Mammoth Mountain & Eastern Sierra Recreational Weather

Friday, June 21st, 2024 @ 8 AM – Good morning. You will find clear blue skies up here with just a bit of haze off towards the Glass and White Mountain areas. There were some buildups on Thursday, with just a few isolated areas getting a few scattered raindrops. Nothing was recorded rainfall-wise in the Mammoth area.

Up at the top of Mammoth Mountain, the temperature is 45, with an NW wind at 25 MPH and gusting to 28 MPH, with the relative humidity at 37%. Down at Main Lodge, the temperature is 58, with a light East wind of 1 to 7 MPH.

Here is what you can expect in the High Country into next Tuesday: Mid-day temperatures at the 9000-foot level (Main Lodge / Lake Mary) will be in the mid-70s throughout the period. Overnight lows in the high country will be comfortable in the upper 40s to lower 50s.

Winds on Mammoth Mountain and over the higher elevations will be NW to East today and then turn back to the SW at 5-15 MPH tonight, with gusts up to 20-25 MPH during the afternoon hours through the upcoming weekend.

Temperatures in Mammoth Lakes will be in the upper 70s to lower 80s, with nighttime lows in the mid-50s. Today, winds will be out of the East at 5 – 10 MPH, and then tonight, they will change back to the SW at 5-10 MPH, with gusts to 20 MPH at times.

Midday temperatures from Crowley Lake to Toms Place today will be in the mid-80s and then into the mid-to-upper 80s into next Tuesday, with overnight lows in the low 50s.

For Bishop to Mill Pond, Summer is on, with mid-afternoon temperatures expected to be in the upper 90s to lower 100s until next Tuesday, and overnight lows will be in the mid-50s. Expect afternoon winds of 5-10 MPH, with gusts up to 15 MPH possible.

Snowman
NWS Main Lodge Forecast - Mammoth Mountain Weather Image
NWS Main Lodge Forecast – Mammoth Mountain Weather Image
Satellite View of the Eastern Pacific and California
Satellite View of the Eastern Pacific and California

Mammoth / Eastern Sierra Weather Story: This morning, a weakening cut-off low is sitting over southern and central California. That low will be replaced by the next ridge of high pressure, which will bring warming temperatures to Mammoth and the Eastern Sierra Region.

This is a dry pattern with the afternoon and evening thunderstorms out of the picture for the next 3-5 days. I would expect a few clouds to build up as the heat builds up over the next few days. Higher heights will be in the area with warm days for Mammoth and Hot days for Bishop right into about next Thursday.

After that, the next trough starts to make its way toward our area. That trough will be in and out of the area in a couple of days, according to the ECM ENSEMBLE MODEL.

The 45-Day ECM model has the 4-corner’s high setting up around July 1st for the start of the Dog Days of Summer and a prolonged period of warm weather. 

Mammoth Weather Story Image for June 21st, 2024
Mammoth Weather Story Image for June 21st, 2024

MSLP GIF out 7 Days – Clear and dry weather will turn hot and dry by the weekend. The only chance for thunderstorms looks to be early to mid-next week, but nothing much is showing up yet.

(MSLP) is the atmospheric pressure at the mean sea level. It is usually shown on radio, television, newspapers, or Internet weather reports.

MLSP 7 Day Forecast - Mammoth Mountain Weather GIF
MLSP 7-Day Forecast – Mammoth Mountain Weather GIF

15-Day ECM 500mb Anomaly GIF: This is the full 15-day run of the ECMWF Ensemble model. I find this solution is right more often than not compared to the other models.

I’ve been using the Euro version since Howard (Dweeb Report) taught me this was the model to look at back in the early 90s. Until about a year ago, you had to pay to get access to the ECMWF.

ECMWF 500mb Height Anomaly - Mammoth Mountain Weather GIF
ECMWF 500mb Height Anomaly – Mammoth Mountain Weather GIF

Temperature Anomaly GIF: Over the next ten days, the area will warm up quickly and stay that way out to about day 8 / 9, when the next trough will cool the Eastern Sierra down.

*The term temperature anomaly means a departure from a reference value or long-term average. A positive anomaly indicates that the observed temperature was warmer than the reference value, while a negative anomaly indicates that the observed temperature was cooler than the reference value.

Temperature Anomaly - Mammoth Mountain Weather GIFThe Wind Forecast GIF – Looking at the National Blend of Models wind forecast, wind speeds over the next week will be gusty during the afternoon and early evening hours. That’s when you can expect SW winds at 10-25 MPH over the high country and wind-prone areas of the Eastern Sierra. Yep, the wind forecast is about the same all Summer Long.

Wind Speed Forecast - Mammoth Mountain Weather GIFJet Stream – This is the ECMWF ENS Run of the Jet Stream at 200 hPa. 10 Day Jet Stream - Mammoth Mountain Weather GIF45-Day ECMWF ENS  RunLooking like the Dog Days of Summer will start right time on July 1st. The month of July is going to be warm for the high country and hot for the Bishop and Millpond area. Let’s hope some deep moisture makes its way in at some point to refresh the land with some rain.

45-Day - ECMWF 500mb Height Anomaly - Mammoth Mountain Weather GIF

Summer 2024 & Longer Range Outlooks: Expect above-average temperatures with a below-average monsoon season for the Summer Weather Season. I am not 100% convinced we will be as dry as models have shown during the spring.

Now that it’s June, I’d like to start looking at the ECMWF Seasonal Precipitation Model runs out six months. Below, you will find the 500mb Height anomaly for each month into November. Those will be followed the the precipitation anomaly images for each of those months. 

500mb Height Anomaly - ECMWF Seasonal - June 2024 Update
June – 500mb Height Anomaly – ECMWF Seasonal – June 2024 Update
500mb Height Anomaly - ECMWF Seasonal - June 2024 Update
July – 500mb Height Anomaly – ECMWF Seasonal – June 2024 Update
500mb Height Anomaly - ECMWF Seasonal - June 2024 Update
August – 500mb Height Anomaly – ECMWF Seasonal – June 2024 Update
500mb Height Anomaly - ECMWF Seasonal - June 2024 Update
September – 500mb Height Anomaly – ECMWF Seasonal – June 2024 Update
500mb Height Anomaly - ECMWF Seasonal - June 2024 Update
October – 500mb Height Anomaly – ECMWF Seasonal – June 2024 Update
500mb Height Anomaly - ECMWF Seasonal - June 2024 Update
November – 500mb Height Anomaly – ECMWF Seasonal – June 2024 Update
June - Precipitation Anomaly - ECMWF Seasonal - June 2024 Update
June – Precipitation Anomaly – ECMWF Seasonal – June 2024 Update
July - Precipitation Anomaly - ECMWF Seasonal - June 2024 Update
July – Precipitation Anomaly – ECMWF Seasonal – June 2024 Update
August - Precipitation Anomaly - ECMWF Seasonal - June 2024 Update
August – Precipitation Anomaly – ECMWF Seasonal – June 2024 Update
September - Precipitation Anomaly - ECMWF Seasonal - June 2024 Update
September -Precipitation Anomaly – ECMWF Seasonal – June 2024 Update
October - Precipitation Anomaly - ECMWF Seasonal - June 2024 Update
October -Precipitation Anomaly – ECMWF Seasonal – June 2024 Update
November - Precipitation Anomaly - ECMWF Seasonal - June 2024 Update
November – Precipitation Anomaly – ECMWF Seasonal – June 2024 Update

Last Update from DWP Precipitation for Mammoth Pass & the Eastern Sierra

El Nino - La Nina - Neutral Watch

ENSO State Update
ENSO State Update
ENSO State Update
ENSO State Update
ENSO State Update
ENSO State Update
ENSO State Update
ENSO State Update
ENSO State Update
ENSO State Update

* Mammoth Mountain and Eastern Sierra Weather is updated several times a week by local Steve Taylor. The goal is to provide detailed weather forecasts presented in an easy-to-read format. This isn’t a Hype, one-and-done model-run website. It’s just the basic facts from how I see it after 40 years of being involved in the local weather and recreation. And yes, I use Weather Bell for my forecasting data.

——————-

Author – Steve Taylor – The 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 reports. (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 and Bishop, along with KTLA, AP, Fox, ABC, CBS, and NBC News.

Click Here to Learn More About the People Who Make MammothSnowman.com a Reality