Alert archive / Wisconsin / Beach Hazards Statements in 2021

Beach Hazards Statement 16, NWS Green Bay, WI

September 24, 2021Door County, Kewaunee County, Manitowoc County, Wisconsin

NWS Green Bay, WI issued this beach hazards statement at Sep 24, 2021, 10:11 AM CDT for Door County, Kewaunee County, Manitowoc County, Wisconsin. It took effect at Sep 24, 2021, 4:00 PM CDT. It was in force for 9 hr.

The area

The counties it named.

The facts

Issued
Sep 24, 2021, 10:11 AM CDT (15:11 UTC)
In effect from
Sep 24, 2021, 4:00 PM CDT
Expired
Sep 25, 2021, 1:00 AM CDT
In force
9 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 15:13 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, 3.2 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 12:00Z on 2021-09-24Temperature 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°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 2021-09-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 101 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1365 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
101 m²/s²
0-3 km storm-relative helicity
136 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

423 
WHUS43 KGRB 241511
CFWGRB

Coastal Hazard Message
National Weather Service Green Bay WI
1011 AM CDT Fri Sep 24 2021

WIZ022-040-050-242315-
/O.NEW.KGRB.BH.S.0016.210924T2100Z-210925T0600Z/
Door-Kewaunee-Manitowoc-
1011 AM CDT Fri Sep 24 2021

...BEACH HAZARDS STATEMENT IN EFFECT FROM 4 PM CDT THIS AFTERNOON
THROUGH LATE TONIGHT...

* WHAT...High waves and strong currents resulting in dangerous 
  swimming conditions.

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

* WHEN...From 4 PM CDT this afternoon through late tonight.

* 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.

&&

$$
2 follow-up statements
851 
WHUS43 KGRB 242121
CFWGRB

Coastal Hazard Message
National Weather Service Green Bay WI
421 PM CDT Fri Sep 24 2021

WIZ022-040-050-250530-
/O.CON.KGRB.BH.S.0016.000000T0000Z-210925T0600Z/
Door-Kewaunee-Manitowoc-
421 PM CDT Fri Sep 24 2021

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT UNTIL 1 AM CDT
SATURDAY...

* WHAT...High waves and strong currents resulting in dangerous 
  swimming conditions.

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

* WHEN...Until 1 AM CDT Saturday.

* 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.

&&

$$
Eckberg
287 
WHUS43 KGRB 250144
CFWGRB

Coastal Hazard Message
National Weather Service Green Bay WI
844 PM CDT Fri Sep 24 2021

WIZ022-040-050-250600-
/O.CON.KGRB.BH.S.0016.000000T0000Z-210925T0600Z/
Door-Kewaunee-Manitowoc-
844 PM CDT Fri Sep 24 2021

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT UNTIL 1 AM CDT
SATURDAY...

* WHAT...High waves and strong currents resulting in dangerous
  swimming conditions which should gradually subside by early
  Saturday morning.

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

* WHEN...Until 1 AM CDT Saturday.

* 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.

&&

$$
Eckberg

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 24, 4:14 AM CDTSmall Craft AdvisoryGRB39 hr
Sep 24, 5:31 PM CDTSpecial Weather StatementGRBMenominee, Oconto, Outagamie, Shawano, Waupaca, Waushara and 1 more44 min

Nearby

Beach Hazards Statements in Wisconsin, 2021Every beach hazards statement in 2021

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.