Alert archive / Wisconsin / Wind Chill Advisories in 2020

Wind Chill Advisory 1, NWS Milwaukee, WI

January 18, 20209 counties in Wisconsin

NWS Milwaukee, WI issued this wind chill advisory at Jan 18, 2020, 3:10 PM CST for 9 counties in Wisconsin. It took effect at Jan 18, 2020, 6:00 PM CST. It was in force for 16 hr.

The area

The counties it named.

The facts

Issued
Jan 18, 2020, 3:10 PM CST (21:10 UTC)
In effect from
Jan 18, 2020, 6:00 PM CST
Expired
Jan 19, 2020, 9:48 AM CST
In force
16 hr
Issued by
NWS Milwaukee, WI

Counties Columbia County, WI, Dane County, WI, Green County, WI, Iowa County, WI, Jefferson County, WI, Lafayette County, WI, Rock County, WI, Sauk County, WI, Walworth County, WI

The radar

The Milwaukee radar (KMKX), 72 km from the middle of the area, began a volume at 21:10 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

Davenport, (KDVN), launched 12:00Z, 9.2 hours before the alert went out and 173 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, Davenport, at 12:00Z on 2020-01-18Temperature 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, Davenport, at 12:00Z on 2020-01-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -64 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
541 m above ground
0-6 km bulk shear
98 kt
0-1 km storm-relative helicity
-64 m²/s²
0-3 km storm-relative helicity
388 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

243 
WWUS43 KMKX 182110
WSWMKX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Milwaukee/Sullivan WI
310 PM CST Sat Jan 18 2020

...Scattered Snow Showers and Gusty Winds This Afternoon...
...Bitterly Cold Tonight Into Sunday Morning...

WIZ056-057-062-063-067>069-190515-
/O.NEW.KMKX.WC.Y.0001.200119T0000Z-200119T1800Z/
/O.CON.KMKX.WW.Y.0003.000000T0000Z-200119T0000Z/
Sauk-Columbia-Iowa-Dane-Lafayette-Green-Rock-
Including the cities of Baraboo, Reedsburg, Prairie Du Sac, 
Sauk City, Portage, Columbus, Lake Wisconsin, Lodi, Dodgeville, 
Mineral Point, Barneveld, Madison, Darlington, Shullsburg, 
Benton, Belmont, Argyle, Blanchardville, Monroe, Brodhead, 
Janesville, and Beloit
310 PM CST Sat Jan 18 2020

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST THIS
EVENING...
...WIND CHILL ADVISORY IN EFFECT UNTIL NOON CST SUNDAY...

* WHAT...For the Winter Weather Advisory, scattered light snow
  showers will persist through the evening. A dusting of
  additional snow is possible. West winds gusting as high as 40
  mph will cause some blowing and drifting of snow. For the Wind 
  Chill Advisory, very cold wind chills expected. Wind chills as 
  low as 20 below zero.

* WHERE...Portions of south central Wisconsin.

* WHEN...For the Winter Weather Advisory, until 6 PM CST this
  evening. For the Wind Chill Advisory, 6 PM until noon CST 
  Sunday.

* IMPACTS...Blowing and drifting of snow may continue to bring
  travel impacts to the area into the evening. North- south
  oriented roads will be most affected. The cold wind chills could
  cause frostbite on exposed skin in as little as 30 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

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

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WIZ064-070-190515-
/O.NEW.KMKX.WC.Y.0001.200119T0000Z-200119T1800Z/
/O.CON.KMKX.WW.Y.0003.000000T0000Z-200119T0000Z/
Jefferson-Walworth-
Including the cities of Watertown, Fort Atkinson, Jefferson, 
Whitewater, Delavan, Elkhorn, Lake Geneva, and East Troy
310 PM CST Sat Jan 18 2020

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST THIS
EVENING...
...WIND CHILL ADVISORY IN EFFECT UNTIL NOON CST SUNDAY...

* WHAT...For the Winter Weather Advisory, scattered light snow
  showers will persist through the evening. A dusting of
  additional snow is possible. West winds gusting as high as 40
  mph will cause some blowing and drifting of snow. For the Wind 
  Chill Advisory, very cold wind chills expected. Wind chills as 
  low as 20 below zero.

* WHERE...Jefferson and Walworth Counties.

* WHEN...For the Winter Weather Advisory, until 6 PM CST this
  evening. For the Wind Chill Advisory, 6 PM until noon CST 
  Sunday.

* IMPACTS...Blowing and drifting of snow may continue to bring
  travel impacts to the area into the evening. North- south
  oriented roads will be most affected. The cold wind chills could
  cause frostbite on exposed skin in as little as 30 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

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

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WIZ046-047-190000-
/O.CON.KMKX.WW.Y.0003.000000T0000Z-200119T0000Z/
Marquette-Green Lake-
Including the cities of Montello, Westfield, Oxford, Neshkoro, 
Endeavor, Berlin, Princeton, and Markesan
310 PM CST Sat Jan 18 2020

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST THIS
EVENING...

* WHAT...Scattered light snow showers will persist through the
  evening. A dusting of additional snow is possible. West winds
  gusting as high as 35 mph will cause some blowing and drifting 
  of snow. 

* WHERE...Marquette and Green Lake Counties.

* WHEN...Until 6 PM CST this evening.

* IMPACTS...Blowing and drifting of snow may continue to bring
  travel impacts to the area into the evening. North- south
  oriented roads will be most affected. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WIZ051-052-058>060-065-066-071-072-190000-
/O.CON.KMKX.WW.Y.0003.000000T0000Z-200119T0000Z/
Fond du Lac-Sheboygan-Dodge-Washington-Ozaukee-Waukesha-Milwaukee-
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, Waukesha, 
Brookfield, New Berlin, Menomonee Falls, Muskego, Milwaukee, 
Racine, and Kenosha
310 PM CST Sat Jan 18 2020

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST THIS
EVENING...

* WHAT...Scattered light snow showers will persist through the
  evening. A dusting of additional snow is possible. West winds
  gusting as high as 35 mph will cause some blowing and drifting 
  of snow. 

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

* WHEN...Until 6 PM CST this evening.

* IMPACTS...Blowing and drifting of snow may continue to bring
  travel impacts to the area into the evening. North- south
  oriented roads will be most affected. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

MRC
4 follow-up statements
129 
WWUS43 KMKX 182351
WSWMKX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Milwaukee/Sullivan WI
551 PM CST Sat Jan 18 2020

...Bitterly Cold Tonight Into Sunday Morning...

WIZ056-057-062-063-067>069-190800-
/O.EXP.KMKX.WW.Y.0003.000000T0000Z-200119T0000Z/
/O.CON.KMKX.WC.Y.0001.200119T0000Z-200119T1800Z/
Sauk-Columbia-Iowa-Dane-Lafayette-Green-Rock-
Including the cities of Baraboo, Reedsburg, Prairie Du Sac, 
Sauk City, Portage, Columbus, Lake Wisconsin, Lodi, Dodgeville, 
Mineral Point, Barneveld, Madison, Darlington, Shullsburg, 
Benton, Belmont, Argyle, Blanchardville, Monroe, Brodhead, 
Janesville, and Beloit
551 PM CST Sat Jan 18 2020

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL NOON CST SUNDAY...
...WINTER WEATHER ADVISORY WILL EXPIRE AT 6 PM CST THIS EVENING...

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

* WHERE...Portions of south central Wisconsin.

* WHEN...Until noon CST Sunday.

* 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. 

&&

$$

WIZ064-070-190800-
/O.EXP.KMKX.WW.Y.0003.000000T0000Z-200119T0000Z/
/O.CON.KMKX.WC.Y.0001.200119T0000Z-200119T1800Z/
Jefferson-Walworth-
Including the cities of Watertown, Fort Atkinson, Jefferson, 
Whitewater, Delavan, Elkhorn, Lake Geneva, and East Troy
551 PM CST Sat Jan 18 2020

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL NOON CST SUNDAY...
...WINTER WEATHER ADVISORY WILL EXPIRE AT 6 PM CST THIS EVENING...

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

* WHERE...Jefferson and Walworth Counties.

* WHEN...Until noon CST Sunday.

* 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. 

&&

$$

WIZ046-047-190100-
/O.EXP.KMKX.WW.Y.0003.000000T0000Z-200119T0000Z/
Marquette-Green Lake-
Including the cities of Montello, Westfield, Oxford, Neshkoro, 
Endeavor, Berlin, Princeton, and Markesan
551 PM CST Sat Jan 18 2020

...WINTER WEATHER ADVISORY WILL EXPIRE AT 6 PM CST THIS EVENING...

Lingering light snow and freezing drizzle remain possible through
the evening but the widespread hazardous winter weather has ended. 

$$

WIZ051-052-058>060-065-066-071-072-190100-
/O.EXP.KMKX.WW.Y.0003.000000T0000Z-200119T0000Z/
Fond du Lac-Sheboygan-Dodge-Washington-Ozaukee-Waukesha-Milwaukee-
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, Waukesha, 
Brookfield, New Berlin, Menomonee Falls, Muskego, Milwaukee, 
Racine, and Kenosha
551 PM CST Sat Jan 18 2020

...WINTER WEATHER ADVISORY WILL EXPIRE AT 6 PM CST THIS EVENING...

Lingering light snow and freezing drizzle remain possible through
the evening but the widespread hazardous winter weather has ended.

$$
354 
WWUS43 KMKX 190246
WSWMKX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Milwaukee/Sullivan WI
846 PM CST Sat Jan 18 2020

...Bitterly Cold Tonight Into Sunday Morning...

WIZ056-057-062>064-067>070-191200-
/O.CON.KMKX.WC.Y.0001.000000T0000Z-200119T1800Z/
Sauk-Columbia-Iowa-Dane-Jefferson-Lafayette-Green-Rock-Walworth-
Including the cities of Baraboo, Reedsburg, Prairie Du Sac, 
Sauk City, Portage, Columbus, Lake Wisconsin, Lodi, Dodgeville, 
Mineral Point, Barneveld, Madison, Watertown, Fort Atkinson, 
Jefferson, Darlington, Shullsburg, Benton, Belmont, Argyle, 
Blanchardville, Monroe, Brodhead, Janesville, Beloit, Whitewater,
Delavan, Elkhorn, Lake Geneva, and East Troy
846 PM CST Sat Jan 18 2020

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

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

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

* WHEN...Until noon CST Sunday.

* 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. 

&&

$$
703 
WWUS43 KMKX 190837
WSWMKX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Milwaukee/Sullivan WI
237 AM CST Sun Jan 19 2020

...Bitterly Cold This Morning...

WIZ056-057-062>064-067>070-191645-
/O.CON.KMKX.WC.Y.0001.000000T0000Z-200119T1800Z/
Sauk-Columbia-Iowa-Dane-Jefferson-Lafayette-Green-Rock-Walworth-
Including the cities of Baraboo, Reedsburg, Prairie Du Sac, 
Sauk City, Portage, Columbus, Lake Wisconsin, Lodi, Dodgeville, 
Mineral Point, Barneveld, Madison, Watertown, Fort Atkinson, 
Jefferson, Darlington, Shullsburg, Benton, Belmont, Argyle, 
Blanchardville, Monroe, Brodhead, Janesville, Beloit, Whitewater,
Delavan, Elkhorn, Lake Geneva, and East Troy
237 AM CST Sun Jan 19 2020

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

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

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

* WHEN...Until noon CST Sunday.

* 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.

&&

$$
260 
WWUS43 KMKX 191548
WSWMKX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Milwaukee/Sullivan WI
948 AM CST Sun Jan 19 2020

...WIND CHILL ADVISORY IS CANCELLED...

WIZ056-057-062>064-067>070-191700-
/O.CAN.KMKX.WC.Y.0001.000000T0000Z-200119T1800Z/
Sauk-Columbia-Iowa-Dane-Jefferson-Lafayette-Green-Rock-Walworth-
Including the cities of Baraboo, Reedsburg, Prairie Du Sac, 
Sauk City, Portage, Columbus, Lake Wisconsin, Lodi, Dodgeville, 
Mineral Point, Barneveld, Madison, Watertown, Fort Atkinson, 
Jefferson, Darlington, Shullsburg, Benton, Belmont, Argyle, 
Blanchardville, Monroe, Brodhead, Janesville, Beloit, Whitewater,
Delavan, Elkhorn, Lake Geneva, and East Troy
948 AM CST Sun Jan 19 2020

...WIND CHILL ADVISORY IS CANCELLED...

Wind Chill values have risen above -20 and are no longer within
advisory criteria.

$$

CM

What forecasters said that day

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

NWS Milwaukee, WI wrote its last area forecast discussion before this wind chill advisory went out at Jan 18, 12:13 PM CST, 2 hours 57 minutes earlier.

Area forecast discussion, Jan 18, 12:13 PM CST, 2 hours 57 minutes before
Area Forecast Discussion...UPDATED
National Weather Service Milwaukee/Sullivan WI
1213 PM CST Sat Jan 18 2020

.UPDATE...

Snow showers ended temporarily for southern WI. Winds are
increasing out of the west as the low moves into northern Lake
Michigan. The arctic front is just moving into western WI now and
features light snow showers, blustery winds, and falling
temperatures. That will make its way across southern WI this
afternoon. Highest winds will arrive behind it, so late afternoon
into the evening. The colder temp profile will be within the
dendritic growth zone through much of the evening, so we extended
the scattered snow showers and flurries.

&&

.AVIATION(18Z TAFS)...

Ceilings will generally be MVFR between 1500 and 2500 ft across
all of southern WI this afternoon. Ceilings will probably rise
above 2000 ft by the evening, but there is still uncertainty.
There is a lull in the snow showers while winds start increasing
out of the west. The real gusty winds will arrive with the arctic
front which will track across southern WI through late afternoon.
Light snow showers are expected along and behind this front
through the evening, with flurries possibly lingering overnight.
MVFR ceilings should persist through Sunday morning and then lift
to VFR.

&&

.PREV DISCUSSION... (Issued 944 AM CST Sat Jan 18 2020)

UPDATE...

The latest round of snow showers added another inch to the snow
totals this morning. Scattered snow showers will persist through
late morning across southern WI but we will see a diminishing
trend in intensity. Winds are on track to ramp up out of the west
around the noon hour, give or take an hour. The arctic front will
arrive during the mid afternoon. It is currently over the Twin
Cities and Rochester and still features light snow. We should see
scattered light snow showers behind the front this afternoon and
evening, and then possible flurries until the drier air eventually
moves in Sunday morning.

We will need a Wind Chill Advisory for tonight, but will issue
that this afternoon to get a better idea of which counties to
include and not include (portions of eastern WI).

MARINE...

The gale warning for the north third expired at 9 am. Gusty west
winds developing this afternoon should remain just below gale
force for that area. There is a brief lull in the gales over the
south 2/3 right now as the low moves overhead, but west gales will
ensue around midday and really ramp up late this afternoon as the
arctic front arrives. Heavy freezing spray will result.

PREV DISCUSSION... (Issued 535 AM CST Sat Jan 18 2020)

UPDATE...

Some light freezing drizzle and light snow will linger over the
area for the next hour or so. The next batch of snow is moving
east northeast toward the area. This is associated with a potent
500 mb shortwave trough moving through the region. A period of
light to moderate snow is expected between 12Z and 17Z or so this
morning.

There are indications from the mesoscale models that a period of
moderate snow, perhaps with convective snow, will occur with this
feature. There is some weak middle level instability in the RAP
forecast soundings across the area.

Thus, a quick 1 to 2 inches of additional snowfall may occur
through the morning hours. Some light ice accumulations may also
occur on top of the snow that has already fallen. Thus, travel
impacts will continue into this morning.

The Lakeshore Flood Advisory will continue until 9 AM CST this
morning for Sheboygan and Ozaukee Counties. Gusty southeast winds
should gradually weaken and become south this morning, which will
result in reduced wave action on shoreline areas. Localized
flooding near the shoreline, and erosion, remains possible until
middle morning.

AVIATION(12Z TAFS)...

First wave of wintry mix of light freezing rain, freezing drizzle
and snow with IFR/LIFR ceilings and visibility values are moving
east of the area. A period of light freezing drizzle and light
snow then is then expected to linger over the area for the next
hour or two.

A period of snow is then expected to move east northeast through
the area between 6 AM and 11 AM this morning, with a quick 1 to 2
inches possible. Ceilings and visibility values should be
IFR/LIFR category once again, with 1/2 mile visibility and 1/2
inch per hour snowfall rates possible within heavier snow showers.
The snow should move east of the area around noon.

Gusty southeast winds should weaken and become south to southwest
during the morning. Winds will become gusty out of the west by
midday and continue this afternoon and tonight. Some blowing and
drifting snow is expected this afternoon and tonight, though
visibility values should remain MVFR category or greater. Low
clouds may linger this afternoon and tonight, with a few flurries
possible.

PREV DISCUSSION... (Issued 506 AM CST Sat Jan 18 2020)

SHORT TERM...

Today And Tonight...Forecast Confidence Is High.

First batch of mixed precipitation with focused warm air
advection is exiting south central Wisconsin and will linger in
southeast and east central areas for another couple of hours. Loss
of ice crystals is allowing for a wintry mix of light freezing
rain, freezing drizzle and snow to occur.

There will be a couple of hours of light freezing drizzle and
light snow after this first main area of precipitation moves out
of the area. There will then be a period of light to moderate snow
moving east northeast through the area this morning, between 12Z
and 16Z or so. This is associated with a potent 500 mb shortwave
trough moving through the area.

There are indications from the mesoscale models that a period of
moderate snow, perhaps with convective snow, will occur with this
feature. There is some weak middle level instability in the RAP
forecast soundings across the area, with a few cloud flashes seen
upstream in northwest/north central Missouri. Thus, a quick 1 to 2
inches of additional snowfall may occur through the morning
hours. Some light ice accumulations to 0.10 inches may also occur
on top of the snow that has already fallen. Thus, travel impacts
will continue this morning.

Gusty west winds will develop by midday and continue this
afternoon into tonight. Any additional snow this morning should
blow around and lead to blowing and drifting snow into tonight.
The Winter Weather Advisory will continue as is through today, and
it could be cancelled early later on if the blowing and drifting
snow does not cause significant impacts this afternoon.

Low clouds may linger into tonight, with low level moisture
trapped below inversion. Strong cold air advection later this
afternoon into tonight will bring colder temperatures back into
the area. Used colder CONSRaw for temperatures later tonight.

Combination of winds and cold will bring wind chills near or
below 20 below zero in southwestern parts of the area later
tonight into Sunday morning. Will hold off on a Wind Chill
Advisory for now, and let later shifts evaluate need for a
headline.

Sunday through Monday night...Forecast confidence high.

A weak west to east trough will shift swd through the region on
Sunday. Sct flurries will be expected with stratocumulus clouds in
the dendrite zone. Brisk nwly sfc winds will continue with very
cold temps and wind chills for the morning. A Wind Chill Advisory
may be needed for south central WI.

Another shortwave trough will track from srn Canada to the middle
MS River Valley for Sun nt-Mon. Believe this will help maintain
some stratocumulus and flurries. The winds will be much weaker as
the arctic high tracks from the middle MO River Valley to the Ohio
River Valley.

LONG TERM...Tuesday through Friday...Forecast confidence low to
medium.

Swly winds and warm advection will develop on Tue and increase
into Wed due to the departure of the arctic high. A split jet
stream flow will become established across the country for middle
to late week. The models will have difficulties resolving the
interactions of shortwave troughs in both streams. Chances for
rain and snow are forecast for much of this period with milder
temps for Wed into the late week.

AVIATION(09Z TAFS)...

First wave of wintry mix of light freezing rain, freezing drizzle
and snow with IFR/LIFR ceilings and visibility values will affect
eastern parts of the area for another couple of hours. A period
of light freezing drizzle and light snow then is then expected to
spread east over the area until around 6 AM this morning.

A period of snow is then expected over the area between 6 AM and
10 AM this morning, with a quick 1 to 2 inches possible. Ceilings
and visibility values should be IFR/LIFR category once again, with
1/2 mile visibility and 1/2 inch per hour snowfall rates possible
within heavier snow showers. The snow should move east of the
area around noon.

Gusty southeast winds should weaken and become south to southwest
during the morning. Winds will become gusty out of the west by
midday and continue this afternoon and tonight. Some blowing and
drifting snow is expected this afternoon and tonight, though
visibility values should remain MVFR category or greater. Low
clouds may linger this afternoon and tonight, with a few flurries
possible.

MARINE...

For the southern 2/3 of Lake Michigan, including the nearshore
waters, southeast gales early this morning will gradually weaken,
before veering west and increasing to gales to 40 knots by early
this afternoon. These winds will linger tonight, before gradually
weakening Sunday. The Gale Warning remains in effect through
tonight for this part of Lake Michigan. High waves will build over
the eastern parts of the lake as well.

In addition, the combination of strong winds and cold temperatures
moving into the region will bring heavy freezing spray tonight
into Sunday morning. Thus, a Heavy Freezing Spray Warning is in
effect for this period.

For the northern 1/3 of Lake Michigan, southeast gales early this
morning will weaken by middle morning. Thus, the Gale Warning
remains in effect until 9 AM CST this morning. As low pressure
moves nearby today, winds will continue to weaken, before becoming
northwest by later this evening and north later tonight into
Sunday. Gusts will remain below gale force during this time.

Strong high pressure moving from the northern Plains into the Ohio
River Valley Sunday night into Tuesday should bring lighter winds
to Lake Michigan.

&&

.MKX WATCHES/WARNINGS/ADVISORIES...
WI...Winter Weather Advisory until 6 PM CST this evening for WIZ046-
     047-051-052-056>060-062>072.

LM...Heavy Freezing Spray Warning from 6 PM this evening to noon CST
     Sunday for LMZ080-366-565-567-643>646-669-671-673-675-777-
     779-868-870-872-874-876-878.

     Gale Warning until 6 AM CST Sunday for LMZ080-366-565-567-669-
     671-673-675-777-779-868-870-872-874-876-878.

     Gale Warning until 3 AM CST Sunday for LMZ643>646.

&&

Update...Cronce
Today/Tonight and Aviation/Marine...Wood
Sunday THROUGH Friday...Gehring
Hazardous weather outlook, Jan 18, 9:47 AM CST, 5 hours 23 minutes before
Hazardous Weather Outlook...UPDATED
National Weather Service Milwaukee/Sullivan WI
947 AM CST Sat Jan 18 2020

WIZ046-047-051-052-056>060-062>072-191200-
Marquette-Green Lake-Fond du Lac-Sheboygan-Sauk-Columbia-Dodge-
Washington-Ozaukee-Iowa-Dane-Jefferson-Waukesha-Milwaukee-
Lafayette-Green-Rock-Walworth-Racine-Kenosha-
947 AM CST Sat Jan 18 2020

This Hazardous Weather Outlook is for portions of east central
Wisconsin, south central Wisconsin and southeast Wisconsin.

.DAY ONE...This Afternoon and Tonight

The Winter Weather Advisory continues today for snow showers this
morning. Some blowing and drifting snow is expected this
afternoon and tonight as westerly winds gust to 35 to 40 mph.

Wind chills are expected to fall to 15 below to 25 below zero late
tonight into Sunday morning. A Wind Chill Advisory may be needed
for south central Wisconsin

.DAYS TWO THROUGH SEVEN...Sunday through Friday

Wind chill temperatures of 15 below to 25 below zero are forecast
for Sunday morning.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not needed, but your snow and ice reports
will be appreciated this weekend.

LMZ643>646-191200-
Sheboygan to Port Washington WI-
Port Washington to North Point Light WI-
North Point Light to Wind Point WI-
Wind Point WI to Winthrop Harbor IL-
947 AM CST Sat Jan 18 2020

This Hazardous Weather Outlook is for the nearshore waters from
Sheboygan Wisconsin to Winthrop Harbor Illinois.

.DAY ONE...This Afternoon and Tonight

West to northwest gales will develop this afternoon. The Gale
Warning remains in effect through tonight. A Heavy Freezing Spray
Warning is in effect tonight.

.DAYS TWO THROUGH SEVEN...Sunday through Friday

A Heavy Freezing Spray Warning remains in effect through Sunday
morning. A Small Craft Advisory will likely be needed on Sunday
for continued brisk northwest winds.

LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-868-
870-872-874-876-878-191200-
Lake Michigan Michigan City IN to St. Joseph MI 5 NM offshore to
mid-line of lake.-
Lake Michigan from Seul Choix Point to Rock Island Passage 5NM
offshore to Mid Lake-
Lake Michigan South of a line from Seul Choix Point to the
Mackinac Bridge and North of a line from Charlevoix MI to South
Fox Island 5NM offshore-
Lake Michigan from Charlevoix to Point Betsie MI 5NM Offshore to
mid lake-
Lake Michigan from Point Betsie to Manistee MI 5NM offshore to
Mid Lake-
Lake Michigan from Rock Island Passage to Sturgeon Bay WI 5NM
offshore to mid lake-
Lake Michigan from Sturgeon Bay to Two Rivers WI 5NM offshore to
Mid Lake-
Lake Michigan from Two Rivers to Sheboygan WI 5NM offshore to Mid
Lake-
Lake Michigan from Sheboygan to Port Washington WI 5NM offshore
to Mid Lake-
Lake Michigan from Port Washington to North Point Light WI 5NM
offshore to Mid Lake-
Lake Michigan from North Point Light to Wind Point WI 5NM
offshore to Mid Lake-
Lake Michigan from Wind Point WI to Winthrop Harbor IL 5NM
offshore to Mid Lake-
Lake Michigan from Winthrop Harbor to Wilmette Harbor IL 5NM
offshore to Mid Lake-
Lake Michigan from Wilmette Harbor to Michigan City in 5NM
offshore to Mid Lake-
Lake Michigan from Pentwater to Manistee MI 5NM offshore to Mid
Lake-
Lake Michigan from Whitehall to Pentwater MI 5NM offshore to Mid
Lake-
Lake Michigan from Grand Haven to Whitehall MI 5NM offshore to
Mid Lake-
Lake Michigan from Holland to Grand Haven MI 5NM offshore to Mid
Lake-
Lake Michigan from South Haven to Holland MI 5NM offshore to Mid
lake-
Lake Michigan from St Joseph to South Haven MI 5NM offshore to
Mid Lake-
947 AM CST Sat Jan 18 2020

This Hazardous Weather Outlook is for the open waters of Lake Michigan.

.DAY ONE...This Afternoon and Tonight

West to northwest gales will develop this afternoon. A Gale
Warning is in effect for the southern two thirds of the open
waters through tonight. A Heavy Freezing Spray Warning is in
effect tonight for the southern two thirds of the lake.

.DAYS TWO THROUGH SEVEN...Sunday through Friday

A Heavy Freezing Spray Warning is in effect through Sunday morning
for the southern two thirds of the lake. Brisk northwest winds
will continue for Sunday but remain below gale force.

MRC

www.weather.gov/mkx

In the hours before

Local storm report, Jan 18, 9:44 AM CST, 5 hours 26 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
944 AM CST SAT JAN 18 2020

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

0700 AM     SNOW             1 NE UNION GROVE        42.70N 88.03W
01/18/2020  M5.0 INCH        RACINE             WI   CO-OP OBSERVER

            CO-OP OBSERVER STATION UGRW3 UNION GROVE.

0707 AM     SNOW             1 S BEAVER DAM          43.45N 88.84W
01/18/2020  M4.0 INCH        DODGE              WI   TRAINED SPOTTER

0907 AM     SNOW             1 W WATERTOWN           43.19N 88.74W
01/18/2020  M3.8 INCH        JEFFERSON          WI   PUBLIC

0705 AM     SNOW             2 S PALMYRA             42.85N 88.59W
01/18/2020  M3.8 INCH        JEFFERSON          WI   NWS EMPLOYEE

0920 AM     SNOW             1 NNW KENOSHA           42.60N 87.83W
01/18/2020  M3.5 INCH        KENOSHA            WI   PUBLIC

0400 AM     SNOW             MINERAL POINT           42.86N 90.18W
01/18/2020  M3.5 INCH        IOWA               WI   PUBLIC

&&
Local storm report, Jan 18, 9:52 AM CST, 5 hours 18 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
952 AM CST SAT JAN 18 2020

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

0945 AM     SNOW             1 SSW FOND DU LAC       43.77N 88.45W
01/18/2020  M5.0 INCH        FOND DU LAC        WI   PUBLIC

&&

AK
Local storm report, Jan 18, 9:53 AM CST, 5 hours 17 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
953 AM CST SAT JAN 18 2020

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

0940 AM     SNOW             WEST BEND               43.42N 88.19W
01/18/2020  M6.5 INCH        WASHINGTON         WI   PUBLIC

&&

AK
Local storm report, Jan 18, 9:55 AM CST, 5 hours 15 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
955 AM CST SAT JAN 18 2020

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

0955 AM     SNOW             NEW BERLIN              42.97N 88.13W
01/18/2020  M5.3 INCH        WAUKESHA           WI   PUBLIC

&&

AK
Local storm report, Jan 18, 9:56 AM CST, 5 hours 14 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
956 AM CST SAT JAN 18 2020

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

0956 AM     SNOW             BROWNS LAKE             42.69N 88.23W
01/18/2020  M5.0 INCH        RACINE             WI   PUBLIC

&&

AK
Local storm report, Jan 18, 12:35 PM CST, 2 hours 35 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
1235 PM CST SAT JAN 18 2020

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

1200 PM     SNOW             4 SE SULLIVAN           42.97N 88.55W
01/18/2020  M4.4 INCH        JEFFERSON          WI   OFFICIAL NWS OBS

1200 PM     SNOW             2 NE MAPLE BLUFF        43.13N 89.35W
01/18/2020  M5.6 INCH        DANE               WI   PUBLIC

1200 PM     SNOW             2 W CUDAHY              42.95N 87.91W
01/18/2020  M5.8 INCH        MILWAUKEE          WI   OFFICIAL NWS OBS

&&

The office that day

Everything else NWS Milwaukee, WI issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jan 18, 3:32 AM CSTHeavy Freezing Spray WarningMKX32 hr

Nearby

Wind Chill Advisories in Wisconsin, 2020Every wind chill advisory in 2020

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.