Alert archive / Wisconsin / Beach Hazards Statements in 2020

Beach Hazards Statement 7, NWS Green Bay, WI

August 7, 2020Door County, Kewaunee County, Manitowoc County, Wisconsin

NWS Green Bay, WI issued this beach hazards statement at Aug 7, 2020, 3:23 PM CDT for Door County, Kewaunee County, Manitowoc County, Wisconsin. It took effect at Aug 8, 2020, 10:00 AM CDT. It was in force for 18 hr.

The area

The counties it named.

The facts

Issued
Aug 7, 2020, 3:23 PM CDT (20:23 UTC)
In effect from
Aug 8, 2020, 10:00 AM CDT
Expired
Aug 9, 2020, 4:00 AM CDT
In force
18 hr
Issued by
NWS Green Bay, WI

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

The nearest sounding before it

Detroit, MI (KDTX), launched 12:00Z, 8.4 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 2020-08-07Temperature 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, Detroit, MI at 12:00Z on 2020-08-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -10 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
3525 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
-10 m²/s²
0-3 km storm-relative helicity
24 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

549 
WHUS43 KGRB 072023
CFWGRB

Coastal Hazard Message
National Weather Service Green Bay WI
323 PM CDT Fri Aug 7 2020

WIZ022-040-050-080430-
/O.NEW.KGRB.BH.S.0007.200808T1500Z-200809T0900Z/
Door-Kewaunee-Manitowoc-
323 PM CDT Fri Aug 7 2020

...BEACH HAZARDS STATEMENT IN EFFECT FROM SATURDAY MORNING
THROUGH LATE SATURDAY NIGHT...

* WHAT...Dangerous swimming conditions are expected due to
  increasing waves and the danger of rip currents along the Lake
  Michigan shoreline.

* WHERE...Door, Kewaunee and Manitowoc Counties.

* WHEN...From Saturday morning through late Saturday night.

* IMPACTS...Large waves and strong currents will make swimming 
  hazardous..

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain out of the water to avoid hazardous swimming conditions.

&&

$$
6 follow-up statements
918 
WHUS43 KGRB 080237
CFWGRB

Coastal Hazard Message
National Weather Service Green Bay WI
937 PM CDT Fri Aug 7 2020

WIZ022-040-050-081045-
/O.CON.KGRB.BH.S.0007.200808T1500Z-200809T0900Z/
Door-Kewaunee-Manitowoc-
937 PM CDT Fri Aug 7 2020

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM SATURDAY
MORNING THROUGH LATE SATURDAY NIGHT...

* WHAT...Dangerous swimming conditions are expected, due to 
  increasing waves and the danger of rip currents along the Lake 
  Michigan shoreline.

* WHERE...Door, Kewaunee and Manitowoc Counties.

* WHEN...From Saturday morning through late Saturday night.

* IMPACTS...Large waves and strong currents will make swimming 
  hazardous.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain out of the water to avoid hazardous swimming conditions.

&&

$$
761 
WHUS43 KGRB 080922
CFWGRB

Coastal Hazard Message
National Weather Service Green Bay WI
422 AM CDT Sat Aug 8 2020

WIZ022-040-050-081730-
/O.CON.KGRB.BH.S.0007.200808T1500Z-200809T0900Z/
Door-Kewaunee-Manitowoc-
422 AM CDT Sat Aug 8 2020

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM 10 AM CDT THIS
MORNING THROUGH LATE TONIGHT...

* WHAT...Dangerous swimming conditions are expected, due to 
  increasing waves and the danger of rip currents along the Lake 
  Michigan shoreline.

* WHERE...Door, Kewaunee and Manitowoc Counties.

* WHEN...From Saturday morning through late Saturday night.

* IMPACTS...Large waves and strong currents will make swimming
  hazardous.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain out of the water to avoid hazardous swimming conditions.

&&

$$
045 
WHUS43 KGRB 081506
CFWGRB

Coastal Hazard Message
National Weather Service Green Bay WI
1006 AM CDT Sat Aug 8 2020

WIZ022-040-050-082315-
/O.CON.KGRB.BH.S.0007.000000T0000Z-200809T0900Z/
Door-Kewaunee-Manitowoc-
1006 AM CDT Sat Aug 8 2020

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH LATE
TONIGHT...

* WHAT...Dangerous swimming conditions are expected, due to 
  increasing waves and the danger of rip currents along the Lake 
  Michigan shoreline.

* WHERE...Door, Kewaunee and Manitowoc Counties.

* WHEN...Thru late tonight.

* IMPACTS...Large waves and strong currents will make swimming 
  hazardous.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain out of the water to avoid hazardous swimming conditions.

&&

$$
255 
WHUS43 KGRB 082014
CFWGRB

Coastal Hazard Message
National Weather Service Green Bay WI
314 PM CDT Sat Aug 8 2020

WIZ022-040-050-090415-
/O.CON.KGRB.BH.S.0007.000000T0000Z-200809T0900Z/
Door-Kewaunee-Manitowoc-
314 PM CDT Sat Aug 8 2020

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH LATE
TONIGHT...

* WHAT...Dangerous swimming conditions are expected, due to high waves
  and the danger of rip currents along the Lake Michigan 
  shoreline.

* WHERE...Door, Kewaunee and Manitowoc Counties.

* WHEN...Thru late tonight.

* IMPACTS...Large waves and strong currents will make swimming 
  hazardous.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain out of the water to avoid hazardous swimming conditions.

&&

$$
906 
WHUS43 KGRB 090230
CFWGRB

Coastal Hazard Message
National Weather Service Green Bay WI
930 PM CDT Sat Aug 8 2020

WIZ022-040-050-090900-
/O.CON.KGRB.BH.S.0007.000000T0000Z-200809T0900Z/
Door-Kewaunee-Manitowoc-
930 PM CDT Sat Aug 8 2020

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT UNTIL 4 AM CDT
SUNDAY...

* WHAT...Dangerous swimming conditions are expected, due to high 
  waves and the danger of rip currents along the Lake Michigan 
  shoreline.

* WHERE...Door, Kewaunee and Manitowoc Counties.

* WHEN...Thru late tonight.

* IMPACTS...Large waves and strong currents will make swimming 
  hazardous.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain out of the water to avoid hazardous swimming conditions.

&&

$$
629 
WHUS43 KGRB 090851
CFWGRB

Coastal Hazard Message
National Weather Service Green Bay WI
351 AM CDT Sun Aug 9 2020

WIZ022-040-050-091000-
/O.EXP.KGRB.BH.S.0007.000000T0000Z-200809T0900Z/
Door-Kewaunee-Manitowoc-
351 AM CDT Sun Aug 9 2020

...BEACH HAZARDS STATEMENT WILL EXPIRE AT 4 AM CDT EARLY THIS
MORNING...

Winds and waves are expected to slowly subside through the rest of
the morning hours; however, some lingering currents may still pose
a hazard near piers and breakwalls.

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 7, 3:21 PM CDTSmall Craft AdvisoryGRB37 hr

Nearby

Beach Hazards Statements in Wisconsin, 2020Every beach hazards statement in 2020

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.