Alert archive / Wisconsin / Special Weather Statements in 2021

Special Weather Statement, NWS Green Bay, WI

August 6, 2021Outagamie County, Winnebago County, Wisconsin

NWS Green Bay, WI issued this special weather statement at Aug 6, 2021, 7:36 AM CDT for Outagamie County, Winnebago County, Wisconsin. It was in force for 39 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: Aug 6, 2021, 7:36 AM CDT (12:36 UTC)
Expired: Aug 6, 2021, 8:15 AM CDT
In force: 39 min
Issued by: NWS Green Bay, WI
Hail: 0.50 in
Wind: 40

Counties Outagamie County, WI, Winnebago County, WI

The radar

The Green Bay radar (KGRB), 46 km from the middle of the area, began a volume at 12:38 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
Aug 6, 8:17 AM CDT	HAIL 0.25	Appleton, WI

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, 0.6 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-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: 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.

404 
WWUS83 KGRB 061236
SPSGRB

Special Weather Statement
National Weather Service Green Bay WI
736 AM CDT Fri Aug 6 2021
 
WIZ037-038-045-048-049-061315-
Calumet WI-Waupaca WI-Outagamie WI-Winnebago WI-Waushara WI-
736 AM CDT Fri Aug 6 2021

...Strong thunderstorms will impact portions of northwestern Calumet,
Winnebago, northeastern Waushara, southern Waupaca and southern
Outagamie Counties through 815 AM CDT...

At 735 AM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 6 miles north of Fremont to Lake Poygan.
Movement was east at 25 mph.

HAZARD...Winds in excess of 40 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.

Strong thunderstorms will be near...
  New London around 745 AM CDT.

Other locations in the path of these storms include Oshkosh, Appleton
and Menasha.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building. 

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

&&

LAT...LON 4449 8832 4400 8827 4406 8904 4441 8910
TIME...MOT...LOC 1235Z 269DEG 21KT 4435 8886 4414 8883 

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...40 MPH

$$

Kurimski

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 6, 7:07 AM CDT	Special Weather Statement	GRB	Waushara	53 min
Aug 6, 8:10 AM CDT	Special Weather Statement	GRB	Calumet	50 min
Aug 6, 3:53 PM CDT	Special Weather Statement	GRB	Calumet	37 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.