Alert archive / Wisconsin / Winter Storm Warnings in 2021

Winter Storm Warning 6, NWS Duluth, MN

December 9, 2021Iron County, Price County, Sawyer County, Wisconsin

NWS Duluth, MN issued this winter storm warning at Dec 9, 2021, 2:19 PM CST for Iron County, Price County, Sawyer County, Wisconsin. It took effect at Dec 10, 2021, 12:00 PM CST. It was in force for 20 hr. 16 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Dec 9, 2021, 2:19 PM CST (20:19 UTC)
In effect from
Dec 10, 2021, 12:00 PM CST
Expired
Dec 11, 2021, 7:54 AM CST
In force
20 hr
Issued by
NWS Duluth, MN

Counties Iron County, WI, Price County, WI, Sawyer County, WI

The radar

The Duluth radar (KDLH), 158 km from the middle of the area, began a volume at 20:26 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 was reported inside it

TimeReportWhereRemark
Dec 11, 1:40 AM CSTSNOW 3Gile, WI
Dec 11, 4:00 AM CSTSNOW 121 E Spirit, WICOCORAHS STATION WI-PR-7 BRANTWOOD 7.4 S.
Dec 11, 6:00 AM CSTSNOW 4.52 Wnw Seeley, WICOCORAHS STATION WI-SR-1 HAYWARD 9.2 NNE.
Dec 11, 6:00 AM CSTSNOW 63 Sw Butternut, WICO-OP OBSERVER STATION BUTW3 BUTTERNUT 3 SW.
Dec 11, 6:00 AM CSTSNOW 10.31 S Phillips, WICOCORAHS STATION WI-PR-6 PHILLIPS 1.3 S.
Dec 11, 6:30 AM CSTSNOW 7.96 Sw Butternut, WICOCORAHS STATION WI-PR-2 BUTTERNUT 5.9 SW.
Dec 11, 7:00 AM CSTSNOW 5Pence, WICOCORAHS STATION WI-IR-3 PENCE 0.1 E.
Dec 11, 7:00 AM CSTSNOW 71 N Park Falls, WICOCORAHS STATION WI-PR-4 PARK FALLS 1.3 N.
Dec 11, 7:00 AM CSTSNOW 93 Sse Brantwood, WICOCORAHS STATION WI-PR-14 BRANTWOOD 2.5 S.
Dec 11, 7:00 AM CSTSNOW 96 Se Phillips, WI
Dec 11, 7:30 AM CSTSNOW 71 Nw Manitowish, WICOCORAHS STATION WI-IR-2 MERCER 2.0 SE.
Dec 11, 7:43 AM CSTSNOW 84 Wnw Park Falls, WI
Dec 11, 8:00 AM CSTSNOW 4.37 Nne Mercer, WICOCORAHS STATION WI-IR-4 MERCER 7.0 NNE.
Dec 11, 8:00 AM CSTSNOW 51 Nw Hurley, WICO-OP OBSERVER STATION HURW3 HURLEY.
Dec 11, 8:00 AM CSTSNOW 6.2Mercer, WICOCORAHS STATION WI-IR-5 MERCER 0.4 N.
Dec 11, 8:00 AM CSTSNOW 7Park Falls, WICO-OP OBSERVER STATION PKFW3 PARK FALLS.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 8.3 hours before the alert went out and 255 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 12:00Z 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 12:00Z on 2021-12-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 252 square meters per square second.19395878Sfc1 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
953 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
252 m²/s²
0-3 km storm-relative helicity
321 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

145 
WWUS43 KDLH 092019
WSWDLH

URGENT - WINTER WEATHER MESSAGE
National Weather Service Duluth MN
219 PM CST Thu Dec 9 2021

WIZ009-100830-
/O.UPG.KDLH.WS.A.0006.211210T1800Z-211211T1500Z/
/O.NEW.KDLH.WS.W.0006.211210T1800Z-211211T1500Z/
Price-
Including the city of Phillips
219 PM CST Thu Dec 9 2021

...WINTER STORM WARNING IN EFFECT FROM NOON FRIDAY TO 9 AM CST
SATURDAY...

* WHAT...Heavy snow expected. Total snow accumulations of 5 to 
  10 inches.

* WHERE...Price County.

* WHEN...From noon Friday to 9 AM CST Saturday.

* IMPACTS...Travel could be very difficult. The hazardous 
  conditions could impact the evening commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

The latest road conditions can be obtained by calling 5 1 1. 
Road conditions can also be found at 511mn.org for Minnesota or
511wi.gov for Wisconsin.

&&

$$

WIZ008-100830-
/O.UPG.KDLH.WS.A.0006.211210T1800Z-211211T1500Z/
/O.NEW.KDLH.WW.Y.0020.211210T1800Z-211211T1500Z/
Sawyer-
Including the city of Hayward
219 PM CST Thu Dec 9 2021

...WINTER WEATHER ADVISORY IN EFFECT FROM NOON FRIDAY TO 9 AM CST
SATURDAY...

* WHAT...Snow expected. Total snow accumulations of 3 to 5 
  inches.

* WHERE...Sawyer County. This includes the Tribal Lands of the 
  Lac Courte Oreilles Reservation.

* WHEN...From noon Friday to 9 AM CST Saturday.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions could impact the evening commute.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions can be obtained by calling 5 1 1. 
Road conditions can also be found at 511mn.org for Minnesota or
511wi.gov for Wisconsin.

&&

$$

WIZ003-004-006-007-100830-
/O.NEW.KDLH.WW.Y.0020.211210T1800Z-211211T1500Z/
Ashland-Iron-Burnett-Washburn-
Including the cities of Ashland, Hurley, Grantsburg, and Spooner
219 PM CST Thu Dec 9 2021

...WINTER WEATHER ADVISORY IN EFFECT FROM NOON FRIDAY TO 9 AM CST
SATURDAY...

* WHAT...Snow expected. Total snow accumulations of 3 to 5 
  inches, except up to one inch for northern Douglas and 
  Bayfield counties.

* WHERE...Ashland, Iron, Burnett and Washburn Counties. This 
  includes the Tribal Lands of the Bad River Reservation.

* WHEN...From noon Friday to 9 AM CST Saturday.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions could impact the evening commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions can be obtained by calling 5 1 1. 
Road conditions can also be found at 511mn.org for Minnesota or
511wi.gov for Wisconsin.

&&

$$

MNZ021-100400-
/O.CON.KDLH.WW.Y.0019.000000T0000Z-211210T0400Z/
Southern Cook-
Including the city of Grand Marais
219 PM CST Thu Dec 9 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 PM CST THIS
EVENING...

* WHAT...Snow. Additional snow accumulations of up to two inches.

* WHERE...Southern Cook County. This includes the Tribal Lands 
  of the Grand Portage Reservation.

* WHEN...Until 10 PM CST this evening.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions could impact the evening commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions can be obtained by calling 5 1 1. 
Road conditions can also be found at 511mn.org for Minnesota or
511wi.gov for Wisconsin.

&&

$$

For more information from the National Weather Service visit
http://weather.gov/Duluth
7 follow-up statements
372 
WWUS43 KDLH 100117
WSWDLH

URGENT - WINTER WEATHER MESSAGE
National Weather Service Duluth MN
717 PM CST Thu Dec 9 2021

MNZ021-100230-
/O.CAN.KDLH.WW.Y.0019.000000T0000Z-211210T0400Z/
Southern Cook-
Including the city of Grand Marais
717 PM CST Thu Dec 9 2021

...WINTER WEATHER ADVISORY IS CANCELLED...

Observation stations and webcams indicate that snow has largely 
come to an end over Cook County. Use caution if traveling as roads
may still be slippery and snow covered. 


$$

WIZ009-101330-
/O.CON.KDLH.WS.W.0006.211210T1800Z-211211T1500Z/
Price-
Including the city of Phillips
717 PM CST Thu Dec 9 2021

...WINTER STORM WARNING REMAINS IN EFFECT FROM NOON FRIDAY TO
9 AM CST SATURDAY...

* WHAT...Heavy snow expected. Total snow accumulations of 5 to 
  10 inches.

* WHERE...Price County.

* WHEN...From noon Friday to 9 AM CST Saturday.

* IMPACTS...Travel could be very difficult. The hazardous 
  conditions could impact the evening commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

The latest road conditions can be obtained by calling 5 1 1. 
Road conditions can also be found at 511mn.org for Minnesota or
511wi.gov for Wisconsin.

&&

$$

WIZ003-004-006>008-101330-
/O.CON.KDLH.WW.Y.0020.211210T1800Z-211211T1500Z/
Ashland-Iron-Burnett-Washburn-Sawyer-
Including the cities of Ashland, Hurley, Grantsburg, Spooner, 
and Hayward
717 PM CST Thu Dec 9 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM NOON FRIDAY TO
9 AM CST SATURDAY...

* WHAT...Snow expected. Total snow accumulations of 3 to 5 inches.

* WHERE...Sawyer, Iron, Burnett, Washburn and Ashland Counties. 
  This includes the Tribal Lands of the Lac Courte Oreilles 
  Reservation and the Bad River Reservation.

* WHEN...From noon Friday to 9 AM CST Saturday.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions could impact the evening commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions can be obtained by calling 5 1 1. 
Road conditions can also be found at 511mn.org for Minnesota or
511wi.gov for Wisconsin.

&&

$$

For more information from the National Weather Service visit
http://weather.gov/Duluth
428 
WWUS43 KDLH 100353
WSWDLH

URGENT - WINTER WEATHER MESSAGE
National Weather Service Duluth MN
953 PM CST Thu Dec 9 2021

WIZ009-101600-
/O.CON.KDLH.WS.W.0006.211210T1800Z-211211T1500Z/
Price-
Including the city of Phillips
953 PM CST Thu Dec 9 2021

...WINTER STORM WARNING REMAINS IN EFFECT FROM NOON FRIDAY TO
9 AM CST SATURDAY...

* WHAT...Heavy snow expected. Total snow accumulations of 7 to 
  11 inches.

* WHERE...Price County.

* WHEN...From noon Friday to 9 AM CST Saturday.

* IMPACTS...Travel could be very difficult. The hazardous 
  conditions could impact the evening commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

The latest road conditions can be obtained by calling 5 1 1. 
Road conditions can also be found at 511mn.org for Minnesota or
511wi.gov for Wisconsin.

&&

$$

WIZ003-004-006>008-101600-
/O.CON.KDLH.WW.Y.0020.211210T1800Z-211211T1500Z/
Ashland-Iron-Burnett-Washburn-Sawyer-
Including the cities of Ashland, Hurley, Grantsburg, Spooner, 
and Hayward
953 PM CST Thu Dec 9 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM NOON FRIDAY TO
9 AM CST SATURDAY...

* WHAT...Snow expected. Total snow accumulations of 2 to 7 inches.

* WHERE...Sawyer, Iron, Burnett, Washburn and Ashland Counties. 
  This includes the Tribal Lands of the Lac Courte Oreilles 
  Reservation and the Bad River Reservation.

* WHEN...From noon Friday to 9 AM CST Saturday.

* IMPACTS...Travel could be very difficult. The hazardous 
  conditions could impact the evening commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions can be obtained by calling 5 1 1. 
Road conditions can also be found at 511mn.org for Minnesota or
511wi.gov for Wisconsin.

&&

$$

For more information from the National Weather Service visit
http://weather.gov/Duluth
348 
WWUS43 KDLH 100909
WSWDLH

URGENT - WINTER WEATHER MESSAGE
National Weather Service Duluth MN
309 AM CST Fri Dec 10 2021

WIZ004-008-102115-
/O.UPG.KDLH.WW.Y.0020.211210T1800Z-211211T1500Z/
/O.EXA.KDLH.WS.W.0006.211210T1800Z-211211T1500Z/
Iron-Sawyer-
Including the cities of Hurley and Hayward
309 AM CST Fri Dec 10 2021

...WINTER STORM WARNING IN EFFECT FROM NOON TODAY TO 9 AM CST
SATURDAY...

* WHAT...Heavy snow expected. Total snow accumulations of 4 to 8
  inches, except 3 to 6 inches for northern Iron and Sawyer 
  county.

* WHERE...Iron and Sawyer Counties. This includes the Tribal 
  Lands of the Lac Courte Oreilles Reservation.

* WHEN...From noon today to 9 AM CST Saturday.

* IMPACTS...Travel could be very difficult. The hazardous 
  conditions could impact the evening commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

The latest road conditions can be obtained by calling 5 1 1. 
Road conditions for Wisconsin can also be found at 511wi.gov.

&&

$$

WIZ009-102115-
/O.CON.KDLH.WS.W.0006.211210T1800Z-211211T1500Z/
Price-
Including the city of Phillips
309 AM CST Fri Dec 10 2021

...WINTER STORM WARNING REMAINS IN EFFECT FROM NOON TODAY TO 9 AM
CST SATURDAY...

* WHAT...Heavy snow expected. Total snow accumulations of 7 to 
  11 inches.

* WHERE...Price County.

* WHEN...From noon today to 9 AM CST Saturday.

* IMPACTS...Travel could be very difficult. The hazardous 
  conditions could impact the evening commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

The latest road conditions can be obtained by calling 5 1 1. 
Road conditions for Wisconsin can also be found at 511wi.gov.

&&

$$

WIZ002-102115-
/O.EXA.KDLH.WW.Y.0020.211210T1800Z-211211T1500Z/
Bayfield-
Including the cities of Washburn and Bayfield
309 AM CST Fri Dec 10 2021

...WINTER WEATHER ADVISORY IN EFFECT FROM NOON TODAY TO 9 AM CST
SATURDAY...

* WHAT...Snow expected. Total snow accumulations of 2 to 4 
  inches.

* WHERE...Bayfield County. This includes the Tribal Lands of the 
  Red Cliff Band.

* WHEN...From noon today to 9 AM CST Saturday.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions could impact the evening commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions can be obtained by calling 5 1 1. 
Road conditions for Wisconsin can also be found at 511wi.gov.

&&

$$

WIZ003-006-007-102115-
/O.CON.KDLH.WW.Y.0020.211210T1800Z-211211T1500Z/
Ashland-Burnett-Washburn-
Including the cities of Ashland, Grantsburg, and Spooner
309 AM CST Fri Dec 10 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM NOON TODAY TO
9 AM CST SATURDAY...

* WHAT...Snow expected. Total snow accumulations of 2 to 5 inches,
  except 1 to 3 inches for northern Bayfield county.

* WHERE...Burnett, Washburn and Ashland Counties. This includes 
  the Tribal Lands of the Bad River Reservation.

* WHEN...From noon today to 9 AM CST Saturday.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions could impact the evening commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions can be obtained by calling 5 1 1. 
Road conditions for Wisconsin can also be found at 511wi.gov.

&&

$$

For more information from the National Weather Service visit
http://weather.gov/Duluth
710 
WWUS43 KDLH 102059
WSWDLH

URGENT - WINTER WEATHER MESSAGE
National Weather Service Duluth MN
259 PM CST Fri Dec 10 2021

WIZ004-008-009-110900-
/O.CON.KDLH.WS.W.0006.000000T0000Z-211211T1500Z/
Iron-Sawyer-Price-
Including the cities of Hurley, Hayward, and Phillips
259 PM CST Fri Dec 10 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 9 AM CST
SATURDAY...

* WHAT...Heavy snow. Additional snow accumulations of 8 to 12
  inches, except 3 to 7 inches for northern Iron and Sawyer 
  counties. 

* WHERE...Sawyer, Price and Iron Counties. This includes the 
  Tribal Lands of the Lac Courte Oreilles Reservation.

* WHEN...Until 9 AM CST Saturday.

* IMPACTS...Travel could be very difficult to impossible. The 
  hazardous conditions could impact the evening commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

The latest road conditions can be obtained by calling 5 1 1. 
Road conditions can also be found at 511mn.org for Minnesota or
511wi.gov for Wisconsin.

&&

$$

WIZ002-003-006-007-110900-
/O.CON.KDLH.WW.Y.0020.000000T0000Z-211211T1500Z/
Bayfield-Ashland-Burnett-Washburn-
Including the cities of Washburn, Bayfield, Ashland, Grantsburg, 
and Spooner
259 PM CST Fri Dec 10 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 AM CST
SATURDAY...

* WHAT...Snow. Additional snow accumulations of 3 to 7 inches,
  except up to two inches for northern Ashland, Bayfield,
  Washburn, and Burnett counties.

* WHERE...Burnett, Washburn, Bayfield and Ashland Counties. This 
  includes the Tribal Lands of the Red Cliff Band and the Bad 
  River Reservation.

* WHEN...Until 9 AM CST Saturday.

* IMPACTS...Travel could be very difficult. The hazardous 
  conditions could impact the evening commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions can be obtained by calling 5 1 1. 
Road conditions can also be found at 511mn.org for Minnesota or
511wi.gov for Wisconsin.

&&

$$

For more information from the National Weather Service visit
http://weather.gov/Duluth
104 
WWUS43 KDLH 110335
WSWDLH

URGENT - WINTER WEATHER MESSAGE
National Weather Service Duluth MN
935 PM CST Fri Dec 10 2021

WIZ004-008-009-111500-
/O.CON.KDLH.WS.W.0006.000000T0000Z-211211T1500Z/
Iron-Sawyer-Price-
Including the cities of Hurley, Hayward, and Phillips
935 PM CST Fri Dec 10 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 9 AM CST
SATURDAY...

* WHAT...Heavy snow. Additional snow accumulations of 8 to 12 
  inches, except 3 to 7 inches for northern Iron and Sawyer 
  counties.

* WHERE...Sawyer, Price and Iron Counties. This includes the 
  Tribal Lands of the Lac Courte Oreilles Reservation.

* WHEN...Until 9 AM CST Saturday.

* IMPACTS...Travel could be very difficult to impossible. The 
  hazardous conditions could impact the evening commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

The latest road conditions can be obtained by calling 5 1 1. 
Road conditions can also be found at 511mn.org for Minnesota or
511wi.gov for Wisconsin.

&&

$$

WIZ002-003-006-007-111500-
/O.CON.KDLH.WW.Y.0020.000000T0000Z-211211T1500Z/
Bayfield-Ashland-Burnett-Washburn-
Including the cities of Washburn, Bayfield, Ashland, Grantsburg, 
and Spooner
935 PM CST Fri Dec 10 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 AM CST
SATURDAY...

* WHAT...Snow. Additional snow accumulations of 3 to 7 inches, 
  except up to two inches for northern Ashland, Bayfield, 
  Washburn, and Burnett counties.

* WHERE...Burnett, Washburn, Bayfield and Ashland Counties. This 
  includes the Tribal Lands of the Red Cliff Band and the Bad 
  River Reservation.

* WHEN...Until 9 AM CST Saturday.

* IMPACTS...Travel could be very difficult. The hazardous 
  conditions could impact the evening commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions can be obtained by calling 5 1 1. 
Road conditions can also be found at 511mn.org for Minnesota or
511wi.gov for Wisconsin.

&&

$$

For more information from the National Weather Service visit
http://weather.gov/Duluth
719 
WWUS43 KDLH 111232
WSWDLH

URGENT - WINTER WEATHER MESSAGE
National Weather Service Duluth MN
632 AM CST Sat Dec 11 2021

WIZ002-006-007-111345-
/O.CAN.KDLH.WW.Y.0020.000000T0000Z-211211T1500Z/
Bayfield-Burnett-Washburn-
Including the cities of Washburn, Bayfield, Grantsburg, 
and Spooner
632 AM CST Sat Dec 11 2021

...WINTER WEATHER ADVISORY IS CANCELLED...

Snow has ended across Bayfield, Burnett and Washburn counties.

$$

WIZ004-008-009-111500-
/O.CON.KDLH.WS.W.0006.000000T0000Z-211211T1500Z/
Iron-Sawyer-Price-
Including the cities of Hurley, Hayward, and Phillips
632 AM CST Sat Dec 11 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 9 AM CST THIS
MORNING...

* WHAT...Snow. Additional snow accumulations of up to one inch.

* WHERE...Sawyer, Price and Iron Counties. This includes the 
  Tribal Lands of the Lac Courte Oreilles Reservation.

* WHEN...Until 9 AM CST this morning.

* IMPACTS...Plan on slippery road conditions.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

The latest road conditions can be obtained by calling 5 1 1. 
Road conditions can also be found at 511mn.org for Minnesota or
511wi.gov for Wisconsin.

&&

$$

WIZ003-111500-
/O.CON.KDLH.WW.Y.0020.000000T0000Z-211211T1500Z/
Ashland-
Including the city of Ashland
632 AM CST Sat Dec 11 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 AM CST THIS
MORNING...

* WHAT...Snow. Additional snow accumulations of up to one inch.

* WHERE...Ashland County. This includes the Tribal Lands of the 
  Bad River Reservation.

* WHEN...Until 9 AM CST this morning.

* IMPACTS...Plan on slippery road conditions.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions can be obtained by calling 5 1 1. 
Road conditions can also be found at 511mn.org for Minnesota or
511wi.gov for Wisconsin.

&&

$$

BJH

For more information from the National Weather Service visit
http://weather.gov/Duluth
125 
WWUS43 KDLH 111354
WSWDLH

URGENT - WINTER WEATHER MESSAGE
National Weather Service Duluth MN
754 AM CST Sat Dec 11 2021

WIZ004-008-009-111500-
/O.CAN.KDLH.WS.W.0006.000000T0000Z-211211T1500Z/
Iron-Sawyer-Price-
Including the cities of Hurley, Hayward, and Phillips
754 AM CST Sat Dec 11 2021

...WINTER STORM WARNING IS CANCELLED...

Accumulating snow has ended across the area.

$$

WIZ003-111500-
/O.CAN.KDLH.WW.Y.0020.000000T0000Z-211211T1500Z/
Ashland-
Including the city of Ashland
754 AM CST Sat Dec 11 2021

...WINTER WEATHER ADVISORY IS CANCELLED...

Accumulating snow has ended across the area.

$$

BJH

For more information from the National Weather Service visit
http://weather.gov/Duluth

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 9, 11:46 AM CST, 2 hours 33 minutes earlier.

Area forecast discussion, Dec 9, 11:46 AM CST, 2 hours 33 minutes before
Area Forecast Discussion
National Weather Service Duluth MN
1146 AM CST Thu Dec 9 2021

.DISCUSSION...(This afternoon through Wednesday)
Issued at 646 AM CST Thu Dec 9 2021

Summary...An active week of weather is expected. A shortwave
moving across the area today will bring light snow to the area
through this evening. Heavier snow due to lake effect/enhancements
should continue to affect southern Cook county this morning.
Attention then turns to a stronger system for Friday through
Saturday, which has the potential to produce significant snowfall
for parts of northwest Wisconsin. The weather quiets down through
early next week, but with potential for another winter storm
system for the middle part of next week.

The shortwave we have been monitoring is in the process of moving
across the area this morning, and is expected to continue to move
through the area today. The south flow across Lake Superior is
expected to produce lake effects or at least enhancement for
higher snowfall totals along the North Shore, predominantly for
the southern Cook zone. There will be some enhancements farther
south along the North Shore and farther inland as well, but I
expect the highest snowfall totals for the southern Cook zone,
where 3 to 6 inches are possible. We have a lot of radar returns
around the area right now, but we are only seeing ground truth for
the band that is draped across the Iron Range and east out over
the lake, though this is just in the last few hours. Considering
the significant dry layers on the 00z KINL and KGRB soundings we
have had some saturation issues with the relatively dry air at the
lowest levels that has had to be overcome overnight. Now that the
snow is beginning to reach the ground, I expect accumulations to
start piling up along the North Shore for the next few hours.

Attention now turns to the system for Friday through Saturday,
which we have been watching for a few days now. As compared to
yesterday, the track has shifted back north again, and now we are
looking at plowable snowfall amounts once again for parts of
northwest Wisconsin. We will be on the north side of this system,
so we do not have any precipitation type issues, and all snow
should fall across northern Wisconsin counties. Snowfall amounts
have crept back up over 6 inches for much of Price county with
lighter amounts to the north, with little if any snow expected
around the Twin Ports. The strong surface low starts out Friday
morning over eastern Colorado, rolling east along the mid level
baroclinic zone, moving across Iowa by Friday evening, then
northeast across northern lower Michigan by Saturday morning. The
models have come to a fairly good consensus on this, so we have
increasing confidence on the potential for significant snowfall,
so a Winter Storm Watch has been issued for parts of northwest
Wisconsin.

After another round of cold temperatures for Friday and Saturday
nights, there should be a gradual warm-up through mid week. Am
concerned that the current NBM values are too warm during this
time range, given our recent snowfall, despite the strong warm air
advection aloft. I anticipate needing to lower these values as we
get closer in time to them.

The models are indicating another potential for a winter storm in
the Wednesday-Thursday time range. However, there are a lot of
differences between the models, and we are going to have to wait
and see for the details on this system.

&&

.AVIATION...(For the 18Z TAFS through 18Z Friday afternoon)
Issued at 1146 AM CST Thu Dec 9 2021

Low pressure will cause a messy weather pattern across the area
today with a variety of flight categories. Snow showers will
temporarily reduce vsbys in HYR to LIFR within the next hour. Model
guidance has an MVFR stratus deck propagating through this
afternoon. There are hints of embedded IFR cigs within that stratus
deck, but these IFR cigs appear to be sporadic. HIB and INL would be
the most likely to see any IFR cigs this afternoon, but confidence
wasn't high enough to reduce category at this time. As the low
pressure exits the area, expect conditions to improve to VFR and
remain VFR tonight and into tomorrow morning.

&&

.MARINE...
Issued at 1046 AM CST Thu Dec 9 2021

Winds are out of the south at 10 to 15 knots with gusts to near
25 knots with isolated 30 to 35 knot winds. Holding off on a Gale
Warning at the moment as it is thought that the winds are transient
in nature and will decreasing within the next hour or two. By
this evening winds will switch around to the southwest at 15 to
20 knots with gusts to 25 knots. A Small Craft Advisory is in
effect until tomorrow morning for Grand Portage to Silver Bay and
Port Wing eastward to Saxon Harbor. Winds are expected to switch
to the west late this evening and decrease towards morning.

&&

.PRELIMINARY POINT TEMPS/POPS...
DLH  30  15  29  16 /  70   0  20  30
INL  28  12  27   7 /  40   0   0   0
BRD  33  16  30  15 /  20   0  20  20
HYR  31  14  31  18 /  70   0  60  80
ASX  32  16  31  22 /  80   0  50  70

&&

.DLH WATCHES/WARNINGS/ADVISORIES...
WI...Winter Storm Watch from Friday afternoon through Saturday
     morning for WIZ008-009.

MN...Winter Weather Advisory until 10 PM CST this evening for MNZ021.

LS...Small Craft Advisory until 4 AM CST Friday for LSZ140>142-146-
     147-150.

     Small Craft Advisory from 8 PM this evening to 3 AM CST Friday
     for LSZ143.

     Small Craft Advisory until 4 PM CST this afternoon for LSZ148.

&&

DISCUSSION...LE
AVIATION...Unruh
MARINE...KSE
Hazardous weather outlook, Dec 9, 5:17 AM CST, 9 hours 2 minutes before
Hazardous Weather Outlook
National Weather Service Duluth MN
517 AM CST Thu Dec 9 2021

MNZ012-021-101130-
Northern Cook/Northern Lake-Southern Cook/North Shore-
517 AM CST Thu Dec 9 2021

This Hazardous Weather Outlook is for portions of northeast
Minnesota.

.DAY ONE...Today and Tonight

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.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

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

MNZ010-011-018>020-025-026-033>038-WIZ001>004-006>009-101130-
Koochiching-North St. Louis-North Itasca-Central St. Louis-
Southern Lake/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-
517 AM CST Thu Dec 9 2021

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

.DAY ONE...Today and Tonight

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

A storm system is forecast to move through the region Friday
afternoon into Saturday. Confidence in accumulating snow is
increasing for parts of northwest Wisconsin especially across
Price, Sawyer, Ashland and Iron counties. A Winter Storm Watch has
been issued for part of northwest Wisconsin.

.SPOTTER INFORMATION STATEMENT...

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

LSZ121-140>148-150-101130-
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-
517 AM CST Thu Dec 9 2021

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

.DAY ONE...Today and Tonight

Gusty south to southwest winds will continue today and tonight and
produce hazardous conditions for small craft along parts of the
North and South Shores. Small Craft Advisories remain in effect
into tonight.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

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

BJH

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

In the hours before

Local storm report, Dec 9, 11:30 AM CST, 2 hours 49 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DULUTH MN
1130 AM CST THU DEC 9 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1123 AM     SNOW             4 W GRAND MARAIS        47.75N 90.44W
12/09/2021  E4.0 INCH        COOK               MN   TRAINED SPOTTER

            PHOTO SENT IN VIA SOCIAL MEDIA SHOWING
            APPROXIMATELY 4 INCHES OF SNOW.

&&

WFU
Local storm report, Dec 9, 12:50 PM CST, 1 hour 29 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DULUTH MN
1250 PM CST THU DEC 9 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1120 AM     SNOW             ODANAH                  46.60N 90.68W
12/09/2021  M1.5 INCH        ASHLAND            WI   TRAINED SPOTTER

            HEAVY SNOW WAS STILL FALLING AT THE TIME OF
            THE REPORT.

&&

WFU
Local storm report, Dec 9, 2:07 PM CST, 12 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DULUTH MN
207 PM CST THU DEC 9 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0206 PM     SNOW             4 WSW GRAND MARAIS      47.73N 90.42W
12/09/2021  M4.0 INCH        LSZ141             MN   TRAINED SPOTTER

            SNOW WAS STILL FALLING AT THE TIME OF THE
            REPORT.

&&

WFU

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 9, 3:39 AM CSTWinter Storm WatchDLHPrice, Sawyer11 hr
Dec 9, 2:19 PM CSTWinter Weather AdvisoryDLHAshland, Bayfield, Burnett, Iron, Sawyer, Washburn42 hr

Nearby

Winter Storm Warnings in Wisconsin, 2021Every winter storm warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.