Severe Thunderstorm Warning 47, NWS Green Bay, WI

327 
WWUS53 KGRB 282309
SVSGRB

Severe Weather Statement
National Weather Service Green Bay WI
609 PM CDT Tue Jul 28 2020

WIC015-139-282345-
/O.CON.KGRB.SV.W.0047.000000T0000Z-200728T2345Z/
Calumet WI-Winnebago WI-
609 PM CDT Tue Jul 28 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM CDT
FOR SOUTHERN CALUMET AND SOUTHEASTERN WINNEBAGO COUNTIES...

At 609 PM CDT, severe thunderstorms were located along a line
extending from near Chilton to near St Anna to 6 miles east of
Southern Lake Winnebago, moving east at 50 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Chilton, St Anna, Central Lake Winnebago, Kiel, New Holstein,
Brothertown, Stockbridge, Wells, Brant and Killsnake Wildlife Area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Prepare immediately for large hail and damaging winds. People outside
should move to a shelter, inside a strong building and away from
windows.

&&

LAT...LON 4390 8864 4397 8845 4410 8834 4410 8804
      4389 8805 4389 8816 4394 8816 4394 8840
      4389 8841
TIME...MOT...LOC 2309Z 275DEG 43KT 4399 8822 4390 8823 4385 8827 

TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
 
$$

Bersch

095 
WWUS53 KGRB 282321
SVSGRB

Severe Weather Statement
National Weather Service Green Bay WI
621 PM CDT Tue Jul 28 2020

WIC139-282330-
/O.CAN.KGRB.SV.W.0047.000000T0000Z-200728T2345Z/
Winnebago WI-
621 PM CDT Tue Jul 28 2020

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN WINNEBAGO COUNTY
IS CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

LAT...LON 4389 8816 4394 8816 4394 8828 4400 8822
      4410 8818 4410 8804 4389 8805
TIME...MOT...LOC 2320Z 280DEG 41KT 4397 8806 4388 8807 4383 8811 

$$

WIC015-282345-
/O.CON.KGRB.SV.W.0047.000000T0000Z-200728T2345Z/
Calumet WI-
621 PM CDT Tue Jul 28 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM CDT
FOR SOUTHEASTERN CALUMET COUNTY...

At 620 PM CDT, severe thunderstorms were located along a line
extending from 6 miles northwest of Camp Rokilio Scout Camp to near
St Anna to near Elkhart Lake, moving east at 45 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Chilton, St Anna, Kiel, New Holstein, Wells, Brant, Killsnake
Wildlife Area, Jericho, Charlesburg and Hayton.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Prepare immediately for large hail and damaging winds. People outside
should move to a shelter, inside a strong building and away from
windows.

&&

LAT...LON 4389 8816 4394 8816 4394 8828 4400 8822
      4410 8818 4410 8804 4389 8805
TIME...MOT...LOC 2320Z 280DEG 41KT 4397 8806 4388 8807 4383 8811 

TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
 
$$

Bersch

740 
WWUS53 KGRB 282332
SVSGRB

Severe Weather Statement
National Weather Service Green Bay WI
632 PM CDT Tue Jul 28 2020

WIC015-282342-
/O.CAN.KGRB.SV.W.0047.000000T0000Z-200728T2345Z/
Calumet WI-
632 PM CDT Tue Jul 28 2020

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN CALUMET COUNTY IS
CANCELLED...
    
The storms which prompted the warning have moved out of the area.
Therefore, the warning has been cancelled.

LAT...LON 4389 8816 4394 8816 4394 8828 4400 8822
      4410 8818 4410 8804 4389 8805
TIME...MOT...LOC 2330Z 280DEG 43KT 4395 8789 4386 8790 4381 8794 

$$

Bersch

Area Forecast Discussion
National Weather Service Green Bay WI
235 PM CDT Tue Jul 28 2020

Forecast discussion for routine afternoon forecast issuance

.SHORT TERM...Tonight and Wednesday
Issued at 234 PM CDT Tue Jul 28 2020

Low level warm advection and the right entrance region of a 70
knot 300mb jet will produce vertical motion across central and
east central Wisconsin this afternoon and evening. Zero to 3km
shear of almost 40 knots and surface CAPE of 750 to 1200 J/kg
could support a few strong or marginally severe storms in the far
southern counties of the forecast area. A few showers are possible
further north.

Skies should clear later tonight. Lows will be a few degrees below
nromal in central and northcentral Wisconsin and close to normal
further east.

Mostly sunny skies and pleasant temperatures are likely Wednesday
as surface high pressure builds in from the north. There is a
slight chance of an afternoon shower along a lake or bay breeze,
but left out of the forecast for now. Highs will be about 5
degrees below average.

.LONG TERM...Wednesday Night Through Tuesday
Issued at 234 PM CDT Tue Jul 28 2020

Models continue to show a rather amplified/stagnant flow
consisting of a West Coast upper trough, a Rockies upper ridge and
a deep upper trough over eastern NOAM. This pattern would bring a
northwest flow into WI which typically brings at or below normal
temperatures and below normal precipitation. The next chance of
precipitation will not be until Saturday afternoon when a cold
front is forecast to move into the region. Cooler air behind this
front will send temperatures below normal for early next week.

A weak area of high pressure settles over the Great Lakes
Wednesday night and will provide for mostly clear skies, light/
variable winds and somewhat cool conditions across the northwoods.
Patchy fog is also possible across northern WI after midnight.
Look for min temperatures to range from the upper 40s north-
central WI, to around 60 degrees near Lake MI. This high pressure
remains anchored over the Great Lakes on Thursday as the main
storm track stays to our south. Anticipate diurnal cu to develop
with the heating of the day with max temperatures in the middle
70s north- central/near Lake MI, upper 70s to around 80 degrees
elsewhere.

The diurnal cu will fade Thursday evening, leaving Thursday night
a near carbon copy of Wednesday night. High pressure continues to
bring tranquil conditions with mostly clear skies, light north-
northeast winds and min temperatures in the upper 40s north-
central, to around 60 degrees near Lake MI. Another nice day on
tap across northeast WI on Friday with the surface high holding on
across the region. Under mostly sunny skies and north-northeast
winds under 10 mph, max temperatures to be near normal with
readings in the middle 70s lakeside, upper 70s to lower 80s
inland.

Another quiet night on Friday night, attention turns to a
shortwave trough/cold front that are forecast to approach the
western Great Lakes region on Saturday. Look for clouds to
increase toward central WI Saturday afternoon with a chance of
showers/thunderstorms reaching north-central WI during the
afternoon. Shear looks very weak, thus the threat of any severe
storms appears very low. Max temperatures for Saturday will warm a
bit with readings in the upper 70s to around 80 degrees north-
central/near Lake MI, lower to middle 80s elsewhere.

The shortwave trough digs southeast into the western Great Lakes,
while the modest cold front pushes southeast into WI Saturday
night. The increased lift from the cold front and increased mid-
level forcing from the trough will be enough to carry chance pops
through the night, although east-central WI may not see any
precipitation until closer to daybreak (if at all). The addition
of daytime heating may help to overcome the overall lack of
moisture (gulf is closed), a lack of instability (CAPES < 1K
J/KG), and a lack of shear (< 20 knots) to at least bring a small
chance of showers/weak thunderstorms to northeast WI on Sunday.
Max temperatures for Sunday to mainly be in the 75-80 degree
range.

A few leftover showers/storms may linger into Sunday evening over
east-central WI, otherwise the rest of Sunday night appears to be
dry as Canadian high pressure begins to build south into the
western Great Lakes. This high pressure will pull cooler/less
humid air into WI on Monday as max temperatures to be in the lower
to middle 70s north-central/near Lake MI, middle to upper 70s
elsewhere and dew points fall into the upper 40s to lower 50s.

The high pressure is progged to settle over the Great Lakes Monday
night into Tuesday, thus dry conditions are expected. Max
temperatures to be slightly warmer with middle 70s north-central/
lakeside, mainly upper 70s elsewhere.
&&

.AVIATION...for 18Z TAF Issuance
Issued at 1229 PM CDT Tue Jul 28 2020

An upper level disturbance may produce scattered showers and
thunderstorms this afternoon through early evening mostly south of
a CWA to GRB line. VFR conditions are expected outside any shower
activity. Skies should clear tonight, with just some VFR middle
clouds Wednesday.
&&

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

SHORT TERM.....RDM
LONG TERM......Kallas
AVIATION.......RDM

Hazardous Weather Outlook
National Weather Service Green Bay WI
224 PM CDT Tue Jul 28 2020

WIZ005-010>013-018>022-030-031-035>040-045-048>050-073-074-291930-
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-
224 PM CDT Tue Jul 28 2020

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

.DAY ONE...Tonight

Scattered thunderstorms are expected this afternoon through middle
evening, especially over central and east-central Wisconsin. There
is a chance of a marginally severe storm roughly south of a Hancock
to Oshkosh to Sheboygan line.

High levels and fast flows are likely on some rivers due to the
heavy rainfall last weekend.

.DAYS TWO THROUGH SEVEN...Wednesday through Tuesday

Thunderstorms are possible Saturday afternoon into Sunday. While
it is too early to determine the strength of these storms, initial
indications are that the severe threat would be very low at this
time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation should not be needed tonight, but spotters are
asked to report any wind gusts over 40 mph or any hail.

LMZ521-522-541>543-291930-
The Bay of Green Bay south of a line from Cedar River MI to Rock
Island Passage-Lake Michigan from Washington Island to Sheboygan-
224 PM CDT Tue Jul 28 2020

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

.DAY ONE...Tonight

There is a chance of thunderstorms from late this afternoon
through early this evening. Any thunderstorms that develop will
pose a hazard to boaters on the lake and bay.

.DAYS TWO THROUGH SEVEN...Wednesday through Tuesday

Thunderstorms are possible again Saturday night into Sunday.

RDM/AK

Special Weather Statement
National Weather Service Green Bay WI
425 PM CDT Tue Jul 28 2020

WIZ049-050-282215-
Calumet WI-Manitowoc WI-
425 PM CDT Tue Jul 28 2020

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN CALUMET AND SOUTHERN
MANITOWOC COUNTIES UNTIL 515 PM CDT...

At 424 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 6 miles southwest of Chilton to near St Anna to
8 miles west of Elkhart Lake. Movement was east at 35 mph.

Half inch hail and wind gusts up to 50 mph will be possible with
these storms.

Locations impacted include...
Chilton, Cleveland, St. Nazianz, St Anna, Camp Rokilio Scout Camp,
Central Lake Winnebago, Kiel, New Holstein, Newton and Spring Valley.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

These storms 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 4394 8816 4394 8840 4403 8840 4404 8761
      4390 8769 4389 8770 4389 8816
TIME...MOT...LOC 2124Z 268DEG 28KT 4399 8828 4391 8820 4385 8819

Kieckbusch

Special Weather Statement
National Weather Service Green Bay WI
453 PM CDT Tue Jul 28 2020

WIZ037>039-048-049-282245-
Calumet WI-Waupaca WI-Outagamie WI-Winnebago WI-Brown WI-
453 PM CDT Tue Jul 28 2020

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN BROWN...NORTHWESTERN
CALUMET...NORTHERN WINNEBAGO...SOUTHEASTERN WAUPACA AND SOUTHERN
OUTAGAMIE COUNTIES UNTIL 545 PM CDT...

At 453 PM CDT, Doppler radar was tracking a strengthening
thunderstorm near Fremont, or 16 miles southeast of Waupaca, moving
east at 30 mph.

Half inch hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Appleton, Menasha, Kaukauna, Little Chute, Kimberly, Fremont,
Northern Lake Winnebago, Darboy, Lake Poygan and High Cliff State
Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

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 4416 8887 4434 8887 4439 8815 4412 8814
TIME...MOT...LOC 2153Z 268DEG 28KT 4426 8877

Kieckbusch

Special Weather Statement
National Weather Service Green Bay WI
502 PM CDT Tue Jul 28 2020

WIZ045-048-282245-
Winnebago WI-Waushara WI-
502 PM CDT Tue Jul 28 2020

...SIGNIFICANT WEATHER ADVISORY FOR WINNEBAGO AND EASTERN WAUSHARA
COUNTIES UNTIL 545 PM CDT...

At 501 PM CDT, Doppler radar was tracking a strong thunderstorm over
Wautoma, moving east at 40 mph.

Penny size hail and winds in excess of 40 mph will be possible with
this storm.

This strong thunderstorm will be near...
  Redgranite around 515 PM CDT.
  Rush Lake around 535 PM CDT.

Other locations impacted by this storm include Pickett, Butte Des
Morts, Lake Butte Des Morts, Rivermoor, Borth, Winneconne, Harbor
Springs, Allenville, Tustin and Lake Butte Des Mor.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

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 4398 8889 4398 8938 4400 8944 4420 8930
      4415 8849 4389 8859 4390 8889
TIME...MOT...LOC 2201Z 288DEG 35KT 4406 8928

Bersch

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREEN BAY WI
522 PM CDT TUE JUL 28 2020

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

0504 PM     TSTM WND GST     WAUTOMA                 44.06N 89.28W
07/28/2020  M47 MPH          WAUSHARA           WI   AWOS

&&

SAC

Special Weather Statement
National Weather Service Green Bay WI
544 PM CDT Tue Jul 28 2020

WIZ038>040-048>050-282345-
Calumet WI-Kewaunee WI-Outagamie WI-Winnebago WI-Manitowoc WI-
Brown WI-
544 PM CDT Tue Jul 28 2020

...THUNDERSTORMS MOVING ACROSS THE FOX VALLEY AND LAKE SHORE...

At 543 PM CDT, Doppler radar was tracking a strong thunderstorm near
High Cliff State Park, or 11 miles south of Appleton, moving east at
40 mph.

Pea size hail and winds in excess of 30 mph will be possible with
this storm.

Locations impacted include...
Appleton, Oshkosh, Manitowoc, Menasha, Kaukauna, Little Chute,
Kimberly, Chilton, Brillion and Denmark.

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 4390 8869 4440 8865 4443 8745 4432 8748
      4425 8747 4414 8750 4407 8759 4390 8769
      4389 8816 4394 8816 4394 8840 4389 8840
TIME...MOT...LOC 2243Z 270DEG 34KT 4412 8833

Bersch

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREEN BAY WI
554 PM CDT TUE JUL 28 2020

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

0546 PM     TSTM WND GST     2 SSW OSHKOSH           43.98N 88.57W
07/28/2020  M68 MPH          WINNEBAGO          WI   TRAINED SPOTTER

&&

SAC