Alert archive / Wisconsin / Gale Warnings in 2023

Gale Warning 9, NWS Green Bay, WI

April 30, 2023

NWS Green Bay, WI issued this gale warning at Apr 30, 2023, 10:17 AM CDT. It took effect at May 1, 2023, 7:00 AM CDT. It was in force for 38 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Apr 30, 2023, 10:17 AM CDT (15:17 UTC)
In effect from
May 1, 2023, 7:00 AM CDT
Expired
May 2, 2023, 8:38 PM CDT
In force
38 hr
Issued by
NWS Green Bay, WI

The text

As transmitted.

076 
WHUS73 KGRB 301517
MWWGRB

URGENT - MARINE WEATHER MESSAGE
National Weather Service Green Bay WI
1017 AM CDT Sun Apr 30 2023

LMZ521-522-541>543-302330-
/O.UPG.KGRB.SC.Y.0042.230501T0900Z-230501T1800Z/
/O.NEW.KGRB.GL.W.0009.230501T1200Z-230502T1800Z/
/O.UPG.KGRB.GL.A.0003.230501T1800Z-230502T1800Z/
Green Bay south of line from  Cedar River to Rock Island Passage
and north of a line from Oconto WI to Little Sturgeon Bay WI-
Green Bay south of line from  Oconto WI to Little Sturgeon Bay WI-
Rock Island Passage to Sturgeon Bay WI-
Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI-
1017 AM CDT Sun Apr 30 2023

...GALE WARNING IN EFFECT FROM 7 AM MONDAY TO 1 PM CDT TUESDAY...

* WHAT...Northwest winds 15 to 25 kts with gusts up to 45 kts 
  and waves 2 to 5 ft expected.

* WHERE...Lake Michigan nearshore waters from Washington Island 
  to Sheboygan, and Central and Southern Bay of Green Bay.

* WHEN...From 7 AM Monday to 1 PM CDT Tuesday.

* IMPACTS...Strong winds will cause hazardous waves which could
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$
10 follow-up statements
967 
WHUS73 KGRB 302036
MWWGRB

URGENT - MARINE WEATHER MESSAGE
National Weather Service Green Bay WI
336 PM CDT Sun Apr 30 2023

LMZ521-522-541>543-010445-
/O.CON.KGRB.GL.W.0009.230501T1200Z-230502T1800Z/
Green Bay south of line from  Cedar River to Rock Island Passage
and north of a line from Oconto WI to Little Sturgeon Bay WI-
Green Bay south of line from  Oconto WI to Little Sturgeon Bay WI-
Rock Island Passage to Sturgeon Bay WI-
Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI-
336 PM CDT Sun Apr 30 2023

...GALE WARNING REMAINS IN EFFECT FROM 7 AM MONDAY TO 1 PM CDT
TUESDAY...

* WHAT...Northwest winds increasing to 30 kts with gusts to around
  45 kts. Waves building to 4 to 7 ft.  

* WHERE...Lake Michigan nearshore waters from Washington Island 
  to Sheboygan, and Central and Southern Bay of Green Bay.

* WHEN...From 7 AM Monday to 1 PM CDT Tuesday.

* IMPACTS...Strong winds will cause hazardous waves which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$
868 
WHUS73 KGRB 010216
MWWGRB

URGENT - MARINE WEATHER MESSAGE
National Weather Service Green Bay WI
916 PM CDT Sun Apr 30 2023

LMZ521-522-541>543-011030-
/O.CON.KGRB.GL.W.0009.230501T1200Z-230502T1800Z/
Green Bay south of line from  Cedar River to Rock Island Passage
and north of a line from Oconto WI to Little Sturgeon Bay WI-
Green Bay south of line from  Oconto WI to Little Sturgeon Bay WI-
Rock Island Passage to Sturgeon Bay WI-
Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI-
916 PM CDT Sun Apr 30 2023

...GALE WARNING REMAINS IN EFFECT FROM 7 AM MONDAY TO 1 PM CDT
TUESDAY...

* WHAT...Northwest winds increasing to 30 kts with gusts to 
  around 45 kts. Waves building to 4 to 7 ft.

* WHERE...Lake Michigan nearshore waters from Washington Island 
  to Sheboygan, and Central and Southern Bay of Green Bay.

* WHEN...From 7 AM Monday to 1 PM CDT Tuesday.

* IMPACTS...Strong winds will cause hazardous waves which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$
234 
WHUS73 KGRB 010909
MWWGRB

URGENT - MARINE WEATHER MESSAGE
National Weather Service Green Bay WI
409 AM CDT Mon May 1 2023

LMZ521-522-541>543-011715-
/O.CON.KGRB.GL.W.0009.230501T1200Z-230502T1800Z/
Green Bay south of line from  Cedar River to Rock Island Passage
and north of a line from Oconto WI to Little Sturgeon Bay WI-
Green Bay south of line from  Oconto WI to Little Sturgeon Bay WI-
Rock Island Passage to Sturgeon Bay WI-
Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI-
409 AM CDT Mon May 1 2023

...GALE WARNING REMAINS IN EFFECT UNTIL 1 PM CDT TUESDAY...

* WHAT...Northwest winds increasing to 15 to 25 kts with gusts up
  to 40 kts and waves 2 to 5 ft expected.

* WHERE...Lake Michigan nearshore waters from Washington Island 
  to Sheboygan, and Central and Southern Bay of Green Bay.

* WHEN...Until 1 PM CDT Tuesday.

* IMPACTS...Strong winds will cause hazardous waves which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$
857 
WHUS73 KGRB 011542
MWWGRB

URGENT - MARINE WEATHER MESSAGE
National Weather Service Green Bay WI
1042 AM CDT Mon May 1 2023

LMZ521-522-541>543-012345-
/O.CON.KGRB.GL.W.0009.000000T0000Z-230502T1800Z/
Green Bay south of line from  Cedar River to Rock Island Passage
and north of a line from Oconto WI to Little Sturgeon Bay WI-
Green Bay south of line from  Oconto WI to Little Sturgeon Bay WI-
Rock Island Passage to Sturgeon Bay WI-
Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI-
1042 AM CDT Mon May 1 2023

...GALE WARNING REMAINS IN EFFECT UNTIL 1 PM CDT TUESDAY...

* WHAT...Northwest winds 15 to 25 kts with gusts up to 45 kts 
  and waves 2 to 5 ft.

* WHERE...Lake Michigan nearshore waters from Washington Island 
  to Sheboygan, and Central and Southern Bay of Green Bay.

* WHEN...Until 1 PM CDT Tuesday.

* IMPACTS...Strong winds will cause hazardous waves which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$
671 
WHUS73 KGRB 012014
MWWGRB

URGENT - MARINE WEATHER MESSAGE
National Weather Service Green Bay WI
314 PM CDT Mon May 1 2023

LMZ521-522-541>543-020415-
/O.EXT.KGRB.GL.W.0009.000000T0000Z-230503T0000Z/
Green Bay south of line from  Cedar River to Rock Island Passage
and north of a line from Oconto WI to Little Sturgeon Bay WI-
Green Bay south of line from  Oconto WI to Little Sturgeon Bay WI-
Rock Island Passage to Sturgeon Bay WI-
Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI-
314 PM CDT Mon May 1 2023

...GALE WARNING NOW IN EFFECT UNTIL 7 PM CDT TUESDAY...

* WHAT...Northwest winds to 30 kts with gales force gusts to 
  around 40 kts and waves 4 to 7 ft.

* WHERE...Lake Michigan nearshore waters from Washington Island 
  to Sheboygan, and Central and Southern Bay of Green Bay.

* WHEN...Until 7 PM CDT Tuesday.

* IMPACTS...Strong winds will cause hazardous waves which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$
891 
WHUS73 KGRB 020225
MWWGRB

URGENT - MARINE WEATHER MESSAGE
National Weather Service Green Bay WI
925 PM CDT Mon May 1 2023

LMZ521-522-541>543-021030-
/O.CON.KGRB.GL.W.0009.000000T0000Z-230503T0000Z/
Green Bay south of line from  Cedar River to Rock Island Passage
and north of a line from Oconto WI to Little Sturgeon Bay WI-
Green Bay south of line from  Oconto WI to Little Sturgeon Bay WI-
Rock Island Passage to Sturgeon Bay WI-
Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI-
925 PM CDT Mon May 1 2023

...GALE WARNING REMAINS IN EFFECT UNTIL 7 PM CDT TUESDAY...

* WHAT...Northwest winds to 30 kts with gales force gusts to 
  around 40 kts and waves 4 to 7 ft.

* WHERE...Lake Michigan nearshore waters from Washington Island 
  to Sheboygan, and Central and Southern Bay of Green Bay.

* WHEN...Until 7 PM CDT Tuesday.

* IMPACTS...Strong winds will cause hazardous waves which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$
454 
WHUS73 KGRB 020826
MWWGRB

URGENT - MARINE WEATHER MESSAGE
National Weather Service Green Bay WI
326 AM CDT Tue May 2 2023

LMZ521-522-541>543-021630-
/O.CON.KGRB.GL.W.0009.000000T0000Z-230503T0000Z/
Green Bay south of line from  Cedar River to Rock Island Passage
and north of a line from Oconto WI to Little Sturgeon Bay WI-
Green Bay south of line from  Oconto WI to Little Sturgeon Bay WI-
Rock Island Passage to Sturgeon Bay WI-
Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI-
326 AM CDT Tue May 2 2023

...GALE WARNING REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING...

* WHAT...Northwest winds 20 to 25 kts with gusts up to 40 kts and
  waves 4 to 7 ft.

* WHERE...Lake Michigan nearshore waters from Washington Island 
  to Sheboygan, and Central and Southern Bay of Green Bay.

* WHEN...Until 7 PM CDT this evening.

* IMPACTS...Strong winds will cause hazardous waves which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

Kurimski
374 
WHUS73 KGRB 021459
MWWGRB

URGENT - MARINE WEATHER MESSAGE
National Weather Service Green Bay WI
959 AM CDT Tue May 2 2023

LMZ521-522-022200-
/O.CON.KGRB.GL.W.0009.000000T0000Z-230503T0000Z/
/O.NEW.KGRB.SC.Y.0043.230503T0000Z-230503T0900Z/
Green Bay south of line from  Cedar River to Rock Island Passage
and north of a line from Oconto WI to Little Sturgeon Bay WI-
Green Bay south of line from  Oconto WI to Little Sturgeon Bay WI-
959 AM CDT Tue May 2 2023

...GALE WARNING REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING...
...SMALL CRAFT ADVISORY IN EFFECT FROM 7 PM THIS EVENING TO 4 AM
CDT WEDNESDAY...

* WHAT...For the Gale Warning, north winds 20 to 25 kts with gusts
  up to 35 kts and waves 2 to 5 ft. For the Small Craft Advisory,
  north winds 15 to 20 kts with gusts up to 30 kts and waves 1 to
  4 ft expected.

* WHERE...Central and Southern Bay of Green Bay.

* WHEN...For the Gale Warning, until 7 PM CDT this evening. For 
  the Small Craft Advisory, from 7 PM this evening to 4 AM CDT 
  Wednesday.

* IMPACTS...Strong winds will cause hazardous waves which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

LMZ541>543-022200-
/O.CON.KGRB.GL.W.0009.000000T0000Z-230503T0000Z/
/O.NEW.KGRB.SC.Y.0043.230503T0000Z-230503T1500Z/
Rock Island Passage to Sturgeon Bay WI-
Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI-
959 AM CDT Tue May 2 2023

...GALE WARNING REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING...
...SMALL CRAFT ADVISORY IN EFFECT FROM 7 PM THIS EVENING TO 10 AM
CDT WEDNESDAY...

* WHAT...For the Gale Warning, northwest winds 20 to 25 kts with
  gusts up to 35 kts and waves 2 to 5 ft. For the Small Craft
  Advisory, north winds 15 to 25 kts with gusts up to 30 kts and 
  waves 1 to 4 ft expected.

* WHERE...Lake Michigan nearshore waters from Washington Island 
  to Sheboygan.

* WHEN...For the Gale Warning, until 7 PM CDT this evening. For 
  the Small Craft Advisory, from 7 PM this evening to 10 AM CDT 
  Wednesday.

* IMPACTS...Strong winds will cause hazardous waves which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

AK
819 
WHUS73 KGRB 022013
MWWGRB

URGENT - MARINE WEATHER MESSAGE
National Weather Service Green Bay WI
313 PM CDT Tue May 2 2023

LMZ522-542-543-030415-
/O.CAN.KGRB.GL.W.0009.000000T0000Z-230503T0000Z/
/O.EXT.KGRB.SC.Y.0043.230502T2013Z-230503T1200Z/
Green Bay south of line from  Oconto WI to Little Sturgeon Bay WI-
Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI-
313 PM CDT Tue May 2 2023

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 7 AM CDT WEDNESDAY...
...GALE WARNING IS CANCELLED...

* WHAT...North winds 10 to 20 kts with gusts up to 30 kts and 
  waves 1 to 4 ft.

* WHERE...Lake Michigan nearshore waters from Sturgeon Bay to 
  Sheboygan, and Southern Bay of Green Bay.

* WHEN...Until 7 AM CDT Wednesday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

LMZ521-541-030415-
/O.EXT.KGRB.GL.W.0009.000000T0000Z-230503T0300Z/
/O.EXT.KGRB.SC.Y.0043.230503T0300Z-230503T1500Z/
Green Bay south of line from  Cedar River to Rock Island Passage
and north of a line from Oconto WI to Little Sturgeon Bay WI-
Rock Island Passage to Sturgeon Bay WI-
313 PM CDT Tue May 2 2023

...GALE WARNING NOW IN EFFECT UNTIL 10 PM CDT THIS EVENING...
...SMALL CRAFT ADVISORY NOW IN EFFECT FROM 10 PM THIS EVENING TO
10 AM CDT WEDNESDAY...

* WHAT...For the Gale Warning, north winds 20 to 25 kts with 
  gusts up to 40 kts and waves 2 to 5 ft. For the Small Craft 
  Advisory, north winds 15 to 20 kts with gusts up to 30 kts and 
  waves 2 to 5 ft expected.

* WHERE...Lake Michigan nearshore waters from Washington Island 
  to Sturgeon Bay, and Central Bay of Green Bay.

* WHEN...For the Gale Warning, until 10 PM CDT this evening. For 
  the Small Craft Advisory, from 10 PM this evening to 10 AM CDT 
  Wednesday.

* IMPACTS...Strong winds will cause hazardous waves which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$
189 
WHUS73 KGRB 030138
MWWGRB

URGENT - MARINE WEATHER MESSAGE
National Weather Service Green Bay WI
838 PM CDT Tue May 2 2023

LMZ521-541-030945-
/O.CAN.KGRB.GL.W.0009.000000T0000Z-230503T0300Z/
/O.EXT.KGRB.SC.Y.0043.230503T0138Z-230503T1500Z/
Green Bay south of line from  Cedar River to Rock Island Passage
and north of a line from Oconto WI to Little Sturgeon Bay WI-
Rock Island Passage to Sturgeon Bay WI-
838 PM CDT Tue May 2 2023

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 10 AM CDT WEDNESDAY...
...GALE WARNING IS CANCELLED...

* WHAT...North winds 15 to 25 kts and waves 2 to 5 ft.

* WHERE...Lake Michigan nearshore waters from Washington Island 
  to Sturgeon Bay, and Central Bay of Green Bay.

* WHEN...Until 10 AM CDT Wednesday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

LMZ522-542-543-030945-
/O.CON.KGRB.SC.Y.0043.000000T0000Z-230503T1200Z/
Green Bay south of line from  Oconto WI to Little Sturgeon Bay WI-
Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI-
838 PM CDT Tue May 2 2023

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 7 AM CDT
WEDNESDAY...

* WHAT...North winds 10 to 20 kts with gusts up to 25 kts and 
  waves 1 to 4 ft.

* WHERE...Lake Michigan nearshore waters from Sturgeon Bay to 
  Sheboygan, and Southern Bay of Green Bay.

* WHEN...Until 7 AM CDT Wednesday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

What forecasters said that day

The local office's own words before this gale 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 gale warning went out at Apr 30, 6:56 AM CDT, 3 hours 21 minutes earlier.

Area forecast discussion, Apr 30, 6:56 AM CDT, 3 hours 21 minutes before
Area Forecast Discussion
National Weather Service Green Bay WI
656 AM CDT Sun Apr 30 2023

Updated aviation portion for 12Z TAF issuance

.SHORT TERM...Today...Tonight...and Monday
Issued at 416 AM CDT Sun Apr 30 2023

The current Winter Weather Advisory for far North Central Wisconsin
looks like it is working out pretty well, so will continue it
until it ends this morning.

Light to moderate snow will continue in the advisory area this
morning, then gradually diminish and mix with rain in the afternoon.
A mix of snow and rain will change to all rain before noon and
diminish elsewhere as surface temperatures warm up. Highs today
will be a good 20 degrees below normal for this time of the year.

Another round of precipitation is expected tonight and Monday across
eastern and far northern Wisconsin as a strong upper jet rotates
around the upper low over Lower Michigan and a surface trough
moves across northeast Wisconsin. The big question is the amount
of snow that will fall.

This is a very challenging forecast as temperatures in the lowest
5000 feet hold the key as to what kind of precipitation will make
it to the surface. There is also the question of ground temperatures
and whether the snow can accumulate. Most of the forecast models
have temperatures at 925 and 850mb close to 0C and boundary layer
temperatures will likely be a degree or so above freezing. If the
precipitation falls largely as snow and accumulates there could
be significant snow in the areas west of the bay, the Fox Valley
and lakeshore counties for Monday morning travelers, but confidence
in this happening is low. There is better confidence in a few
inches of snow falling near the Michigan border, especially Vilas
county there is some potential for heavy snow. A winter weather
advisory or winter storm warning will likely be needed for there
tonight.

Winds will increase and gust to 35 mph Monday, so if there is any
wet snow accumulation on tree branches or wires there could be
some power outages. Highs Monday will be 15 to 20 degrees below
normal.

.LONG TERM...Monday Night Through Saturday
Issued at 416 AM CDT Sun Apr 30 2023

The stubborn closed 500mb low across the western Great Lakes the
last several days will finally move to the eastern seaboard by
the middle of the week. 500mb ridge is expected to build across
the western Plains into the Rockies by the end of the work week.
Per the ECMWF, an east-west 500mb trough will extend from Ontario
west to Manitoba and Saskatchewan. The models over the last few
days have had differing solutions on how the upper pattern will
evolve and how quick precipitation would make it back into the
later in the week.

For Monday night, one final accumulating snow is again expected
across far northern Wisconsin. Another 1 to 3 inches of snow is
possible across Vilas County with lighter amounts just to the
south. There is a continued chance of rain/snow showers across
the north Tuesday morning. Currently have a dry forecast for
Tuesday afternoon, however concerned there could be some isolated
showers during the afternoon with the cool northwest flow aloft.
For Wednesday night through Friday, northwest flow aloft and weak
impulses moving through the mean flow could bring a small chance
of showers at times. A few days ago, the ECMWF had a decent system
for Thursday into Thursday night that would have brought a decent
rainfall. This model has backtracked on that solution. Temperatures
will run well below normal through the middle of the week. There
are some signs that warmer temperatures arrive next weekend as
500mb ridging is expected across the western Great Lakes.
Temperatures close to normal next weekend?.
&&

.AVIATION...for 12Z TAF Issuance
Issued at 656 AM CDT Sun Apr 30 2023

IFR conditions are expected through Monday as a low
pressure systems remains nearly stationary over Michigan.

Steady snow will continue through midday north of a TKV to IMT
line with snow and rain showers to the south. Most places will
have rain showers during the afternoon and evening, though snow is
possible north of RHI.

Another round of steady precipitation is expected across eastern
Wisconsin late tonight through midday Monday. Rain will likely
change to snow at MNM/OCQ/GRB/ATW/SUE/MTW but there is a lot of
uncertainty about whether snow might accumulate due to marginally
cold air and pavement temperatures.
&&

.GRB WATCHES/WARNINGS/ADVISORIES...
Winter Weather Advisory until 10 AM CDT this morning for WIZ005-
010>012.

Winter Storm Watch from this evening through Monday evening for
WIZ005.
&&

SHORT TERM.....RDM
LONG TERM......Eckberg
AVIATION.......RDM
Hazardous weather outlook, Apr 30, 3:42 AM CDT, 6 hours 35 minutes before
Hazardous Weather Outlook
National Weather Service Green Bay WI
342 AM CDT Sun Apr 30 2023

WIZ005-010>013-018>022-030-031-035>040-045-048>050-073-074-010845-
Vilas-Oneida-Forest-Florence-Northern Marinette County-Lincoln-
Langlade-Menominee-Northern Oconto County-Door-Marathon-Shawano-
Wood-Portage-Waupaca-Outagamie-Brown-Kewaunee-Waushara-Winnebago-
Calumet-Manitowoc-Southern Marinette County-
Southern Oconto County-
342 AM CDT Sun Apr 30 2023

This Hazardous Weather Outlook is for north-central and northeast
Wisconsin.

.DAY ONE...Today and Tonight

Roads will be snow covered and slippery this morning across north
central and far northeast Wisconsin.

Snow could make travel hazardous again tonight across northern
Wisconsin, especially Vilas County. Wet snow is also possible
across central and east central Wisconsin late tonight, but
there is a lot of uncertainty as to whether it will accumulate.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

Hazardous travel is likely across far northern Wisconsin Monday
morning, and there is some chance that wet snow could create some
slippery roads and sidewalks in east central Wisconsin as well.

A few inches of snow are possible again Monday night across far
northern Wisconsin, which could cause roads to become snow covered
and slippery into Tuesday morning.

.SPOTTER INFORMATION STATEMENT...

Snowfall reports from spotters would be greatly appreciated.

LMZ521-522-541>543-010845-
The Bay of Green Bay south of a line from Cedar River MI to Rock
Island Passage-Lake Michigan from Washington Island to Sheboygan-
342 AM CDT Sun Apr 30 2023

This Hazardous Weather Outlook is for portions of northwest Lake
Michigan and the waters of Green Bay.

.DAY ONE...Today and Tonight

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

Northwest gale force gusts are likely Monday into Tuesday
morning.

RDM/Eckberg

In the hours before

Local storm report, Apr 30, 8:07 AM CDT, 2 hours 10 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREEN BAY WI
807 AM CDT SUN APR 30 2023

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

0802 AM     SNOW             1 NNW ARMSTRONG CREEK   45.67N 88.45W
04/30/2023  M3.0 INCH        FOREST             WI   PUBLIC

&&
Local storm report, Apr 30, 8:10 AM CDT, 2 hours 7 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREEN BAY WI
810 AM CDT SUN APR 30 2023

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

0809 AM     SNOW             EAGLE RIVER             45.91N 89.25W
04/30/2023  M7.5 INCH        VILAS              WI   PUBLIC

            VIA SOCIAL MEDIA.

&&
Local storm report, Apr 30, 9:55 AM CDT, 22 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREEN BAY WI
955 AM CDT SUN APR 30 2023

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

0746 AM     SNOW             PRESQUE ISLE            46.25N 89.73W
04/30/2023  M6.5 INCH        VILAS              WI   CO-OP OBSERVER

0830 AM     SNOW             MANITOWISH WATERS       46.13N 89.88W
04/30/2023  M6.0 INCH        VILAS              WI   CO-OP OBSERVER

0948 AM     SNOW             3.7 NNW PHELPS          46.11N 89.11W
04/30/2023  M8.0 INCH        VILAS              WI   CO-OP OBSERVER

0718 AM     SNOW             THREE LAKES             45.79N 89.16W
04/30/2023  M5.0 INCH        ONEIDA             WI   PUBLIC

            VERY HEAVY WET SNOW. VIA SOCIAL MEDIA.

0937 AM     SNOW             HARSHAW                 45.66N 89.65W
04/30/2023  M5.0 INCH        ONEIDA             WI   PUBLIC

            VIA SOCIAL MEDIA.

0725 AM     SNOW             ARGONNE                 45.66N 88.88W
04/30/2023  M7.5 INCH        FOREST             WI   CO-OP OBSERVER

&&
Local storm report, Apr 30, 9:58 AM CDT, 19 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREEN BAY WI
958 AM CDT SUN APR 30 2023

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

0725 AM     SNOW             ARGONNE                 45.66N 88.88W
04/30/2023  M4.5 INCH        FOREST             WI   CO-OP OBSERVER

            CORRECTS PREVIOUS SNOW REPORT FROM ARGONNE.

&&
Local storm report, Apr 30, 10:00 AM CDT, 17 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREEN BAY WI
1000 AM CDT SUN APR 30 2023

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

0822 AM     SNOW             SUGAR CAMP              45.78N 89.30W
04/30/2023  U7.0 INCH        ONEIDA             WI   PUBLIC

            CORRECTS PREVIOUS SNOW REPORT FROM SUGAR
            CAMP. VIA SOCIAL MEDIA.

&&
Local storm report, Apr 30, 10:01 AM CDT, 16 minutes before
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE GREEN BAY WI
1001 AM CDT SUN APR 30 2023

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

0545 AM     SNOW             FLORENCE                45.93N 88.25W
04/30/2023  E2.0 INCH        FLORENCE           WI   PUBLIC

0602 AM     SNOW             ST GERMAIN              45.91N 89.48W
04/30/2023  M5.0 INCH        VILAS              WI   TRAINED SPOTTER

            5 TO 6 INCHES.

0603 AM     SNOW             ARBOR VITAE             45.91N 89.65W
04/30/2023  M5.0 INCH        VILAS              WI   TRAINED SPOTTER

0630 AM     SNOW             2 SW MINOCQUA           45.84N 89.72W
04/30/2023  M6.0 INCH        ONEIDA             WI   PUBLIC

            VIA SOCIAL MEDIA.

0630 AM     SNOW             2 SW MINOCQUA           45.84N 89.72W
04/30/2023  M6.0 INCH        ONEIDA             WI   PUBLIC

            VIA SOCIAL MEDIA.

0640 AM     SNOW             PHELPS                  46.06N 89.08W
04/30/2023  M7.0 INCH        VILAS              WI   PUBLIC

            VIA SOCIAL MEDIA.

0640 AM     SNOW             PHELPS                  46.06N 89.08W
04/30/2023  M7.0 INCH        VILAS              WI   PUBLIC

            VIA SOCIAL MEDIA.

0649 AM     SNOW             3 W GOODNOW             45.70N 89.69W
04/30/2023  M6.5 INCH        ONEIDA             WI   PUBLIC

0652 AM     SNOW             1 N ARMSTRONG CREEK     45.67N 88.45W
04/30/2023  M2.5 INCH        FOREST             WI   PUBLIC

0710 AM     SNOW             10 NE BOULDER JUNCTION  46.19N 89.46W
04/30/2023  M8.4 INCH        VILAS              WI   COCORAHS

            COCORAHS STATION WI-VL-9 BOULDER JUNCTION 9
            ENE.

0718 AM     SNOW             THREE LAKES             45.79N 89.16W
04/30/2023  M5.0 INCH        ONEIDA             WI   PUBLIC

            VERY HEAVY WET SNOW. VIA SOCIAL MEDIA.

0718 AM     SNOW             THREE LAKES             45.79N 89.16W
04/30/2023  M5.0 INCH        ONEIDA             WI   PUBLIC

            VERY HEAVY WET SNOW. VIA SOCIAL MEDIA.

0724 AM     SNOW             EAGLE RIVER             45.91N 89.25W
04/30/2023  M6.0 INCH        VILAS              WI   PUBLIC

            VIA SOCIAL MEDIA.

0725 AM     SNOW             ARGONNE                 45.66N 88.88W
04/30/2023  M4.5 INCH        FOREST             WI   CO-OP OBSERVER

            CORRECTS PREVIOUS SNOW REPORT FROM ARGONNE.

0728 AM     SNOW             1 SE HAZELHURST         45.78N 89.70W
04/30/2023  M6.1 INCH        ONEIDA             WI   PUBLIC

0729 AM     SNOW             WOODRUFF                45.90N 89.69W
04/30/2023  M8.0 INCH        VILAS              WI   PUBLIC

            VIA SOCIAL MEDIA.

0729 AM     SNOW             WOODRUFF                45.90N 89.69W
04/30/2023  M8.0 INCH        VILAS              WI   PUBLIC

            VIA SOCIAL MEDIA.

0746 AM     SNOW             PRESQUE ISLE            46.25N 89.73W
04/30/2023  M6.5 INCH        VILAS              WI   CO-OP OBSERVER

0802 AM     SNOW             1 NNW ARMSTRONG CREEK   45.67N 88.45W
04/30/2023  M3.0 INCH        FOREST             WI   PUBLIC

            .

0802 AM     SNOW             1 NNW ARMSTRONG CREEK   45.67N 88.45W
04/30/2023  M3.0 INCH        FOREST             WI   PUBLIC

0809 AM     SNOW             EAGLE RIVER             45.91N 89.25W
04/30/2023  M7.5 INCH        VILAS              WI   PUBLIC

            VIA SOCIAL MEDIA.

0822 AM     SNOW             SUGAR CAMP              45.78N 89.30W
04/30/2023  U7.0 INCH        ONEIDA             WI   PUBLIC

            CORRECTS PREVIOUS SNOW REPORT FROM SUGAR
            CAMP. VIA SOCIAL MEDIA.

0830 AM     SNOW             MANITOWISH WATERS       46.13N 89.88W
04/30/2023  M6.0 INCH        VILAS              WI   CO-OP OBSERVER

            .

0830 AM     SNOW             MANITOWISH WATERS       46.13N 89.88W
04/30/2023  M6.0 INCH        VILAS              WI   CO-OP OBSERVER

0937 AM     SNOW             HARSHAW                 45.66N 89.65W
04/30/2023  M5.0 INCH        ONEIDA             WI   PUBLIC

            VIA SOCIAL MEDIA.

0945 AM     SNOW             HARSHAW                 45.66N 89.65W
04/30/2023  M5.0 INCH        ONEIDA             WI   PUBLIC

            VIA SOCIAL MEDIA.

0948 AM     SNOW             3.7 NNW PHELPS          46.11N 89.11W
04/30/2023  M8.0 INCH        VILAS              WI   CO-OP OBSERVER

            .

0948 AM     SNOW             3.7 NNW PHELPS          46.11N 89.11W
04/30/2023  M8.0 INCH        VILAS              WI   CO-OP OBSERVER

&&

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 29, 9:35 PM CDTGale WatchGRB13 hr
Apr 29, 9:35 PM CDTSmall Craft AdvisoryGRB13 hr
Apr 30, 2:31 PM CDTWinter Storm WarningGRBVilas24 hr
Apr 30, 2:31 PM CDTWinter Weather AdvisoryGRBBrown, Calumet, Florence, Forest, Manitowoc, Marinette and 7 more46 hr

Nearby

Gale Warnings in Wisconsin, 2023Every gale warning in 2023

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.