Alert archive / Wisconsin / Special Weather Statements in 2018

Special Weather Statement, NWS Green Bay, WI

July 1, 2018Shawano County, Wisconsin

NWS Green Bay, WI issued this special weather statement at Jul 1, 2018, 12:01 PM CDT for Shawano County, Wisconsin. It was in force for 44 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 1, 2018, 12:01 PM CDT (17:01 UTC)
Expired: Jul 1, 2018, 12:45 PM CDT
In force: 44 min
Issued by: NWS Green Bay, WI

County Shawano County, WI

The radar

The Green Bay radar (KGRB), 86 km from the middle of the area, began a volume at 17:04 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, 5.0 hours before the alert went out and 88 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: 10 J/kg
Mixed-layer CIN: -259 J/kg
Mixed-layer LCL: 1272 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 86 m²/s²
0-3 km storm-relative helicity: 152 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Jul 1, 6:11 AM CDT, 5 hours 50 minutes earlier.

Area forecast discussion, Jul 1, 6:11 AM CDT, 5 hours 50 minutes before

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Hazardous weather outlook, Jul 1, 10:18 AM CDT, 1 hour 43 minutes before

Hazardous Weather Outlook
National Weather Service Green Bay WI
1018 AM CDT Sun Jul 1 2018

WIZ005-010>013-018>022-030-031-035>040-045-048>050-073-074-021100-
Vilas-Oneida-Forest-Florence-Northern Marinette County-Lincoln-
Langlade-Menominee-Northern Oconto County-Door-Marathon-Shawano-
Wood-Portage-Waupaca-Outagamie-Brown-Kewaunee-Waushara-Winnebago-
Calumet-Manitowoc-Southern Marinette County-
Southern Oconto County-
1018 AM CDT Sun Jul 1 2018

...SEVERE THUNDERSTORMS WITH TORNADOES, DAMAGING WINDS, AND LARGE
HAIL POSSIBLE THIS AFTERNOON...

This Hazardous Weather Outlook is for north-central and northeast
Wisconsin.

.DAY ONE...This Afternoon and Tonight

Thunderstorms are expected to develop in western Wisconsin mid-day,
and move northeast across the area this afternoon. Some of the
storms are likely to be severe and produce damaging wind gusts and
large hail. Tornadoes are also possible with the storms.

The greatest potential for severe storms will be east of a line
from Wisconsin Rapids to Wausau to Iron Mountain, Michigan, and
will occur between noon and 800 pm.

Gusty south winds will produce large waves on Lake Michigan,
which will lead to an increased risk of strong currents and
hazardous swimming conditions at Lake Michigan beaches.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

There is a chance for thunderstorms late Monday afternoon and
Monday night across far north-central Wisconsin. Severe weather is
not expected with these storms.

The next chance for thunderstorms arrives Wednesday into
Thursday. The potential for severe weather with these storms is
uncertain this far in advance.

Hot and humid weather is forecast to return Wednesday and
Thursday with heat indices approaching 100 degrees.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is likely to be needed this afternoon.

LMZ521-522-541>543-021100-
The Bay of Green Bay south of a line from Cedar River MI to Rock
Island Passage-Lake Michigan from Washington Island to Sheboygan-
1018 AM CDT Sun Jul 1 2018

This Hazardous Weather Outlook is for portions of northwest Lake
Michigan and the waters of Green Bay.

.DAY ONE...This Afternoon and Tonight

Thunderstorms may pose a significant hazard to boaters on the bay
and lake this afternoon and early this evening. Gusty south winds
will also create hazardous conditions for small craft. Patchy
dense fog is also possible, mainly on the lake.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

There is a chance for thunderstorms on Wednesday into Thursday.

Skowronski

In the hours before

Special weather statement, Jul 1, 11:49 AM CDT, 12 minutes before

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Special weather statement, Jul 1, 12:01 PM 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 30, 7:16 PM CDT	Special Weather Statement	GRB	Outagamie, Waupaca, Winnebago	59 min
Jun 30, 8:45 PM CDT	Special Weather Statement	GRB	Florence	15 min
Jun 30, 9:09 PM CDT	Special Weather Statement	GRB	Vilas	51 min
Jul 1, 3:29 AM CDT	Small Craft Advisory	GRB		22 hr
Jul 1, 3:43 AM CDT	Beach Hazards Statement	GRB	Door, Kewaunee, Manitowoc	21 hr
Jul 1, 12:10 PM CDT	Severe Thunderstorm Warning	GRB	Menominee, Portage, Shawano, Waupaca	50 min
Jul 1, 12:18 PM CDT	Tornado Warning	GRB	Shawano, Waupaca	42 min
Jul 1, 12:23 PM CDT	Severe Thunderstorm Warning	GRB	Menominee, Oconto	82 min
Jul 1, 12:43 PM CDT	Tornado Warning	GRB	Marinette, Oconto	47 min
Jul 1, 1:20 PM CDT	Severe Thunderstorm Warning	GRB	Marinette	55 min
Jul 1, 1:26 PM CDT	Special Weather Statement	GRB	Brown	49 min
Jul 1, 1:28 PM CDT	Special Marine Warning	GRB		92 min
Jul 1, 1:37 PM CDT	Severe Thunderstorm Warning	GRB	Brown, Oconto, Outagamie	53 min
Jul 1, 1:38 PM CDT	Special Weather Statement	GRB	Waushara	52 min
Jul 1, 1:54 PM CDT	Special Weather Statement	GRB	Winnebago	51 min
Jul 1, 2:06 PM CDT	Severe Thunderstorm Warning	GRB	Outagamie, Waupaca, Waushara, Winnebago	39 min
Jul 1, 2:10 PM CDT	Special Marine Warning	GRB		65 min
Jul 1, 2:27 PM CDT	Special Weather Statement	GRB	Door	48 min
Jul 1, 2:40 PM CDT	Severe Thunderstorm Warning	GRB	Brown, Oconto, Outagamie, Shawano	50 min
Jul 1, 2:53 PM CDT	Special Marine Warning	GRB		106 min
Jul 1, 3:13 PM CDT	Severe Thunderstorm Warning	GRB	Brown, Marinette, Oconto	47 min
Jul 1, 3:24 PM CDT	Severe Thunderstorm Warning	GRB	Door	66 min
Jul 1, 3:27 PM CDT	Special Marine Warning	GRB		93 min
Jul 1, 5:00 PM CDT	Special Marine Warning	GRB		30 min

Nearby

Special Weather Statements in Wisconsin, 2018 Every special weather statement in 2018

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.