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Thu Nov 8, 2012, 01:24 PM

Brutus is forming in response to an usually large loop in the jet stream over the Western U.S.

Right on the heels of Winter Storm Athena comes Winter Storm Brutus--a powerful low pressure system that is taking shape over Southern Montana this morning. Light snows have begun in Southwest Montana, and will spread to the northwest across much of Montana and into western North Dakota this afternoon through Saturday.

As much as 12 to 18 of snowfall is expected for several major cities in Montana, including Great Falls, and over 2 feet is expected in the mountains. According to the Glasgow, MT NWS Facebook page, the current storm total snowfall amounts north of the Missouri River/Fort Peck areas would be within the top 10 two day snowfall totals across this region, going back 115 years.

Strong winds will combine with heavy snowfall to produce blizzard conditions across northeast Montana. Brutus is forming in response to an usually large loop in the jet stream over the Western U.S. On the east side of the jet stream axis, a southwesterly flow of air has pumped in record-breaking warm air from the Desert Southwest. Sheridan, Wyoming hit 79F Wednesday, breaking their previous all-time monthly record of 78 set on Nov. 5, 1975. Records go back to 1893. However, Sheridan will be on the west side of jet stream by Saturday, as the cold front associated with Brutus passes through Wyoming. This will bring Sheridan powerful northwest winds, 4 - 8 inches of snow, and high temperatures 50 colder than Wednesday's.

http://www.wunderground.com/blog/JeffMasters/comment.html?entrynum=2290

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Reply Brutus is forming in response to an usually large loop in the jet stream over the Western U.S. (Original post)
phantom power Nov 2012 OP
GliderGuider Nov 2012 #1
happyslug Nov 2012 #2

Response to phantom power (Original post)

Thu Nov 8, 2012, 01:27 PM

1. The Arctic ice pack melting affects Rossby waves? Who knew?

Thank goodness we don't need to worry about tipping points or dragon kings or anything...

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Response to phantom power (Original post)

Thu Nov 8, 2012, 06:58 PM

2. I hate to say this, try to stay with National Weather Service references

I know why the Weather Underground wants to use names, but until the National Weather Service agrees to do so, make it clear that such names are NOT official and is just what one private company is using.


http://www.weather.gov/

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