Severe Thunderstorm Warning 54, NWS Green Bay, WI

511 
WWUS53 KGRB 282120
SVSGRB

Severe Weather Statement
National Weather Service Green Bay WI
420 PM CDT TUE AUG 28 2018

WIC139-282129-
/O.CAN.KGRB.SV.W.0054.000000T0000Z-180828T2145Z/
Winnebago WI-
420 PM CDT TUE AUG 28 2018

...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.

A Severe Thunderstorm Watch remains in effect until 900 PM CDT for
northeastern and east central Wisconsin.

LAT...LON 4411 8825 4430 8805 4431 8786 4389 8793
      4389 8816 4394 8816 4394 8835
TIME...MOT...LOC 2119Z 266DEG 33KT 4422 8804 4391 8831 

$$

WIC009-015-071-282145-
/O.CON.KGRB.SV.W.0054.000000T0000Z-180828T2145Z/
Brown WI-Calumet WI-Manitowoc WI-
420 PM CDT TUE AUG 28 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM CDT
FOR SOUTH CENTRAL BROWN...SOUTHEASTERN CALUMET AND WESTERN MANITOWOC
COUNTIES...

At 419 PM CDT, severe thunderstorms were located along a line
extending from near Brillion to near Southern Lake Winnebago, moving
east at 40 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Chilton, Brillion, St. Nazianz, St Anna, Central Lake Winnebago,
Kiel, New Holstein, Morrison, Brothertown and Reedsville.

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.

Intense thunderstorm lines can produce brief tornadoes and widespread
significant wind damage. Although a tornado is not immediately
likely, it is best to move to an interior room on the lowest floor of
a building. These storms may cause serious injury and significant
property damage.

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

&&

LAT...LON 4411 8825 4430 8805 4431 8786 4389 8793
      4389 8816 4394 8816 4394 8835
TIME...MOT...LOC 2119Z 266DEG 33KT 4422 8804 4391 8831 

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

KLB

970 
WWUS53 KGRB 282135
SVSGRB

Severe Weather Statement
National Weather Service Green Bay WI
435 PM CDT TUE AUG 28 2018

WIC009-282144-
/O.CAN.KGRB.SV.W.0054.000000T0000Z-180828T2145Z/
Brown WI-
435 PM CDT TUE AUG 28 2018

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL BROWN COUNTY IS
CANCELLED...

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

A Severe Thunderstorm Watch remains in effect until 900 PM CDT for
east central Wisconsin.

LAT...LON 4422 8802 4423 8787 4389 8793 4389 8816
      4394 8816
TIME...MOT...LOC 2134Z 264DEG 30KT 4423 8788 4392 8815 

$$

WIC015-071-282145-
/O.CON.KGRB.SV.W.0054.000000T0000Z-180828T2145Z/
Calumet WI-Manitowoc WI-
435 PM CDT TUE AUG 28 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM CDT
FOR SOUTHEASTERN CALUMET AND SOUTHWESTERN MANITOWOC COUNTIES...

At 434 PM CDT, severe thunderstorms were located along a line
extending from 7 miles south of Denmark to St Anna, moving east at 35
mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
St. Nazianz, St Anna, Kiel, New Holstein, Reedsville, Maple Grove,
Wells, Louis Corners, Killsnake Wildlife Area and Grimms.

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.

Intense thunderstorm lines can produce brief tornadoes and widespread
significant wind damage. Although a tornado is not immediately
likely, it is best to move to an interior room on the lowest floor of
a building. These storms may cause serious injury and significant
property damage.

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

&&

LAT...LON 4422 8802 4423 8787 4389 8793 4389 8816
      4394 8816
TIME...MOT...LOC 2134Z 264DEG 30KT 4423 8788 4392 8815 

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

KLB

826 
WWUS53 KGRB 282146
SVSGRB

Severe Weather Statement
National Weather Service Green Bay WI
446 PM CDT TUE AUG 28 2018

WIC015-071-282155-
/O.EXP.KGRB.SV.W.0054.000000T0000Z-180828T2145Z/
Calumet WI-Manitowoc WI-
446 PM CDT TUE AUG 28 2018

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN CALUMET AND
SOUTHWESTERN MANITOWOC COUNTIES HAS EXPIRED...
    
The storms which prompted the warning have moved out of the area.
Therefore, the warning has been allowed to expire.

A Severe Thunderstorm Watch remains in effect until 900 PM CDT for
east central Wisconsin.

Remember, a Tornado Warning still remains in effect for southern 
Manitowoc County.

LAT...LON 4422 8802 4423 8787 4389 8793 4389 8816
      4394 8816
TIME...MOT...LOC 2145Z 264DEG 30KT 4424 8776 4393 8803 

$$

KLB

Area Forecast Discussion
National Weather Service Green Bay WI
218 PM CDT Tue Aug 28 2018

Forecast discussion for routine afternoon forecast issuance

.SHORT TERM...Tonight and Wednesday
Issued at 218 PM CDT Tue Aug 28 2018

The latest RAP analysis and satellite/radar imagery show a cold
front stretching from La Crosse to Wausau to the tip of Door
County early this afternoon. Widespread low clouds surged
southeast late this morning to cover most of north-central and NE
WI, setting up a relatively tight temp gradient across the region.
A band of showers and storms continues to track northeast behind
the front and into north-central WI within a zone of mid-level
fgen. Meanwhile, more cellular thunderstorms are developing ahead
of the front and along/south of an outflow boundary over
southwest WI and northeast IA. Despite widespread low clouds, ML
capes of 1500-2500 j/kg and deep layer shear of 45-50 kts
continues to point towards a severe storm threat developing south
of a Marshfield to Oconto to Sturgeon Bay as storms push
northeast along this outflow boundary and ahead of the front
through the rest of the afternoon. Given storm evolution to our
southwest, will extend the flash flood watch across Waupaca and
Portage counties. Damaging winds and torrential rains will be the
main threat, and hail to a lesser extent. Also cannot rule out an
isolated spin up given the beefy 0-3 km shear vectors.

Tonight...Shower and thunderstorm chances will be ongoing across
much of the region at 00z. Based on the latest HRRR runs, it
appears that the strongest thunderstorm activity will be occurring
over east-central WI early this evening, but then exit the area
around 02-03z. Therefore it appears the best chance of severe
weather will continue through that time period before evolving
into more of a heavy rain with embedded storms scenario. Potential
for flooding remains possible in the flash flood watch area due
1-3 inches of rainfall in the forecast, with locally higher
amounts. Precip will exit to the east overnight, with widespread
clouds and cooler conditions moving across the area.

.LONG TERM...Wednesday Night Through Tuesday
Issued at 218 PM CDT Tue Aug 28 2018

Wednesday through Thursday: The cold front that produced all the
active weather over the past couple days will continue to shift off
to the east of the area through the day Wednesday. At the same time,
a dry surface ridge will slide across the CWA through this time
period. Aloft, the upper level trough axis will swing through the
Western Great Lakes region during the day Wednesday as heights begin
to rise Wednesday night into the day Thursday. The weather will be
much cooler and fairly quiet. High temperatures will be in the 60s
to around 70. Humidity values will drop as well, leading to more
comfortable conditions.

Thursday night through Saturday: The surface ridge and upper-level
ridge will slide to the east Thursday night allowing for a more
moist southerly return flow into the Western Great Lakes. These
features will continue eastward through Saturday as as a more
wrapped-up surface low and closed upper level low slides from
Manitoba into Hudson Bay. This will drag a cold front across the CWA
Friday afternoon into Friday night. Additionally, a shortwave is
progged to slide through the Western Great Lakes as well. While the
overall instability will be determined by the exact timing of the
front, it does look like enough instability will be around to
increase the risk of thunderstorms. Models are depicting around 20
to 30 knots of deep-layer shear ahead of the front, so severe
weather is not out of the question. Again, if the front comes
through during peak heating, the chances of severe weather will
increase, while a delay toward the later evening hours would result
in a diminished severe potential. Temperatures for this time period
will warm to above normal, once again, with highs in mid to upper
70s to low 80s.

Saturday night through Monday: Medium range models then point toward
the cold front shifting to the east of the area Saturday night with
dry high pressure building in on Sunday. At the same time, upper-
level flow is expected to become nearly zonal across the Western
Great Lakes. This will lead to near normal temperatures for this
time period with only small chance of showers and thunderstorms,
mainly on Monday. This is basically what the consensus of the models
is showing.
&&

.AVIATION...for 18Z TAF Issuance
Issued at 1247 PM CDT Tue Aug 28 2018

Numerous cloud decks to contend with this afternoon, but
generally expecting MVFR cigs in precipitation free areas. Showers
and thunderstorms are expected to move into the area this
afternoon, which will lower cigs and visibility to IFR at times.
The bulk of this activity will continue through mid to late
evening and gradually taper off from northwest to southeast. A few
showers are possible across east- central Wisconsin through early
Wednesday morning. Cigs will also lower to IFR levels after
midnight across the forecast area. Improvements are expected
through the second half of Wednesday morning, with skies
eventually clearing out beyond the TAF period during the
afternoon.
&&

.GRB WATCHES/WARNINGS/ADVISORIES...
Flash Flood Watch until midnight CDT tonight for WIZ036>040-045-
048>050.

Beach Hazards Statement until 4 PM CDT this afternoon for WIZ022-
040-050.
&&

SHORT TERM.....MPC
LONG TERM......Cooley
AVIATION.......KLB

Hazardous Weather Outlook
National Weather Service Green Bay WI
224 PM CDT Tue Aug 28 2018

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 Aug 28 2018

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

.DAY ONE...Tonight

Heavy rainfall could result in flash flooding through midnight,
especially in east-central Wisconsin, and parts of central
Wisconsin.

Severe thunderstorms are also possible through midnight, mainly
south of a line from Marshfield to Mountain to Sturgeon Bay. The
primary risk will be damaging winds, though large hail and an
isolated tornado are also possible.

Large waves may result in dangerous currents and hazardous
swimming conditions on Lake Michigan beaches into this afternoon.

.DAYS TWO THROUGH SEVEN...Wednesday through Tuesday

The next chance for thunderstorms arrives Friday and continues
through Saturday. It is too early to determine the severe
potential at this time.

.SPOTTER INFORMATION STATEMENT...

Spotters are requested to report rainfall amounts in excess of
one inch, flooding, or any other severe weather to the National
Weather Service in Green Bay.

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 Aug 28 2018

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

.DAY ONE...Tonight

Thunderstorms will pose a hazard to boaters on the lake and bay,
mainly through late tonight. Conditions hazardous to small craft
will persist on the lake until late afternoon.

.DAYS TWO THROUGH SEVEN...Wednesday through Tuesday

Thunderstorms are possible Friday into Saturday.

MPC/Cooley

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREEN BAY WI
314 PM CDT TUE AUG 28 2018

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

0305 PM     TSTM WND DMG     1 W WAUTOMA             44.06N 89.30W
08/28/2018                   WAUSHARA           WI   PUBLIC

            TREE DOWN WEST OF WAUTOMA. ALSO PEA SIZE HAIL NEAR
            REDGRANITE.

&&

Special Weather Statement
National Weather Service Green Bay WI
333 PM CDT TUE AUG 28 2018

WIZ022-040-282100-
Kewaunee WI-Door WI-
333 PM CDT TUE AUG 28 2018

...SPECIAL WEATHER STATEMENT...

At 333 PM CDT, Doppler radar was tracking a strong thunderstorm 7
miles northwest of Algoma, or 12 miles east of Bay Shore Park, moving
east at 30 mph.

Half inch hail and winds in excess of 30 mph will be possible with
this storm.

Locations impacted include...
Sturgeon Bay, Algoma, Luxemburg, Brussels, Casco, Forestville, Clay
Banks, Lincoln, Gregorville and Rankin.

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.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

A Severe Thunderstorm Watch remains in effect until 900 PM CDT for
northeastern Wisconsin.

LAT...LON 4477 8726 4458 8738 4454 8775 4472 8773
      4483 8723 4480 8722
TIME...MOT...LOC 2033Z 256DEG 33KT 4466 8756

Cooley

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREEN BAY WI
342 PM CDT TUE AUG 28 2018

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

0341 PM     HEAVY RAIN       ASHWAUBENON             44.46N 88.08W
08/28/2018  M1.44 INCH       BROWN              WI   OFFICIAL NWS OBS

            IN THE LAST 1 HOUR.

&&

SAC

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREEN BAY WI
344 PM CDT TUE AUG 28 2018

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

0343 PM     HAIL             N OSHKOSH               44.01N 88.55W
08/28/2018  M0.25 INCH       WINNEBAGO          WI   TRAINED SPOTTER

            INTERSECTION OF HIGHWAY 41 AND 76.

&&

SAC

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREEN BAY WI
358 PM CDT TUE AUG 28 2018

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

0345 PM     FLOOD            GREEN BAY               44.51N 88.00W
08/28/2018                   BROWN              WI   NWS EMPLOYEE

            URBAN FLOODING. ROADS COVERED BY 4-6 INCHES OF WATER.

&&

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREEN BAY WI
359 PM CDT TUE AUG 28 2018

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

0357 PM     TSTM WND GST     NEENAH                  44.18N 88.44W
08/28/2018  M62 MPH          WINNEBAGO          WI   TRAINED SPOTTER

&&