On the night of April 5th, 2020 , moist & unstable air moved over western Wyoming causing thunderstorms and a relatively intense graupel event (round, puffy pellets of snow). In combination, this would be termed a “Thundersnow” event.  Infra-red Satellite image below showing the bright green “cell” that contained those thunderstorms from Sunday night. Thundersnow … Continue reading April Thundersnow →

A potent storm system in the Gulf of Alaska will bring snow to the mountains of the Pacific Northwest and Northern Rockies today through Tuesday, lingering into April Fool’s Day. Map below shows position of Low-pressure Monday, March 30th and forecast position on Tuesday March 31st. Jet stream also pushes inland across Oregon, Idaho and … Continue reading More Snow, No Foolin →

The “meteorological” winter season is officially ended, defined by the months of December, January and February. The astronomical winter season, which began on the Winter Solstice (December 21st, 2019), runs until the Spring Equinox on March 19th this year. Below is a re-cap of all the highs and lows and snow that we experienced here … Continue reading Jackson Hole Winter 2019-20 Review →

On the last day of this Corona-Virus-shortened ski season the Town of Jackson and the Jackson Hole Mountain Resort both broke snowfall records. That happened just when we thought spring was arriving early this March. Town Snowfall Record:12 inches of new snow was recorded at the Jackson Climate Station on the morning of March 15th, … Continue reading Record March Snowfall in Jackson, WY →

You may not be aware of it, but today, February 5th is National Weatherpersons Day. Celebrate with your favorite meteorologist, buy him or her a beer! This is also the beginning of a steady Northwesterly flow or “Dirty Ridge” event for the northern Rockies. As a Ridge of High pressure parks off the West Coast … Continue reading Snow in a Northwest Flow →

If you lived in Jackson for the last 12 months or so and I were to ask you to name three things you remember about the weather in 2019, the top three answers likely would be: 1) February was really snowy. 2) Summer was too short. 3) October was really cold. Correct on all counts. … Continue reading 2019: Coldest Year on Record for Jackson, Wyoming →

If you are a frequent Weather Channel watcher, you have probably heard the terms they use to describe a variety of winter storms, such as, “Atmospheric Rivers”, “Polar Vortexes” and “Bomb Cyclones”. All of which sound quite ominous! It reminds me of that line in the Wizard of Oz, “Lions and Tigers and Bears, Oh … Continue reading Creating a Winter Atmosfear →

Low-pressure systems have been swinging across the Southwestern U.S. this past week or so, but leaving the northern & central Rockies to catch the fringes of those weather systems. That is about to change, for the start of the New Year. Current Weather Pattern This series of 700mb maps (@10,000-ft.) shows the transition of the … Continue reading New Snow for the New Year →

The outlook for fresh powder in the Western United States between Christmas and New Year’s Day is not looking too cheery for many locations. A split jet stream flow in the Pacific will send three separate Low pressure systems on a southerly track across the Southwestern U.S. That will favor the southern Sierra Nevada (Mammoth) … Continue reading Holiday Snow Update →

This Saturday is the Winter Solstice and the official start to the winter season, according the calendar at least. Next week is Christmas and then it’s a whole New Year! To help you plan you your travels, or your ski destination, or to just to get a sense of how white your Christmas is going … Continue reading Holiday Snowfall Forecast →