Alert archive / Wisconsin / Special Weather Statements in 2020

Special Weather Statement, NWS Green Bay, WI

June 20, 2020Portage County, Wisconsin

NWS Green Bay, WI issued this special weather statement at Jun 20, 2020, 10:52 AM CDT for Portage County, Wisconsin. It was in force for 38 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: Jun 20, 2020, 10:52 AM CDT (15:52 UTC)
Expired: Jun 20, 2020, 11:30 AM CDT
In force: 38 min
Issued by: NWS Green Bay, WI

County Portage County, WI

The radar

The Green Bay radar (KGRB), 102 km from the middle of the area, began a volume at 15:54 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, 3.9 hours before the alert went out and 103 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: 103 J/kg
Mixed-layer CIN: -56 J/kg
Mixed-layer LCL: 1063 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 140 m²/s²
0-3 km storm-relative helicity: 144 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Green Bay, WI wrote its last area forecast discussion before this special weather statement went out at Jun 20, 6:15 AM CDT, 4 hours 37 minutes earlier.

Area forecast discussion, Jun 20, 6:15 AM CDT, 4 hours 37 minutes before

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Hazardous weather outlook, Jun 20, 3:00 AM CDT, 7 hours 52 minutes before

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In the hours before

Local storm report, Jun 20, 8:13 AM CDT, 2 hours 39 minutes before

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Special weather statement, Jun 20, 8:41 AM CDT, 2 hours 11 minutes before

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Special weather statement, Jun 20, 9:25 AM CDT, 1 hour 27 minutes before

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Local storm report, Jun 20, 10:46 AM CDT, 6 minutes before

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Special weather statement, Jun 20, 10:52 AM CDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 20, 8:41 AM CDT	Special Weather Statement	GRB	Portage	49 min
Jun 20, 9:21 AM CDT	Areal Flood Advisory	GRB	Langlade, Marathon, Portage, Shawano, Wood	4 hr
Jun 20, 9:25 AM CDT	Special Weather Statement	GRB	Portage	50 min
Jun 20, 10:41 AM CDT	Areal Flood Advisory	GRB	Florence, Forest, Langlade, Lincoln, Oneida, Shawano	5 hr
Jun 20, 2:12 PM CDT	Special Weather Statement	GRB	Kewaunee, Manitowoc	33 min
Jun 20, 3:29 PM CDT	Special Weather Statement	GRB	Outagamie, Waupaca	46 min
Jun 20, 4:15 PM CDT	Special Weather Statement	GRB	Outagamie, Shawano, Waupaca	45 min
Jun 20, 4:29 PM CDT	Special Weather Statement	GRB	Winnebago	46 min
Jun 20, 4:44 PM CDT	Severe Thunderstorm Warning	GRB	Winnebago	35 min
Jun 20, 5:07 PM CDT	Tornado Warning	GRB	Winnebago	9 min
Jun 20, 5:18 PM CDT	Special Weather Statement	GRB	Outagamie	42 min
Jun 20, 5:33 PM CDT	Special Weather Statement	GRB	Winnebago	27 min
Jun 20, 5:49 PM CDT	Severe Thunderstorm Warning	GRB	Calumet, Winnebago	26 min
Jun 20, 6:37 PM CDT	Special Weather Statement	GRB	Brown	38 min

Nearby

Special Weather Statements in Wisconsin, 2020 Every special weather statement in 2020

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.