Alert archive / Wisconsin / Winter Storm Watches in 2021

Winter Storm Watch 6, NWS Duluth, MN

December 9, 2021Price County, Sawyer County, Wisconsin

NWS Duluth, MN issued this winter storm watch at Dec 9, 2021, 3:39 AM CST for Price County, Sawyer County, Wisconsin. It took effect at Dec 10, 2021, 12:00 PM CST. It was in force for .

The area

The counties it named.

The facts

Issued
Dec 9, 2021, 3:39 AM CST (09:39 UTC)
In effect from
Dec 10, 2021, 12:00 PM CST
Expired
Dec 9, 2021, 2:19 PM CST
In force
Issued by
NWS Duluth, MN

Counties Price County, WI, Sawyer County, WI

The radar

The Duluth radar (KDLH), 162 km from the middle of the area, began a volume at 09:43 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.

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 00:00Z, 9.7 hours before the alert went out and 253 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Green Bay/Straub, WI at 00:00Z on 2021-12-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Green Bay/Straub, WI at 00:00Z on 2021-12-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -21 square meters per square second.1939587897117136Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1234 m above ground
0-6 km bulk shear
75 kt
0-1 km storm-relative helicity
-21 m²/s²
0-3 km storm-relative helicity
82 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this winter storm watch 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 watch went out at Dec 8, 11:29 PM CST, 4 hours 10 minutes earlier.

Area forecast discussion, Dec 8, 11:29 PM CST, 4 hours 10 minutes before
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Hazardous weather outlook, Dec 8, 5:43 PM CST, 9 hours 56 minutes before
Hazardous Weather Outlook
National Weather Service Duluth MN
543 PM CST Wed Dec 8 2021

MNZ010>012-018>021-025-026-033>038-WIZ001>004-006>009-092345-
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-
543 PM CST Wed Dec 8 2021

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

.DAY ONE...Tonight

Light snow will spread into the region tonight, with a dusting of
snow expected by early Thursday morning.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

Light snow will continue across the Northland Thursday. Widespread
snow amounts of up to an inch are expected. Areas along the North
Shore will see higher amounts of 4 to 6 inches and a Winter
Weather Advisory has been issued for Southern Cook County. Locally
higher snowfall amounts are possible along the higher elevations
of Cook County.

A storm system is forecast to move through the region Friday and
Saturday. At this time accumulating snow appears likely for parts
of northwest Wisconsin where some shovelable snowfall amounts are
possible.

.SPOTTER INFORMATION STATEMENT...

Snow spotters are requested to report their snowfall measurements
today and tomorrow to the National Weather Service.

LSZ121-140>148-150-092345-
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-
Outer Apostle Islands Beyond 5 NM from Mainland-
543 PM CST Wed Dec 8 2021

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

.DAY ONE...Tonight

Gusty south winds are expected to develop tonight and cause
hazardous conditions for small craft. A Small Craft Advisory has
been issued starting tonight for parts of western Lake Superior.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

Gusty south to southwest winds are expected to continue Thursday
and Thursday night, producing hazardous conditions for small
craft. A Small Craft Advisory remains in effect through Thursday
night.

An area of low pressure will move through the region Saturday and
as it exits could create a period of hazardous winds and waves
Saturday into Sunday.

Levens/Melde

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 9, 2:19 PM CSTWinter Storm WarningDLHIron, Price, Sawyer42 hr
Dec 9, 2:19 PM CSTWinter Weather AdvisoryDLHAshland, Bayfield, Burnett, Iron, Sawyer, Washburn42 hr

Nearby

Winter Storm Watches in Wisconsin, 2021Every winter storm watch in 2021

Sources

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