Mammoth Mountain ↑35° ↓23° Forecast:   0" Base:   10"
All Maps
{STATION_DATA_VAR}
Today's Forecast
↑35° ↓23°
forecast icon
  • Dewpoint↓-4° / ↑3°
  • Humidity↓10% / ↑23%
  • Regional Forecasted Snow0"
  • Regional Snow Depth10"
Mostly clear with a few clouds before noon and then partly cloudy becoming mostly cloudy later into the evening.
No snow.
No precipitation expected throughout the day.
Winds variable at 2 to 9 mph through the morning becoming W 9 to 20 mph in the afternoon, evening with gusts up to 24 mph. Wind chill expected to be 14 to 25 degrees throughout the day.
Daily Freezing Level In Feet
Wednesday the 12th
↑36° ↓21°
forecast icon
  • Dewpoint↓7° / ↑0°
  • Humidity↓15% / ↑55%
  • Regional Forecasted Snow0"
  • Regional Snow Depth8"
Mostly cloudy through the morning, and then partly cloudy through the afternoon and evening.
No snow.
No precipitation expected throughout the day.
Winds E 8 to 17 mph through the morning becoming variable at 3 to 10 mph in the afternoon, evening with gusts up to 21 mph. Expected wind chill to be 8 to 26 degrees throughout the day.
Daily Freezing Level In Feet
Thursday the 13th
↑38° ↓26°
forecast icon
  • Dewpoint↓6° / ↑3°
  • Humidity↓17% / ↑52%
  • Regional Forecasted Snow0"
  • Regional Snow Depth7"
Mostly clear with a few clouds becoming partly cloudy through the morning, and then mostly clear with a few clouds through the afternoon and evening.
No snow.
None expected throughout the day.
Winds SW 5 to 14 mph through the morning becoming SW 15 to 27 mph in the afternoon, evening with gusts up to 34 mph. Wind chill expected to be 18 to 23 degrees throughout the day.
Daily Freezing Level In Feet
Friday the 14th
↑35° ↓21°
forecast icon
  • Dewpoint↓3° / ↑5°
  • Humidity↓28% / ↑58%
  • Regional Forecasted Snow0"
  • Regional Snow Depth5"
Partly cloudy becoming cloudy through the morning, and then mostly cloudy becoming partly cloudy into the evening.
No snow.
No precipitation expected throughout the day.
Winds SW 18 to 30 mph through the morning becoming SW 12 to 23 mph in the afternoon, evening with gusts up to 52 mph. Expected wind chill to be 3 to 18 degrees throughout the day.
Daily Freezing Level In Feet
Saturday the 15th
↑36° ↓24°
forecast icon
  • Dewpoint↓8° / ↑3°
  • Humidity↓29% / ↑51%
  • Regional Forecasted Snow0"
  • Regional Snow Depth4"
Clear becoming partly cloudy through the morning, and then partly cloudy becoming mostly cloudy into the evening.
No snow throughout the day.
None expected throughout the day.
Winds SW 9 to 20 mph through the morning shifting to SW 11 to 22 mph in the afternoon, evening with gusts up to 25 mph. Expected wind chill to be 11 to 20 degrees throughout the day.
Daily Freezing Level In Feet
Sunday the 16th
↑34° ↓23°
forecast icon
  • Dewpoint↓18° / ↑4°
  • Humidity↓33% / ↑83%
  • Regional Forecasted Snow1"
  • Regional Snow Depth4"
Mostly cloudy throughout the day. Chance of snow in the evening.
Snowfall expected to be a dusting in the afternoon.
Potential Precip: 0.02 to 0.1 inches
Winds S 13 to 25 mph through the morning becoming S 11 to 22 mph in the afternoon, evening with gusts up to 31 mph. Expected wind chill to be 5 to 14 degrees throughout the day.
Daily Freezing Level In Feet
  • Last Update11 Dec @ 06:12
  • Snow Past 24 hrs0"
  • Snow Past 48 hrs0"
  • Season Total67"
  • Average Base Depth40 to 60"
  • Today's Snow Potential0"
Comments
5 - 6in, past 6 days. Snow surface is packed powder and machine groomed
  • High Lift Elevation11053
  • Base Elevation7953
  • Vertical Drop3,100ft
  • Longest TrailUnknown
  • Trails149 of 150
  • Lifts28 of 28
  • Acreage2783 of 3500 ( 99% )
Other Info
  • Groomed Night Ski Trails75 ( 49% )
  • Trails with Snow Making1 ( 1% )
  • Cross Country Area18
  • Tubingyes
  • Tubing Hours10a-5p
25°
Current Weather Icon
 
Conditions
  • Humidity70%
  • Dewpoint17°
  • Sustained 0mph
  • Gusting 1mph
  • VisibilityUnreported
  • Snow DepthUnreported
Comments
Unreported
Location
CRESTVIEW, CA
  • Elevation9,088ft
  • UpdatedDec 11 @ 05:08
25°
Current Weather Icon
 
Conditions
  • Humidity70%
  • Dewpoint17°
  • Sustained 0mph
  • Gusting 1mph
  • VisibilityUnreported
  • Snow DepthUnreported
Comments
Unreported
Location
CRESTVIEW, CA
  • Elevation9,088ft
  • UpdatedDec 11 @ 05:08
Top
Base
Super pipe
Super pipe
McCoy-Chair 23-top
McCoy-Chair 23-top
Contact
Location
  • City: Mammoth
  • State: California
  • Country: United States
Tahoe - Mammoth - April 04, 2018
Wednesday, April 4th, 2018

..NOW THROUGH THE WEEKEND...
Mild weather is expected through Thursday. A few light showers are possible today and Thursday, mainly well north of Interstate 80. A strong atmospheric river will impact northeast California and western Nevada Friday into Saturday, bringing periods of moderate to heavy rain, high elevation snow, gusty winds, and concerns for flooding along rivers and streams.

..MORE DETAIL...
(Translated from NWS but added in some detail and our own outlook)
A strong late season Atmospheric River (AR) will bring periods of heavy precipitation to the region Friday and Saturday. With a strong sub-tropical influence and the jet stream (cold air to the north of this) forecast to stay well north of the region during most of precipitation event. Precip will fall
primarily as rain, even in the higher elevations above 9,000 and 10,000 feet. The main concern continues to be flooding, both for small creeks and streams, and for main stem rivers. There is a flood watch in effect from late Friday afternoon through Saturday for the Sierra and the Sierra foothills.

It is late in the atmospheric river season and this AR is forecast to be solidly in the strong category, which is quite rare for this time of year. PWAT (moisture) and IVT (moisture + transport) anomalies are on the very high end of their respective scales for this time of year, and between Friday afternoon and Saturday morning, several inches of water or more will fall on thew west slopes of the Sierra Nevada.

Precipitation will begin to move into the Sierra and NE California by Thursday night with periods of light to moderate precipitation through Friday afternoon as warm advection precipitation begins to push into the Sierra. A 6-12 hour period of very heavy precipitation is expected Friday night into Saturday morning as the core of the low pressure nears the Pacific Northwest coast, bringing increased forcing to the moisture laden
environment over the Sierra. The very warm temperatures aloft will promote more efficient warm rain processes and will likely result in impressive rain rates Friday night (heavy rain and flooding likely).

Current forecast for QPF is up to around 3-4 inches along the Sierra crest with 1.5-2 inches along the immediate lee of the Sierra and 0.5-1.0 inch spilling into western Nevada. During the period of heaviest precipitation the jet stream and the cold core of the low is forecast to remain well north of the
Sierra. Very warm subtropical air is forecast to move into the area from the southwest with mid-level temperatures potentially rising to around +3C to +5C during the heaviest precipitation. This will likely push snow levels to 10,000+ to 11,000 feet later Friday through early Saturday. CM

NEXT WEEK...
Early through mid next week looks busy with storms, colder this time, with snow levels to resort bases... Moderate to heavy snow is expected Tuesday and again next Thursday (9th/ 11th), followed by some sunshine and warming. After the 15th/ 16th or so we see high pressure build in across the eastern Pacific and west US coast, with sunny skies and warming temperatures, quite spring-like. CM
Feel free to share this, but please cite credit to snowforecast.com. Thank you! CM

Snowforecast.com Copyright © 1998–2018. Unauthorized Use Prohibited.
December 07, 2018 - Aspen and Western Colorado Short/ Long Range Outlook
Mostly light additional snow, then a mostly sunny weekend, and  more snow next Tuesday and Wednesday (heavier)!

HOW ARE WE DOING (please contact chris@snowforecast.com or comment below)? Let us know please...

Light snow for most areas including Aspen, and  across southwest Colorado...

-The latest storm absolutely dumped RAIN and snow across southern California, is headed mainly along the Mexico border now, and taking a southern track... El Nino style, with a few" of snow across southwest Colorado to Aspen's mountains, under a moist southwest flow of moisture across the mountains, while most energy passes to the south

This coming weekend we expect a high pressure ridge to build in, with cooler air dragged into Colorado initially on Saturday, as the southern tracking low pressure system exits (northwest/ north flow of winds from the colder north), and sunshine pops through in the then drier air... Powder + sunshine, what Colorado is known for!

LONGER RANGE:
It looks like El Nino is not an official anomaly yet, as I expected in my September LR forecast (for Aspen and SW Colorado / For northern Colorado resorts) so we are in an ENSO Neutral phase, though in the latest update from NOAA, we are seeing warming waters, still a weak El Nino at best. This may explain the more southerly tracking storm systems we have seen, and will likely see in the coming weeks of December and January. CM

Next week, the 11th onward, we expect a couple of snow storms and some moderate to significant snow for western Colorado. Because these look like strong and cold systems (ask Niseko, Japan) with a good fetch of moisture across the Pacific, they are capable of good snowfall across all of western Colorado if the track is right (a bit more north). It looks like 2 storms total for next week, one Tuesday/ Wednesday and another late next week. CM

(NO CHANGE from the last LR update) : It is looking like we may see a busy time as we approach the Christmas and New Year holiday period, with some significant storms possibly lining up to affect all of the western US including Colorado... We expect to see a 7-14 day period of down time and mostly sunny skies following this series of storms, that may start around/ after Christmas. In January we see that down time to start the month (a week-ish), then storms should kick in again on a more regular basis, but possibly favoring northern resorts this time as the east coast gets hit hard and these systems brush mainly northern Colorado. More updates are coming. Do you have any ideas on what you want to see in our discussions? Please contact through the site! We do not charge for any of our info, and have been providing it all for free since 1998, "Predicting Sick Days since 1998"! CM

Mountain Summit Forecast

Tuesday
↑35° / ↓25°
iconWinds: variable 2 to 9 mph, then W 9 to 20 mph
iconForecast Snow: 0"
icon

AM

icon
↑34° / ↓29°
Sky
Mostly clear with a few clouds through the morning.
Snow
No snow.
Precipitation
None expected through the morning.
Winds
Morning winds near the top variable at 2 to 9 mph. Wind chill expected to be 19 to 25 degrees through the morning.

PM

icon
↑31° / ↓28°
Sky
Partly cloudy becoming mostly cloudy through the afternoon and evening.
Snow
None expected.
Precipitation
No precipitation expected through the afternoon and evening.
Winds
Afternoon winds near the top W 9 to 20 mph with gusts up to 24 mph. Expected wind chill to be 21 to 27 degrees into the evening.
Hourly Temperatures at 9,519ft
temperature graph
Wednesday
↑37° / ↓25°
iconWinds: E 8 to 17 mph, then variable 3 to 10 mph
iconForecast Snow: 0"
icon

AM

icon
↑37° / ↓31°
Sky
Mostly cloudy through the morning.
Snow
No snow through the morning.
Precipitation
No precipitation expected through the morning.
Winds
Morning winds near the top E 8 to 17 mph with gusts up to 21 mph. Wind chill expected to be 19 to 21 degrees through the morning.

PM

icon
↑31° / ↓26°
Sky
Partly cloudy into the evening.
Snow
None expected through the afternoon and evening.
Precipitation
No precipitation expected through the afternoon and evening.
Winds
Afternoon winds near the top variable at 3 to 10 mph. Expected wind chill to be 20 to 30 degrees into the evening.
Hourly Temperatures at 9,519ft
temperature graph
Thursday
↑38° / ↓26°
iconWinds: SW 5 to 14 mph, then SW 15 to 27 mph
iconForecast Snow: 0"
icon

AM

icon
↑38° / ↓30°
Sky
Mostly clear with a few clouds becoming partly cloudy through the morning.
Snow
None expected.
Precipitation
No precipitation expected in the morning hours.
Winds
Morning winds near the top SW 5 to 14 mph with gusts up to 18 mph. Wind chill expected to be 22 to 25 degrees through the morning.

PM

icon
↑31° / ↓27°
Sky
Mostly clear with a few clouds through the afternoon and evening.
Snow
None expected.
Precipitation
None expected.
Winds
Afternoon winds near the top SW 15 to 27 mph with gusts up to 28 mph. Expected wind chill to be 18 to 24 degrees into the evening.
Hourly Temperatures at 9,519ft
temperature graph
Friday
↑35° / ↓20°
iconWinds: SW 18 to 30 mph, then SW 12 to 23 mph
iconForecast Snow: 0"
icon

AM

icon
↑35° / ↓25°
Sky
Partly cloudy becoming overcast before noon.
Snow
None expected.
Precipitation
None expected through the morning.
Winds
Morning winds near the top SW 18 to 30 mph with gusts up to 52 mph. Wind chill expected to be 6 to 17 degrees through the morning.

PM

icon
↑27° / ↓21°
Sky
Mostly cloudy becoming partly cloudy into the evening.
Snow
None expected through the afternoon and evening.
Precipitation
None expected.
Winds
Afternoon winds near the top SW 12 to 23 mph with gusts up to 26 mph. Expected wind chill to be 2 to 9 degrees into the evening.
Hourly Temperatures at 9,519ft
temperature graph
Saturday
↑35° / ↓24°
iconWinds: SW 9 to 20 mph, then SW 11 to 22 mph
iconForecast Snow: 0"
icon

AM

icon
↑35° / ↓26°
Sky
Clear becoming partly cloudy before noon.
Snow
No snow in the morning hours.
Precipitation
No precipitation expected through the morning.
Winds
Morning winds near the top SW 9 to 20 mph with gusts up to 25 mph. Expected wind chill to be 11 to 19 degrees through the morning.

PM

icon
↑31° / ↓26°
Sky
Partly cloudy becoming mostly cloudy into the evening.
Snow
None expected.
Precipitation
No precipitation expected.
Winds
Afternoon winds near the top SW 11 to 22 mph with gusts up to 28 mph. Wind chill expected to be 15 to 19 degrees into the evening.
Hourly Temperatures at 9,519ft
temperature graph
Sunday
↑33° / ↓21°
iconWinds: S 13 to 25 mph, then S 11 to 22 mph
iconForecast Snow: 1"
icon

AM

icon
↑33° / ↓25°
Sky
Mostly cloudy through the morning.
Snow
No snow in the morning hours.
Precipitation
Potential Precip: trace amount
Winds
Morning winds near the top S 13 to 25 mph with gusts up to 31 mph. Expected wind chill to be 5 to 11 degrees through the morning.

PM

icon
↑28° / ↓21°
Sky
Mostly cloudy into the evening. Chance of snow in the evening.
Snow
Snowfall expected to be a dusting in the afternoon.
Precipitation
Potential Precip: 0.02 to 0.1 inches
Winds
Afternoon winds near the top S 11 to 22 mph with gusts up to 28 mph. Expected wind chill to be 1 to 6 degrees into the evening.
Hourly Temperatures at 9,519ft
temperature graph

Mountain Base Forecast

Tuesday
↑35° / ↓21°
iconWinds: variable 2 to 9 mph, then W 9 to 20 mph
iconForecast Snow: 0"
icon

AM

icon
↑34° / ↓26°
Sky
Mostly clear with a few clouds through the morning.
Snow
None expected through the morning.
Precipitation
None expected through the morning.
Winds
Morning winds around the base variable at 2 to 9 mph. Wind chill expected to be 10 to 24 degrees through the morning.

PM

icon
↑32° / ↓28°
Sky
Partly cloudy becoming mostly cloudy through the afternoon and evening.
Snow
No snow.
Precipitation
None expected.
Winds
Afternoon winds around the base W 9 to 20 mph with gusts up to 24 mph. Wind chill expected to be 20 to 28 degrees into the evening.
Hourly Temperatures at 8,166ft
temperature graph
Wednesday
↑37° / ↓22°
iconWinds: E 8 to 17 mph, then variable 3 to 10 mph
iconForecast Snow: 0"
icon

AM

icon
↑37° / ↓29°
Sky
Mostly cloudy through the morning.
Snow
No snow.
Precipitation
No precipitation expected through the morning.
Winds
Morning winds around the base E 8 to 17 mph with gusts up to 21 mph. Expected wind chill to be 17 to 20 degrees through the morning.

PM

icon
↑28° / ↓22°
Sky
Partly cloudy into the evening.
Snow
None expected.
Precipitation
No precipitation expected through the afternoon and evening.
Winds
Afternoon winds around the base variable at 3 to 10 mph. Expected wind chill to be 13 to 23 degrees into the evening.
Hourly Temperatures at 8,166ft
temperature graph
Thursday
↑40° / ↓25°
iconWinds: SW 5 to 14 mph, then SW 15 to 27 mph
iconForecast Snow: 0"
icon

AM

icon
↑40° / ↓29°
Sky
Mostly clear with a few clouds becoming partly cloudy through the morning.
Snow
None expected in the morning hours.
Precipitation
None expected.
Winds
Morning winds around the base SW 5 to 14 mph with gusts up to 18 mph. Wind chill expected to be 20 to 28 degrees through the morning.

PM

icon
↑33° / ↓27°
Sky
Mostly clear with a few clouds into the evening.
Snow
No snow through the afternoon and evening.
Precipitation
No precipitation expected.
Winds
Afternoon winds around the base SW 15 to 27 mph with gusts up to 28 mph. Wind chill expected to be 17 to 29 degrees into the evening.
Hourly Temperatures at 8,166ft
temperature graph
Friday
↑36° / ↓20°
iconWinds: SW 18 to 30 mph, then SW 12 to 23 mph
iconForecast Snow: 0"
icon

AM

icon
↑36° / ↓26°
Sky
Partly cloudy becoming overcast before noon.
Snow
No snow.
Precipitation
No precipitation expected.
Winds
Morning winds around the base SW 18 to 30 mph with gusts up to 52 mph. Expected wind chill to be 11 to 18 degrees through the morning.

PM

icon
↑32° / ↓21°
Sky
Mostly cloudy becoming partly cloudy through the afternoon and evening.
Snow
None expected through the afternoon and evening.
Precipitation
No precipitation expected.
Winds
Afternoon winds around the base SW 12 to 23 mph with gusts up to 26 mph. Expected wind chill to be 2 to 18 degrees into the evening.
Hourly Temperatures at 8,166ft
temperature graph
Saturday
↑38° / ↓23°
iconWinds: SW 9 to 20 mph, then SW 11 to 22 mph
iconForecast Snow: 0"
icon

AM

icon
↑38° / ↓25°
Sky
Clear becoming partly cloudy through the morning.
Snow
No snow through the morning.
Precipitation
No precipitation expected through the morning.
Winds
Morning winds around the base SW 9 to 20 mph with gusts up to 25 mph. Expected wind chill to be 7 to 25 degrees through the morning.

PM

icon
↑34° / ↓26°
Sky
Partly cloudy becoming mostly cloudy through the afternoon and evening.
Snow
None expected through the afternoon and evening.
Precipitation
No precipitation expected.
Winds
Afternoon winds around the base SW 11 to 22 mph with gusts up to 28 mph. Wind chill expected to be 14 to 26 degrees into the evening.
Hourly Temperatures at 8,166ft
temperature graph
Sunday
↑36° / ↓24°
iconWinds: S 13 to 25 mph, then S 11 to 22 mph
iconForecast Snow: 1"
icon

AM

icon
↑36° / ↓26°
Sky
Mostly cloudy before noon.
Snow
No snow in the morning hours.
Precipitation
Potential Precip: trace amount
Winds
Morning winds around the base S 13 to 25 mph with gusts up to 31 mph. Expected wind chill to be 9 to 17 degrees through the morning.

PM

icon
↑31° / ↓24°
Sky
Mostly cloudy through the afternoon and evening. Chance of snow in the evening.
Snow
Snowfall expected to be a trace amount in the afternoon.
Precipitation
Potential Precip: 0.02 to 0.1 inches
Winds
Afternoon winds around the base S 11 to 22 mph with gusts up to 28 mph. Wind chill expected to be 7 to 14 degrees into the evening.
Hourly Temperatures at 8,166ft
temperature graph

Snow Maker's Corner

Regional Soil Temperatures
  • Soil High Temperature28°
  • Soil Low Temperature20°
Summit Wet Bulb Temperatures (F)
chart
Base Wet Bulb Temperatures (F)
chart
Regional Soil Temperatures
  • Soil High Temperature30°
  • Soil Low Temperature24°
Summit Wet Bulb Temperatures (F)
chart
Base Wet Bulb Temperatures (F)
chart
Regional Soil Temperatures
  • Soil High Temperature30°
  • Soil Low Temperature23°
Summit Wet Bulb Temperatures (F)
chart
Base Wet Bulb Temperatures (F)
chart
Regional Soil Temperatures
  • Soil High Temperature31°
  • Soil Low Temperature26°
Summit Wet Bulb Temperatures (F)
chart
Base Wet Bulb Temperatures (F)
chart
Regional Soil Temperatures
  • Soil High Temperature31°
  • Soil Low Temperature25°
Summit Wet Bulb Temperatures (F)
chart
Base Wet Bulb Temperatures (F)
chart