Alert archive / Wisconsin / Wind Chill Advisories in 2021

Wind Chill Advisory 4, NWS Milwaukee, WI

February 12, 20218 counties in Wisconsin

NWS Milwaukee, WI issued this wind chill advisory at Feb 12, 2021, 2:00 PM CST for 8 counties in Wisconsin. It took effect at Feb 12, 2021, 9:00 PM CST. It was in force for 15 hr.

The area

The counties it named.

The facts

Issued
Feb 12, 2021, 2:00 PM CST (20:00 UTC)
In effect from
Feb 12, 2021, 9:00 PM CST
Expired
Feb 13, 2021, 12:00 PM CST
In force
15 hr
Issued by
NWS Milwaukee, WI

Counties Columbia County, WI, Dane County, WI, Green County, WI, Green Lake County, WI, Iowa County, WI, Lafayette County, WI, Marquette County, WI, Sauk County, WI

The radar

The Milwaukee radar (KMKX), 92 km from the middle of the area, began a volume at 20:02 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 12:00Z, 8.0 hours before the alert went out and 184 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 2021-02-12Temperature 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°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 2021-02-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 71 square meters per square second.1939587897117136156175Sfc1 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
724 m above ground
0-6 km bulk shear
112 kt
0-1 km storm-relative helicity
71 m²/s²
0-3 km storm-relative helicity
273 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

881 
WWUS43 KMKX 122000
WSWMKX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Milwaukee/Sullivan WI
200 PM CST Fri Feb 12 2021

WIZ046-047-056-057-062-063-067-068-130400-
/O.NEW.KMKX.WC.Y.0004.210213T0300Z-210213T1800Z/
Marquette-Green Lake-Sauk-Columbia-Iowa-Dane-Lafayette-Green-
Including the cities of Montello, Westfield, Oxford, Neshkoro, 
Endeavor, Berlin, Princeton, Markesan, Baraboo, Reedsburg, 
Prairie Du Sac, Sauk City, Portage, Columbus, Lake Wisconsin, 
Lodi, Dodgeville, Mineral Point, Barneveld, Madison, Darlington, 
Shullsburg, Benton, Belmont, Argyle, Blanchardville, Monroe, 
and Brodhead
200 PM CST Fri Feb 12 2021

...WIND CHILL ADVISORY IN EFFECT FROM 9 PM THIS EVENING TO NOON
CST SATURDAY...

* WHAT...Very cold wind chills expected. Wind chills as low as 
  25 below zero.

* WHERE...Portions of south central Wisconsin.

* WHEN...From 9 PM this evening to noon CST Saturday.

* IMPACTS...The cold wind chills could cause frostbite on 
  exposed skin in as little as 30 minutes.



PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use caution while traveling outside. Wear appropriate clothing, a
hat, and gloves. 

&&

$$
3 follow-up statements
140 
WWUS43 KMKX 130247
WSWMKX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Milwaukee/Sullivan WI
847 PM CST Fri Feb 12 2021

WIZ046-047-056-057-062-063-067-068-131100-
/O.CON.KMKX.WC.Y.0004.210213T0300Z-210213T1800Z/
Marquette-Green Lake-Sauk-Columbia-Iowa-Dane-Lafayette-Green-
Including the cities of Montello, Westfield, Oxford, Neshkoro, 
Endeavor, Berlin, Princeton, Markesan, Baraboo, Reedsburg, 
Prairie Du Sac, Sauk City, Portage, Columbus, Lake Wisconsin, 
Lodi, Dodgeville, Mineral Point, Barneveld, Madison, Darlington, 
Shullsburg, Benton, Belmont, Argyle, Blanchardville, Monroe, 
and Brodhead
847 PM CST Fri Feb 12 2021

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL NOON CST
SATURDAY...

* WHAT...Very cold wind chills expected. Wind chills as low as 
  25 below zero.

* WHERE...Portions of south central Wisconsin.

* WHEN...From 9 PM this evening to noon CST Saturday.

* IMPACTS...The cold wind chills could cause frostbite on 
  exposed skin in as little as 30 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use caution while traveling outside. Wear appropriate clothing, a
hat, and gloves. 

&&

$$
Wood
493 
WWUS43 KMKX 130821
WSWMKX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Milwaukee/Sullivan WI
221 AM CST Sat Feb 13 2021

WIZ046-047-056-057-062-063-067-068-131630-
/O.NEW.KMKX.WC.Y.0005.210214T0100Z-210214T1800Z/
/O.CON.KMKX.WC.Y.0004.000000T0000Z-210213T1800Z/
Marquette-Green Lake-Sauk-Columbia-Iowa-Dane-Lafayette-Green-
Including the cities of Montello, Westfield, Oxford, Neshkoro, 
Endeavor, Berlin, Princeton, Markesan, Baraboo, Reedsburg, 
Prairie Du Sac, Sauk City, Portage, Columbus, Lake Wisconsin, 
Lodi, Dodgeville, Mineral Point, Barneveld, Madison, Darlington, 
Shullsburg, Benton, Belmont, Argyle, Blanchardville, Monroe, 
and Brodhead
221 AM CST Sat Feb 13 2021

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL NOON CST TODAY...
...WIND CHILL ADVISORY IN EFFECT FROM 7 PM THIS EVENING TO NOON
CST SUNDAY...

* WHAT...For the first Wind Chill Advisory, very cold wind chills.
  Wind chills as low as 25 below zero. For the second Wind Chill
  Advisory, very cold wind chills expected. Wind chills between
  -30 and -35 expected.

* WHERE...Portions of south central Wisconsin.

* WHEN...For the first Wind Chill Advisory, until noon CST 
  today. For the second Wind Chill Advisory, from 7 PM this 
  evening to noon CST Sunday.

* IMPACTS...The dangerously cold wind chills could cause frostbite
  on exposed skin in as little as 10 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use caution while traveling outside. Wear appropriate clothing, a
hat, and gloves. 

&&

$$

WIZ051-052-058>060-064>066-069>072-131630-
/O.NEW.KMKX.WC.Y.0005.210214T0100Z-210214T1800Z/
Fond du Lac-Sheboygan-Dodge-Washington-Ozaukee-Jefferson-Waukesha-
Milwaukee-Rock-Walworth-Racine-Kenosha-
Including the cities of Fond Du Lac, Plymouth, Sheboygan Falls, 
Howards Grove, Oostburg, Beaver Dam, Waupun, Mayville, West Bend,
Germantown, Hartford, Mequon, Cedarburg, Grafton, Watertown, 
Fort Atkinson, Jefferson, Waukesha, Brookfield, New Berlin, 
Menomonee Falls, Muskego, Milwaukee, Janesville, Beloit, 
Whitewater, Delavan, Elkhorn, Lake Geneva, East Troy, Racine, 
and Kenosha
221 AM CST Sat Feb 13 2021

...WIND CHILL ADVISORY IN EFFECT FROM 7 PM THIS EVENING TO NOON
CST SUNDAY...

* WHAT...Very cold wind chills expected. Wind chills between -30
  and -35 expected.

* WHERE...Portions of east central, south central and southeast 
  Wisconsin.

* WHEN...From 7 PM this evening to noon CST Sunday.

* IMPACTS...The dangerously cold wind chills could cause frostbite
  on exposed skin in as little as 10 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use caution while traveling outside. Wear appropriate clothing, a
hat, and gloves. 

&&

$$
780 
WWUS43 KMKX 131758
WSWMKX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Milwaukee/Sullivan WI
1158 AM CST Sat Feb 13 2021

WIZ046-047-056-057-062-063-067-068-140200-
/O.EXP.KMKX.WC.Y.0004.000000T0000Z-210213T1800Z/
/O.CON.KMKX.WC.Y.0005.210214T0100Z-210214T1800Z/
Marquette-Green Lake-Sauk-Columbia-Iowa-Dane-Lafayette-Green-
Including the cities of Montello, Westfield, Oxford, Neshkoro, 
Endeavor, Berlin, Princeton, Markesan, Baraboo, Reedsburg, 
Prairie Du Sac, Sauk City, Portage, Columbus, Lake Wisconsin, 
Lodi, Dodgeville, Mineral Point, Barneveld, Madison, Darlington, 
Shullsburg, Benton, Belmont, Argyle, Blanchardville, Monroe, 
and Brodhead
1158 AM CST Sat Feb 13 2021

...WIND CHILL ADVISORY REMAINS IN EFFECT FROM 7 PM THIS EVENING
TO NOON CST SUNDAY...
...WIND CHILL ADVISORY WILL EXPIRE AT NOON CST TODAY...

* WHAT...Very cold wind chills expected. Wind chills between 30
  and 35 below zero.

* WHERE...Portions of south central Wisconsin.

* WHEN...From 7 PM this evening to noon CST Sunday.

* IMPACTS...The dangerously cold wind chills could cause 
  frostbite on exposed skin in as little as 10 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use caution while traveling outside. Wear appropriate clothing, a
hat, and gloves. 

&&

$$

WIZ051-052-058>060-064>066-069>072-140200-
/O.CON.KMKX.WC.Y.0005.210214T0100Z-210214T1800Z/
Fond du Lac-Sheboygan-Dodge-Washington-Ozaukee-Jefferson-Waukesha-
Milwaukee-Rock-Walworth-Racine-Kenosha-
Including the cities of Fond Du Lac, Plymouth, Sheboygan Falls, 
Howards Grove, Oostburg, Beaver Dam, Waupun, Mayville, West Bend,
Germantown, Hartford, Mequon, Cedarburg, Grafton, Watertown, 
Fort Atkinson, Jefferson, Waukesha, Brookfield, New Berlin, 
Menomonee Falls, Muskego, Milwaukee, Janesville, Beloit, 
Whitewater, Delavan, Elkhorn, Lake Geneva, East Troy, Racine, 
and Kenosha
1158 AM CST Sat Feb 13 2021

...WIND CHILL ADVISORY REMAINS IN EFFECT FROM 7 PM THIS EVENING
TO NOON CST SUNDAY...

* WHAT...Very cold wind chills expected. Wind chills between 30
  and 35 below zero.

* WHERE...Portions of east central, south central and southeast 
  Wisconsin.

* WHEN...From 7 PM this evening to noon CST Sunday.

* IMPACTS...The dangerously cold wind chills could cause 
  frostbite on exposed skin in as little as 10 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use caution while traveling outside. Wear appropriate clothing, a
hat, and gloves. 

&&

$$

Nearby

Wind Chill Advisories in Wisconsin, 2021Every wind chill advisory 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.