All posts by Jim Woodmencey

So close to being the Snowiest Month Ever in Jackson

UPDATED: Friday March 8th, 2019……
The final snowfall calculation was just updated and submitted by the NWS for the  Jackson Climate Station for the month of February 2019 …..turns out, Jackson’s total snowfall was within one inch of the all-time monthly snowfall record, in any month!

Final total that goes in the books for February 2019 is 55.1 inches. The all-time record snowfall in any month is 56 inches, from January of 1969. About as close as you can get to that record, which has stood for 50 years.

That places February of 2019 as the second snowiest month ever record  in the Town of Jackson, for any month of the year.

In the Pow @JacksonHole: @camfitzpatrick. Photo: @jaredspieker

I also reviewed all the old records to find that the previous second place award for snowfall in Jackson was in January 1967, with 48.3 inches. February 2019 easily kicked that one to third place.

Updated Mountain Snowfall Numbers

At the Rendezvous Bowl site (9,580-ft.), on the upper mountain at the Jackson Hole Mountain Resort, February 2019 ended with 196 inches for the month. Easily becoming the Snowiest February , beating the old record of 149 inches from 2017.

As a matter of fact, the three snowiest February’s at this site, all occurred within the last 5 years: 2019, 2017 & 2014.

And this will go down as the Second Snowiest month in history at JHMR.

The most snow ever in a month was in December of 1996 with 225 inches of snow.

Still Snowing!….Wednesday morning, Thunder chair JHMR.

WOW! What a BIG February it was for SNOW in Jackson Hole…

Nothing like it in our history. OK, in our recent history, not including any past Ice Ages.

Post & Updated by meteorologist Jim Woodmencey.


February Finishes with MORE Snow

One of the snowiest February’s ever for many parts of the Western United States is not quite over. More snow on the way for the Pacific Northwest & Northern Rockies. Looks like the Sierra Nevada & Colorado miss out on this weekend’s snow for the most part

The Set-Up

A cold Low-pressure center on the British Columbia Coast will drop further south & direct a relatively long stream of Pacific moisture inland across Washington, Oregon, Idaho & Western Wyoming beginning Saturday. That moisture is moving along in a very fast, Westerly flow aloft. Expect big snow & big wind with this go-around.

That hose-down will continue through Monday night and possibly into Tuesday of next week. Adding to the already epic snow totals experienced this month, from the day it started on February 2nd.

Makes me thing that the Groundhog is either really pissed-off or he has been reincarnated as Ullr the Snow-god!

Big Snow & Big Wind

The Cascades of Washington & Oregon, 4 or 5 feet in paces not out of the question. Idaho’s western mountains, and the western mountains of Wyoming,including the Tetons, Yellowstone Park & the Wind River Range accumulate another 3 feet at the higher elevations.

Valley locations will also see good accumulations, so keep the shovels & ibuprofen handy.

A strong Westerly flow aloft develops Saturday, causing a lot of blowing & drifting and likely raising the avalanche hazard once again.

Temps will warm thru Sunday & Monday, as well. But rain to elevations @6,000-ft.

The Blue Bars on the graph of the Jackson Hole Forecast tell the tale….that really adds up the next few days…..

Posted by meteorologist Jim Woodmencey

Jackson Wyoming Breaks February Snowfall Record

On Valentine’s Day 2019, the Town of Jackson Wyoming broke their February snowfall record with a total of 35.3 inches recorded for the month. The old snowfall record for February was 33 inches, for the entire month, in 1978.

Add to that another 3 inches of snow recorded at the Jackson Climate Station on Friday morning Feb. 15th, and the monthly total now stands at 38.3 inches. With this month only half over!


My House on Feb. 5th, 2019.

Chasing the All-Time Record Snowfall

With two weeks left in the month, we are now chasing the next record in line, the second snowiest month ever recorded in Jackson of 48.3 inches in January of 1967. Behind that was the 47.5 inches of snowfall in December of 2008 (the snowiest December ever recorded in town).

After that,  the all-time record snowiest month in town was in January 1969, with 56 inches of snow in one month.

Mountain Snowfall Impressive Too

At the Jackson Hole Mountain Resort, the Rendezvous Bowl weather station at 9,580-ft., has recorded 97 inches of snowfall during the first two weeks of February this year (between Feb 1st & 14th, 2019). That is also a record for that time period.

The old record snowfall at Rendezvous Bowl for the first two weeks of February was 92 inches, in February 2017.

This is what it’s been like at JHMR this February, day after day……
CLICK to View Video

Click to watch Cam FitzPatrick sample the February snow at JHMR

The record snowfall for the month of February in Rendezvous Bowl is 149 inches, also from 2017.

I guess we’re chasing that number now the rest of February 2019!


Post by meteorologist Jim Woodmencey

Next Big Thing

The next round of storms, already moving into the Western United States, with BIG snowfall amounts on tap from the Sierras to the Rockies the next 2 to 3 days.

What’s developing is a Low-pressure center on the West Coast that will combine forces with another Low in the Gulf of Alaska.

Satellite view below shows those Lows, plus the “pineapple” connection on the Satellite image below. Yellow line is the jet stream flow, bringing subtropical moisture from just south of Hawaii to the West Coast.

Satellite Image on 13th February 2019

Computer model map below shows snowfall totals from Wednesday morning February 13th to Friday morning February 15th.

NAM model Snow Accumulation thru Friday morning, Feb. 15.

Measuring in feet of snow….again!

Feet of snow again for the High Sierra. The difference from the many feet that have already fallen since the Groundhog’s Day Weekend, is that snow levels will higher in the Sierras, as temperatures warm through the storm. Rising above the 6000-ft. elevation initially, then cooling temps lower snow levels by Friday.

In the Rockies, it will be all snow at elevations above @ 5000-ft. temperatures will get warmest on Thursday, then cool again Friday into Saturday.

A Snowy February 2019

Turning into a very snowy February, and we are only halfway through the month.

For instance, Jackson, Wyoming (where I live) is about to break their snowfall record for the month of February! More on that later…..

Post by meteorologist Jim Woodmencey

Groundhog’s Day Snowstorm

Groundhog’s Day Weekend 2019 looks like it will be a snowy one for the mountains of the Western United States…measured in feet of accumulation in some places!

Three separate Low-pressure centers will develop and combine to give the weekend a one-two-three punch, beginning in the Sierra Nevada mountains Friday night, February 1st, extending inland to the Rockies beginning later Saturday, February 2nd, and continuing to snow across the Western U.S. thru Monday, February 4th.


This combo of storm systems will accumulate decent snowfall, especially for some parts of the Sierra, exceeding 5 feet!

The mountains of Northwest Wyoming should do well, with 15 to 20 inches in the Tetons, 2 feet or more in parts of Yellowstone Park and in the Wind River mountains.

Below is the NAM model prediction, from NexLab:

Click Image for video loop

Below is the CAIC forecast snowfall accumulation for Friday afternoon thru Monday afternoon, Feb. 1 to 4, 2019 and it is just as robust as the NAM with the snow accumulation thru the weekend.

CAIC WRF model

Happy Groundhog’s Day, the official halfway point of the winter season!

Post by Meteorologist Jim Woodmencey