Winter Storm Delphi to bring more snow to Northern Plains, Upper Midwest, including Minneapolis

Winter Storm Delphi Has Been Named

By Weather.com

Winter Storm Delphi has been named by the winter storm naming committee at The Weather Channel. Delphi will bring significant snow to parts of the northern Plains and Upper Midwest to start this week, including Minneapolis/St. Paul, Sioux City, Iowa, and Sioux Falls, South Dakota.

See photos of the winter season so far this year:

21 PHOTOS
Snow, winter weather 2015-2016 season across the U.S.
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Winter Storm Delphi to bring more snow to Northern Plains, Upper Midwest, including Minneapolis
LUBBOCK, TEXAS - DECEMBER 27: A highway worker tries to shield himself while walking to his truck on December 27, 2015 in Lubbock, Texas. Coming on the heels of several strong tornadoes, some northern parts of Texas are experiencing blizzard conditions with wind gusts up to 50 mph and as much as 13 inches of snow forecast. (Photo by John Weast/Getty Images)
NEDERLAND, CO - DECEMBER 15: Steve Hauser plows snow in the Caribou Shopping Center in Nederland, Colorado on December 15, 2015. Snow is expected to continue throughout the day. (Photo by Helen H. Richardson/The Denver Post via Getty Images)
NEDERLAND, CO - DECEMBER 15: A yellow lab waits patiently in his owner's snowy old truck along East 1st Street in Nederland, Colorado on December 15, 2015. Snow is expected to continue throughout the day. The dog looked warm and didn't wait long in the car as his owner returned shortly after an errand in the town. (Photo by Helen H. Richardson/The Denver Post via Getty Images)
DENVER, CO - DEC. 15: Anna Renton, 7, right, relaxes while neighbor Graham Langner, 7, has a snow fight with his nanny, Ashely Kish.The Denver metro area received more snow than expected overnight, closing schools across the city with some areas measuring a foot of snow by the early morning. (Photo by Kathryn Scott Osler/The Denver Post via Getty Images)
LAKEWOOD, CO - DECEMBER 15: Crut Liles clears snow from his walkways outside his home in Lakewood, December, 15, 2015. Many schools in the area are closed due to the snow storm. (Photo by RJ Sangosti/The Denver Post via Getty Images)
DENVER, CO - DEC. 15: A CDOT crew runs their plow truck southbound on Colorado Blvd. near E. 13th Ave. in Denver. The Denver metro area received more snow than expected overnight, closing schools across the city with some areas measuring a foot of snow by the early morning. (Photo by Kathryn Scott Osler/The Denver Post via Getty Images)
Al Frelk walks his dog, Shiba, 10, in Lords Park in Elgin, Ill., on Saturday, Nov. 21, 2015. Asked about the snow, Frelk said, 'It's beautiful, but can be tough to drive in. Though Shiba has been waiting 9 months for this.' The first winter storm of the season dropped more than 10 inches of snow at numerous Chicagoland locations. (Stacey Wescott/Chicago Tribune/TNS via Getty Images)
DENVER, CO - NOVEMBER 17: Snow hit the Denver metro area having an impact on air travel at Denver International Airport. They were clearing out from the snow on Tuesday, November 17, 2015. Raul Hernandez shovels snow in the economy lot. Hernandez and his crew had worked all night to clear snow. (Photo by Cyrus McCrimmon/The Denver Post via Getty Images)
LAKEWOOD, CO - NOVEMBER 11: Brandon Nelli, a student at Colorado Christian University in Lakewood, shovels snow during a Veteran's Day snow storm the moved into the area overnight, November, 11, 2015. Lakewood got almost 3 inches in some areas form the storm. (Photo by RJ Sangosti/The Denver Post via Getty Images)
DENVER, CO - NOVEMBER 11: A blanket of white snow covers Fort Logan National Cemetery during a Veteran's Day snow storm the moved into the area overnight, November, 11, 2015. (Photo by RJ Sangosti/The Denver Post via Getty Images)
MONUMENT, CO. - November 17: Bob Swift clearing his driveway of a deep drift of snow in Monument, CO. November 17, 2015 Monument, CO (Photo By Joe Amon/The Denver Post via Getty Images)
An above-average amount of snow covers a small cabin near where the first snow survey of winter conducted by the California Department of Water Resources in Phillips, California December 30, 2015. REUTERS/Fred Greaves
Cameron Shonnard backflips a jump at Squaw Valley in Olympic Valley, California, December 5, 2015. An El Nino is forecasted for California, and regular precipitation has been welcomed after years of drought. REUTERS/Max Whittaker TPX IMAGES OF THE DAY
Fresh snow clings to trees near Big Bend, California, December 4, 2015. An El Nino is forecasted for California, and regular precipitation has been welcomed after years of drought. Picture taken December 4. REUTERS/Max Whittaker
The U.S. Capitol dome can be seen behind piles of snow removed from parking areas and walkways around the Capitol grounds in Washington January 26, 2016. The snowbound Washington area was resuming partial business on Tuesday as trains and buses restarted near-normal service, while federal offices remained closed following a massive blizzard that hammered the U.S. East Coast. REUTERS/Jonathan Ernst TPX IMAGES OF THE DAY
Floodwaters cover Green Avenue after a winter storm in Manasquan, New Jersey, January 24, 2016. A morning high tide surge of 2 feet followed snowfall of about 2 feet in the first major storm of the season. REUTERS/Dominick Reuter
A couple poses for a photo on a snow pile during a snow storm in Times Square in the Manhattan borough of New York, January 23, 2016. REUTERS/Carlo Allegri TPX IMAGES OF THE DAY
WASHINGTON, DISTRICT OF COLUMBIA, UNITED STATES - 2016/02/15: Snow is once again falling across Washington, D.C on Monday, 15 February 2016. The bitter cold was replaced by snow, sleet and rain Monday in the mid-Atlantic states and the South, but many residents were able to hunker down at home with federal offices and many businesses closed for Washington's Birthday. (Photo by Probal Rashid/LightRocket via Getty Images)
A barn painted with the U.S. flag is seen in the snow covered field in Kanawha, Iowa, United States, January 16, 2016. Iowa will be the first state to hold its primary, with both Democratic and Republican events being held February 1, 2016. Picture taken January 16, 2016. REUTERS/Jim Young
Police officers gather outside the Montgomery County Courthouse, where actor and comedian Bill Cosby will arrive for a preliminary hearing on sexual assault charges, in Norristown, Pennsylvania February 2, 2016. Cosby has been charged with the 2004 sexual assault of Andrea Constand, a former women's basketball team manager at Temple University in Philadelphia, Cosby's alma mater. REUTERS/Mark Makela REUTERS/Mark Makela
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MORE: Science Behind Naming Winter Storms

Low pressure in the upper atmosphere has been stuck swirling over the Great Basin during the Thanksgiving holiday, trapped to the south of a corresponding area of high pressure aloft in an atmospheric logjam known to meteorologists as a "Rex block".

As a result, the weather had been rather stagnant and unchangeable, with periods of freezing rain, sleet and snow in the Plains and West from Winter Storm Cara in recent days.

winter storm delphi

Now, that blocked-up jet stream pattern is finally giving way.

The upper-level low mentioned above will finally pivot east into the Midwest early this week. As it does so, moisture in the atmosphere will be lifted, and cold air in place will yield a swath of snow from late Sunday into Tuesday night from the High Plains to the Corn Belt, Upper Mississippi Valley and northern Great Lakes.

Winter storm warnings and watches have already been posted from central Kansas through eastern Nebraska, eastern South Dakota, southwestern Minnesota and northern and western Iowa, meaning the possibility exists for snowfall amounts greater than 6 inches within the next 48 hours.

winter storm delphi

Winter weather advisories are in effect across the Texas Panhandle, western Oklahoma, western Kansas, central and southern Nebraska, central South Dakota, south-central North Dakota, as well as in parts of eastern Minnesota and northwestern Wisconsin, where somewhat lower snowfall totals are anticipated.

winter storm delphi

Winter Storm Delphi Snow Timing

Into Early Monday Morning

Snow spreads from the Colorado High Country into eastern Colorado, western Kansas, western/central/northeast Nebraska, southeast South Dakota, northwest Iowa and far southwest Minnesota.

In addition, some sleet or freezing rain is possible to the east of that snow area from the Texas Panhandle and northwest Oklahoma to central Kansas, southeast Nebraska, central Iowa, far southeast Minnesota and southwest Wisconsin.

Monday-Monday Night

Snow, possibly heavy, continues in parts of the northern and central Plains, including South Dakota, southeast North Dakota, Nebraska, parts of northwest Iowa, central and southern Minnesota and northwestern Kansas. Mixed wintry precipitation is expected from north-central Kansas, southeast Nebraska to central Iowa, far southeast Minnesota and southwestern Wisconsin.

2 PHOTOS
Winter Storm Cara
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Winter Storm Delphi to bring more snow to Northern Plains, Upper Midwest, including Minneapolis
Al Frelk walks his dog, Shiba, 10, in Lords Park in Elgin, Ill., on Saturday, Nov. 21, 2015. Asked about the snow, Frelk said, 'It's beautiful, but can be tough to drive in. Though Shiba has been waiting 9 months for this.' The first winter storm of the season dropped more than 10 inches of snow at numerous Chicagoland locations. (Stacey Wescott/Chicago Tribune/TNS via Getty Images)
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This may lead to a challenging morning commute in Omaha and Lincoln, Nebraska. Monday afternoon's commute may be tricky in Sioux Falls, Omaha, and Minneapolis/St. Paul.

Snow continues Monday night across northern Nebraska, South Dakota, southeast North Dakota, Minnesota, northwest/western Iowa and northern Wisconsin. Some blowing and drifting snow is possible in the Dakotas and Nebraska Monday night.

Travel should be avoided in the areas mentioned above Monday night, including I-35, I-94, I-90 and I-29.

winter storm delphi

Tuesday

Leftover snow is possible in the northern Great Lakes and Upper Midwest, from Michigan's Upper Peninsula to northern Wisconsin, Minnesota, Iowa and parts of the Dakotas.

This has the potential to disrupt both the morning and afternoon commutes in Minneapolis/St. Paul, and leftover snow and wind in the morning could also pose problems in Sioux Falls.

Any lingering snow showers should end early on Wednesday.

winter storm delphi

With some uncertainty remaining in the forecast depending on how the storm system evolves, here is the general snow total outlook through Tuesday night:

At least 6 inches of snow possible: parts of northeast Nebraska, eastern South Dakota, extreme southeast North Dakota, northern Iowa, southern and central Minnesota, and northwestern Wisconsin.

Lighter snowfall possible: Northern Minnesota, Colorado, northern New Mexico, western/northern Kansas, western/central/southern Nebraska, western South Dakota, south-central North Dakota, central/southwest Iowa, northeast Wisconsin and the Upper Peninsula of Michigan.

FORECASTS: Omaha | Sioux Falls | Minneapolis/St. Paul

Parts of southeast South Dakota, northeast Nebraska and northern Iowa just finished digging out from Winter Storm Bella, which dumped up to 18 inches of snow near Sioux Falls last weekend.

At the same time, Minneapolis/St. Paul finally picked up its first measurable snowfall of the season on Thanksgiving Day, their seventh latest "first snow" of the season on record.

Interestingly, according to the National Weather Service, the period from September 1 through November 26 was the second warmest such period on record in the Twin Cities.

The last snowstorm of 6 inches or more in the Twin Cities (airport) was April 3-4, 2014. The last official 10 inch snowstorm at the airport was Dec. 9, 2012 when 10.5 inches accumulated.

Winter Storm Delphi Snow Forecast

Winter Storm Delphi Snow Forecast

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