/Issued 7:06 PM CDT, Sunday, March 17th, 2013/
Storm track forecast per Weather Prediction Center.
Red=Storm position at 7 PM This Evening.
Green=Storm position at 7 AM Monday.
Orange=Storm position at 7 PM Monday.
Surface map for 6 PM CDT This Evening. Low pressure was in Western South Dakota.
Storm timeline for Duluth:
-Clouds continue to thicken and lower through Midnight. ESE winds gusting to 20 mph.
-Snow develops between 2-5 AM Tonight.
-Snow Monday Morning, could be heavy at times. (1″/hour snow rates possible)
-Light snow/flurries continue Monday Afternoon into Monday Night with increasing NW winds.
-Some blowing and drifting snow late Tonight-Monday Night.
-Total snowfall accumulations 3-6″, bulk of it falls before Noon Monday.
Evening winter weather update
At 6 PM CDT, low pressure of 996mb was centered in Western South Dakota with a 1002mb low over Northwest North Dakota. The main low is the one in Western South Dakota and it’s this low that’ll track into Western Minnesota by dawn Monday and then out over Western Lake Superior by Monday Evening.
Snow will begin before Midnight Tonight along and west of a line from International Falls to Brainerd. Snow will spread east-northeast after Midnight and should reach the Iron Range, Twin Ports and I35 corridor between 2-4 AM. Snow is then forecast to move into the Arrowhead, North Shore and Northwest Wisconsin after 4 AM.
There is a possibility for a 3-6 hour period of moderate to even heavy snowfall rates (Up to 1″/hour) across the Northland late Tonight and Monday Morning.
Expect southeast winds at 10-20 mph with higher gusts possible Tonight and Monday Morning. Winds will shift to the west and eventually the northwest as the low pulls away Monday Afternoon and Monday Night with winds possibly gusting over 25 mph during that time.
Some blowing and drifting snow is possible late Tonight through Monday Night, although I think the better chance for this to happen will come late Monday Afternoon through Monday Night as winds become even stronger on the backside of the surface low.
3-6″ of snow is expected between late Tonight and Monday Afternoon in Northeast Minnesota and Northwest Wisconsin. Heavier amounts on the order of 6-10″ are possible in Northern Minnesota, including the Iron Range and also along the North Shore of Lake Superior from Two Harbors to Grand Marais where southeast winds may lead to some lake enhanced snowfall on Monday.
Travel conditions won’t be the best starting late Tonight and lasting into Monday Night. Roads will become snow covered and slippery, and visibilities could be reduced to a quarter mile or less at times due to either falling snow or a combination of falling and blowing snow. Use extreme caution if you have travel plans in the Northland and be sure to allow extra time to reach your destination.
Red=High risk for at least 4″ of snow.
Green=Moderate risk for at least 4″ of snow.
Blue=Slight risk for at least 4″ of snow.
This map is valid for Tonight and Monday. (Source, WPC)
Blue=Slight risk for at least 8″ of snow.
This map is valid for Tonight and Monday. (Source, WPC)
-Latest headline information per National Weather Service Duluth, MN-
*WINTER STORM WARNING* for Koochiching…Northern Itasca…and Northern St. Louis County Minnesota from 9 PM This Evening until 12 AM CDT Monday Night. Some cities included in the warning are: International Falls…Northome…Craigville…Squaw Lake…Bigfork…Togo…Nett Lake…Crane Lake…Orr…and Ely.
*WINTER WEATHER ADVISORY* for Lake and Cook County Minnesota from 7 AM Monday until 5 AM CDT Tuesday. Some cities included in the advisory are: Two Harbors…Silver Bay…Finland…Isabella…Lutsen…and Grand Marais.
*WINTER WEATHER ADVISORY* for Central and Southern St. Louis and Carlton County Minnesota from 4 AM Monday until 12 AM CDT Monday Night. Some cities included in the advisory are: Hibbing…Cotton…Floodwood…Duluth…Cloquet…Wright…and Moose Lake.
*WINTER WEATHER ADVISORY* for Cass…Southern Itasca…Crow Wing…and Aitkin County Minnesota from 9 PM This Evening until Midnight CDT Monday Night. Some cities included in the advisory are: Cass Lake…Walker…Pine River…Brainerd…Hill City…Aitkin…and McGregor.
*WINTER WEATHER ADVISORY* for Pine County Minnesota and for Douglas…Burnett…and Washburn County Wisconsin from 4 AM Monday until 12 AM CDT Monday Night. Some cities included in the advisory are: Hinckley…Pine City…Superior…Solon Springs…Danbury…Siren…Grantsburg…Minong…Shell Lake…and Spooner.
*WINTER WEATHER ADVISORY* for Bayfield…Sawyer…and Price County Wisconsin from 7 AM Monday until 12 AM CDT Monday Night. Some cities included in the advisory are: Port Wing…Bayfield…Hayward…Winter…Park Falls…and Phillips.
*WINTER WEATHER ADVISORY* for Ashland and Iron County Wisconsin from 7 AM Monday until 12 PM CDT Tuesday. Some cities included in the advisory are: Ashland…Butternut…Glidden…Upson…Gile…and Hurley.
This is a large winter storm!
Red=Blizzard Warning
Pink=Winter Storm Warning
Purple=Winter Weather Advisory
Upper Midwest radar loop, ending at 6:30 PM CDT This Evening.
Snow is starting to become better organized now in Eastern South Dakota, back into Central North Dakota.
Tim
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