Alert archive / Wisconsin / Special Weather Statements in 2018

Special Weather Statement, NWS Green Bay, WI

July 29, 2018Waushara County, Wisconsin

NWS Green Bay, WI issued this special weather statement at Jul 29, 2018, 12:13 PM CDT for Waushara County, Wisconsin. It was in force for 47 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 29, 2018, 12:13 PM CDT (17:13 UTC)
Expired: Jul 29, 2018, 1:00 PM CDT
In force: 47 min
Issued by: NWS Green Bay, WI

County Waushara County, WI

The radar

The Green Bay radar (KGRB), 101 km from the middle of the area, began a volume at 17:13 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, 5.2 hours before the alert went out and 101 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: 158 J/kg
Mixed-layer CIN: -83 J/kg
Mixed-layer LCL: 1372 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: 1 m²/s²
0-3 km storm-relative helicity: -7 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 29, 3:52 AM CDT, 8 hours 21 minutes earlier.

Area forecast discussion, Jul 29, 3:52 AM CDT, 8 hours 21 minutes before

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Hazardous weather outlook, Jul 29, 3:58 AM CDT, 8 hours 15 minutes before

Hazardous Weather Outlook
National Weather Service Green Bay WI
358 AM CDT Sun Jul 29 2018

WIZ005-010>013-018>022-030-031-035>040-045-048>050-073-074-301100-
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-
358 AM CDT Sun Jul 29 2018

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

.DAY ONE...Today and Tonight

Isolated thunderstorms are expected to develop during the
afternoon and persist into early evening before diminishing. The
storms are not expected to be severe.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

There is a slight chance of thunderstorms Monday afternoon, and a
greater chance Wednesday and Wednesday night. The storms are not
expected to be severe.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today or tonight.

LMZ521-522-541>543-301100-
The Bay of Green Bay south of a line from Cedar River MI to Rock
Island Passage-Lake Michigan from Washington Island to Sheboygan-
358 AM CDT Sun Jul 29 2018

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

.DAY ONE...Today and Tonight

Isolated thunderstorms developing over the land could move over
the lake and bay this afternoon or early this evening. Any storms
that move over the water will pose a lightning hazard to boaters.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

Thunderstorms are possible Wednesday through Wednesday night. Any
storms that develop would pose a hazard to mariners.

Skowronski/MG

In the hours before

Special weather statement, Jul 29, 12:13 PM CDT, 0 minutes before

Special Weather Statement
National Weather Service Green Bay WI
1213 PM CDT SUN JUL 29 2018

WIZ045-291800-
Waushara WI-
1213 PM CDT SUN JUL 29 2018

...HEAVY RAINS POSSIBLE OVER WAUSHARA COUNTY...

At 1208 PM CDT, Doppler radar was tracking showers and thunderstorms
between Wild Rose, Mount Morris and Pine River. The storms were
nearly stationary.

Locations impacted include...
Wautoma, Silver Lake, Mount Morris, Saxeville and Wild Rose.

Very heavy rain is possible with the thunderstorms, with as much as
an inch in less than an hour.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Torrential rainfall is occurring with this storm, and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.

&&

LAT...LON 4406 8945 4424 8937 4424 8916 4421 8909
      4404 8917
TIME...MOT...LOC 1708Z 108DEG 2KT 4415 8923

RDM

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 29, 2:08 PM CDT	Special Weather Statement	GRB	Waupaca	37 min
Jul 29, 2:12 PM CDT	Special Weather Statement	GRB	Brown	63 min
Jul 29, 2:44 PM CDT	Special Weather Statement	GRB	Kewaunee, Manitowoc	61 min
Jul 29, 5:52 PM CDT	Special Weather Statement	GRB	Shawano	53 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.