Alert archive / Wisconsin / Beach Hazards Statements in 2023

Beach Hazards Statement 7, NWS Green Bay, WI

August 29, 2023Door County, Kewaunee County, Manitowoc County, Wisconsin

NWS Green Bay, WI issued this beach hazards statement at Aug 29, 2023, 3:42 AM CDT for Door County, Kewaunee County, Manitowoc County, Wisconsin. It took effect at Aug 29, 2023, 4:00 PM CDT. It was in force for 15 hr.

The area

The counties it named.

The facts

Issued
Aug 29, 2023, 3:42 AM CDT (08:42 UTC)
In effect from
Aug 29, 2023, 4:00 PM CDT
Expired
Aug 30, 2023, 6:43 AM CDT
In force
15 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 08:42 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 00:00Z, 8.7 hours before the alert went out and 46 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 00:00Z on 2023-08-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 7 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Green Bay/Straub, WI at 00:00Z on 2023-08-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 63 square meters per square second.193958Sfc1 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
7 J/kg
Mixed-layer CIN
-72 J/kg
Mixed-layer LCL
1409 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
63 m²/s²
0-3 km storm-relative helicity
99 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

As transmitted.

407 
WHUS43 KGRB 290842
CFWGRB

Coastal Hazard Message
National Weather Service Green Bay WI
342 AM CDT Tue Aug 29 2023

WIZ022-040-050-291645-
/O.NEW.KGRB.BH.S.0007.230829T2100Z-230830T1200Z/
Door-Kewaunee-Manitowoc-
342 AM CDT Tue Aug 29 2023

...BEACH HAZARDS STATEMENT IN EFFECT FROM THIS AFTERNOON THROUGH
WEDNESDAY MORNING...

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

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

* WHEN...From this afternoon through Wednesday morning.

* 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. 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.

&&

$$
4 follow-up statements
039 
WHUS43 KGRB 291528
CFWGRB

Coastal Hazard Message
National Weather Service Green Bay WI
1028 AM CDT Tue Aug 29 2023

WIZ022-040-050-292330-
/O.CON.KGRB.BH.S.0007.230829T2100Z-230830T1200Z/
Door-Kewaunee-Manitowoc-
1028 AM CDT Tue Aug 29 2023

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

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

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

* WHEN...From this afternoon through Wednesday morning.

* 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. 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
878 
WHUS43 KGRB 292303
CFWGRB

Coastal Hazard Message
National Weather Service Green Bay WI
603 PM CDT Tue Aug 29 2023

WIZ022-040-050-300715-
/O.CON.KGRB.BH.S.0007.000000T0000Z-230830T1200Z/
Door-Kewaunee-Manitowoc-
603 PM CDT Tue Aug 29 2023

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH WEDNESDAY
MORNING...

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

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

* WHEN...Through Wednesday morning.

* 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. 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.

&&

$$
452 
WHUS43 KGRB 300655
CFWGRB

Coastal Hazard Message
National Weather Service Green Bay WI
155 AM CDT Wed Aug 30 2023

WIZ022-040-050-301200-
/O.CON.KGRB.BH.S.0007.000000T0000Z-230830T1200Z/
Door-Kewaunee-Manitowoc-
155 AM CDT Wed Aug 30 2023

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT UNTIL 7 AM CDT THIS
MORNING...

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

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

* WHEN...Until 7 AM CDT this morning.

* 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. 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.

&&

$$
656 
WHUS43 KGRB 301143
CFWGRB

Coastal Hazard Message
National Weather Service Green Bay WI
643 AM CDT Wed Aug 30 2023

WIZ022-040-050-301245-
/O.CAN.KGRB.BH.S.0007.000000T0000Z-230830T1200Z/
Door-Kewaunee-Manitowoc-
643 AM CDT Wed Aug 30 2023

...BEACH HAZARDS STATEMENT IS CANCELLED...

Waves continue to subside early this morning and the threat for
dangerous currents has diminished.

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 28, 10:01 PM CDTSpecial Weather StatementGRBForest, Lincoln, Oneida59 min
Aug 29, 3:40 AM CDTSmall Craft AdvisoryGRB27 hr

Nearby

Beach Hazards Statements in Wisconsin, 2023Every beach hazards statement 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.