Alert archive / Wisconsin / Special Weather Statements in 2021

Special Weather Statement, NWS Green Bay, WI

July 6, 2021Portage County, Wisconsin

NWS Green Bay, WI issued this special weather statement at Jul 6, 2021, 3:21 PM CDT for Portage County, Wisconsin. It was in force for 39 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: Jul 6, 2021, 3:21 PM CDT (20:21 UTC)
Expired: Jul 6, 2021, 4:00 PM CDT
In force: 39 min
Issued by: NWS Green Bay, WI

County Portage County, WI

The radar

The Green Bay radar (KGRB), 104 km from the middle of the area, began a volume at 20:22 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, 8.4 hours before the alert went out and 104 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: 34 J/kg
Mixed-layer CIN: -188 J/kg
Mixed-layer LCL: 1667 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 25 m²/s²
0-3 km storm-relative helicity: 49 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

319 
WWUS83 KGRB 062021
SPSGRB

Special Weather Statement
National Weather Service Green Bay WI
321 PM CDT Tue Jul 6 2021
 
WIZ036-062100-
Portage WI-
321 PM CDT Tue Jul 6 2021

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN PORTAGE COUNTY UNTIL
400 PM CDT...

At 321 PM CDT, Doppler radar was tracking a strong thunderstorm 7
miles north of Plainfield, or 15 miles south of Stevens Point, moving
northeast at 20 mph.

Nickel size hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Amherst, Almond, Blaine, Bancroft, Keene and Emmons Creek Barrens. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building. 

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

A Severe Thunderstorm Watch remains in effect until 1000 PM CDT for
central and northeastern Wisconsin.

LAT...LON 4425 8953 4433 8957 4446 8929 4439 8922
      4429 8923 4424 8939
TIME...MOT...LOC 2021Z 239DEG 16KT 4431 8947 

$$

Kotenberg

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 5, 7:11 PM CDT	Special Weather Statement	GRB	Marathon	49 min
Jul 5, 8:03 PM CDT	Special Weather Statement	GRB	Outagamie	27 min
Jul 5, 8:23 PM CDT	Special Weather Statement	GRB	Calumet, Outagamie, Winnebago	52 min
Jul 6, 4:13 AM CDT	Beach Hazards Statement	GRB	Kewaunee, Manitowoc	60 hr
Jul 6, 4:28 AM CDT	Small Craft Advisory	GRB		60 hr
Jul 6, 1:34 PM CDT	Special Marine Warning	GRB		41 min
Jul 6, 1:36 PM CDT	Special Weather Statement	GRB	Brown, Calumet, Kewaunee, Manitowoc, Outagamie, Shawano and 1 more	54 min
Jul 6, 2:29 PM CDT	Special Weather Statement	GRB	Brown, Calumet, Kewaunee, Manitowoc, Oconto, Outagamie and 2 more	46 min
Jul 6, 3:14 PM CDT	Special Weather Statement	GRB	Outagamie	46 min
Jul 6, 3:16 PM CDT	Special Weather Statement	GRB	Brown, Manitowoc	44 min
Jul 6, 3:18 PM CDT	Special Weather Statement	GRB	Kewaunee	42 min
Jul 6, 3:27 PM CDT	Special Weather Statement	GRB	Wood	78 min
Jul 6, 3:35 PM CDT	Special Weather Statement	GRB	Langlade	40 min
Jul 6, 3:38 PM CDT	Severe Thunderstorm Warning	GRB	Marathon, Wood	52 min
Jul 6, 3:45 PM CDT	Special Weather Statement	GRB	Calumet	45 min
Jul 6, 3:52 PM CDT	Special Weather Statement	GRB	Outagamie	53 min
Jul 6, 4:03 PM CDT	Special Weather Statement	GRB	Menominee	42 min
Jul 6, 4:28 PM CDT	Severe Thunderstorm Warning	GRB	Marathon, Portage, Wood	62 min
Jul 6, 4:29 PM CDT	Special Weather Statement	GRB	Calumet	46 min
Jul 6, 4:44 PM CDT	Special Weather Statement	GRB	Menominee	46 min
Jul 6, 4:55 PM CDT	Special Weather Statement	GRB	Oconto	50 min
Jul 6, 4:59 PM CDT	Special Weather Statement	GRB	Calumet	46 min
Jul 6, 5:11 PM CDT	Areal Flood Advisory	GRB	Marathon, Portage, Shawano, Waupaca, Wood	3 hr
Jul 6, 5:27 PM CDT	Severe Thunderstorm Warning	GRB	Marathon, Portage, Shawano, Waupaca, Waushara, Wood	48 min
Jul 6, 5:56 PM CDT	Special Weather Statement	GRB	Portage	49 min
Jul 6, 6:14 PM CDT	Special Weather Statement	GRB	Winnebago	46 min
Jul 6, 6:21 PM CDT	Areal Flood Advisory	GRB	Calumet, Outagamie, Winnebago	3 hr
Jul 6, 6:25 PM CDT	Special Weather Statement	GRB	Marathon	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.