Alert archive / Wisconsin / Special Weather Statements in 2021

Special Weather Statement, NWS Milwaukee, WI

August 7, 2021Columbia County, Green Lake County, Wisconsin

NWS Milwaukee, WI issued this special weather statement at Aug 7, 2021, 11:01 AM CDT for Columbia County, Green Lake County, Wisconsin. It was in force for 59 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 7, 2021, 11:01 AM CDT (16:01 UTC)
Expired: Aug 7, 2021, 12:00 PM CDT
In force: 59 min
Issued by: NWS Milwaukee, WI
Hail: 0.00 in
Wind: 55

Counties Columbia County, WI, Green Lake County, WI

The radar

The Milwaukee radar (KMKX), 84 km from the middle of the area, began a volume at 16:01 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, 4.0 hours before the alert went out and 126 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: 20 J/kg
Mixed-layer CIN: -32 J/kg
Mixed-layer LCL: 656 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 72 m²/s²
0-3 km storm-relative helicity: 103 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

672 
WWUS83 KMKX 071601
SPSMKX

Special Weather Statement
National Weather Service Milwaukee/Sullivan WI
1101 AM CDT Sat Aug 7 2021
 
WIZ046-047-051-057-058-071700-
Dodge WI-Columbia WI-Green Lake WI-Marquette WI-Fond Du Lac WI-
1101 AM CDT Sat Aug 7 2021

...Strong thunderstorms will impact portions of southern Green Lake,
west central Fond du Lac, eastern Columbia, southeastern Marquette
and western Dodge Counties through NOON CDT...

At 1101 AM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Montello to near Pardeeville to near Rio.
Movement was east at 30 mph.

HAZARD...Wind gusts of 50 to 55 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around 
         unsecured objects.

Locations impacted include...
Beaver Dam, Columbus, Poynette, Pardeeville, Randolph, Fall River,
Montello, Markesan, Rio, Brandon, Cambria, Fox Lake, Alto,
Manchester, Wyocena, Reeseville, Mecan, Otsego, Fairwater and
Friesland.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building. 

Persons in campgrounds should consider seeking sturdy shelter until
these storms pass.

&&

LAT...LON 4378 8878 4325 8879 4337 8943 4363 8939
      4382 8944
TIME...MOT...LOC 1601Z 280DEG 25KT 4374 8934 4362 8931 4346 8933 

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...55 MPH

$$

HANSEN

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 6, 7:34 PM CDT	Areal Flood Advisory	MKX	Milwaukee, Waukesha	119 min
Aug 6, 7:38 PM CDT	Severe Thunderstorm Warning	MKX	Jefferson	37 min
Aug 6, 7:55 PM CDT	Special Marine Warning	MKX		50 min
Aug 6, 7:57 PM CDT	Special Weather Statement	MKX	Kenosha, Racine, Walworth	63 min
Aug 6, 8:00 PM CDT	Areal Flood Advisory	MKX	Jefferson, Rock, Walworth	2 hr
Aug 6, 8:14 PM CDT	Severe Thunderstorm Warning	MKX	Rock, Walworth	31 min
Aug 6, 8:51 PM CDT	Special Weather Statement	MKX	Rock, Walworth	54 min
Aug 6, 9:45 PM CDT	Severe Thunderstorm Warning	MKX	Dane	30 min
Aug 6, 10:15 PM CDT	Special Weather Statement	MKX	Dane	30 min
Aug 7, 10:06 AM CDT	Special Weather Statement	MKX	Columbia, Marquette	54 min
Aug 7, 11:47 AM CDT	Special Weather Statement	MKX	Dodge, Jefferson	58 min
Aug 7, 12:32 PM CDT	Severe Thunderstorm Warning	MKX	Jefferson	43 min
Aug 7, 12:54 PM CDT	Severe Thunderstorm Warning	MKX	Jefferson, Waukesha	45 min
Aug 7, 1:48 PM CDT	Severe Thunderstorm Warning	MKX	Sauk	42 min
Aug 7, 3:53 PM CDT	Severe Thunderstorm Warning Considerable damage threat	MKX	Sauk	52 min
Aug 7, 4:33 PM CDT	Severe Thunderstorm Warning Considerable damage threat	MKX	Columbia, Dane, Iowa, Sauk	57 min
Aug 7, 4:38 PM CDT	Tornado Warning Tornado observed	MKX	Iowa	67 min
Aug 7, 5:17 PM CDT	Severe Thunderstorm Warning	MKX	Columbia, Green Lake, Marquette, Sauk	58 min
Aug 7, 5:26 PM CDT	Tornado Warning	MKX	Columbia	39 min
Aug 7, 5:31 PM CDT	Severe Thunderstorm Warning	MKX	Columbia, Dane	59 min
Aug 7, 5:33 PM CDT	Tornado Warning	MKX	Iowa	57 min
Aug 7, 6:03 PM CDT	Special Weather Statement	MKX	Dodge, Fond du Lac, Green Lake	42 min
Aug 7, 6:09 PM CDT	Severe Thunderstorm Warning	MKX	Dane	66 min
Aug 7, 6:25 PM CDT	Severe Thunderstorm Warning	MKX	Dane	50 min
Aug 7, 6:40 PM CDT	Special Weather Statement	MKX	Jefferson	50 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.