Alert archive / Minnesota / Winter Storm Warnings in 2017

Winter Storm Warning 10, NWS Duluth, MN

December 4, 2017Koochiching County, Minnesota

NWS Duluth, MN issued this winter storm warning at Dec 4, 2017, 9:11 AM CST for Koochiching County, Minnesota. It took effect at Dec 4, 2017, 12:00 PM CST. It was in force for 11 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Dec 4, 2017, 9:11 AM CST (15:11 UTC)
In effect from
Dec 4, 2017, 12:00 PM CST
Expired
Dec 4, 2017, 11:23 PM CST
In force
11 hr
Issued by
NWS Duluth, MN

County Koochiching County, MN

The radar

The Duluth radar (KDLH), 196 km from the middle of the area, began a volume at 15:11 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What forecasters said that day

The local office's own words before this winter storm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Duluth, MN wrote its last area forecast discussion before this winter storm warning went out at Dec 4, 6:29 AM CST, 2 hours 42 minutes earlier.

Area forecast discussion, Dec 4, 6:29 AM CST, 2 hours 42 minutes before
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Hazardous weather outlook, Dec 4, 5:31 AM CST, 3 hours 40 minutes before
Hazardous Weather Outlook
National Weather Service Duluth MN
531 AM CST Mon Dec 4 2017

MNZ010>012-018>021-025-026-033>038-WIZ001>004-006>009-051145-
Koochiching-North St. Louis-Northern Cook/Northern Lake-
North Itasca-Central St. Louis-Southern Lake/North Shore-
Southern Cook/North Shore-North Cass-South Itasca-South Cass-
Crow Wing-Northern Aitkin-South Aitkin-Carlton/South St. Louis-
Pine-Douglas-Bayfield-Ashland-Iron-Burnett-Washburn-Sawyer-Price-
531 AM CST Mon Dec 4 2017

This Hazardous Weather Outlook is for portions of northeast
Minnesota and northwest Wisconsin.

.DAY ONE...Today and Tonight

An early winter storm will affect the Northland this afternoon
through tonight. Weather conditions will become dangerous this
afternoon in parts of northern Minnesota from International Falls
through Walker, and the Brainerd lakes area. Rain will turn to
snow, temperatures will fall and winds will become very strong.
All these factors will result in near blizzard conditions and
possibly icy roads. These dangerous winter conditions will
overtake the Arrowhead region on northeastern Minnesota later this
evening. The Aitkin area, the Twin Ports, Pine City and far
northwestern Wisconsin will get snow and wind also in the evening.
The rest of Wisconsin will see the changeover from rain to snow
later tonight with gusty winds.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

Snow will gradually taper off to snow showers Tuesday over much
of the Northland. Lake effect snow showers are forecast over the
snowbelt areas of northwest Wisconsin for the remainder of the
week. Additional snow accumulations of 4 to 8 inches are possible
from Tuesday evening through early Thursday morning over portions
of Ashland and Iron Counties in Wisconsin, with lower totals
expected elsewhere in the northern Wisconsin snowbelt.

.SPOTTER INFORMATION STATEMENT...

Snow spotters are requested to report precipitation type, and
measurements of snow or ice accumulations to the National Weather
Service. Spotters and the public can also report precipitation
type with the free M-PING smartphone app.

LSZ121-140>148-051145-
Bayfield to Oak Point WI-Grand Portage to Grand Marais MN-
Grand Marais to Taconite Harbor MN-
Taconite Harbor to Silver Bay Harbor MN-
Silver Bay Harbor to Two Harbors MN-Two Harbors to Duluth MN-
Duluth MN to Port Wing WI-Port Wing to Sand Island WI-
Sand Island to Bayfield WI-Oak Point to Saxon Harbor WI-
531 AM CST Mon Dec 4 2017

This Hazardous Weather Outlook is for portions of the Nearshore
waters of western Lake Superior.

.DAY ONE...Today and Tonight

A strong storm system will move through the region today through
Tuesday bringing strong winds to western Lake Superior. East to
northeast winds are forecast today and may create conditions
hazardous to smaller vessels for areas from the Twin Ports east
along the south shore of northwest Wisconsin. Winds will quickly
back west to northwest tonight as the storm system moves through
northeast Minnesota to northwest Ontario by Tuesday morning.
Widespread gales are likely over western Lake Superior and a few
storm-force wind gusts are possible from Port Wing to Bayfield.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

Strong winds will continue Tuesday with widespread gales
expected. Occasional storm-force gusts to 50 knots are possible
off the tip of the Bayfield Peninsula through Tuesday morning.
West to northwest winds will gradually diminish through Tuesday
evening. Conditions will likely remain hazardous to smaller
vessels through Tuesday night into Wednesday.

With much colder air pouring into the region Tuesday and Tuesday
night, a period of heavy freezing spray is possible for waters
adjacent to northwest Wisconsin.

Huyck/CLC

More information may be obtained at the following web address:
http://www.weather.gov/duluth (all lower case)

The office that day

Everything else NWS Duluth, MN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Dec 4, 3:22 AM CSTWinter Storm WarningDLHAitkin, Cass, Cook, Crow Wing, Itasca, Koochiching and 2 more20 hr
Dec 4, 3:22 AM CSTWinter Weather AdvisoryDLHAitkin, Carlton, Cass, Cook, Crow Wing, Itasca and 3 more33 hr
Dec 4, 10:31 AM CSTStorm WarningDLH29 hr
Dec 4, 5:04 PM CSTSpecial Weather StatementDLHLake11 min
Dec 4, 5:20 PM CSTSpecial Weather StatementDLHLake10 min
Dec 4, 3:26 AM CSTWind AdvisoryDLHAshland, Bayfield, Iron, Price, Sawyer17 hr
Dec 4, 9:19 AM CSTLakeshore Flood AdvisoryDLHBayfield33 hr
Dec 4, 3:25 PM CSTWinter Weather AdvisoryDLHIron56 hr
Dec 4, 4:43 PM CSTSpecial Weather StatementDLHAshland32 min
Dec 4, 5:25 PM CSTSpecial Weather StatementDLHSawyer20 min

Nearby

Winter Storm Warnings in Minnesota, 2017Every winter storm warning in 2017

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.