Alert archive / Wisconsin / Special Weather Statements in 2021

Special Weather Statement, NWS Milwaukee, WI

August 6, 2021Calumet County, Wisconsin

NWS Milwaukee, WI issued this special weather statement at Aug 6, 2021, 3:06 PM CDT for Calumet County, Wisconsin. It was in force for 24 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Aug 6, 2021, 3:06 PM CDT (20:06 UTC)
Expired
Aug 6, 2021, 3:30 PM CDT
In force
24 min
Issued by
NWS Milwaukee, WI
Hail
0.50 in
Wind
30

County Calumet County, WI

The radar

The Green Bay radar (KGRB), 68 km from the middle of the area, began a volume at 20:09 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, 8.1 hours before the alert went out and 66 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 2021-08-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 132 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 2021-08-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 84 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
132 J/kg
Mixed-layer CIN
-114 J/kg
Mixed-layer LCL
962 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
84 m²/s²
0-3 km storm-relative helicity
98 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

885 
WWUS83 KMKX 062006
SPSMKX

Special Weather Statement
National Weather Service Milwaukee/Sullivan WI
306 PM CDT Fri Aug 6 2021
 
WIZ051-052-062030-
Sheboygan WI-Fond Du Lac WI-
306 PM CDT Fri Aug 6 2021

...A strong thunderstorm will impact portions of northeastern Fond du
Lac and northwestern Sheboygan Counties through 330 PM CDT...

At 306 PM CDT, Doppler radar was tracking a strong thunderstorm near
St Anna, or 13 miles northeast of Fond Du Lac, moving east at 15 mph.

HAZARD...Winds in excess of 30 mph and half inch hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around 
         unsecured objects. Minor damage to outdoor objects is 
         possible.

Locations impacted include...
Elkhart Lake, Mount Calvary, St. Cloud, Calvary, Marytown, Johnsburg,
Pipe and Town of Forest.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building. 

&&

LAT...LON 4389 8816 4389 8792 4383 8789 4379 8825
      4391 8834 4394 8827 4394 8817
TIME...MOT...LOC 2006Z 247DEG 15KT 4386 8820 

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...30 MPH

$$

HANSEN

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 6, 3:44 PM CDTSpecial Weather StatementMKXSheboygan31 min
Aug 6, 3:48 PM CDTSpecial Marine WarningMKX42 min
Aug 6, 4:04 PM CDTSevere Thunderstorm WarningMKXFond du Lac, Sheboygan41 min
Aug 6, 4:09 PM CDTSevere Thunderstorm WarningMKXDodge, Fond du Lac39 min
Aug 6, 4:21 PM CDTSevere Thunderstorm WarningMKXSheboygan24 min
Aug 6, 4:23 PM CDTSpecial Marine WarningMKX52 min
Aug 6, 4:38 PM CDTSevere Thunderstorm WarningMKXSheboygan52 min
Aug 6, 4:41 PM CDTSpecial Marine WarningMKX64 min
Aug 6, 4:58 PM CDTSevere Thunderstorm WarningMKXDodge, Jefferson32 min
Aug 6, 5:06 PM CDTSevere Thunderstorm WarningMKXOzaukee, Sheboygan24 min
Aug 6, 5:08 PM CDTSpecial Marine WarningMKX52 min
Aug 6, 5:23 PM CDTSpecial Marine WarningMKX111 min
Aug 6, 5:26 PM CDTSpecial Weather StatementMKXDodge, Ozaukee, Washington, Waukesha94 min
Aug 6, 6:22 PM CDTSevere Thunderstorm WarningMKXJefferson38 min
Aug 6, 6:53 PM CDTSpecial Weather StatementMKXJefferson, Milwaukee, Waukesha82 min

Nearby

Special Weather Statements in Wisconsin, 2021Every special weather 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.