Alert archive / Wisconsin / Special Weather Statements in 2021

Special Weather Statement, NWS Milwaukee, WI

June 11, 2021Columbia County, Dane County, Marquette County, Wisconsin

NWS Milwaukee, WI issued this special weather statement at Jun 11, 2021, 4:13 PM CDT for Columbia County, Dane County, Marquette County, Wisconsin. It was in force for 62 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jun 11, 2021, 4:13 PM CDT (21:13 UTC)
Expired: Jun 11, 2021, 5:15 PM CDT
In force: 62 min
Issued by: NWS Milwaukee, WI

Counties Columbia County, WI, Dane County, WI, Marquette County, WI

The radar

The Milwaukee radar (KMKX), 86 km from the middle of the area, began a volume at 21:13 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.

What was reported inside it

Time	Report	Where	Remark
Jun 11, 4:27 PM CDT	HAIL 0.5	2 Ne Sun Prairie, WI	DELAYED REPORT FROM FRIDAY AFTERNOON.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 9.2 hours before the alert went out and 172 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1468 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: 6 m²/s²
0-3 km storm-relative helicity: 75 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

438 
WWUS83 KMKX 112113
SPSMKX

Special Weather Statement
National Weather Service Milwaukee/Sullivan WI
413 PM CDT Fri Jun 11 2021

WIZ046-047-057-063-068-112215-
Green-Columbia-Green Lake-Marquette-Dane-

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT GREEN LAKE...NORTHERN
GREEN...COLUMBIA...DANE AND MARQUETTE COUNTIES...

At 412 PM CDT, radar indicated strong thunderstorms were located
along a line extending from 6 miles northwest of Westfield to near
Cottage Grove. Movement was southeast at 15 mph.

Winds of 30 to 40 mph and penny size hail are possible with these
storms.

Locations impacted include...
Madison, Sun Prairie, Fitchburg, Middleton, Stoughton, Waunakee,
Verona, Portage, Oregon, McFarland, Monona, Mount Horeb, Windsor,
Edgerton, Columbus, Prairie Du Sac, Marshall, Sauk City, Waterloo and
Lake Wisconsin.

If outdoors, consider seeking shelter inside a building.

Torrential rainfall is also occurring with these storms, and may
cause localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

LAT...LON 4285 8901 4285 8984 4321 8984 4327 8972
      4331 8973 4336 8967 4338 8960 4398 8960
      4398 8899
TIME...MOT...LOC 2112Z 293DEG 13KT 4396 8957 4304 8922 

$$

HANSEN

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 11, 12:25 PM CDT	Special Weather Statement	MKX	Rock	50 min
Jun 11, 1:00 PM CDT	Special Weather Statement	MKX	Rock	45 min
Jun 11, 2:36 PM CDT	Special Weather Statement	MKX	Sauk	54 min
Jun 11, 2:50 PM CDT	Special Weather Statement	MKX	Green	55 min
Jun 11, 3:06 PM CDT	Severe Thunderstorm Warning	MKX	Columbia, Dane, Sauk	24 min
Jun 11, 3:24 PM CDT	Special Weather Statement	MKX	Lafayette	51 min
Jun 11, 3:49 PM CDT	Special Weather Statement	MKX	Marquette	56 min
Jun 11, 4:33 PM CDT	Severe Thunderstorm Warning	MKX	Dane, Dodge, Jefferson	14 min
Jun 11, 4:54 PM CDT	Special Weather Statement	MKX	Waukesha	51 min
Jun 11, 5:05 PM CDT	Special Weather Statement	MKX	Dodge, Jefferson, Waukesha	40 min
Jun 11, 5:55 PM CDT	Special Weather Statement	MKX	Jefferson, Walworth, Waukesha	65 min
Jun 11, 6:46 PM CDT	Special Weather Statement	MKX	Milwaukee, Racine	29 min
Jun 11, 6:48 PM CDT	Special Marine Warning	MKX		57 min

Nearby

Special Weather Statements in Wisconsin, 2021 Every 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.