Alert archive / Wisconsin / Beach Hazards Statements in 2026

Beach Hazards Statement 19, NWS Green Bay, WI

September 13, 2026Door County, Kewaunee County, Manitowoc County, Wisconsin

NWS Green Bay, WI issued this beach hazards statement at Sep 13, 2026, 1:13 PM CDT for Door County, Kewaunee County, Manitowoc County, Wisconsin. It took effect at Sep 14, 2026, 4:00 PM CDT. It was in force for 27 hr.

The area

The counties it named.

The facts

Issued
Sep 13, 2026, 1:13 PM CDT (18:13 UTC)
In effect from
Sep 14, 2026, 4:00 PM CDT
Expired
Sep 15, 2026, 7:00 PM CDT
In force
27 hr
Issued by
NWS Green Bay, WI

Counties Door County, WI, Kewaunee County, WI, Manitowoc County, WI

The radar

The Green Bay radar (KGRB), 47 km from the middle of the area, began a volume at 18:14 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

Detroit, MI (KDTX), launched 12:00Z, 6.2 hours before the alert went out and 383 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, Detroit, MI at 12:00Z on 2026-09-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 489 joules per kilogram.LCLLFCEL10008507005003002001001 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, Detroit, MI at 12:00Z on 2026-09-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 42 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
489 J/kg
Mixed-layer CIN
-66 J/kg
Mixed-layer LCL
638 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
42 m²/s²
0-3 km storm-relative helicity
69 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.9

Open this sounding in Storm Lab

The text

As transmitted.

809 
WHUS43 KGRB 131813
CFWGRB

Coastal Hazard Message
National Weather Service Green Bay WI
113 PM CDT Sun Sep 13 2026

WIZ040-050-140600-
/O.NEW.KGRB.BH.S.0019.260914T2100Z-260915T2100Z/
Kewaunee-Manitowoc-
113 PM CDT Sun Sep 13 2026

...BEACH HAZARDS STATEMENT IN EFFECT FROM MONDAY AFTERNOON
THROUGH TUESDAY AFTERNOON...

* WHAT...High waves and dangerous currents expected. 

* WHERE...Beaches along Lake Michigan in Kewaunee and Manitowoc 
  Counties.

* WHEN...From Monday afternoon through Tuesday afternoon.

* IMPACTS...Dangerous swimming conditions are expected. Strong 
  currents can pull swimmers into deeper water and high waves 
  can sweep people off piers.

* ADDITIONAL DETAILS...Several beaches that will be most 
  susceptible to the dangerous swimming conditions include... 
  Cresent Beach and City of Kewaunee Beach in Kewaunee County. 
  Point Beach, Neshotah Beach and Red Arrow Beach in Manitowoc 
  County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain out of the water to avoid hazardous swimming conditions.

&&

$$

WIZ022-140600-
/O.NEW.KGRB.BH.S.0019.260915T0000Z-260916T0000Z/
Door-
113 PM CDT Sun Sep 13 2026

...BEACH HAZARDS STATEMENT IN EFFECT FROM MONDAY EVENING THROUGH
TUESDAY EVENING...

* WHAT...High waves and dangerous currents expected. 

* WHERE...Beaches along Lake Michigan in Door County.

* WHEN...From Monday evening through Tuesday evening.

* IMPACTS...Dangerous swimming conditions are expected. Strong 
  currents can pull swimmers into deeper water and high waves 
  can sweep people off piers.

* ADDITIONAL DETAILS...Several beaches that will be most 
  susceptible to the dangerous swimming conditions include... 
  Rock Island State Beach, Baileys Harbor beaches and Whitefish 
  Dunes Beach in Door County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain out of the water to avoid hazardous swimming conditions.

&&

$$
8 follow-up statements
843 
WHUS43 KGRB 140012
CFWGRB

Coastal Hazard Message
National Weather Service Green Bay WI
712 PM CDT Sun Sep 13 2026

WIZ040-050-141000-
/O.CON.KGRB.BH.S.0019.260914T2100Z-260915T2100Z/
Kewaunee-Manitowoc-
712 PM CDT Sun Sep 13 2026

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM MONDAY
AFTERNOON THROUGH TUESDAY AFTERNOON...

* WHAT...High waves and dangerous currents expected.

* WHERE...Beaches along Lake Michigan in Kewaunee and Manitowoc 
  Counties.

* WHEN...From Monday afternoon through Tuesday afternoon.

* IMPACTS...Dangerous swimming conditions are expected. Strong 
  currents can pull swimmers into deeper water and high waves 
  can sweep people off piers.

* ADDITIONAL DETAILS...Several beaches that will be most 
  susceptible to the dangerous swimming conditions include... 
  Cresent Beach and City of Kewaunee Beach in Kewaunee County. 
  Point Beach, Neshotah Beach and Red Arrow Beach in Manitowoc 
  County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain out of the water to avoid hazardous swimming conditions.

&&

$$

WIZ022-141000-
/O.CON.KGRB.BH.S.0019.260915T0000Z-260916T0000Z/
Door-
712 PM CDT Sun Sep 13 2026

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM MONDAY EVENING
THROUGH TUESDAY EVENING...

* WHAT...High waves and dangerous currents expected.

* WHERE...Beaches along Lake Michigan in Door County.

* WHEN...From Monday evening through Tuesday evening.

* IMPACTS...Dangerous swimming conditions are expected. Strong 
  currents can pull swimmers into deeper water and high waves 
  can sweep people off piers.

* ADDITIONAL DETAILS...Several beaches that will be most 
  susceptible to the dangerous swimming conditions include... 
  Rock Island State Beach, Baileys Harbor beaches and Whitefish 
  Dunes Beach in Door County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain out of the water to avoid hazardous swimming conditions.

&&

$$
967 
WHUS43 KGRB 140747
CFWGRB

Coastal Hazard Message
National Weather Service Green Bay WI
247 AM CDT Mon Sep 14 2026

WIZ040-050-141600-
/O.CON.KGRB.BH.S.0019.260914T2100Z-260915T2100Z/
Kewaunee-Manitowoc-
247 AM CDT Mon Sep 14 2026

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM THIS AFTERNOON
THROUGH TUESDAY AFTERNOON...

* WHAT...High waves and dangerous currents expected.

* WHERE...Beaches along Lake Michigan in Kewaunee and Manitowoc 
  Counties.

* WHEN...From this afternoon through Tuesday afternoon.

* IMPACTS...Dangerous swimming conditions are expected. Strong 
  currents can pull swimmers into deeper water and high waves 
  can sweep people off piers.

* ADDITIONAL DETAILS...Several beaches that will be most 
  susceptible to the dangerous swimming conditions include... 
  Cresent Beach and City of Kewaunee Beach in Kewaunee County. 
  Point Beach, Neshotah Beach and Red Arrow Beach in Manitowoc 
  County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain out of the water to avoid hazardous swimming conditions.

&&

$$

WIZ022-141600-
/O.CON.KGRB.BH.S.0019.260915T0000Z-260916T0000Z/
Door-
247 AM CDT Mon Sep 14 2026

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM THIS EVENING
THROUGH TUESDAY EVENING...

* WHAT...High waves and dangerous currents expected.

* WHERE...Beaches along Lake Michigan in Door County.

* WHEN...From this evening through Tuesday evening.

* IMPACTS...Dangerous swimming conditions are expected. Strong 
  currents can pull swimmers into deeper water and high waves 
  can sweep people off piers.

* ADDITIONAL DETAILS...Several beaches that will be most 
  susceptible to the dangerous swimming conditions include... 
  Rock Island State Beach, Baileys Harbor beaches and Whitefish 
  Dunes Beach in Door County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain out of the water to avoid hazardous swimming conditions.

&&

$$
503 
WHUS43 KGRB 141537
CFWGRB

Coastal Hazard Message
National Weather Service Green Bay WI
1037 AM CDT Mon Sep 14 2026

WIZ040-050-142345-
/O.CON.KGRB.BH.S.0019.260914T2100Z-260915T2100Z/
Kewaunee-Manitowoc-
1037 AM CDT Mon Sep 14 2026

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM 4 PM CDT THIS
AFTERNOON THROUGH TUESDAY AFTERNOON...

* WHAT...High waves and dangerous currents expected.

* WHERE...Beaches along Lake Michigan in Kewaunee and Manitowoc 
  Counties.

* WHEN...From this afternoon through Tuesday afternoon.

* IMPACTS...Dangerous swimming conditions are expected. Strong 
  currents can pull swimmers into deeper water and high waves 
  can sweep people off piers.

* ADDITIONAL DETAILS...Several beaches that will be most 
  susceptible to the dangerous swimming conditions include... 
  Cresent Beach and City of Kewaunee Beach in Kewaunee County. 
  Point Beach, Neshotah Beach and Red Arrow Beach in Manitowoc 
  County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain out of the water to avoid hazardous swimming conditions.

&&

$$

WIZ022-142345-
/O.CON.KGRB.BH.S.0019.260915T0000Z-260916T0000Z/
Door-
1037 AM CDT Mon Sep 14 2026

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM 7 PM CDT THIS
EVENING THROUGH TUESDAY EVENING...

* WHAT...High waves and dangerous currents expected.

* WHERE...Beaches along Lake Michigan in Door County.

* WHEN...From this evening through Tuesday evening.

* IMPACTS...Dangerous swimming conditions are expected. Strong 
  currents can pull swimmers into deeper water and high waves 
  can sweep people off piers.

* ADDITIONAL DETAILS...Several beaches that will be most 
  susceptible to the dangerous swimming conditions include... 
  Rock Island State Beach, Baileys Harbor beaches and Whitefish 
  Dunes Beach in Door County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain out of the water to avoid hazardous swimming conditions.

&&

$$
366 
WHUS43 KGRB 142011
CFWGRB

Coastal Hazard Message
National Weather Service Green Bay WI
311 PM CDT Mon Sep 14 2026

WIZ040-050-150500-
/O.CON.KGRB.BH.S.0019.260914T2100Z-260915T2100Z/
Kewaunee-Manitowoc-
311 PM CDT Mon Sep 14 2026

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH TUESDAY
AFTERNOON...

* WHAT...High waves and dangerous currents expected.

* WHERE...Beaches along Lake Michigan in Kewaunee and Manitowoc 
  Counties.

* WHEN...Through Tuesday afternoon.

* IMPACTS...Dangerous swimming conditions are expected. Strong 
  currents can pull swimmers into deeper water and high waves 
  can sweep people off piers.

* ADDITIONAL DETAILS...Several beaches that will be most 
  susceptible to the dangerous swimming conditions include... 
  Cresent Beach and City of Kewaunee Beach in Kewaunee County. 
  Point Beach, Neshotah Beach and Red Arrow Beach in Manitowoc 
  County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain out of the water to avoid hazardous swimming conditions.

&&

$$

WIZ022-150500-
/O.CON.KGRB.BH.S.0019.260915T0000Z-260916T0000Z/
Door-
311 PM CDT Mon Sep 14 2026

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM 7 PM CDT THIS
EVENING THROUGH TUESDAY EVENING...

* WHAT...High waves and dangerous currents expected.

* WHERE...Beaches along Lake Michigan in Door County.

* WHEN...From 7 PM CDT this evening through Tuesday evening.

* IMPACTS...Dangerous swimming conditions are expected. Strong 
  currents can pull swimmers into deeper water and high waves 
  can sweep people off piers.

* ADDITIONAL DETAILS...Several beaches that will be most 
  susceptible to the dangerous swimming conditions include... 
  Rock Island State Beach, Baileys Harbor beaches and Whitefish 
  Dunes Beach in Door County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain out of the water to avoid hazardous swimming conditions.

&&

$$
757 
WHUS43 KGRB 150149
CFWGRB

Coastal Hazard Message
National Weather Service Green Bay WI
849 PM CDT Mon Sep 14 2026

WIZ022-151100-
/O.CON.KGRB.BH.S.0019.000000T0000Z-260916T0000Z/
Door-
849 PM CDT Mon Sep 14 2026

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH TUESDAY
EVENING...

* WHAT...High waves and dangerous currents expected.

* WHERE...Beaches along Lake Michigan in Door County.

* WHEN...Through Tuesday evening.

* IMPACTS...Dangerous swimming conditions are expected. Strong 
  currents can pull swimmers into deeper water and high waves 
  can sweep people off piers.

* ADDITIONAL DETAILS...Several beaches that will be most 
  susceptible to the dangerous swimming conditions include... 
  Rock Island State Beach, Baileys Harbor beaches and Whitefish 
  Dunes Beach in Door County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain out of the water to avoid hazardous swimming conditions.

&&

$$

WIZ040-050-151100-
/O.CON.KGRB.BH.S.0019.000000T0000Z-260915T2100Z/
Kewaunee-Manitowoc-
849 PM CDT Mon Sep 14 2026

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH TUESDAY
AFTERNOON...

* WHAT...High waves and dangerous currents expected.

* WHERE...Beaches along Lake Michigan in Kewaunee and Manitowoc 
  Counties.

* WHEN...Through Tuesday afternoon.

* IMPACTS...Dangerous swimming conditions are expected. Strong 
  currents can pull swimmers into deeper water and high waves 
  can sweep people off piers.

* ADDITIONAL DETAILS...Several beaches that will be most 
  susceptible to the dangerous swimming conditions include... 
  Cresent Beach and City of Kewaunee Beach in Kewaunee County. 
  Point Beach, Neshotah Beach and Red Arrow Beach in Manitowoc 
  County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain out of the water to avoid hazardous swimming conditions.

&&

$$
883 
WHUS43 KGRB 151046
CFWGRB

Coastal Hazard Message
National Weather Service Green Bay WI
546 AM CDT Tue Sep 15 2026

WIZ022-152100-
/O.CON.KGRB.BH.S.0019.000000T0000Z-260916T0000Z/
Door-
546 AM CDT Tue Sep 15 2026

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH THIS
EVENING...

* WHAT...High waves and dangerous currents expected.

* WHERE...Beaches along Lake Michigan in Door County.

* WHEN...Until 7 PM today.

* IMPACTS...Dangerous swimming conditions are expected. Strong 
  currents can pull swimmers into deeper water and high waves 
  can sweep people off piers.

* ADDITIONAL DETAILS...Several beaches that will be most 
  susceptible to the dangerous swimming conditions include... 
  Rock Island State Beach, Baileys Harbor beaches and Whitefish 
  Dunes Beach in Door County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain out of the water to avoid hazardous swimming conditions.

&&

$$

WIZ040-050-152100-
/O.CON.KGRB.BH.S.0019.000000T0000Z-260915T2100Z/
Kewaunee-Manitowoc-
546 AM CDT Tue Sep 15 2026

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT UNTIL 4 PM CDT THIS
AFTERNOON...

* WHAT...High waves and dangerous currents expected.

* WHERE...Beaches along Lake Michigan in Kewaunee and Manitowoc 
  Counties.

* WHEN...Until 4 PM today.

* IMPACTS...Dangerous swimming conditions are expected. Strong 
  currents can pull swimmers into deeper water and high waves 
  can sweep people off piers.

* ADDITIONAL DETAILS...Several beaches that will be most 
  susceptible to the dangerous swimming conditions include... 
  Cresent Beach and City of Kewaunee Beach in Kewaunee County. 
  Point Beach, Neshotah Beach and Red Arrow Beach in Manitowoc 
  County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain out of the water to avoid hazardous swimming conditions.

&&

$$

mpc
622 
WHUS43 KGRB 152046
CFWGRB

Coastal Hazard Message
National Weather Service Green Bay WI
346 PM CDT Tue Sep 15 2026

WIZ040-050-152200-
/O.EXP.KGRB.BH.S.0019.000000T0000Z-260915T2100Z/
Kewaunee-Manitowoc-
346 PM CDT Tue Sep 15 2026

...BEACH HAZARDS STATEMENT WILL EXPIRE AT 4 PM CDT THIS
AFTERNOON...

Waves have subsided this afternoon, thus the Beach Hazard 
Statement will be allowed to expire at 4 PM. 

$$

WIZ022-160000-
/O.CON.KGRB.BH.S.0019.000000T0000Z-260916T0000Z/
Door-
346 PM CDT Tue Sep 15 2026

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT UNTIL 7 PM CDT THIS
EVENING...

* WHAT...High waves and dangerous currents expected.

* WHERE...Beaches along Lake Michigan in Door County.

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

* IMPACTS...Dangerous swimming conditions are expected. Strong 
  currents can pull swimmers into deeper water and high waves 
  can sweep people off piers.

* ADDITIONAL DETAILS...Several beaches that will be most 
  susceptible to the dangerous swimming conditions include... 
  Rock Island State Beach, Baileys Harbor beaches and Whitefish 
  Dunes Beach in Door County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain out of the water to avoid hazardous swimming conditions.

&&

$$
083 
WHUS43 KGRB 152356
CFWGRB

Coastal Hazard Message
National Weather Service Green Bay WI
656 PM CDT Tue Sep 15 2026

WIZ022-160100-
/O.EXP.KGRB.BH.S.0019.000000T0000Z-260916T0000Z/
Door-
656 PM CDT Tue Sep 15 2026

...BEACH HAZARDS STATEMENT WILL EXPIRE AT 7 PM CDT THIS EVENING...

Waves have subsided, thus the risk of rip currents has ended. 

$$

What forecasters said that day

The local office's own words before this beach hazards statement 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 beach hazards statement went out at Sep 13, 12:12 PM CDT, 1 hour 1 minute earlier. Its key messages:

  • The first widespread frost of the season is expected across the north late tonight into early Monday morning. A few of the typical colder locations could drop to or slightly below freezing for a few hours.
  • A round or two of heavy rain and storms is possible Monday into Tuesday. The severe weather threat is low.
  • Hazardous conditions for small craft are likely Monday afternoon into Tuesday afternoon due to gusty southerly winds or high waves.
  • High waves will lead to an increased risk of rip currents at Lake Michigan beaches Monday afternoon into Tuesday afternoon.
Area forecast discussion, Sep 13, 12:12 PM CDT, 1 hour 1 minute before
Area Forecast Discussion
National Weather Service Green Bay WI
1212 PM CDT Sun Sep 13 2026

Updated aviation portion for 18Z TAF issuance

.KEY MESSAGES...

- The first widespread frost of the season is expected across the
  north late  tonight into early Monday morning. A few of the
  typical colder locations could drop to or slightly below
  freezing for a few hours.

- A round or two of heavy rain and storms is possible Monday into
  Tuesday. The severe weather threat is low.

- Hazardous conditions for small craft are likely Monday afternoon
  into Tuesday afternoon due to gusty southerly winds or high
  waves.

- High waves will lead to an increased risk of rip currents at
  Lake Michigan beaches Monday afternoon into Tuesday afternoon.

&&

.DISCUSSION...
Issued at 233 AM CDT Sun Sep 13 2026

Today: Shortwave currently dropping south across northern MN will
move across the region this morning bringing mostly cloudy skies and
possibly a brief sprinkle south of HWY 10. High pressure works back
in this afternoon retuning dry and partly sunny skies to the area.
With high pressure overhead tonight expect clear and calm conditions
which will allow temperatures to fall into the low to middle 30s
across north-central WI. Widespread frost is possible along and
north of HWY 8, if you have cold sensitive plants plan to bring them
indoors or cover them.

Heavy Rain Monday into Tuesday: A strong low pressure system,
currernly coming onshore over the PNW will track into the northern
Plains Monday. Ahead of this system strong isentropic ascent is
expected over WI in association with a LLJ. This will likely lead to
a widespread area of moderate rain pushing into the region Monday
afternoon and continuing into Tuesday. PWATs with this system are
expected to climb to near 2" (around the 99th percentile of
climatology) most areas have at a 70-90% chance for at least 1" of
rain. Pockets of higher amounts of 2-3" are possible, mainly across
central WI, with the NBM showing a 30-50% chance for over 2" west of
I-39. The severe storm threat with this system appears rather low
with a lack in much instability and a strong near surface
temperatures inversion.

Rest of Next Week: A baroclinic zone is expected set up over or near
the forecast area for the middle and end of next week. This will
keep a 30-50% chance for showers and occasional thunderstorms
Wednesday through Friday, however, it will likely not rain that
entire period. Temperatures will hover near to slightly below normal
next week depending on where the boundary sets up each day.

&&

.AVIATION...for 18Z TAF Issuance
Issued at 1208 PM CDT Sun Sep 13 2026

VFR conditions will contine you through Monday morning. Areas
of frost are expected across north-central and far northeast
WI late tonight. On Monday, rain will overspread the area
during the afternoon and evening, with scattered thunderstorms
embedded in the large area of rain. CIGS are likely to drop
into the MVFR category, with areas of IFR CIGS expected. The
rain should end late Monday night into early Tuesday morning.

&&

.MARINE...
Issued at 233 AM CDT Sun Sep 13 2026

Another period of gusty southerly winds will lead to increasing
waves, along with an increasing risk of rip currents Monday into
Tuesday. A Small Craft Advisory or Gale Warning and Beach Hazard
Statements will likely be needed.

&&

.GRB WATCHES/WARNINGS/ADVISORIES...
Frost Advisory from midnight tonight to 8 AM CDT Monday for
WIZ005-010>012-018.
&&

DISCUSSION.....GK
AVIATION.......Eckberg
MARINE.........GK
Hazardous weather outlook, Sep 13, 1:11 PM CDT, 2 minutes before
Hazardous Weather Outlook
National Weather Service Green Bay WI
111 PM CDT Sun Sep 13 2026

WIZ005-010>013-018>022-030-031-035>040-045-048>050-073-074-141815-
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-
111 PM CDT Sun Sep 13 2026

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

.DAY ONE...Rest of the Afternoon and Tonight

The first widespread frost of the season is expected across
the north late tonight into early Monday morning. A few of the
typical colder locations could drop to or slightly below freezing
for a few hours. A Frost Advisory remains in effect for portions
of north-central and far northeast WI.

.DAYS TWO THROUGH SEVEN...Monday through Sunday

There is a chance of thunderstorms at times late Monday afternoon
into Tuesday morning. The severe weather risk is very low, but
the potential exists for locally heavy rainfall. Additional
chances of thunderstorms are expected later this weekend into next
weekend. It is too early to determine if any of the storms would
become severe.

There is an increased risk of rip currents on Lake Michigan
beaches Monday afternoon into Tuesday afternoon.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed this afternoon and tonight.

LMZ521-522-541>543-141815-
The Bay of Green Bay south of a line from Cedar River MI to Rock
Island Passage-Lake Michigan from Washington Island to Sheboygan-
111 PM CDT Sun Sep 13 2026

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

.DAY ONE...Rest of the Afternoon and Tonight

Gusty northwest winds could bring hazardous conditions for small
craft for the rest of the afternoon. A Small Craft Advisory is in
effect for the bay and on the lake from Rock Island Passage to
Two Rivers until 7 PM.

.DAYS TWO THROUGH SEVEN...Monday through Sunday

Hazardous conditions for small craft will return Monday afternoon
and continue into Tuesday. Building waves and increasing southerly
winds will bring hazardous conditions on the bay and lake by mid
afternoon, resulting in a Small Craft Advisory from 4 PM to 10 PM
Monday. A Gale Watch is in effect from 10 PM Monday to 7 AM
Tuesday for southerly gales to around 35 knots. Additional marine
headlines will be needed on Wednesday due to gusty winds and high
waves.

Thunderstorms are possible Monday night, and then again Wednesday
into next weekend that may pose a hazard for mariners.

Eckberg

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 13, 2:08 AM CDTFrost AdvisoryGRBFlorence, Forest, Langlade, Lincoln, Marinette, Oconto and 2 more30 hr
Sep 13, 4:31 AM CDTSmall Craft AdvisoryGRB14 hr
Sep 13, 12:46 PM CDTGale WatchGRB9 hr
Sep 13, 12:46 PM CDTSmall Craft AdvisoryGRB32 hr

Nearby

Beach Hazards Statements in Wisconsin, 2026Every beach hazards statement in 2026

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.