall (Trinity drainage) and Gray Rocks (Sacramento drainage).
Over the last 24 hours, sunny and clear weather continued with no precipitation in the region. Temperatures have begun to drop and winds have picked up with the cold front arriving. Observations from Gray Rocks yesterday showed similar trends that have been seen for the last few days. Very firm surface conditions can be found on all aspects and elevations. New small and shallow wind slabs and drifts were found on southerly facing slopes, though unreactive to trigger. In cold and shaded areas, sugary snow (near surface facets) is becoming more prevalent.
Photo: Variable conditions on the skin track heading up to Gray Rocks. Soft sugary snow followed by hard wind slab.
Mountain Weather:
A cold front arrived last night, bringing arctic air to the Mount Shasta region. No significant accumulation is expected, however this front did bring very cold temperatures. Below treeline, winds will remain moderate, gusting to strong (>26 mph). Near and above treeline, winds will quickly increase to strong, gusting to extreme (>38 mph). On the upper reaches of the mountain, winds are expected to be gale force and very cold. Climbers, expect wind chill values of -20 F and lower. This weather will continue, with the coldest conditions expected tonight into tomorrow morning. Temperatures will slowly warm after Monday, with high pressure remaining through most of the week.
This image shows the jet stream passing directly above the Mount Shasta area.
Today 7-8 Weather :
Partly sunny. A slight chance of snow before 10 am. Windy, with gusts up to 34 mph.
Today 7-8 Wind Direction:
NE
Today 8-9 Weather:
Partly sunny. Slight chance of snow before 10 am. Wind chill value as low as -24. Windy, with gusts up to 55 mph.
Today 8-9 Wind Direction:
NE
Tomorrow 7-8 Weather:
Sunny. Wind chill as low as -8. Gusts up to 20 mph.
Tomorrow 7-8 Wind Direction:
NE
Tomorrow 8-9 Weather:
Sunny. Wind chill values as low as -22. Windy, with gusts up to 45 mph.
Tomorrow 8-9 Wind Direction:
NE
Tonight 7-8 Weather:
Clear. Wind chill around -9. Windy, with gusts up to 20 mph.
Tonight 7-8 Wind Direction:
NE
Tonight 8-9 Weather:
Clear. Wind chill value as low as -30. Windy, gusts up to 60 mph.
Tonight 8-9 Wind Direction:
NE
20
18
36
26
101
0
0
19
19
23
21.5
145
0
0
Grey Butte Temp Cur:
15.5
Grey Butte Temp Min:
15.5
Grey Butte Temp Max:
36.5
Grey Butte Temp Avg:
27.5
Grey Butte Wind Max:
17.5
Grey Butte Wind Gust Max:
36.8
Castle Lake Temp Avg:
28.5
Mount Eddy Temp Avg:
28.5
Mount Eddy Wind Gust Max:
5.49
Mount Eddy Snow Depth:
102.1
Ash Creek Bowl Temp Cur:
18
Ash Creek Bowl Temp Min:
17.5
Ash Creek Bowl Temp Max:
30.5
Ash Creek Bowl Temp Avg:
23.5
Ash Creek Bowl Snow New:
0
Ash Creek Ridge Temp Cur:
14.5
Ash Creek Ridge Temp Min:
14.5
Ash Creek Ridge Temp Max:
28
Ash Creek Ridge Temp Avg:
21.5
Ash Creek Ridge Wind Cur:
2.5
Ash Creek Ridge Wind Max:
19.5
Ash Creek Ridge Wind Gust Max:
25.24
Ash Creek Ridge Wind Avg:
SSW
Mt. Shasta City Temp Cur:
32
Mt. Shasta City Temp Min:
28
Mt. Shasta City Temp Max:
47
Mt. Shasta City Temp Avg:
36
Mt. Shasta City Wind Cur:
0
Mt. Shasta City Wind Min:
0
Mt. Shasta City Wind Max:
9
Mt. Shasta City Wind Avg:
2.5
Ash Creek Ridge Wind Min:
2.5
Ash Creek Ridge Wind Avg:
13.5
Sand Flat Snow Settlement:
1
Ski Bowl Snow Settlement:
1
Mount Eddy Snow Settlement:
1.2
Ash Creek Bowl Snow Settlement:
57
Measured Precipitation Oct:
25.88
Normal Precipitation Oct:
17.9
Percent Precipitation Oct:
145
Measured Precipitation MTD:
16.75
Normal Precipitation MTD:
5.66
Percent Precipitation MTD:
296
Measured Precipitation YTD:
16.75
Normal Precipitation YTD:
5.66
Percent Precipitation YTD:
296
Tomorrow Wind Max 7-9:
15
Tonight Wind Max 9-11:
35
Tomorrow Wind Max 9-11:
30
Tonight Wind Min 9-11:
25
Tomorrow Wind Min 9-11:
20
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:
Low
