Alert archive / Wisconsin / Special Weather Statements in 2018

Special Weather Statement, NWS Green Bay, WI

June 16, 2018Portage County, Wisconsin

NWS Green Bay, WI issued this special weather statement at Jun 16, 2018, 3:13 PM CDT for Portage 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
Jun 16, 2018, 3:13 PM CDT (20:13 UTC)
Expired
Jun 16, 2018, 4:00 PM CDT
In force
47 min
Issued by
NWS Green Bay, WI

County Portage County, WI

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 8.2 hours before the alert went out and 91 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, Green Bay/Straub, WI at 12:00Z on 2018-06-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 823 joules per kilogram.LCLLFCEL10008507005003002001001 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, Green Bay/Straub, WI at 12:00Z on 2018-06-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 138 square meters per square second.1939Sfc1 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
823 J/kg
Mixed-layer CIN
-222 J/kg
Mixed-layer LCL
930 m above ground
0-6 km bulk shear
8 kt
0-1 km storm-relative helicity
138 m²/s²
0-3 km storm-relative helicity
160 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 Jun 16, 2:35 PM CDT, 38 minutes earlier.

Area forecast discussion, Jun 16, 2:35 PM CDT, 38 minutes before
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Hazardous weather outlook, Jun 16, 3:08 PM CDT, 5 minutes before
Hazardous Weather Outlook
National Weather Service Green Bay WI
308 PM CDT Sat Jun 16 2018

WIZ005-010>013-018>022-030-031-035>040-045-048>050-073-074-172015-
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-
308 PM CDT Sat Jun 16 2018

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

.DAY ONE...Tonight

Thunderstorms are possible tonight, especially over north central
Wisconsin. A few storms could produce heavy rain, gusty winds and
localized flooding. A Flash Flood Watch is in effect for Vilas
and Oneida counties.

.DAYS TWO THROUGH SEVEN...Sunday through Saturday

There is a slight chance of severe thunderstorms over most of the
area Sunday afternoon and Sunday night as a cold front moves
through the state. Large hail and damaging winds are possible.
The storms could also produce heavy rainfall and pose a risk of
flooding, especially across north-central Wisconsin. A Flash
Flood Watch remains in effect for Vilas and Oneida Counties
through Monday afternoon.

Hot and humid conditions are expected Sunday, with heat indices in
the middle to upper 90s across central and east central Wisconsin.
Spend some time in the shade or air conditioned buildings during
the hottest part of the day.

There is a chance of thunderstorms late next week. It is too
early to determine if any of these storms would become severe.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed Sunday and Sunday night.

LMZ521-522-541>543-172015-
The Bay of Green Bay south of a line from Cedar River MI to Rock
Island Passage-Lake Michigan from Washington Island to Sheboygan-
308 PM CDT Sat Jun 16 2018

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

.DAY ONE...Tonight

Scattered thunderstorms will pose a hazard to boaters on the lake
and bay at times tonight.

.DAYS TWO THROUGH SEVEN...Sunday through Saturday

There is a chance of thunderstorms Sunday through Monday night.
Some storms could produce strong winds and hail Sunday afternoon
or Sunday night. Dense fog is also possible at times through
Monday, especially on the lake.

RDM/Eckberg

In the hours before

Special weather statement, Jun 16, 9:27 AM CDT, 5 hours 46 minutes before
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Special weather statement, Jun 16, 10:04 AM CDT, 5 hours 9 minutes before
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Special weather statement, Jun 16, 10:40 AM CDT, 4 hours 33 minutes before
Special Weather Statement
National Weather Service Green Bay WI
1040 AM CDT SAT JUN 16 2018

WIZ013-073-161630-
Southern Marinette County WI-Northern Marinette County WI-
1040 AM CDT SAT JUN 16 2018

...SIGNIFICANT WEATHER ADVISORY FOR MARINETTE COUNTY UNTIL 1130 AM
CDT...

At 1040 AM CDT, Doppler radar was tracking a cluster of strong
thunderstorms with torrential rainfall north of Athelstane.
Another thunderstorm was noted near Marinette. The thunderstorms
were moving east at 20 mph.

Winds to around 40 mph, small hail and torrential rain can be
expected with the thunderstorms. Rainfall rates of 1 to 2 inches
per hour can be expected with the stronger storms, resulting in
localized flooding.

Locations impacted include...
Marinette, Goodman, Wausaukee, Porterfield, Dunbar and Middle Inlet.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

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

&&

LAT...LON 4494 8768 4549 8842 4572 8839 4572 8784
      4568 8778 4565 8783 4559 8778 4556 8783
      4550 8779 4535 8789 4537 8787 4534 8785
      4535 8775 4539 8769 4535 8765 4520 8774
      4511 8767 4509 8760 4514 8760 4513 8757
TIME...MOT...LOC 1536Z 274DEG 18KT 4552 8770

Eckberg
Special weather statement, Jun 16, 11:23 AM CDT, 3 hours 50 minutes before
Special Weather Statement
National Weather Service Green Bay WI
1123 AM CDT SAT JUN 16 2018

WIZ022-161700-
Door WI-
1123 AM CDT SAT JUN 16 2018

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL DOOR COUNTY UNTIL NOON
CDT...

At 1121 AM CDT, Doppler radar was tracking clusters of strong
thunderstorms with torrential rainfall, gusty winds and hail from
20 miles north of Marinette to near Egg Harbor. The thunderstorms
were moving southeast at 15 mph.

Winds in excess of 40 mph, small hail and torrential rainfall will be
possible with these storms.

This strong thunderstorm will be near...
  Egg Harbor around 1130 AM CDT.
  Jacksonport around 1155 AM CDT.

Other locations impacted by this storm include Peninsula Center, Fish
Creek, Peninsula State Park, Sister Bay, Valmy, Institute, Whitefish
Bay, Baileys Harbor, Whitefish Dunes State Park and Carlsville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

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

&&

LAT...LON 4501 8710 4486 8715 4481 8721 4496 8744
      4507 8736 4512 8737 4515 8741 4525 8734
      4522 8728 4522 8721 4523 8720 4515 8696
      4511 8695
TIME...MOT...LOC 1621Z 297DEG 13KT 4509 8730

Eckberg
Special weather statement, Jun 16, 12:42 PM CDT, 2 hours 31 minutes before
Special Weather Statement
National Weather Service Green Bay WI
1242 PM CDT SAT JUN 16 2018

WIZ022-073-161830-
Southern Marinette County WI-Door WI-
1242 PM CDT SAT JUN 16 2018

...TORRENTIAL RAINFALL OCCURING ACROSS SOUTHERN SECTIONS OF
MARINETTE AND DOOR COUNTIES EARLY THIS AFTERNOON...

At 1242 PM CDT, Doppler radar was tracking a cluster of thunderstorms
with torrential rainfall from Marinette and Peshtigo southern into
southern Door County near Little Sturgeon, Maplewood and Clay Banks.
Little movement was noted with the storms.

The strongest storms will be capable of producing small hail,
gusty winds to around 30 mph, and torrential rainfall. Rainfall
rates of 1 to 2 inches per hoiur will create localized flooding and
ponding of water on roads.

The cluster of storms will move over the following locations...
Vignes, Maplewood, Brussels, Institute, Forestville, Peshtigo,
Potawatomi State Park, Carlsville, Kolberg and Carnot.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

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

&&

LAT...LON 4476 8726 4467 8738 4468 8762 4480 8771
      4489 8760 4494 8764 4494 8767 4490 8777
      4485 8778 4488 8783 4515 8770 4511 8766
      4509 8759 4514 8760 4510 8753 4495 8764
      4491 8761 4493 8746 4502 8740 4483 8718
TIME...MOT...LOC 1738Z 250DEG 5KT 4473 8738

Eckberg
Special weather statement, Jun 16, 3:13 PM CDT, 0 minutes before
Special Weather Statement
National Weather Service Green Bay WI
313 PM CDT SAT JUN 16 2018

WIZ036-037-162100-
Waupaca WI-Portage WI-
313 PM CDT SAT JUN 16 2018

...STRONG THUNDERSTORM MOVING ACROSS NORTHEAST PORTAGE INTO NORTHWEST
WAUPACA COUNTY THIS AFTERNOON...

At 312 PM CDT, Doppler radar was tracking a strong thunderstorm 8
miles north of Amherst, or 13 miles east of Stevens Point, moving
northeast at 15 mph.

Winds gusts to 40 mph, small hail and torrential rainfall can be
expected with this storm. Rainfall rates of 1 to 2 inches per
hour may result in localized flooding.

This storm will remain over far northeast Portage and northwest Waupaca
counties, including the following locations...Rosholt, Ellis, Northland,
Schmidt Corner, Polonia, Norske and Peru.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

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

&&

LAT...LON 4447 8917 4457 8946 4468 8935 4468 8905
TIME...MOT...LOC 2010Z 225DEG 11KT 4457 8931

Eckberg

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 15, 7:39 PM CDTSpecial Weather StatementGRBPortage, Wood51 min
Jun 15, 7:57 PM CDTSpecial Weather StatementGRBWaushara63 min
Jun 15, 8:28 PM CDTSpecial Weather StatementGRBBrown, Calumet, Door, Kewaunee, Marathon, Oconto and 7 more92 min
Jun 16, 3:30 AM CDTFlash Flood WatchGRBFlorence, Forest, Langlade, Lincoln, Marathon, Marinette and 8 more53 hr
Jun 16, 6:40 AM CDTSpecial Marine WarningGRB65 min
Jun 16, 7:25 AM CDTSpecial Marine WarningGRB75 min
Jun 16, 7:57 AM CDTSpecial Marine WarningGRB33 min
Jun 16, 8:46 AM CDTSpecial Weather StatementGRBDoor44 min
Jun 16, 9:02 AM CDTSpecial Marine WarningGRB88 min
Jun 16, 9:09 AM CDTSpecial Weather StatementGRBMarinette36 min
Jun 16, 9:27 AM CDTSpecial Weather StatementGRBOneida, Vilas48 min
Jun 16, 10:04 AM CDTSpecial Weather StatementGRBDoor41 min
Jun 16, 10:30 AM CDTSpecial Marine WarningGRB60 min
Jun 16, 10:40 AM CDTSpecial Weather StatementGRBMarinette50 min
Jun 16, 10:49 AM CDTSpecial Marine WarningGRB67 min
Jun 16, 11:23 AM CDTSpecial Weather StatementGRBDoor37 min
Jun 16, 11:30 AM CDTSpecial Marine WarningGRB34 min
Jun 16, 12:42 PM CDTSpecial Weather StatementGRBKewaunee48 min
Jun 16, 3:49 PM CDTSpecial Weather StatementGRBWaupaca41 min
Jun 16, 4:24 PM CDTSevere Thunderstorm WarningGRBOutagamie, Waupaca, Waushara, Winnebago66 min
Jun 16, 4:40 PM CDTSevere Thunderstorm WarningGRBWaushara40 min
Jun 16, 4:48 PM CDTSpecial Weather StatementGRBForest57 min
Jun 16, 5:33 PM CDTSpecial Weather StatementGRBWaupaca42 min
Jun 16, 6:02 PM CDTSpecial Weather StatementGRBVilas58 min
Jun 16, 6:08 PM CDTSevere Thunderstorm WarningGRBOneida, Vilas67 min

Nearby

Special Weather Statements in Wisconsin, 2018Every 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.