El Niño is here!

Mammoth Mtn Snowfall History.

LOS ANGELES Rainfall 2023-24-From OCTOBER 1: minimum14 inches


10/20/23 Climate Update for 2023

El Niño coming  in 2023-24 after epic Wet Season 22/23. We will post unusual storm activity for West Coast.

Another wet winter in California . El Ninoi s back.

A warm, wet El Niño winter is in store for California and much of the U.S. LA Times.

The first winter outlook from the National Oceanic and Atmospheric Administration predicts that a strong El Niño will remain in place through at least the spring, with further strengthening possible over the next couple of months. 

El Niño is the warm phase of the El Niño-La Niña Southern Oscillation pattern — sometimes referred to as ENSO — and is a major driver of temperature and precipitation patterns across the globe. 

“The anticipated strong El Niño is the predominant climate factor driving the U.S. winter outlook this year,” said Jon Gottschalck, chief of the operational prediction branch at NOAA’s Climate Prediction Center.



1/4/23 Update from Mammoth Snowman

158 inches at McCoy, 176 inches  up top

Tonight into Thursday the colder portion of the storm arrives with what looks like a “Riders of the Storm Day” for Thursday. Winds will be moderate the mountain should be able to run some lifts to get you to the goods.

Use this link to get our full Mammoth Mountain Weather Discussion.

Mammoth Snow Conditions: Expect packed powder to turn over to fresh powder as the morning goes on with fresh snow falling out on the hill during the morning hours. With the wind and snow once again we can expect the upper and mid-mountain to be on wind hold at times.

Get the full Mammoth Mountain Locals Snow Report at this link.

Roads: Chains or snow tires are required in Mammoth Lakes and up to all the ski lodges. 395 is open and clear this morning. Please note, with the storminess forecast for the next 6 of 7 days, you need to be prepared for winter driving conditions from the top of the Sherwin Grade up to Mammoth Lakes.

While cal trans is understaffed, the crew they have has been doing an amazing job on highways 395 and 203. Just take it slow and chain up if you don’t have snow tires or AWD / 4 x 4. PS:

>>> Remove the Snow from your Car Please… You can get a ticket for leaving snow on the roof of your car, it’s a hazard when it flies off. The heavy sierra cement snow can break out car windows behind you when it shed off. We saw CHP pulling people over and making them shovel it off on the side of the road the other day.




1/3/23 Update

Big California storms of early January 2023:How atmospheric rivers and a bomb cyclone add up to mayhem for California
The atmospheric rivers set to arrive in California are being fed in part by a storm system sitting several hundred miles off the northern Pacific coast.

Read in Los Angeles Times: https://apple.news/Ak4xisYmISQqfD3G9JhB42A



First Big Pacific Storm 

The first big Pacific Storm of 2022-23 has arrived and here are some updates and links. Updates coming late PM on 11/7.

Track the storm and areas of major PPT on this NOAA site.Looks like more storms to follow,

Howard Sheckter of Mammoth Weather says heavy snow with blizzard conditions by Tuesday with 4-5 ft of accumulation.

After Opening Day at Mammoth snow has arrived with about 8-10 in and snow expected all week.

Here is Accuweather for San Francisco.with heaviest rain for Tuesday and Wednesday.

Longer term outlook shows above average ppt for NW US to NorCal. LaNina through FEB 2023.



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