Alert archive / Wisconsin / Beach Hazards Statements in 2020

Beach Hazards Statement 14, NWS Green Bay, WI

September 24, 2020Door County, Kewaunee County, Manitowoc County, Wisconsin

NWS Green Bay, WI issued this beach hazards statement at Sep 24, 2020, 9:05 PM CDT for Door County, Kewaunee County, Manitowoc County, Wisconsin. It took effect at Sep 25, 2020, 3:00 PM CDT. It was in force for 11 hr.

The area

The counties it named.

The facts

Issued
Sep 24, 2020, 9:05 PM CDT (02:05 UTC)
In effect from
Sep 25, 2020, 3:00 PM CDT
Expired
Sep 26, 2020, 2:28 AM CDT
In force
11 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 02:05 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, 2.1 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 2020-09-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 128 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 2020-09-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 47 square meters per square second.1939Sfc1 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
128 J/kg
Mixed-layer CIN
-23 J/kg
Mixed-layer LCL
650 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
47 m²/s²
0-3 km storm-relative helicity
102 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

The text

As transmitted.

729 
WHUS43 KGRB 250205
CFWGRB

Coastal Hazard Message
National Weather Service Green Bay WI
905 PM CDT Thu Sep 24 2020

WIZ022-040-050-251015-
/O.NEW.KGRB.BH.S.0014.200925T2000Z-200926T1200Z/
Door-Kewaunee-Manitowoc-
905 PM CDT Thu Sep 24 2020

...BEACH HAZARDS STATEMENT IN EFFECT FROM FRIDAY AFTERNOON
THROUGH SATURDAY MORNING...

* WHAT...Large waves and dangerous currents will result in 
  hazardous swimming conditions along Lake Michigan beaches.

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

* WHEN...From Friday afternoon through Saturday morning.

* IMPACTS...Strong currents can pull swimmers into deeper water. 
  High waves can sweep people off piers and breakwalls.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain out of the water to avoid hazardous swimming conditions.

&&

$$

mpc
5 follow-up statements
001 
WHUS43 KGRB 251011
CFWGRB

Coastal Hazard Message
National Weather Service Green Bay WI
511 AM CDT Fri Sep 25 2020

WIZ022-040-050-251815-
/O.CON.KGRB.BH.S.0014.200925T2000Z-200926T1200Z/
Door-Kewaunee-Manitowoc-
511 AM CDT Fri Sep 25 2020

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM 3 PM CDT THIS
AFTERNOON THROUGH SATURDAY MORNING...

* WHAT...Large waves and dangerous currents will result in 
  hazardous swimming conditions along Lake Michigan beaches.

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

* WHEN...this afternoon through Saturday morning.

* IMPACTS...Strong currents can pull swimmers into deeper water. 
  High waves can sweep people off piers and breakwalls.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain out of the water to avoid hazardous swimming conditions.

&&

$$
579 
WHUS43 KGRB 251617
CFWGRB

Coastal Hazard Message
National Weather Service Green Bay WI
1117 AM CDT Fri Sep 25 2020

WIZ022-040-050-260000-
/O.CON.KGRB.BH.S.0014.200925T2000Z-200926T1200Z/
Door-Kewaunee-Manitowoc-
1117 AM CDT Fri Sep 25 2020

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM 3 PM CDT THIS
AFTERNOON THROUGH SATURDAY MORNING...

* WHAT...Large waves and dangerous currents will result in 
  hazardous swimming conditions along Lake Michigan beaches.

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

* WHEN...This afternoon through Saturday morning.

* IMPACTS...Strong currents can pull swimmers into deeper water. 
  High waves can sweep people off piers and breakwalls.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain out of the water to avoid hazardous swimming conditions.

&&

$$

AK
934 
WHUS43 KGRB 252012
CFWGRB

Coastal Hazard Message
National Weather Service Green Bay WI
312 PM CDT Fri Sep 25 2020

WIZ022-040-050-260415-
/O.CON.KGRB.BH.S.0014.000000T0000Z-200926T1200Z/
Door-Kewaunee-Manitowoc-
312 PM CDT Fri Sep 25 2020

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

* WHAT...Large waves and dangerous currents will result in 
  hazardous swimming conditions along Lake Michigan beaches.

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

* WHEN...This afternoon through Saturday morning.

* IMPACTS...Strong currents can pull swimmers into deeper water. 
  High waves can sweep people off piers and breakwalls.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain out of the water to avoid hazardous swimming conditions.

&&

$$
200 
WHUS43 KGRB 260245
CFWGRB

Coastal Hazard Message
National Weather Service Green Bay WI
945 PM CDT Fri Sep 25 2020

WIZ022-040-050-261045-
/O.CON.KGRB.BH.S.0014.000000T0000Z-200926T1200Z/
Door-Kewaunee-Manitowoc-
945 PM CDT Fri Sep 25 2020

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT UNTIL 7 AM CDT
SATURDAY...

* WHAT...Large waves and dangerous currents will result in 
  hazardous swimming conditions along Lake Michigan beaches.

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

* WHEN...This afternoon through Saturday morning.

* IMPACTS...Strong currents can pull swimmers into deeper water. 
  High waves can sweep people off piers and breakwalls.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain out of the water to avoid hazardous swimming conditions.

&&

$$
858 
WHUS43 KGRB 260728
CFWGRB

Coastal Hazard Message
National Weather Service Green Bay WI
228 AM CDT Sat Sep 26 2020

WIZ022-040-050-260830-
/O.CAN.KGRB.BH.S.0014.000000T0000Z-200926T1200Z/
Door-Kewaunee-Manitowoc-
228 AM CDT Sat Sep 26 2020

...BEACH HAZARDS STATEMENT IS CANCELLED...

Winds and waves have diminished and beach hazard criteria are no
longer being met. Remember to always use caution in the water.


$$

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 24, 9:06 PM CDTSmall Craft AdvisoryGRB29 hr
Sep 25, 2:00 AM CDTDense Fog AdvisoryGRBBrown, Calumet, Marathon, Outagamie, Portage, Shawano and 4 more5 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; radar from the NEXRAD Level II archive.