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Mountain West Discussion


Chinook

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The temps here are below what was expected. It is only 45 degrees.

The southwestern low looks like it will come through northern Colorado on Friday night. It will be shearing out its circulation, and not providing easterly flow. It looks like there will be a number of inches of snow for the western mountains, mainly at high elevations. The central plains (Kansas and Oklahoma) will really load up with a lot of precipitable water and lots of rain with this system. The GFS shows light rain accumulations here at the Front Range. I'm not very sure that this will be much of a rain event here. The GFS shows a lot of wind at 850 and 700mb after the low and cold front goes through, so I expect some gale force winds at some places on Saturday or Sunday.

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The temps here are below what was expected. It is only 45 degrees.

It looks like there will be a number of inches of snow for the western mountains, mainly at high elevations. The central plains (Kansas and Oklahoma) will really load up with a lot of precipitable water and lots of rain with this system.

Brrr. I left my coat at home in anticipation of upper 50s, making for two chilly walks across campus.

"A number" of inches... perhaps i, or e, or pi. Wait, that's a letter of inches. So, maybe 10^9. That would make for good skiing. :)

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Brrr. I left my coat at home in anticipation of upper 50s, making for two chilly walks across campus.

"A number" of inches... perhaps i, or e, or pi. Wait, that's a letter of inches. So, maybe 10^9. That would make for good skiing. :)

Yep. 2.718281828 inches of snow for areas over 10,000+3.14 ft above sea level. 10^9 inches would be much larger than the radius of the Earth.

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Brrr. I left my coat at home in anticipation of upper 50s, making for two chilly walks across campus.

"A number" of inches... perhaps i, or e, or pi. Wait, that's a letter of inches. So, maybe 10^9. That would make for good skiing. :)

I don't want an imaginary amount of snow..

Hey interesting storm coming up for Friday. It looks pretty wet either way but..

MOST MODELS HAVE INDICATED HEAVIEST RAIN WILL BE OVER THE

SOUTHWEST...MAINLY THURSDAY NIGHT AND EARLY FRIDAY. HOWEVER LATEST 12Z

NAM IS GENERATING VERY HEAVY RAIN OVER THE WASATCH FRONT...WASATCH

AND UINTA MOUNTAINS FRIDAY NIGHT IN A WARM SECLUSION TYPE PATTERN.

THIS PATTERN RESULTS FROM THE COLD UPPER LOW TRACKING THROUGH

CENTRAL UTAH WITH WARM AIR WRAPPED AROUND THE NORTH SIDE OF THE

SYSTEM SO THAT AS THE FLOW ALOFT BECOMES NORTHWESTERLY IT

REPRESENTS STRONG WARM AIR ADVECTION INSTEAD OF THE USUAL COLD AIR

ADVECTION NORMALLY ASSOCIATED WITH A WIND SHIFT TO THE NORTHWEST. WOULD

LIKE TO SEE SOME OF THE OTHER MODELS DO SOMETHING SIMILAR WITH

THEIR QPF BEFORE GETTING TOO EXCITED ABOUT SUCH A BIG PRECIP EVENT

OVER THE NORTH.

I am very intregued by the warm seclusion idea. I'd love to see that as the NAM shows over an inch of rain.

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Over the weekend we got 0.15" to 0.19" in Fort Collins.

Next up: Wind! This is the text from the High Wind Warning for 6000-9000 ft

WINDS...WEST WINDS WILL INCREASE TO 25 TO 40 MPH WITH GUSTS UP

TO 70 MPH BY LATE AFTERNOON. WIND GUSTS UP TO 70 MPH WILL

CONTINUE INTO THE EVENING HOURS.

I think that tonight and tomorrow, Fort Collins could see gusts to 40 or 45mph.

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Had a 71 mph wind gust here in Twin Falls Tuesday with the high winds. Lots of trees, power poles and powerlines down. We also had one barn destroyed.

Pretty impressive! We had a gust to 52 here in Provo with some limb damage and leaves everywhere...but thats about it. Mid-long range models are starting to look more interesting eh?

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Pretty impressive! We had a gust to 52 here in Provo with some limb damage and leaves everywhere...but thats about it. Mid-long range models are starting to look more interesting eh?

Yeah most definitely. Our snow levels could fall to the valley floors next week here - definitely liking the way things are looking with plenty of systems set to impact much of the NW.

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Yeah most definitely. Our snow levels could fall to the valley floors next week here - definitely liking the way things are looking with plenty of systems set to impact much of the NW.

Looks like a pretty solid precip event setting up for somebody depending on where the front stalls out for a few days. Currently the focus on the 00z gfs is off to my NW but I'd get something. Then, as you said, it looks cold enough for snow to fall to the valley floors if that cold air can punch in.

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Fort Collins, Christman Field: 66.5mph wind gust at 9:55PM Tuesday (wind speed 49.5mph)

Fort Collins CSU station: 43.2mph at 9:30PM Tuesday

Fort Collins-Loveland Airport: 41 knots (47mph) at 10:15PM on Tuesday October 16th

Most of Fort Collins: 25-40mph wind gusts Tuesday night/Wednesday Morning

NCAR Mesa Labs: 72mph wind gust

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It looks like the 00z Euro and the GFS now both have the bomb solution, or at least a faster developing storm in northern Minnesota. I looked at the12z GFS and it seems to develop an upslope snowstorm at about 144 hours. Check this out.

post-1182-0-06295800-1350847919_thumb.pn

post-1182-0-16748000-1350847917_thumb.pn

post-1182-0-16437200-1350847918_thumb.pn

post-1182-0-58198100-1350849086_thumb.pn

Check this out. The Euro also has an upslope storm with a favorable 500mb trough

post-1182-0-17080700-1350849088_thumb.pn

post-1182-0-56506600-1350849087_thumb.pn

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Interesting weather day in Northern Utah. My aunt up on bear lake got a foot of snow this morning. My cousins in logan reported 3 inches. Brief snow fell further south in Odgen. A cold rain in Salt Lake..and the temp never fell below 40 here with no rain or snow.

As for this evening a band of rain and snow is setting up over Ogden right now, it looks to drift south. I doubt it makes it here, but if it does several inches of snow may fall by morning.

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