Alert archive / Wisconsin / Special Weather Statements in 2021

Special Weather Statement, NWS Green Bay, WI

August 7, 2021Calumet County, Winnebago County, Wisconsin

NWS Green Bay, WI issued this special weather statement at Aug 7, 2021, 9:51 PM CDT for Calumet County, Winnebago County, Wisconsin. It was in force for 24 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, 9:51 PM CDT (02:51 UTC)
Expired: Aug 7, 2021, 10:15 PM CDT
In force: 24 min
Issued by: NWS Green Bay, WI
Hail: 0.25 in
Wind: 40

Counties Calumet County, WI, Winnebago County, WI

The radar

The Green Bay radar (KGRB), 68 km from the middle of the area, began a volume at 02:52 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 00:00Z, 2.9 hours before the alert went out and 66 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: 22 J/kg
Mixed-layer CIN: -122 J/kg
Mixed-layer LCL: 1055 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 106 m²/s²
0-3 km storm-relative helicity: 275 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

426 
WWUS83 KGRB 080251
SPSGRB

Special Weather Statement
National Weather Service Green Bay WI
951 PM CDT Sat Aug 7 2021
 
WIZ048-049-080315-
Calumet WI-Winnebago WI-
951 PM CDT Sat Aug 7 2021

...Strong thunderstorms will impact portions of southwestern Calumet
and Winnebago Counties through 1015 PM CDT...

At 950 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Oshkosh to 9 miles southwest of Central
Lake Winnebago to 6 miles north of Rosendale. Movement was east at 30
mph.

HAZARD...Winds in excess of 40 mph and pea size 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...
  Central Lake Winnebago around 1010 PM CDT.

Other locations impacted by these storms include Pickett, Butte Des
Morts, Lake Butte Des Morts, Jericho, Rivermoor, Brothertown,
Winneconne, Harbor Springs, Fisk and Lake Butte Des Mor.

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.

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 4390 8889 4407 8888 4413 8865 4410 8816
      4394 8823 4394 8840 4389 8840
TIME...MOT...LOC 0250Z 279DEG 28KT 4399 8853 4394 8858 4390 8862 

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH

$$

Bersch

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 7, 7:21 PM CDT	Special Weather Statement	GRB	Portage, Wood	39 min
Aug 7, 7:46 PM CDT	Areal Flood Advisory	GRB	Waushara	3 hr
Aug 7, 8:00 PM CDT	Special Weather Statement	GRB	Portage, Waupaca, Waushara	60 min
Aug 7, 8:13 PM CDT	Areal Flood Advisory	GRB	Portage, Waupaca, Waushara, Wood	3 hr
Aug 7, 8:59 PM CDT	Special Weather Statement	GRB	Waushara, Winnebago	61 min
Aug 7, 10:15 PM CDT	Special Weather Statement	GRB	Calumet	30 min
Aug 7, 10:43 PM CDT	Special Weather Statement	GRB	Calumet	47 min
Aug 8, 1:33 AM CDT	Special Weather Statement	GRB	Shawano	42 min
Aug 8, 2:36 AM CDT	Areal Flood Advisory	GRB	Brown, Door, Kewaunee, Oconto, Outagamie, Shawano	114 min
Aug 8, 3:43 AM CDT	Areal Flood Advisory	GRB	Brown, Calumet, Manitowoc, Outagamie, Waupaca, Winnebago	2 hr
Aug 8, 4:35 AM CDT	Areal Flood Advisory	GRB	Brown, Door, Kewaunee, Manitowoc, Oconto, Outagamie and 1 more	3 hr
Aug 8, 5:03 AM CDT	Areal Flood Advisory	GRB	Calumet, Manitowoc, Portage, Waupaca, Waushara, Winnebago and 1 more	117 min
Aug 8, 5:23 AM CDT	Special Weather Statement	GRB	Wood	52 min
Aug 8, 5:37 AM CDT	Special Weather Statement	GRB	Marathon, Portage, Wood	38 min
Aug 8, 5:56 AM CDT	Areal Flood Advisory	GRB	Brown, Calumet, Kewaunee, Manitowoc, Outagamie, Waupaca and 1 more	2 hr
Aug 8, 10:38 AM CDT	Small Craft Advisory	GRB		11 hr
Aug 8, 3:13 PM CDT	Special Weather Statement	GRB	Waushara, Wood	77 min
Aug 8, 3:54 PM CDT	Severe Thunderstorm Warning	GRB	Waushara	51 min
Aug 8, 4:16 PM CDT	Severe Thunderstorm Warning	GRB	Waushara, Winnebago	29 min
Aug 8, 4:30 PM CDT	Special Weather Statement	GRB	Calumet, Winnebago	30 min
Aug 8, 4:30 PM CDT	Severe Thunderstorm Warning	GRB	Outagamie, Portage, Shawano, Waupaca, Waushara, Winnebago	60 min
Aug 8, 4:46 PM CDT	Severe Thunderstorm Warning	GRB	Waushara, Winnebago	29 min
Aug 8, 5:10 PM CDT	Special Weather Statement	GRB	Brown	35 min
Aug 8, 5:27 PM CDT	Special Weather Statement	GRB	Brown, Outagamie	48 min
Aug 8, 5:41 PM CDT	Special Weather Statement	GRB	Calumet, Manitowoc	49 min
Aug 8, 6:19 PM CDT	Special Marine Warning	GRB		56 min
Aug 8, 6:22 PM CDT	Special Marine Warning	GRB		66 min
Aug 8, 6:31 PM CDT	Areal Flood Advisory	GRB	Brown, Kewaunee	62 min
Aug 8, 6:31 PM CDT	Special Weather Statement	GRB	Kewaunee, Manitowoc	44 min
Aug 8, 6:46 PM CDT	Severe Thunderstorm Warning	GRB	Brown, Door, Kewaunee	29 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.