Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 26, NWS Milwaukee, WI

June 30, 20196 counties in Wisconsin

NWS Milwaukee, WI issued this severe thunderstorm warning at Jun 30, 2019, 11:59 AM CDT for 6 counties in Wisconsin. It was in force for 76 min. 9 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Jun 30, 2019, 11:59 AM CDT (16:59 UTC)
Expired
Jun 30, 2019, 1:15 PM CDT
In force
76 min
Issued by
NWS Milwaukee, WI
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Jefferson County, WI, Kenosha County, WI, Racine County, WI, Rock County, WI, Walworth County, WI, Waukesha County, WI

The radar

The Milwaukee radar (KMKX), 22 km from the middle of the area, began a volume at 17:01 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

TimeReportWhereRemark
Jun 30, 12:25 PM CDTTSTM WND DMGDelavan, WITREE DAMAGE THROUGHOUT THE COUNTY. DELAVAN IS ONE HARD HIT AREA.
Jun 30, 12:25 PM CDTTSTM WND DMGFontana-On-Geneva, WITREE DAMAGE THROUGHOUT THE COUNTY. FONTANA IS ONE OF THE HARD HIT AREAS.
Jun 30, 12:28 PM CDTTSTM WND DMGDousman, WILARGE BRANCHES SNAPPED OFF.
Jun 30, 12:30 PM CDTTSTM WND DMG5 Nne Mukwonago, WILARGE TREE DOWN.
Jun 30, 12:40 PM CDTTSTM WND DMGPell Lake, WILARGE TREE LIMBS DOWN. ESTIMATED 60 MPH GUSTS.
Jun 30, 12:50 PM CDTTSTM WND DMG3 Nnw Silver Lake, WISEVERAL TREE BRANCHES DOWN.
Jun 30, 12:53 PM CDTTSTM WND DMG1 W Genoa City, WIWIND DAMAGED A TRANSFORMER IN THE AREA NEAR RIDGEVIEW DRIVE AND COUNTY ROAD B.
Jun 30, 1:03 PM CDTTSTM WND DMG1 Ssw Paddock Lake, WITREES DOWN ACROSS THE ROAD.
Jun 30, 1:03 PM CDTTSTM WND GST 58Silver Lake, WINUMEROUS LARGE TREES UPROOTED AND SNAPPED IN HALF. NUMEROUS POWER LINES DOWN.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched 10 storm reports to this severe thunderstorm warning; the first came 1 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jun 30, 11:43 AM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 5.0 hours before the alert went out and 187 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 2019-06-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 29 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 2019-06-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 131 square meters per square second.193958Sfc1 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
29 J/kg
Mixed-layer CIN
-408 J/kg
Mixed-layer LCL
1162 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
131 m²/s²
0-3 km storm-relative helicity
257 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

As transmitted.

556 
WUUS53 KMKX 301659
SVRMKX
WIC055-059-101-105-127-133-301815-
/O.NEW.KMKX.SV.W.0026.190630T1659Z-190630T1815Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Milwaukee/Sullivan WI
1159 AM CDT Sun Jun 30 2019

The National Weather Service in Milwaukee/Sullivan has issued a

* Severe Thunderstorm Warning for...
  Walworth County in southeastern Wisconsin...
  Eastern Rock County in south central Wisconsin...
  Racine County in southeastern Wisconsin...
  Waukesha County in southeastern Wisconsin...
  Southern Jefferson County in southeastern Wisconsin...
  Kenosha County in southeastern Wisconsin...

* Until 115 PM CDT.

* At 1157 AM CDT, severe thunderstorms were located along a line
  extending from near Wales to Milton, moving southeast at 35 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Law enforcement. There have been numerous reports of tree 
           damage and power outages.

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

* Locations impacted include...
  Kenosha, Waukesha, Janesville, New Berlin, Brookfield, Muskego,
  Pleasant Prairie, Whitewater, Pewaukee, Fort Atkinson, Sussex,
  Elkhorn, Hartland, Delavan, Lake Geneva, Mukwonago, Delafield, Twin
  Lakes, Milton and Union Grove.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Damaging winds and continuous cloud to ground lightning is occurring 
with these storms. Move indoors immediately.
Lightning is one of nature's leading killers. Remember, if you can
hear thunder, you are close enough to be struck by lightning.

&&

LAT...LON 4250 8893 4285 8902 4319 8832 4319 8823
      4289 8807 4284 8807 4284 8804 4249 8786
TIME...MOT...LOC 1657Z 336DEG 31KT 4300 8832 4279 8893 

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

MRC
5 follow-up statements
432 
WWUS53 KMKX 301719
SVSMKX

Severe Weather Statement
National Weather Service Milwaukee/Sullivan WI
1219 PM CDT Sun Jun 30 2019

WIC055-059-101-105-127-133-301815-
/O.CON.KMKX.SV.W.0026.000000T0000Z-190630T1815Z/
Walworth WI-Rock WI-Racine WI-Waukesha WI-Jefferson WI-Kenosha WI-
1219 PM CDT Sun Jun 30 2019

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 115 PM CDT
FOR WALWORTH...EASTERN ROCK...RACINE...WAUKESHA...SOUTHERN JEFFERSON
AND KENOSHA COUNTIES...

At 1218 PM CDT, severe thunderstorms were located along a line
extending from near Waterford North to near Clinton, moving southeast
at 35 mph.

HAZARD...60 mph wind gusts.

SOURCE...Law enforcement. There have been numerous reports of tree 
         damage and power outages.

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

Locations impacted include...
Kenosha, Waukesha, Janesville, New Berlin, Brookfield, Muskego,
Pleasant Prairie, Whitewater, Pewaukee, Sussex, Elkhorn, Hartland,
Delavan, Lake Geneva, Mukwonago, Delafield, Twin Lakes, Milton, Union
Grove and East Troy.

People attending Hometown Celebration in Hartland should seek safe
shelter immediately!

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Continuous cloud to ground lightning is occurring with these storms.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.

If on or near Lake Geneva, get away from the water and move indoors 
or inside a vehicle. remember, lightning can strike out to 15 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 4250 8893 4285 8902 4297 8855 4319 8823
      4289 8807 4284 8807 4284 8804 4249 8786
TIME...MOT...LOC 1718Z 336DEG 31KT 4283 8822 4262 8883 

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

MRC
534 
WWUS53 KMKX 301731
SVSMKX

Severe Weather Statement
National Weather Service Milwaukee/Sullivan WI
1231 PM CDT Sun Jun 30 2019

WIC055-301740-
/O.CAN.KMKX.SV.W.0026.000000T0000Z-190630T1815Z/
Jefferson WI-
1231 PM CDT Sun Jun 30 2019

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN JEFFERSON 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 600 PM CDT for
south central and southeastern Wisconsin.

LAT...LON 4250 8893 4285 8902 4284 8855 4287 8854
      4299 8820 4289 8807 4284 8807 4284 8804
      4249 8786
TIME...MOT...LOC 1730Z 336DEG 31KT 4274 8816 4253 8877 

$$

WIC059-101-105-127-133-301815-
/O.CON.KMKX.SV.W.0026.000000T0000Z-190630T1815Z/
Walworth WI-Rock WI-Racine WI-Waukesha WI-Kenosha WI-
1231 PM CDT Sun Jun 30 2019

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 115 PM CDT
FOR WALWORTH...EASTERN ROCK...RACINE...SOUTHERN WAUKESHA AND KENOSHA
COUNTIES...

At 1230 PM CDT, severe thunderstorms were located along a line
extending from near Eagle Lake to near Sharon, moving southeast at 35
mph.

HAZARD...60 mph wind gusts.

SOURCE...Law enforcement. There have been numerous reports of tree 
         damage and power outages.

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

Locations impacted include...
Kenosha, Waukesha, Janesville, New Berlin, Muskego, Pleasant Prairie,
Whitewater, Elkhorn, Delavan, Lake Geneva, Mukwonago, Twin Lakes,
Milton, Union Grove, East Troy, Paddock Lake, Williams Bay, Camp
Lake, Wind Lake and Rochester.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

If on or near Lake Geneva, get away from the water and move indoors 
or inside a vehicle. remember, lightning can strike out to 15 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 4250 8893 4285 8902 4284 8855 4287 8854
      4299 8820 4289 8807 4284 8807 4284 8804
      4249 8786
TIME...MOT...LOC 1730Z 336DEG 31KT 4274 8816 4253 8877 

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

MRC
451 
WWUS53 KMKX 301740
SVSMKX

Severe Weather Statement
National Weather Service Milwaukee/Sullivan WI
1240 PM CDT Sun Jun 30 2019

WIC133-301748-
/O.CAN.KMKX.SV.W.0026.000000T0000Z-190630T1815Z/
Waukesha WI-
1240 PM CDT Sun Jun 30 2019

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN WAUKESHA 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 600 PM CDT for
south central and southeastern Wisconsin.

LAT...LON 4250 8893 4285 8902 4284 8804 4249 8786
TIME...MOT...LOC 1738Z 327DEG 29KT 4282 8805 4246 8848 

$$

WIC059-101-105-127-301815-
/O.CON.KMKX.SV.W.0026.000000T0000Z-190630T1815Z/
Walworth WI-Rock WI-Racine WI-Kenosha WI-
1240 PM CDT Sun Jun 30 2019

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 115 PM CDT
FOR WALWORTH...EASTERN ROCK...RACINE AND KENOSHA COUNTIES...

At 1238 PM CDT, severe thunderstorms were located along a line
extending from near Wind Lake to near Hebron, moving southeast at 35
mph.

HAZARD...60 mph wind gusts.

SOURCE...Law enforcement. There have been numerous reports of tree 
         damage and power outages.

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

Locations impacted include...
Kenosha, Janesville, Pleasant Prairie, Whitewater, Elkhorn, Delavan,
Lake Geneva, Twin Lakes, Milton, Union Grove, East Troy, Paddock
Lake, Williams Bay, Camp Lake, Wind Lake, Rochester, Genoa City,
Walworth, Silver Lake and Clinton.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

If on or near Lake Geneva, get away from the water and move indoors 
or inside a vehicle. remember, lightning can strike out to 15 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 4250 8893 4285 8902 4284 8804 4249 8786
TIME...MOT...LOC 1738Z 327DEG 29KT 4282 8805 4246 8848 

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

MRC
934 
WWUS53 KMKX 301751
SVSMKX

Severe Weather Statement
National Weather Service Milwaukee/Sullivan WI
1251 PM CDT Sun Jun 30 2019

WIC059-101-105-127-301815-
/O.CON.KMKX.SV.W.0026.000000T0000Z-190630T1815Z/
Walworth WI-Rock WI-Racine WI-Kenosha WI-
1251 PM CDT Sun Jun 30 2019

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 115 PM CDT
FOR WALWORTH...SOUTHEASTERN ROCK...WESTERN RACINE AND KENOSHA
COUNTIES...

At 1248 PM CDT, severe thunderstorms were located along a line
extending from near Union Grove to near Greenwood, moving southeast
at 35 mph.

HAZARD...60 mph wind gusts.

SOURCE...Law enforcement. There were numerous reports of tree damage 
         with these storms when then tracked through Jefferson and 
         Waukesha Counties.

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

Public reported large tree limbs down near Pell Lake at 12:40 pm.

Locations impacted include...
Kenosha, Janesville, Pleasant Prairie, Elkhorn, Delavan, Lake Geneva,
Twin Lakes, Union Grove, East Troy, Paddock Lake, Williams Bay, Camp
Lake, Wind Lake, Rochester, Genoa City, Walworth, Silver Lake,
Clinton, Fontana-On-Geneva Lake and Sharon.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

If on or near Lake Geneva, get away from the water and move indoors 
or inside a vehicle. remember, lightning can strike out to 15 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 4270 8898 4284 8804 4249 8786 4250 8893
TIME...MOT...LOC 1748Z 336DEG 31KT 4275 8801 4239 8844 

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

MRC
544 
WWUS53 KMKX 301811
SVSMKX

Severe Weather Statement
National Weather Service Milwaukee/Sullivan WI
111 PM CDT Sun Jun 30 2019

WIC059-101-105-127-301820-
/O.EXP.KMKX.SV.W.0026.000000T0000Z-190630T1815Z/
Walworth WI-Rock WI-Racine WI-Kenosha WI-
111 PM CDT Sun Jun 30 2019

...THE SEVERE THUNDERSTORM WARNING FOR WALWORTH...SOUTHEASTERN
ROCK...WESTERN RACINE AND KENOSHA COUNTIES WILL EXPIRE AT 115 PM
CDT...
            
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning will be allowed to expire.  

A Severe Thunderstorm Watch remains in effect until 600 PM CDT for
south central and southeastern Wisconsin.

LAT...LON 4270 8898 4284 8804 4249 8786 4250 8893
TIME...MOT...LOC 1810Z 336DEG 31KT 4258 8791 4222 8834 

$$

WOOD

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Milwaukee, WI wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 30, 6:54 AM CDT, 5 hours 5 minutes earlier.

Area forecast discussion, Jun 30, 6:54 AM CDT, 5 hours 5 minutes before
Area Forecast Discussion...UPDATED
National Weather Service Milwaukee/Sullivan WI
654 AM CDT Sun Jun 30 2019

.UPDATE...

Have bumped precip chances up a bit and also moved the timing an
hour or so earlier based on latest radar trends. Radar
reflectivities have weakened a little across the western half of
the line of storms, though the cloud tops are showing no signs of
warming. Also lowered temps a bit for the first part of the day,
with clouds already moving in along with the expected rain later.
If this moves through fast enough, could see a window of time for
temps to recover mid to late afternoon.

&&

.AVIATION(12Z TAFS)...

VFR conditions are expected into the mid-morning hours. It still
looks like thunderstorms will move through southern Wisconsin
today. Latest timing suggests storms will arrive in the north by
16Z, working through the area through mid-afternoon. There is
still some uncertainty with how well this line of storms will
survive and if the timing will stay on track. When the storms do
eventually arrive, there is a chance that some of them may be
severe, with damaging winds the primary threat.

More storms will be possible tonight, though confidence in timing
is on the low side for now. Lower visibilites and possibly
ceilings will be possible with any thunderstorms over the next 24
hours.

&&

.PREV DISCUSSION... (Issued 301 AM CDT Sun Jun 30 2019)

SHORT TERM...

Today and tonight...Forecast confidence is medium:

A complex of thunderstorms continues to push southeastward across
northern Minnesota early this morning. These storms have formed
within a fairly tight instability gradient. The gradient along
with storm motion and propagation vectors suggest this complex
will continue to head southeastward through the morning. Mesoscale
models present a couple different solutions. One group of
solutions wipes out the current storms later this morning and
fires more storms late afternoon along the leftover boundary,
which would keep southern Wisconsin dry until evening. Another
group of solutions keeps the current storms rolling right into the
forecast area. Given no obvious reason for the current complex to
die, leaned the forecast toward the latter solution. Tracking the
upstream storms' current motion would bring them to the northern
forecast area by around noon, with storms clearing the south
between 3 and 4. The storms will have a chance to be severe, with
strong winds being the primary threat.

The other big issue today is temperatures. Sided temperatures
toward the earlier arrival of storms. Any variation in this though
will impact temps quite a bit. Temps aloft will be quite toasty
today, so a slower arrival of clouds/precip will allow temps to
easily pass forecast highs. Mid 90s wouldn't be out of the
question in the southwest with heat indices over 100 given plenty
of sunshine into mid- afternoon. If the storms arrive quicker and
cloud debris hangs through the afternoon, the forecast highs are
probably too warm.

More storms will be possible tonight given this airmass hanging
around and waves occasionally passing through. Not a lot of model
agreement with timing though, so kept precip chances in the 30 to
50 percent range most of the night. It should be mild again
tonight given the airmass and plenty of clouds expected.

LONG TERM...

Monday and Monday Night...Forecast Confidence Low to Moderate.

Thunderstorms will likely be ongoing along the frontal boundary
Monday morning, which should either be across the northern portion
of the forecast area, or just north of. Its position will be
dependent on how things play out today and tonight, so lots of
uncertainty here. Overall, the boundary should shift north with
time on Monday, as the upper ridge strengthens a bit over the
lower Missouri Valley. Very warm temperatures will continue, with
highs in the upper 80s to around 90.

Tuesday and Wednesday...Forecast Confidence Low.

The surface front will continue to wiggle around the central part
of the state on Tuesday, with percolating shower and thunderstorm
activity within its vicinity. A weak shortwave coming out of the
Rockies will try to undercut the northern periphery of the ridge
on Tuesday, which may result in a slight uptick in storm coverage
by afternoon. Plenty of instability but marginal shear will
continue to result in a disorganized, conditional severe threat
with any activity.

Forecast confidence is especially low for Wednesday, as much will
depend on the aforementioned shortwave and the evolution of
thunderstorms on Tuesday. The chance for thunderstorms will
continue, though potential will be ultimately be focused wherever
the effective front lies.

Thursday through next Sunday...Forecast Confidence Low to
Moderate.

Warm and humid conditions will persist through the remainder of
the workweek into the at least the first part of the weekend, as
the upper level flow becomes a bit more zonal. The warm and humid
airmass will provide sufficient instability for at least scattered
thunderstorms, likely with a diurnal peak in late afternoon and
early evening.

A stronger wave is still progged to push through the northern
Great Lakes over the weekend. If this eventually takes place, it
would likely push a frontal boundary through the area, bringing
with it a cooler and less humid airmass.

AVIATION(09Z TAFS)...

Could see some patchy fog develop overnight through early morning,
but otherwise VFR conditions are expected through the morning
hours. Keeping an eye on the storms over northern Minnesota, as
this activity is expected to eventually reach southern Wisconsin.
Latest timing suggests storms will arrive in the north by around
noon, working through the area through mid- afternoon. Will adjust
the timing as needed as the arrival details of the storms become
more clear over the next few hours. Some models still wipe this
activity out then develop more later today, so confidence isn't
particularly high yet. When the storms do eventually arrive, there
is a chance that some of them may be severe, with damaging winds
the primary threat.

More storms will be possible tonight, though confidence in timing
is on the low side for now. Lower visibilites and possibly
ceilings will be possible with any thunderstorms over the next 24
hours.

MARINE...

Winds and waves will be on the low end through much of the
upcoming week. There will be a chance for thunderstorms most days.
Some of the storms may be severe over the next couple days. There
could be come fog over the lake at times through the next few days
given the warm and humid airmass.

&&

.MKX WATCHES/WARNINGS/ADVISORIES...
WI...None.
LM...None.
&&

Update...DDV
Today/Tonight and Aviation/Marine...DDV
Monday THROUGH Saturday...Boxell
Hazardous weather outlook, Jun 30, 6:02 AM CDT, 5 hours 57 minutes before
Hazardous Weather Outlook
National Weather Service Milwaukee/Sullivan WI
602 AM CDT Sun Jun 30 2019

WIZ046-047-051-052-056>060-062>072-011115-
Marquette-Green Lake-Fond Du Lac-Sheboygan-Sauk-Columbia-Dodge-
Washington-Ozaukee-Iowa-Dane-Jefferson-Waukesha-Milwaukee-
Lafayette-Green-Rock-Walworth-Racine-Kenosha-
602 AM CDT Sun Jun 30 2019

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

.DAY ONE...Today and Tonight

A complex of thunderstorms is expected to approach the area from
the northwest starting during the mid to late morning hours.
Severe weather is possible with these storms, with wind gusts in
excess of 60 MPH as the primary risk.

Additional thunderstorms will be possible later this evening and
tonight. A few strong storms will be possible with this activity
as well.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

Thunderstorm chances will continue on a near daily basis
through the coming week.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed later today.

LMZ643>646-011115-
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-
602 AM CDT Sun Jun 30 2019

This Hazardous Weather Outlook is for the nearshore waters from
Sheboygan Wisconsin to Winthrop Harbor Illinois.

.DAY ONE...Today and Tonight

Thunderstorms will approach the lake later today, most likely from
late morning into early afternoon. Wind gusts in excess of 60 MPH
will be possible with this activity.

Additional thunderstorms will be possible later this evening into
tonight.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

Thunderstorm chances will continue on a near daily basis
through the coming week.

LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-868-
870-872-874-876-878-011115-
Lake Michigan Michigan City IN to St. Joseph MI 5 NM offshore to
mid-line of lake.-
Lake Michigan from Seul Choix Point to Rock Island Passage 5NM
offshore to Mid Lake-
Lake Michigan South of a line from Seul Choix Point to the
Mackinac Bridge and North of a line from Charlevoix MI to South
Fox Island 5NM offshore-
Lake Michigan from Charlevoix to Point Betsie MI 5NM Offshore to
mid lake-
Lake Michigan from Point Betsie to Manistee MI 5NM offshore to
Mid Lake-
Lake Michigan from Rock Island Passage to Sturgeon Bay WI 5NM
offshore to mid lake-
Lake Michigan from Sturgeon Bay to Two Rivers WI 5NM offshore to
Mid Lake-
Lake Michigan from Two Rivers to Sheboygan WI 5NM offshore to Mid
Lake-
Lake Michigan from Sheboygan to Port Washington WI 5NM offshore
to Mid Lake-
Lake Michigan from Port Washington to North Point Light WI 5NM
offshore to Mid Lake-
Lake Michigan from North Point Light to Wind Point WI 5NM
offshore to Mid Lake-
Lake Michigan from Wind Point WI to Winthrop Harbor IL 5NM
offshore to Mid Lake-
Lake Michigan from Winthrop Harbor to Wilmette Harbor IL 5NM
offshore to Mid Lake-
Lake Michigan from Wilmette Harbor to Michigan City in 5NM
offshore to Mid Lake-
Lake Michigan from Pentwater to Manistee MI 5NM offshore to Mid
Lake-
Lake Michigan from Whitehall to Pentwater MI 5NM offshore to Mid
Lake-
Lake Michigan from Grand Haven to Whitehall MI 5NM offshore to
Mid Lake-
Lake Michigan from Holland to Grand Haven MI 5NM offshore to Mid
Lake-
Lake Michigan from South Haven to Holland MI 5NM offshore to Mid
lake-
Lake Michigan from St Joseph to South Haven MI 5NM offshore to
Mid Lake-
602 AM CDT Sun Jun 30 2019

This Hazardous Weather Outlook is for the open waters of Lake
Michigan.

.DAY ONE...Today and Tonight

An area of thunderstorms will approach Lake Michigan from the
northwest later today, mainly impacting the southern half of the
lake. Wind gusts in excess of 60 MPH will be possible with this
activity.

Additional thunderstorms will be possible later this evening and
tonight.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

Thunderstorm chances will continue on a near daily basis
through the coming week.

Patchy fog will be possible at times as a humid airmass remains
across the cooler water. This risk will be greatest across the
northern half of the lake.

www.weather.gov/mkx

In the hours before

Special weather statement, Jun 30, 11:47 AM CDT, 12 minutes before
Special Weather Statement
National Weather Service Milwaukee/Sullivan WI
1147 AM CDT Sun Jun 30 2019

WIZ062-063-067>070-301800-
Green-Walworth-Lafayette-Iowa-Rock-Dane-
1147 AM CDT Sun Jun 30 2019

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT LAFAYETTE...GREEN...
WALWORTH...SOUTHERN IOWA...ROCK AND SOUTHERN DANE COUNTIES...

At 1147 AM CDT, radar indicated strong thunderstorms were located
along a line extending from North Prairie to 6 miles northwest of
Platteville. Movement was south at 25 mph.

Winds in excess of 40 mph are possible with these storms.

Locations impacted include...
Janesville, Beloit, Whitewater, Monroe, Elkhorn, Delavan, Lake
Geneva, Milton, Edgerton, Evansville, East Troy, Brodhead, Williams
Bay, Mineral Point, Darlington, Genoa City, Walworth, Belleville, New
Glarus and Clinton.

Torrential rainfall is also occurring with these storms, and may
cause 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.

If you are on or near lakes, 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 4251 9042 4288 9043 4289 8901 4285 8901
      4284 8835 4271 8831 4250 8831
TIME...MOT...LOC 1647Z 341DEG 20KT 4295 8837 4282 9054

MRC
Local storm report, Jun 30, 11:48 AM CDT, 11 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
1148 AM CDT SUN JUN 30 2019

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

1140 AM     TSTM WND GST     1 SSW WATERTOWN         43.18N 88.73W
06/30/2019  M58 MPH          JEFFERSON          WI   COCORAHS

&&

AK
Special weather statement, Jun 30, 11:51 AM CDT, 8 minutes before
Special Weather Statement
National Weather Service Milwaukee/Sullivan WI
1151 AM CDT Sun Jun 30 2019

WIZ051-052-058>060-065-066-071-072-301800-
Dodge-Waukesha-Sheboygan-Milwaukee-Racine-Ozaukee-Washington-Fond Du
Lac-Kenosha-
1151 AM CDT Sun Jun 30 2019

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT OZAUKEE...EASTERN FOND
DU LAC...MILWAUKEE...RACINE...WAUKESHA...WASHINGTON...SHEBOYGAN AND
KENOSHA COUNTIES...

At 1150 AM CDT, radar indicated strong thunderstorms were located
along a line extending from near St Anna to near Palmyra. Movement
was southeast at 30 mph.

Wind gusts up to 50 mph and pea size hail are possible with these
storms.

Locations impacted include...
Milwaukee, Kenosha, Racine, Waukesha, West Allis, Sheboygan,
Wauwatosa, Fond Du Lac, New Berlin, Brookfield, Greenfield, Menomonee
Falls, Oak Creek, West Bend, Mount Pleasant, Muskego, Mequon, South
Milwaukee, Pleasant Prairie and Cudahy.

Torrential rainfall is also occurring with these storms, and may
cause 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.

If you are on or near lakes, 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 4284 8831 4284 8848 4394 8836 4394 8817
      4389 8816 4389 8774 4368 8770 4357 8779
      4349 8779 4338 8787 4326 8791 4312 8790
      4307 8787 4302 8790 4296 8785 4285 8783
      4278 8775 4261 8782 4249 8780 4249 8830
TIME...MOT...LOC 1650Z 301DEG 27KT 4396 8812 4284 8864

MRC
Local storm report, Jun 30, 11:56 AM CDT, 3 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
1156 AM CDT SUN JUN 30 2019

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

1130 AM     TSTM WND DMG     JUNEAU                  43.41N 88.71W
06/30/2019                   DODGE              WI   LAW ENFORCEMENT

            HWY 26 LARGE TREE DOWN BLOCKING ROAD.

&&

AK
Local storm report, Jun 30, 11:57 AM CDT, 2 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
1157 AM CDT SUN JUN 30 2019

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

1135 AM     TSTM WND DMG     HORICON                 43.45N 88.64W
06/30/2019                   DODGE              WI   LAW ENFORCEMENT

            TREES DOWN ACROSS THE AREA.

&&

AK
Local storm report, Jun 30, 11:58 AM CDT, 1 minute before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
1158 AM CDT SUN JUN 30 2019

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

1140 AM     TSTM WND GST     1 SSW WATERTOWN         43.18N 88.73W
06/30/2019  E58 MPH          JEFFERSON          WI   COCORAHS

            CORRECTS PREVIOUS TSTM WND GST REPORT FROM 1
            SSW WATERTOWN.

&&

AK

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 30, 9:39 AM CDTSpecial Weather StatementMKXColumbia, Green Lake, Marquette, Sauk51 min
Jun 30, 10:12 AM CDTSevere Thunderstorm WarningMKXColumbia, Green Lake, Marquette, Sauk63 min
Jun 30, 10:48 AM CDTSevere Thunderstorm WarningMKXColumbia, Dane, Dodge57 min
Jun 30, 10:58 AM CDTSpecial Weather StatementMKXFond du Lac47 min
Jun 30, 11:16 AM CDTSpecial Weather StatementMKXIowa29 min
Jun 30, 11:26 AM CDTSevere Thunderstorm WarningMKXDodge, Jefferson, Waukesha49 min
Jun 30, 11:31 AM CDTSpecial Marine WarningMKX119 min
Jun 30, 11:42 AM CDTSpecial Weather StatementMKXDodge33 min
Jun 30, 11:47 AM CDTSpecial Weather StatementMKXGreen, Lafayette, Rock, Walworth73 min
Jun 30, 11:51 AM CDTSpecial Weather StatementMKXKenosha, Milwaukee, Ozaukee, Racine, Sheboygan, Washington and 1 more69 min
Jun 30, 5:18 PM CDTSpecial Weather StatementMKXIowa, Lafayette57 min
Jun 30, 5:27 PM CDTSevere Thunderstorm WarningMKXLafayette48 min
Jun 30, 6:10 PM CDTSpecial Weather StatementMKXGreen, Lafayette50 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2019Every severe thunderstorm warning in 2019

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.