Special Weather Statement, NWS Green Bay, WI

Area Forecast Discussion
National Weather Service Green Bay WI
232 PM CDT Wed Aug 1 2018

Forecast discussion for routine afternoon forecast issuance

.SHORT TERM...Tonight and Thursday
Issued at 232 PM CDT Wed Aug 1 2018

Scattered showers and thunderstorms continued across the
region this afternoon. Temperatures ranged from the middle
60s across the far north to the lower to middle 80s across
east-central Wisconsin.

For the remainder of the afternoon into this evening, low
pressure along a cold front is expected to move across the
area. Additional shower and thunderstorm activity is expected,
especially across central and east-central Wisconsin. Confidence
is low that we would see severe storms due to the low 0-6 km
shear values, however clearing is taking place across western
Wisconsin for additional storms to form along the cold front.
May concern would be for damaging winds and large hail. Low
clouds will continue overnight with some patchy fog and drizzle
across the north.

Mostly cloudy skies will start the day on Thursday, with a
gradual decrease in the clouds during the afternoon. It will
be cool with highs in the middle 60s to lower 70s.

.LONG TERM...Thursday Night Through Wednesday
Issued at 232 PM CDT Wed Aug 1 2018

Persistent trof over western Great Lakes will slowly move away
from Wisconsin as upper pattern transitions to low amplitude/
zonal flow. A couple shortwave trofs are forecast to move across
the region during the first part of the long term period. It
appears the upper flow will go NW as stronger shortwave digs into
the region mid-week.

This pattern will slow the return to warmer/more humid weather
until later next week. Until then, temps will be a few degrees
either side of normal, with the coolest temps early in the long-
term period.
&&

.AVIATION...for 18Z TAF Issuance
Issued at 1217 PM CDT Wed Aug 1 2018

A cold front will bring scattered showers and thunderstorms to
the region this afternoon into early this evening. Some of
the stronger thunderstorms could produce gusty winds, hail
and heavy rainfall. Behind the cold front, poor flying conditions
are expected to develop across the region from northwest to
southeast as the night progresses. Expecting IFR CIGS or lower
along with patchy fog and drizzle. The low clouds should reach
KMTW last. Some gusty northerly winds can be expected on Thursday.
Conditions (CIGS) will gradually improve Thursday morning.
&&

.GRB WATCHES/WARNINGS/ADVISORIES...
NONE.
&&

SHORT TERM.....Eckberg
LONG TERM......JKL
AVIATION.......Eckberg

Hazardous Weather Outlook
National Weather Service Green Bay WI
215 PM CDT Wed Aug 1 2018

WIZ005-010>013-018>022-030-031-035>040-045-048>050-073-074-021915-
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-
215 PM CDT Wed Aug 1 2018

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

.DAY ONE...Rest of the Afternoon and Tonight

Scattered thunderstorms will continue for the rest of the
afternoon into this evening. A few storms could become strong or
severe with damaging winds and large hail across central into
east-central Wisconsin. Locally heavy rainfall will be possible
with the stronger storms.

.DAYS TWO THROUGH SEVEN...Thursday through Wednesday

There is a chance for thunderstorms at times from late Saturday
night into early next week. It is too early to determine their
severe weather potential.

.SPOTTER INFORMATION STATEMENT...

Spotters are requested to report wind gusts over 40 mph, hail a
half inch or greater and rainfall amounts over an inch.

LMZ521-522-541>543-021915-
The Bay of Green Bay south of a line from Cedar River MI to Rock
Island Passage-Lake Michigan from Washington Island to Sheboygan-
215 PM CDT Wed Aug 1 2018

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

.DAY ONE...Rest of the Afternoon and Tonight

Scattered thunderstorms will pose a hazard to mariners for the
rest of the afternoon into this evening. Some of the stronger
storms could produce strong gusty winds, hail and dangerous cloud
to water lightning strikes.

.DAYS TWO THROUGH SEVEN...Thursday through Wednesday

Thunderstorms are possible again at times from late Saturday
night into early next week. Any storms that develop would pose a
hazard to mariners.

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Special Weather Statement
National Weather Service Green Bay WI
429 PM CDT WED AUG 1 2018

WIZ037-038-048>050-012230-
Calumet WI-Waupaca WI-Outagamie WI-Winnebago WI-Manitowoc WI-
429 PM CDT WED AUG 1 2018

...SPECIAL WEATHER STATEMENT...

At 429 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from Fremont to near Menasha to Fond Du Lac.
Movement was east at 25 mph.

Winds in excess of 30 mph will be possible with these storms.

Locations impacted include...
Appleton, Oshkosh, Menasha, Kaukauna, Little Chute, Kimberly,
Chilton, Brillion, St. Nazianz and Fremont.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

If on or near Lake Winnebago, get out of the water and move indoors
or inside a vehicle. Remember, lightning can strike out to 10 miles
from the parent thunderstorm. If you can hear thunder, you are close
enough to be struck by lightning. Move to safe shelter now! Do not
be caught on the water in a thunderstorm.

&&

LAT...LON 4416 8862 4429 8907 4438 8850 4429 8819
      4424 8819 4424 8802 4422 8795 4389 8786
      4389 8816 4394 8816 4394 8840 4389 8840
      4389 8854
TIME...MOT...LOC 2129Z 261DEG 22KT 4428 8889 4417 8853 4379 8842

RDM

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREEN BAY WI
440 PM CDT WED AUG 1 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0436 PM     TSTM WND GST     KAUKAUNA                44.28N 88.27W
08/01/2018  M41 MPH          OUTAGAMIE          WI   TRAINED SPOTTER

            ON HWY KK NEAR THE RACE TRACK.

0436 PM     HAIL             KAUKAUNA                44.28N 88.27W
08/01/2018  M0.25 INCH       OUTAGAMIE          WI   TRAINED SPOTTER

            ON HWY KK NEAR THE RACE TRACK.

&&

KLB

Special Weather Statement
National Weather Service Green Bay WI
458 PM CDT WED AUG 1 2018

WIZ030-035-036-012300-
Marathon WI-Wood WI-Portage WI-
458 PM CDT WED AUG 1 2018

...STRONG THUNDERSTORMS MOVING INTO MARATHON AND WOOD COUNTIES
THIS AFTERNOON...

At 457 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 12 miles southwest of Council Grounds State
Park to near Loyal to 9 miles south of Price to near Wabasha.
Movement was east at 30 mph.

Winds in excess of 30 mph, small hail and locally heavy rain will be
possible with these storms.

Locations impacted include...
Wausau, Marshfield, Weston, Rib Mountain, Mosinee, Abbotsford,
Spencer, Bevent, Pittsville and Rothschild.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4503 9031 4504 9020 4512 9019 4512 8924
      4477 8931 4425 9032
TIME...MOT...LOC 2157Z 277DEG 27KT 4509 8996 4478 9044 4444 9109 4437
9200

Eckberg

Special Weather Statement
National Weather Service Green Bay WI
519 PM CDT WED AUG 1 2018

WIZ038-039-012300-
Outagamie WI-Brown WI-
519 PM CDT WED AUG 1 2018

...SPECIAL WEATHER STATEMENT...

At 516 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Black Creek to 10 miles north of Little
Chute to Kaukauna to near Northern Lake Winnebago. Movement was
northeast at 30 mph.

Winds in excess of 30 mph will be possible with these storms.

Locations impacted include...
Green Bay, Kaukauna, Little Chute, Bellevue Town, Oneida, De Pere,
Howard, Ashwaubenon, Bellevue and Allouez.

People at Broadway Street in Green Bay should consider seeking safe
shelter if lightning is approaching.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4425 8831 4432 8831 4437 8840 4439 8854
      4464 8814 4464 8804 4458 8798 4461 8785
      4460 8783 4459 8778 4454 8778 4453 8776
      4447 8776 4439 8788 4424 8828
TIME...MOT...LOC 2216Z 236DEG 31KT 4441 8848 4442 8831 4438 8823 4427
8824 4419 8836

RDM

Special Weather Statement
National Weather Service Green Bay WI
542 PM CDT WED AUG 1 2018

WIZ030-036-012345-
Marathon WI-Portage WI-
542 PM CDT WED AUG 1 2018

...STRONG THUNDERSTORMS MOVING ACROSS THE AREA...

At 541 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Merrill to 6 miles northwest of Wausau to
near Spencer. Movement was east at 30 mph.

Winds in excess of 30 mph, small hail and locally heavy rainfall
will be possible with these storms.

Strong thunderstorms will be near...
  Wausau around 545 PM CDT.
  Rib Mountain around 550 PM CDT.
  Weston around 600 PM CDT.

Other locations impacted by these storms include Edgar, Big Eau
Pleine County Park, Elderon, Pike Lake, Moon, Little Chicago, March
Rapids, Hamburg, North Star and Dancy.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

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

&&

LAT...LON 4485 9032 4511 9000 4512 8922 4460 8923
      4464 8985 4469 8985 4469 9032
TIME...MOT...LOC 2241Z 275DEG 28KT 4517 8958 4501 8975 4468 9030

Eckberg