Alert archive / Wisconsin / Special Weather Statements in 2021

Special Weather Statement, NWS Milwaukee, WI

June 24, 2021Iowa County, Wisconsin

NWS Milwaukee, WI issued this special weather statement at Jun 24, 2021, 10:13 AM CDT for Iowa County, Wisconsin. It was in force for 47 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
Jun 24, 2021, 10:13 AM CDT (15:13 UTC)
Expired
Jun 24, 2021, 11:00 AM CDT
In force
47 min
Issued by
NWS Milwaukee, WI

County Iowa County, WI

The radar

The La Crosse radar (KARX), 114 km from the middle of the area, began a volume at 15:15 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

Davenport, (KDVN), launched 12:00Z, 3.2 hours before the alert went out and 174 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, Davenport, at 12:00Z on 2021-06-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 389 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, Davenport, at 12:00Z on 2021-06-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 166 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
389 J/kg
Mixed-layer CIN
-353 J/kg
Mixed-layer LCL
1072 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
166 m²/s²
0-3 km storm-relative helicity
167 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.5

Open this sounding in Storm Lab

The text

As transmitted.

985 
WWUS83 KMKX 241513
SPSMKX

Special Weather Statement
National Weather Service Milwaukee/Sullivan WI
1013 AM CDT Thu Jun 24 2021

WIZ056-062-063-241600-
Iowa-Sauk-Dane-

...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN IOWA...WEST CENTRAL
DANE AND SOUTH CENTRAL SAUK COUNTIES...

At 1012 AM CDT, a strong thunderstorm was located near Spring Green,
or 9 miles north of Dodgeville, moving east at 30 mph.

Half inch hail is possible with this storm.

Locations impacted include...
Mazomanie, Spring Green, Black Earth, Barneveld, Blue Mounds, Arena,
Clyde, Blue Mound St Park and Governor Dodge St Park.

If outdoors, consider seeking shelter inside a building.

LAT...LON 4318 9023 4317 9020 4320 9019 4332 8978
      4303 8970 4300 9027 4316 9031
TIME...MOT...LOC 1512Z 258DEG 26KT 4310 9012 

$$

CMILLER

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 24, 8:26 AM CDTSpecial Weather StatementMKXFond du Lac, Green Lake, Marquette34 min
Jun 24, 8:36 AM CDTSpecial Weather StatementMKXSheboygan54 min
Jun 24, 9:07 AM CDTSpecial Weather StatementMKXFond du Lac, Green Lake53 min
Jun 24, 9:27 AM CDTSevere Thunderstorm WarningMKXFond du Lac33 min
Jun 24, 9:37 AM CDTSpecial Weather StatementMKXSheboygan23 min
Jun 24, 10:03 AM CDTSpecial Weather StatementMKXFond du Lac, Ozaukee, Sheboygan27 min
Jun 24, 10:59 AM CDTSpecial Weather StatementMKXColumbia46 min
Jun 24, 11:08 AM CDTSpecial Weather StatementMKXSheboygan37 min
Jun 24, 11:38 AM CDTAreal Flood AdvisoryMKXColumbia, Dodge2 hr

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.