Alert archive / Wisconsin / Special Weather Statements in 2017

Special Weather Statement, NWS Green Bay, WI

June 18, 2017Calumet County, Wisconsin

NWS Green Bay, WI issued this special weather statement at Jun 18, 2017, 4:36 AM CDT for Calumet 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
Jun 18, 2017, 4:36 AM CDT (09:36 UTC)
Expired
Jun 18, 2017, 5:00 AM CDT
In force
24 min
Issued by
NWS Green Bay, WI

County Calumet County, WI

The radar

The Green Bay radar (KGRB), 41 km from the middle of the area, began a volume at 09:39 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

Detroit, MI (KDTX), launched 00:00Z, 9.6 hours before the alert went out and 402 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-pSkew-T log-p diagram, Detroit, MI at 00:00Z on 2017-06-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 787 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Detroit, MI at 00:00Z on 2017-06-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 77 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
787 J/kg
Mixed-layer CIN
-6 J/kg
Mixed-layer LCL
1630 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
77 m²/s²
0-3 km storm-relative helicity
168 m²/s²
Significant tornado parameter
0.2
Supercell composite
5.0

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 Jun 18, 4:04 AM CDT, 32 minutes earlier.

Area forecast discussion, Jun 18, 4:04 AM CDT, 32 minutes before
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      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
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Hazardous weather outlook, Jun 18, 4:27 AM CDT, 9 minutes before
Hazardous Weather Outlook
National Weather Service Green Bay WI
427 AM CDT Sun Jun 18 2017

WIZ005-010>013-018>022-030-031-035>040-045-048>050-073-074-190930-
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-
427 AM CDT Sun Jun 18 2017

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

.DAY ONE...Today and Tonight

There is a chance of thunderstorms across the region today and
early tonight. Severe weather is not expected, but some storms
will produce small hail and heavy downpours.

Due to recent heavy rains, many streams and rivers are flowing
faster than normal, and a few are above flood stage. Boaters and
fishermen should use caution due to fast flows.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

Thunderstorms are possible again Monday afternoon, and may produce
small hail.

Thunderstorms are expected at times through the rest of the period,
especially during the afternoon hours. However, it is too early
to determine their severe potential.

.SPOTTER INFORMATION STATEMENT...

Spotter activation should not be needed today or tonight.

LMZ521-522-541>543-190930-
The Bay of Green Bay south of a line from Cedar River MI to Rock
Island Passage-Lake Michigan from Washington Island to Sheboygan-
427 AM CDT Sun Jun 18 2017

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

.DAY ONE...Today and Tonight

There is a chance of thunderstorms today and early tonight. The
strongest storms may produce small hail and heavy downpours.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

Thunderstorms will be possible at times through much of the
period. These storms may pose a hazard to mariners.

Kieckbusch/MG

In the hours before

Special weather statement, Jun 18, 4:36 AM CDT, 0 minutes before
Special Weather Statement
National Weather Service Green Bay WI
436 AM CDT SUN JUN 18 2017

WIZ049-050-181000-
Calumet WI-Manitowoc WI-
436 AM CDT SUN JUN 18 2017

...SIGNIFICANT WEATHER ADVISORY FOR EAST CENTRAL CALUMET AND
NORTHWESTERN MANITOWOC COUNTIES UNTIL 500 AM CDT...

At 435 AM CDT, Doppler radar was tracking a strong thunderstorm near
Chilton, or 19 miles southeast of Appleton, moving northeast at 30
mph.

Pea size hail and winds in excess of 40 mph will be possible with
this storm. Radar was also showing weak rotation with this storm, so
a funnel cloud is possible.

This strong thunderstorm will be near...
  Brillion around 445 AM CDT.

Other locations impacted by this storm include Killsnake Wildlife
Area, Cato, Reedsville, Grimms, Taus, Menchalville, Collins, Maple
Grove, Potter and Wells.

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.

LAT...LON 4399 8813 4410 8823 4424 8797 4424 8789
      4425 8789 4412 8782
TIME...MOT...LOC 0935Z 232DEG 25KT 4408 8811

Kieckbusch

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 18, 4:49 AM CDTSpecial Marine WarningGRB41 min
Jun 18, 9:09 AM CDTSmall Craft AdvisoryGRB10 hr

Nearby

Special Weather Statements in Wisconsin, 2017Every special weather statement in 2017

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.