Alert archive / Wisconsin / Snow Squall Warnings in 2024

Snow Squall Warning 1, NWS Green Bay, WI

December 4, 202411 counties in Wisconsin

NWS Green Bay, WI issued this snow squall warning at Dec 4, 2024, 3:05 PM CST for 11 counties in Wisconsin. It was in force for 40 min. 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, 2024, 3:05 PM CST (21:05 UTC)
Expired
Dec 4, 2024, 3:45 PM CST
In force
40 min
Issued by
NWS Green Bay, WI
Area
Storm-based polygon

Counties Brown County, WI, Calumet County, WI, Door County, WI, Kewaunee County, WI, Manitowoc County, WI, Oconto County, WI, Outagamie County, WI, Shawano County, WI, Waupaca County, WI, Waushara County, WI, Winnebago County, WI

The radar

The Green Bay radar (KGRB), 15 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

Green Bay/Straub, WI (KGRB), launched 12:00Z, 9.1 hours before the alert went out and 15 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 2024-12-04Temperature 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 2024-12-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 275 square meters per square second.1939587897Sfc1 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
763 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
275 m²/s²
0-3 km storm-relative helicity
322 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 snow squall warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Green Bay, WI wrote its last area forecast discussion before this snow squall warning went out at Dec 4, 11:50 AM CST, 3 hours 15 minutes earlier.

Area forecast discussion, Dec 4, 11:50 AM CST, 3 hours 15 minutes before
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Hazardous weather outlook, Dec 4, 4:22 AM CST, 10 hours 43 minutes before
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In the hours before

Special weather statement, Dec 4, 9:17 AM CST, 5 hours 48 minutes before
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Special weather statement, Dec 4, 12:24 PM CST, 2 hours 41 minutes before
Special Weather Statement
National Weather Service Green Bay WI
1224 PM CST Wed Dec 4 2024

WIZ022-030-031-035>040-045-048>050-042230-
Door-Marathon-Shawano-Wood-Portage-Waupaca-Outagamie-Brown-
Kewaunee-Waushara-Winnebago-Calumet-Manitowoc-
1224 PM CST Wed Dec 4 2024

...LIGHT SNOW SHOWERS THIS AFTERNOON COULD PRODUCE BRIEF, HEAVIER
BURSTS...

Light snow is expected across central and east-central Wisconsin
this afternoon. Embedded within the lighter snow, conditions are
favorable for some brief, heavy snow showers. This could result in
a rapid increase in snow intensity, lowered visibility to half a
mile or less, and wind gusts up to 40 mph and blowing snow. If
driving, be alert for sudden changes in road conditions and
exercise winter driving precautions. Any heavy snow showers would
last 30 to 60 minutes and then depart.

WIZ010>013-018>021-073-074-042230-
Oneida-Forest-Florence-Northern Marinette County-Lincoln-Langlade-
Menominee-Northern Oconto County-Southern Marinette County-
Southern Oconto County-
1224 PM CST Wed Dec 4 2024

...LIGHT SNOW SHOWERS THIS AFTERNOON COULD PRODUCE BRIEF, HEAVIER
BURSTS...

Light snow is expected across northern Wisconsin this afternoon.
Embedded within the lighter snow, conditions are favorable for
some brief, heavy snow showers. This could result in a rapid
increase in snow intensity, lowered visibility to 1 mile or less,
and wind gusts up to 35 mph and blowing snow. If driving, be
alert for sudden changes in road conditions and exercise winter
driving precautions. Any heavy snow showers would last 30 to 60
minutes and then depart.

WIZ005-042230-
Vilas-
1224 PM CST Wed Dec 4 2024

...INCREASING SNOW INTENSITY...

Snow will continue across Vilas County from now through Thursday
morning, becoming heaviest this evening and overnight due to lake
effect from Lake Superior. Most places will get 3 to 5 inches of
snow, with as much as 8 to 9 inches in far northwest Vilas County.
Roads will become snow-covered and slippery, and strong winds will
result in blowing snow and lowered visibility to 1 mile or less at
times. Exercise winter driving precautions.

KLJ
Special weather statement, Dec 4, 2:44 PM CST, 21 minutes before
Special Weather Statement
National Weather Service Green Bay WI
244 PM CST Wed Dec 4 2024

WIZ013-020>022-031-037>040-045-048>050-073-074-042345-
Northern Marinette County-Menominee-Northern Oconto County-Door-
Shawano-Waupaca-Outagamie-Brown-Kewaunee-Waushara-Winnebago-
Calumet-Manitowoc-Southern Marinette County-
Southern Oconto County-
244 PM CST Wed Dec 4 2024

...REMAIN ALERT FOR BRIEF, HEAVIER BURSTS OF SNOW...

Conditions are favorable for brief, heavy snow showers over the
next 2 the 3 hours. These showers are embedded within a broader
area of light snow. These heavy snow showers could result in a
rapid increase in snow intensity, lowered visibility to a quarter
mile or less, and wind gusts up to 40 mph and blowing snow. If
driving, be alert for sudden changes in road conditions and
exercise winter driving precautions. Any heavy snow showers would
last about 15 to 45 minutes and then depart.

WIZ010>012-018-019-030-035-036-042345-
Oneida-Forest-Florence-Lincoln-Langlade-Marathon-Wood-Portage-
244 PM CST Wed Dec 4 2024

...REMAIN ALERT FOR BRIEF, HEAVIER BURSTS OF SNOW AND LOCALIZED
BLOWING SNOW...

Conditions are favorable for brief, heavy snow showers over the
next 1 to 3 hours. These showers are embedded within a broader
area of light snow. These heavy snow showers could result in a
rapid increase in snow intensity, lowered visibility to a half
mile or less, and wind gusts up to 40 mph and blowing snow. If
driving, be alert for sudden changes in road conditions and
exercise winter driving precautions. Any heavy snow showers would
last about 15 to 45 minutes and then depart.

WIZ005-042345-
Vilas-
244 PM CST Wed Dec 4 2024

...INCREASING SNOW INTENSITY...

Snow will continue across Vilas County from now through Thursday
morning, becoming heaviest this evening and overnight due to lake
effect from Lake Superior. Most places will get 3 to 5 inches of
snow, with as much as 8 to 9 inches in far northwest Vilas County.
Roads will become snow-covered and slippery, and strong winds will
result in blowing snow and lowered visibility to 1 mile or less at
times. Exercise winter driving precautions.

KLJ

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 4, 2:01 AM CSTWind AdvisoryGRBBrown, Calumet, Door, Kewaunee, Manitowoc, Outagamie and 3 more25 hr
Dec 4, 3:09 AM CSTWinter Storm WarningGRBVilas27 hr
Dec 4, 4:17 PM CSTSnow Squall WarningGRBDoor, Kewaunee43 min

Nearby

Snow Squall Warnings in Wisconsin, 2024Every snow squall warning in 2024

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.