Alert archive / Wisconsin / Beach Hazards Statements in 2020

Beach Hazards Statement 4, NWS Green Bay, WI

July 17, 2020Door County, Kewaunee County, Manitowoc County, Wisconsin

NWS Green Bay, WI issued this beach hazards statement at Jul 17, 2020, 4:42 PM CDT for Door County, Kewaunee County, Manitowoc County, Wisconsin. It took effect at Jul 18, 2020, 1:00 PM CDT. It was in force for 9 hr.

The area

The counties it named.

The facts

Issued
Jul 17, 2020, 4:42 PM CDT (21:42 UTC)
In effect from
Jul 18, 2020, 1:00 PM CDT
Expired
Jul 18, 2020, 9:37 PM 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 21:45 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, 9.7 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 12:00Z on 2020-07-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1 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 12:00Z on 2020-07-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 98 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
1 J/kg
Mixed-layer CIN
-234 J/kg
Mixed-layer LCL
1406 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
98 m²/s²
0-3 km storm-relative helicity
250 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

428 
WHUS43 KGRB 172142
CFWGRB

Coastal Hazard Message
National Weather Service Green Bay WI
442 PM CDT Fri Jul 17 2020

WIZ022-040-050-180545-
/O.NEW.KGRB.BH.S.0004.200718T1800Z-200719T0100Z/
Door-Kewaunee-Manitowoc-
442 PM CDT Fri Jul 17 2020

...BEACH HAZARDS STATEMENT IN EFFECT FROM SATURDAY AFTERNOON
THROUGH SATURDAY EVENING...

* WHAT...South wind 15 to 25 mph to produce waves of 3 to 5 feet.

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

* WHEN...From Saturday afternoon through Saturday evening.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain out of the water to avoid hazardous swimming conditions.

&&

$$

Bersch
5 follow-up statements
647 
WHUS43 KGRB 180227
CFWGRB

Coastal Hazard Message
National Weather Service Green Bay WI
927 PM CDT Fri Jul 17 2020

WIZ022-040-050-181030-
/O.EXT.KGRB.BH.S.0004.200718T1800Z-200719T1500Z/
Door-Kewaunee-Manitowoc-
927 PM CDT Fri Jul 17 2020

...BEACH HAZARDS STATEMENT NOW IN EFFECT FROM SATURDAY AFTERNOON
THROUGH SUNDAY MORNING...

* WHAT...South wind 15 to 25 mph to produce waves of 3 to 5 feet.

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

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

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain out of the water to avoid hazardous swimming conditions.

&&

$$

Bersch
317 
WHUS43 KGRB 181031
CFWGRB

Coastal Hazard Message
National Weather Service Green Bay WI
531 AM CDT Sat Jul 18 2020

WIZ022-040-050-181845-
/O.CON.KGRB.BH.S.0004.200718T1800Z-200719T1500Z/
Door-Kewaunee-Manitowoc-
531 AM CDT Sat Jul 18 2020

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM 1 PM CDT THIS
AFTERNOON THROUGH SUNDAY MORNING...

* WHAT...South wind 15 to 25 mph will produce waves of 3 to 5 feet.

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

* WHEN...From 1 PM CDT this afternoon through Sunday morning.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain out of the water to avoid hazardous swimming conditions.

&&

$$
221 
WHUS43 KGRB 181040
CFWGRB

Coastal Hazard Message
National Weather Service Green Bay WI
540 AM CDT Sat Jul 18 2020

WIZ022-040-050-181845-
/O.CON.KGRB.BH.S.0004.200718T1800Z-200719T1500Z/
Door-Kewaunee-Manitowoc-
540 AM CDT Sat Jul 18 2020

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM 1 PM CDT THIS
AFTERNOON THROUGH SUNDAY MORNING...

* WHAT...South wind 15 to 25 mph will produce waves of 3 to 5 
  feet.

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

* WHEN...From 1 PM CDT this afternoon through Sunday morning.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain out of the water to avoid hazardous swimming conditions.

&&

$$
077 
WHUS43 KGRB 181832
CFWGRB

Coastal Hazard Message
National Weather Service Green Bay WI
Issued by National Weather Service Milwaukee/Sullivan WI
132 PM CDT Sat Jul 18 2020

WIZ022-040-050-190245-
/O.CON.KGRB.BH.S.0004.000000T0000Z-200719T1500Z/
Door-Kewaunee-Manitowoc-
132 PM CDT Sat Jul 18 2020

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

* WHAT...South wind 15 to 25 mph will produce waves of 3 to 5 
  feet.

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

* WHEN...Through Sunday morning.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain out of the water to avoid hazardous swimming conditions.

&&

$$
621 
WHUS43 KGRB 190237
CFWGRB

Coastal Hazard Message
National Weather Service Green Bay WI
937 PM CDT Sat Jul 18 2020

WIZ022-040-050-190345-
/O.CAN.KGRB.BH.S.0004.000000T0000Z-200719T1500Z/
Door-Kewaunee-Manitowoc-
937 PM CDT Sat Jul 18 2020

...BEACH HAZARDS STATEMENT IS CANCELLED...

Waves will continue to subside through the evening hours, so the
beach hazard statement has been cancelled.

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 17, 2:30 PM CDTHeat AdvisoryGRBBrown, Calumet, Kewaunee, Manitowoc, Marathon, Menominee and 8 more30 hr
Jul 17, 3:49 PM CDTSmall Craft AdvisoryGRB36 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.