Severe Thunderstorm Warning 48, NWS Milwaukee, WI

681 
WWUS53 KMKX 180130
SVSMKX

Severe Weather Statement
National Weather Service Milwaukee/Sullivan WI
830 PM CDT WED MAY 17 2017

WIC025-045-049-065-105-180200-
/O.CON.KMKX.SV.W.0048.000000T0000Z-170518T0200Z/
Lafayette WI-Green WI-Iowa WI-Rock WI-Dane WI-
830 PM CDT WED MAY 17 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 PM CDT
FOR LAFAYETTE...GREEN...EASTERN IOWA...WESTERN ROCK AND DANE
COUNTIES...

At 829 PM CDT, severe thunderstorms were located along a line
extending from near Mazomanie to 6 miles northeast of Blanchardville
to near Nora, moving east at 35 mph.

HAZARD...60 mph wind gusts and quarter size hail. 

SOURCE...Law enforcement. Trees and powerlines were down in 
         Dodgeville and Mineral Point at 756 pm. 

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees. 

Locations impacted include...
Madison, Sun Prairie, Fitchburg, Middleton, Stoughton, Waunakee,
Monroe, Verona, Oregon, McFarland, Monona, Mount Horeb, Windsor,
Evansville, Sauk City, Brodhead, Darlington, Deforest, Cross Plains
and Belleville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This is a DANGEROUS SITUATION. These storms are producing widespread 
wind damage across southwest Wisconsin. SEEK SHELTER NOW inside a 
sturdy structure and stay away from windows.
 
&&

A tornado watch remains in effect until 1100 PM CDT for south central
Wisconsin.

LAT...LON 4251 9026 4288 9011 4315 9008 4315 9005
      4320 8999 4320 8985 4324 8980 4326 8974
      4329 8971 4328 8926 4295 8918 4250 8932
TIME...MOT...LOC 0129Z 262DEG 31KT 4323 8985 4290 8981 4249 8993 

HAIL...1.00IN
WIND...60MPH
 
$$

HALBACH

683 
WWUS53 KMKX 180141
SVSMKX

Severe Weather Statement
National Weather Service Milwaukee/Sullivan WI
841 PM CDT WED MAY 17 2017

WIC025-045-049-065-105-180200-
/O.CON.KMKX.SV.W.0048.000000T0000Z-170518T0200Z/
Lafayette WI-Green WI-Iowa WI-Rock WI-Dane WI-
841 PM CDT WED MAY 17 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 PM CDT
FOR LAFAYETTE...GREEN...EASTERN IOWA...WESTERN ROCK AND DANE
COUNTIES...

At 840 PM CDT, severe thunderstorms were located along a line
extending from near Sauk City to near Verona to near Monroe, moving
east at 40 mph.

HAZARD...70 mph wind gusts and quarter size hail. 

SOURCE...Law enforcement. At 756 pm, damaging winds were reported 
         in Darlington and Mineral Point. 

IMPACT...Hail damage to vehicles is expected. Expect considerable 
         tree damage. Wind damage is also likely to mobile homes, 
         roofs, and outbuildings. 

Locations impacted include...
Madison, Sun Prairie, Fitchburg, Middleton, Stoughton, Waunakee,
Monroe, Verona, Oregon, McFarland, Monona, Mount Horeb, Windsor,
Evansville, Sauk City, Brodhead, Darlington, Deforest, Cross Plains
and Belleville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This is a DANGEROUS SITUATION. These storms are producing widespread 
wind damage across southwest Wisconsin. SEEK SHELTER NOW inside a 
sturdy structure and stay away from windows.
 
&&

A tornado watch remains in effect until 1100 PM CDT for south central
Wisconsin.

LAT...LON 4251 9026 4288 9011 4315 9008 4315 9005
      4320 8999 4320 8985 4324 8980 4326 8974
      4329 8971 4328 8926 4295 8918 4250 8932
TIME...MOT...LOC 0140Z 248DEG 37KT 4326 8962 4294 8959 4256 8973 

HAIL...1.00IN
WIND...70MPH
 
$$

HALBACH

847 
WWUS53 KMKX 180152
SVSMKX

Severe Weather Statement
National Weather Service Milwaukee/Sullivan WI
852 PM CDT WED MAY 17 2017

WIC025-045-049-065-105-180200-
/O.CON.KMKX.SV.W.0048.000000T0000Z-170518T0200Z/
Lafayette WI-Green WI-Iowa WI-Rock WI-Dane WI-
852 PM CDT WED MAY 17 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 PM CDT
FOR EASTERN LAFAYETTE...GREEN...SOUTHEASTERN IOWA...WESTERN ROCK AND
DANE COUNTIES...

At 852 PM CDT, severe thunderstorms were located along a line
extending from near Lodi to near Fitchburg to near Monroe, moving
east at 35 mph.

HAZARD...60 mph wind gusts and nickel size hail. 

SOURCE...Radar indicated. 

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

Locations impacted include...
Madison, Sun Prairie, Fitchburg, Middleton, Stoughton, Waunakee,
Monroe, Verona, Oregon, McFarland, Monona, Mount Horeb, Windsor,
Evansville, Sauk City, Brodhead, Deforest, Cross Plains, Belleville
and New Glarus.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

A tornado watch remains in effect until 100 AM CDT for south central
Wisconsin.

LAT...LON 4251 9007 4326 8974 4329 8971 4328 8926
      4295 8918 4250 8932
TIME...MOT...LOC 0152Z 262DEG 31KT 4327 8949 4295 8946 4257 8960 

HAIL...0.88IN
WIND...60MPH
 
$$

HALBACH

Area Forecast Discussion
National Weather Service Milwaukee/Sullivan WI
554 PM CDT Wed May 17 2017

.AVIATION(00Z TAFS)...Tight pressure gradient ahead of low
pressure moving through western Iowa will continue to generate
strong gusty winds for 1-2 more hours before insolation weakens.
Otherwise, scattered strong to severe thunderstorms will affect
south central WI this evening, and possible southeast Wisconsin
late in the evening.

&&

.PREV DISCUSSION... (Issued 235 PM CDT WED MAY 17 2017)

TONIGHT AND THURSDAY - Forecast Confidence...Medium.

The focus through the evening hours will be on the potential for
severe thunderstorms. Not much has changed with the setup, with
plenty of moisture, instability, and wind flow with strong low
pressure approaching from the southwest. The main severe threat
through the afternoon hours will be wind/hail. Wind shear will be
stronger toward the evening hours, increasing the potential for a
tornado threat.

Meso models show the western half of the forecast area to have the
best potential for storms through the late afternoon and already
seeing a few storms in the west. Some questions as to areal extent
and coverage of storms through late afternoon, with a couple models
showing a farther eastward extent of scattered storms. A more
focused line of storms is likely during the evening hours, moving in
from the southwest, then spreading eastward by late evening. Models
continue to show somewhat of a weakening trend toward Lake Michigan.

Storms are expected to wind down by midnight, with a few showers
lingering overnight in the northwest toward the low. A round of
light showers is possible tomorrow, from mid morning into the
afternoon as a cold front drops through the area. Temps will likely
cool behind the front from northwest to southeast from late morning
into the afternoon.

THURSDAY NIGHT THROUGH SATURDAY - Forecast Confidence...Medium.

Showers and t-storms expected to return to southern WI later Friday
night into Saturday as upper ridge slides off to the east and low
pressure over the southwest fills and gets ejected northeast into
the central and northern Plains.  Short wave reamplifies and takes
on slight negative tilt as it progresses through the northern Plains
and re-energizes late in the period. Will continue likely wording
for later Friday night into Saturday when axis of strong low level
jet passes across southern WI, in rough timing with potential
mesoscale convective eddy generated by upstream plains convection.

EXTENDED PERIOD...

SATURDAY NIGHT THROUGH WEDNESDAY - Forecast Confidence...Medium.

Cooler weather is expected early in the period as the main rain area
moves off to the northeast.  Differences in extended guidance on the
strength and timing of upper low over southern Canada through early
next week.  However Medium range guidance in somewhat agreement on
short wave trof rotating around upper low across the Upper Midwest
around Tuesday or Wednesday bringing another chance of showers and
storms to the area.

AVIATION (18Z TAFS)...

A couple more rounds of storms are expected this afternoon and
evening ahead of approaching low pressure. Some of the storms may be
severe. A few showers may linger past midnight, with another round
of showers possible tomorrow as the cold front slides through. The
showers tomorrow will be on the light side.

Low level wind shear looks possible again tonight...from around
mid/late evening through late tonight.

Outside of lower visibilities in thunderstorms, mainly VFR
conditions are expected into tonight. Will likely see lower ceilings
tomorrow near and behind the advancing cold front.

MARINE...

Southerly winds will remain gusty through Thursday, veering to the
southwest by Thursday morning. With little to no onshore component
to the winds, waves should generally stay in the 3 to 5 foot range
through Thursday afternoon.

After a brief break, will likely see winds/waves pick back up
Thursday evening into Friday. Another Small Craft Advisory will
probably be needed.

&&

.MKX WATCHES/WARNINGS/ADVISORIES...
WI...None.
LM...Small Craft Advisory until 4 PM CDT Thursday for LMZ643>646.

&&

Tonight/Thursday and Marine...DDV
Thursday Night through Wednesday/Aviation...MBK

Hazardous Weather Outlook
National Weather Service Milwaukee/Sullivan WI
319 PM CDT Wed May 17 2017

WIZ046-047-051-052-056>060-062>072-182030-
Marquette-Green Lake-Fond Du Lac-Sheboygan-Sauk-Columbia-Dodge-
Washington-Ozaukee-Iowa-Dane-Jefferson-Waukesha-Milwaukee-
Lafayette-Green-Rock-Walworth-Racine-Kenosha-
319 PM CDT Wed May 17 2017

This Hazardous Weather Outlook is for portions of east central
Wisconsin, south central Wisconsin, and southeast Wisconsin.

.DAY ONE...Late this Afternoon and Tonight

Scattered to numerous thunderstorms are expected over south
central Wisconsin through this evening with a chance for
thunderstorms in the southeast. The period of greatest concern
for severe thunderstorms is late this afternoon into the early
evening especially across south central Wisconsin where there is a
greater risk of tornadoes, large hail and damaging winds.

A tornado watch is in effect until 10 pm CDT for south central
Wisconsin along and west of a line from Fond du Lac to Jefferson
to Janesville.

.DAYS TWO THROUGH SEVEN...Thursday through Wednesday

There is a chance of thunderstorms Friday night into Saturday
evening. A few severe thunderstorms producing large hail and
damaging winds are possible.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed this afternoon and evening.

LMZ643>646-182030-
Sheboygan to Port Washington WI-
Port Washington to North Point Light WI-
North Point Light to Wind Point WI-
Wind Point WI to Winthrop Harbor IL-
319 PM CDT Wed May 17 2017

This Hazardous Weather Outlook is for portions of Lake Michigan.

.DAY ONE...Late this Afternoon and Tonight

A small craft advisory remains in effect for breezy southerly
winds.

There is a chance of thunderstorms late this afternoon and
evening. An isolated thunderstorm may produce large hail and
damaging winds.

.DAYS TWO THROUGH SEVEN...Thursday through Wednesday

The small craft advisory remains in effect through Thursday
afternoon for breezy southerly winds.

Northeast winds may reach Small Craft Advisory levels again
Thursday night into early Friday.

There is a chance of thunderstorms Friday night into Saturday
evening. A few severe thunderstorms producing large hail and
damaging winds are possible.

www.weather.gov/mkx

MBK

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
754 PM CDT WED MAY 17 2017

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

0651 PM     TSTM WND DMG     1 SE MILTON             42.77N 88.93W
05/17/2017                   ROCK               WI   PUBLIC

            LARGE BRANCHES DOWN ON POWER LINES NEAR
            SOUTH MILTON AND SHOPIERE ROAD.

&&

MRC

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
756 PM CDT WED MAY 17 2017

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

0701 PM     TSTM WND DMG     WHITEWATER              42.84N 88.74W
05/17/2017                   WALWORTH           WI   PUBLIC

            NUMEROUS TREES AND TREE LIMBS DOWN IN
            WHITEWATER. RELAYED VIA SOCIAL MEDIA AND
            AMATEUR RADIO.

&&

MRC

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
800 PM CDT WED MAY 17 2017

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

0753 PM     TSTM WND DMG     1 NW BELMONT            42.75N 90.34W
05/17/2017                   LAFAYETTE          WI   911 CALL CENTER

            TREES DOWN ALONG STATE HWY 126.

&&

MRC

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
804 PM CDT WED MAY 17 2017

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

0755 PM     TSTM WND GST     3 NW MINERAL POINT      42.89N 90.23W
05/17/2017  M54 MPH          IOWA               WI   AWOS

&&

MRC

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
809 PM CDT WED MAY 17 2017

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

0725 PM     TSTM WND DMG     3 SSW OCONOMOWOC LAKE   43.06N 88.47W
05/17/2017                   WAUKESHA           WI   AMATEUR RADIO

            NUMEROUS TREES DOWN NEAR HWY 67 AND I-94.

&&

MRC

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
816 PM CDT WED MAY 17 2017

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

0700 PM     TSTM WND DMG     3 SSE FORT ATKINSON     42.88N 88.82W
05/17/2017                   JEFFERSON          WI   PUBLIC

            SIX INCH DIAMETER TREE LIMB DOWN. PEA SIZE
            HAIL.

&&

MRC