Mammoth Mountain & Eastern Sierra Weather Forecast
- …………..……………….................…………10-11-21 @ 7:30 AM ........... ...WIND ADVISORY REMAINS IN EFFECT FROM 2 PM THIS AFTERNOON TO 8 PM PDT THIS EVENING GUSTS TO 55 MPH ON 395 LATER TODAY.......chance of Snow later today into tonight with 1-3+ inches possible above 7500 feet........Snowmaking is Off and is ready to roll at any time now....... Next accumulation storms after the 20th....... Are You Ready For Winter?......... Ski ya Later Snowman ...
Mammoth Mountain & Eastern Sierra Recreational Weather Forecast
Sunday, October 10th, 2021 @ 1:03 PM
Weather Summary: Over the next several days the weather will be dominated by a strong cut-off low dropping into the great basin. Inside sliders are typical for this time of year, this one is on the strong side and will be extra cold and offer up a bit of snow.
This pattern will drop temperatures in the Eastern Sierra that will be more winter than early Fall-like. Along with the cold, there could be 1-3 inches of fresh powdery snow that falls above the 8500-foot level. Areas below that could see a dusting to an inch of what white stuff.
The low will take its time moving east and will put us in a cold winter temperature pattern for several days this week.
If the Mountain wants to make snow it looks like there is a couple of day window to do it. Might be too early for snowmaking, but maybe not.
Checking the window cast there are clear blue skies today with great air quality.
Taking a look at local conditions the last couple of days. Yesterday at the top of Mammoth Mountain there was a high of 25, the low this morning was 20. The peak wind gust over the last 24 hours was 50 MPH @ 3:45 PM out of the ENE.
The snow study site @9000 feet is showing two inches of snow on the ground with a temperature of 52.
In Mammoth Lakes, the temperature peaked at 47 degrees on Thursday with a low of 27 degrees this morning. Winds in town have been out of the WSW with peak gusts of 11 MPH today.
Precipitation & Snowfall Forecast: Look for 1-3 inches of snowfall above 8000 feet on Monday with a slight chance of rain showers in the lower elevations. *6.5 inches new at the snow study site on Friday.*
Temperatures: Highs will be in the low 30s at the Main Lodge and in the Mammoth Lakes Basin on Monday and Tuesday. Highs warm into the mid to upper 40s by Wednesday and Thursday. With late week into the weekend in the mid-50s.
Mammoth Lakes will be in the upper 30s to low 40s on Monday and Tuesday. With low to mid-50s Wednesday and Thursday and 60s over the weekend.
Bishop will be in the 50s to start the week and then by Wednesday and Thursday high will be in the upper 60s, by the weekend it will be 70s in downtown Bishop.
*You have to love the this temperature Anomaly GIF below. After months of it showing heat and above normal it’s final gone cool. What a blessing, yahoo
Winds: On Monday expect North to North West winds 35-55 MPH in areas of the Eastern Sierra. That includes areas of 395, so travelers beware.
Fire and Smoke Forecast: Skies are expected to be clear of smoke and haze until further notice. Get out there and breathe some fresh air.
Today’s Weather Story and The 10 Day Outlook
10-10-21 @ 1:24 PM The Weather Story … check back I am adding more images right now…
Over the next 10 days the story will start cold with the deep low that is sliding into the great basin early this week.
The low will offer up a couple inches of snow on Mammoth Mountain. However the real story will be the cold air coming in. Tuesday and Wednesday will feel more like early Winter than early Fall.
This type of pattern is very cold and dry, perfect for great snowmaking. Not sure if they will make any snow since it’s really too early for that process to start.
By Friday the low is replaced with a fast moving ridge of high pressure that will be with us through Saturday. By next Sunday / Monday the next long wave trough is setting up and starting to effect us. As of now the details out at days 8-10 are unclear.
Fantasy Long Range Weather Outlook
Back in October 2004 we had on of the greatest early season starts ever. The Weatherguy sent me the Mojo images back from 2004 this week and compared them to this year at this time.
Let’s hope this years pattern delivers some decent snowfall after mid October like that seasons storms did. We all could use a decent early season base to get started this season. Turns get everyone smiling. 🙂
ECMWF Seasonal Ensemble Mean – Monthly Update from 10-1-2021
The MOJO Outlook
MJO Phase and Temperatures
MJO Phase and Precipitation
Mammoth Mountain and Eastern Sierra Weather Posts
Who Are We?
Steve Taylor – Mammoth Snowman – Over the last 30+ years, Snowman has spent countless hours studying and learning about Mammoth Mountain Weather and Snow Conditions first hand. He has been skiing around the hill with marked ski poles since March of 1991 so he can measure the fresh snowfall amounts out on the hill.
Snowman started blogging this information back in 1990 on the old Mammoth BBS system, then the RSN Forums and then on to MammothSnowman.com in 2004 with Video & Photo Blog report. (No YouTube back then). Facebook got added to the fold back in 2008 and then the Facebook Group in 2016.
Reports, videos, and photos from the website have been featured on both local TV Stations here in Mammoth, along with AP, Fox, ABC, CBS, and NBC News.