Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 20, NWS Milwaukee, WI

June 27, 2019Ozaukee County, Sheboygan County, Washington County, Wisconsin

NWS Milwaukee, WI issued this severe thunderstorm warning at Jun 27, 2019, 4:29 PM CDT for Ozaukee County, Sheboygan County, Washington County, Wisconsin. It was in force for 76 min. 4 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 27, 2019, 4:29 PM CDT (21:29 UTC)
Expired: Jun 27, 2019, 5:45 PM CDT
In force: 76 min
Issued by: NWS Milwaukee, WI
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Ozaukee County, WI, Sheboygan County, WI, Washington County, WI

The radar

The Milwaukee radar (KMKX), 81 km from the middle of the area, began a volume at 21:32 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

Time	Report	Where	Remark
Jun 27, 4:50 PM CDT	TSTM WND DMG	1 Ese Hartford, WI	TREES AND POWERLINES DOWN. ROOF CAVED IN DUE TO TREE FALLING.
Jun 27, 4:50 PM CDT	TSTM WND DMG	1 Se Hartford, WI	LARGE TREE DOWN.
Jun 27, 5:00 PM CDT	TSTM WND GST 60	2 E Slinger, WI
Jun 27, 5:20 PM CDT	TSTM WND GST 58	1 Se Mequon, WI	MULTIPLE TREE BRANCHES 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 4 storm reports to this severe thunderstorm warning; the first came 21 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.

Issued	Product	Office	Lasted
Jun 27, 3:40 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 9.5 hours before the alert went out and 105 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1844 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 41 m²/s²
0-3 km storm-relative helicity: 98 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

943 
WUUS53 KMKX 272129
SVRMKX
WIC089-117-131-272245-
/O.NEW.KMKX.SV.W.0020.190627T2129Z-190627T2245Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Milwaukee/Sullivan WI
429 PM CDT Thu Jun 27 2019

The National Weather Service in Milwaukee/Sullivan has issued a

* Severe Thunderstorm Warning for...
  Ozaukee County in southeastern Wisconsin...
  Washington County in southeastern Wisconsin...
  Sheboygan County in east central Wisconsin...

* Until 545 PM CDT.

* At 429 PM CDT, severe thunderstorms were located along a line
  extending from 6 miles southwest of Oshkosh to Watertown, moving
  east at 55 mph.

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

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Sheboygan, Menomonee Falls, West Bend, Mequon, Hartford, Brown
  Deer, Grafton, Cedarburg, Port Washington, Plymouth, Sheboygan
  Falls, Jackson, Slinger, Saukville, Bayside, Kewaskum, Thiensville,
  Howards Grove, Oostburg and Belgium.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4368 8770 4357 8777 4345 8779 4336 8786
      4326 8789 4318 8788 4319 8841 4354 8840
      4354 8816 4389 8816 4389 8772 4379 8769
TIME...MOT...LOC 2129Z 283DEG 47KT 4397 8868 4318 8870 

HAIL...0.75IN
WIND...60MPH
 
$$

GEHRING

3 follow-up statements

736 
WWUS53 KMKX 272158
SVSMKX

Severe Weather Statement
National Weather Service Milwaukee/Sullivan WI
458 PM CDT Thu Jun 27 2019

WIC089-117-131-272245-
/O.CON.KMKX.SV.W.0020.000000T0000Z-190627T2245Z/
Ozaukee WI-Washington WI-Sheboygan WI-
458 PM CDT Thu Jun 27 2019

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM CDT
FOR OZAUKEE...WASHINGTON AND SHEBOYGAN COUNTIES...

At 457 PM CDT, severe thunderstorms were located along a line
extending from 6 miles southwest of Chilton to Merton, moving east at
45 mph.

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

SOURCE...Radar indicated.

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

Locations impacted include...
Sheboygan, Menomonee Falls, West Bend, Mequon, Hartford, Brown Deer,
Grafton, Cedarburg, Port Washington, Plymouth, Sheboygan Falls,
Jackson, Slinger, Saukville, Bayside, Kewaskum, Thiensville, Howards
Grove, Oostburg and Belgium.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4368 8770 4357 8777 4345 8779 4336 8786
      4326 8789 4318 8788 4319 8841 4354 8840
      4354 8816 4389 8816 4389 8772 4379 8769
TIME...MOT...LOC 2157Z 275DEG 41KT 4396 8824 4315 8834 

HAIL...0.75IN
WIND...60MPH
 
$$

GEHRING

168 
WWUS53 KMKX 272214
SVSMKX

Severe Weather Statement
National Weather Service Milwaukee/Sullivan WI
514 PM CDT Thu Jun 27 2019

WIC089-117-131-272245-
/O.CON.KMKX.SV.W.0020.000000T0000Z-190627T2245Z/
Ozaukee WI-Washington WI-Sheboygan WI-
514 PM CDT Thu Jun 27 2019

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM CDT
FOR OZAUKEE...WASHINGTON AND SHEBOYGAN COUNTIES...

At 513 PM CDT, severe thunderstorms were located along a line
extending from near St. Nazianz to Menomonee Falls, moving east at 50
mph.

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

SOURCE...Radar indicated.

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

Locations impacted include...
Sheboygan, Menomonee Falls, West Bend, Mequon, Hartford, Brown Deer,
Grafton, Cedarburg, Port Washington, Plymouth, Sheboygan Falls,
Jackson, Slinger, Saukville, Bayside, Kewaskum, Thiensville, Howards
Grove, Oostburg and Belgium.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4368 8770 4357 8777 4345 8779 4336 8786
      4326 8789 4318 8788 4319 8841 4354 8840
      4354 8816 4389 8816 4389 8772 4379 8769
TIME...MOT...LOC 2213Z 276DEG 43KT 4397 8802 4316 8810 

HAIL...0.75IN
WIND...60MPH
 
$$

GEHRING

545 
WWUS53 KMKX 272242
SVSMKX

Severe Weather Statement
National Weather Service Milwaukee/Sullivan WI
542 PM CDT Thu Jun 27 2019

WIC089-117-131-272251-
/O.EXP.KMKX.SV.W.0020.000000T0000Z-190627T2245Z/
Ozaukee WI-Washington WI-Sheboygan WI-
542 PM CDT Thu Jun 27 2019

...THE SEVERE THUNDERSTORM WARNING FOR OZAUKEE...WASHINGTON AND
SHEBOYGAN COUNTIES WILL EXPIRE AT 545 PM CDT...
    
The strongest winds with the line of storms has moved out over Lake 
Michigan. Therefore, the warning will be allowed to expire.  However 
gusty winds of 30 mph to 40 mph are still expected through 6 PM over 
Sheboygan and Ozaukee Counties. 

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

LAT...LON 4368 8770 4357 8777 4345 8779 4336 8786
      4326 8789 4318 8788 4319 8841 4354 8840
      4354 8816 4389 8816 4389 8772 4379 8769
TIME...MOT...LOC 2241Z 280DEG 42KT 4392 8762 4311 8771 

$$

GEHRING

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 27, 4:06 PM CDT, 23 minutes earlier.

Area forecast discussion, Jun 27, 4:06 PM CDT, 23 minutes before

Area Forecast Discussion...UPDATED
National Weather Service Milwaukee/Sullivan WI
406 PM CDT Thu Jun 27 2019

.UPDATE...

The line of storms is holding together and is expected to roll
eastward all the way to the lake this evening. Therefore, the
Severe Thunderstorm Watch was expanded to include southeast WI and
portions of the Open Lake Michigan.

There is plenty of instability to sustain these storms but there
is not much shear. Thus, thunderstorms have isolated gusts rather
than an organized, bowing line segment. Many storms have gusts in
the 40 to 50 mph range with a few exceeding severe criteria
greater than 57 mph.

&&

.PREV DISCUSSION... (Issued 220 PM CDT Thu Jun 27 2019)

SHORT TERM...
This afternoon and Tonight.

The MCS near the MS River is expected to continue ewd around
35-40 kts as it encounters MLCAPE values of 2000-3000 J/KG and
lowering MLCIN values. Damaging straight-line winds are the main
concern. The gust front is currently out ahead of the line which
may limit the SVR wind potential unless it becomes more balanced.
Afterward, the larger scale LLJ will focus from IA into nrn WI
where a couple MCVs will track ewd. The LLJ will gradually veer
through the night and layover into srn WI for the early Fri AM
hours. Scattered tstorms are expected this evening at times in the
wake of the MCS but another MCS is then expected to move sewd
into srn WI for the early Fri AM hours. Some heavy rain concerns
since some locations could have multiple rounds of tstorms but
overall the flash flood risk remains low.

Friday.
The outflow boundary/stationary front may trigger isold to sct
tstorm development for Fri afternoon. No upper dynamics are
present and wind shear is weak, but pulse SVR storms will be
possible due to moderate to large CAPE and weak CIN.

LONG TERM...

Friday Night through Sunday...Forecast confidence high.

The frontal boundary will likely sag south to around the WI/IL state
Friday night as mid level ridging builds in the plains and nudges
into Wisconsin. Thunderstorm chances will continue into the evening
due to weak shortwave activity moving over this frontal boundary.
Most models, with the exception of the NAM which brings in cooler
temps, show plenty of instability through the evening.

The mid level ridge will push more into the region on Saturday and
southwest flow at the surface will bring warmer temps into the
region. Many areas, especially in the west could hit 90 degrees.
There isn't much in the way of forcing for Saturday so it will
probably be dry. However the weak cap does erode somewhat later in
the day with 2000 plus of cape so can't rule out a thunderstorm if
the cap weakens.

The ridge remains in place on Sunday then starts to break down
Sunday night or Monday as shortwave activity moves through. Sunday
has a good chance of being dry then precip chances increase during
the evening and overnight with the short wave activity.

Monday through Thursday...Forecast confidence medium.

Zonal flow will dominate with shortwave activity moving through. A
weak frontal boundary will be wavering across the region
providing the focus for on and off thunderstorm chances during
this period. Somewhat milder temperatures are expected, with highs
in the lower to middle 80s. The humidity will likely continue
with dew points in the upper 60s during the day.

AVIATION(18Z TAFS)...
Most Vsby and Cig restrictions will occur in and around
thunderstorms for this afternoon, tonight, and Friday. Thus the
prevailing conditions will mostly be VFR although clouds will be
present much of the time.

MARINE...
The main hazard for Lake MI will be thunderstorms with
gusty winds for late this afternoon into Fri. The other hazard
concern is dense fog as a humid airmass moves over the cold waters
of Lake MI. Light to modest winds are expected for today and
through the weekend.

&&

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

Update...Cronce
Tonight/Friday and Aviation/Marine...Gehring
Friday Night through Thursday...Marquardt

Hazardous weather outlook, Jun 27, 3:17 PM CDT, 1 hour 12 minutes before

Hazardous Weather Outlook
National Weather Service Milwaukee/Sullivan WI
317 PM CDT Thu Jun 27 2019

WIZ046-047-051-052-056>060-062>072-282030-
Marquette-Green Lake-Fond Du Lac-Sheboygan-Sauk-Columbia-Dodge-
Washington-Ozaukee-Iowa-Dane-Jefferson-Waukesha-Milwaukee-
Lafayette-Green-Rock-Walworth-Racine-Kenosha-
317 PM CDT Thu Jun 27 2019

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

.DAY ONE...Tonight

Thunderstorms are expected this afternoon and evening. Another
round is possible overnight. Some strong to severe storms are
likely during this time. Damaging winds, large hail, and heavy
rainfall are the main hazards. A Severe Thunderstorm Watch is in
effect.

.DAYS TWO THROUGH SEVEN...Friday through Thursday

Thunderstorms are possible each day from Friday through the
weekend and into early next week.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will be needed this afternoon and evening.

LMZ643>646-282030-
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-
317 PM CDT Thu Jun 27 2019

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

.DAY ONE...Tonight

Thunderstorms are expected early this evening. Some strong to
severe storms are possible during this time. Damaging winds, large
hail, and heavy rainfall are the main hazards.

There will also be chances for dense fog tonight.

.DAYS TWO THROUGH SEVEN...Friday through Thursday

Thunderstorms are possible each day from Friday through the
weekend and into early next week.

LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-868-
870-872-874-876-878-282030-
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-
317 PM CDT Thu Jun 27 2019

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

.DAY ONE...Tonight

Thunderstorms are expected this evening. Some strong to severe
storms are possible during this time. Damaging winds, large hail,
and very heavy rainfall are the main hazards.

There will also be chances for dense fog tonight.

.DAYS TWO THROUGH SEVEN...Friday through Thursday

Thunderstorms are possible each day from Friday through the
weekend and into early next week.

MRC

www.weather.gov/mkx

In the hours before

Local storm report, Jun 27, 4:05 PM CDT, 24 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
405 PM CDT THU JUN 27 2019

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

0404 PM     TSTM WND GST     MARQUETTE               43.75N 89.14W
06/27/2019  E55 MPH          GREEN LAKE         WI   FIRE DEPT/RESCUE

&&

Local storm report, Jun 27, 4:13 PM CDT, 16 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
413 PM CDT THU JUN 27 2019

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

0405 PM     TSTM WND DMG     6 E NESHKORO            43.98N 89.10W
06/27/2019                   GREEN LAKE         WI   EMERGENCY MNGR

            TREES DOWN.

&&

AK

Local storm report, Jun 27, 4:14 PM CDT, 15 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
414 PM CDT THU JUN 27 2019

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

0405 PM     TSTM WND DMG     2 ENE PRINCETON         43.87N 89.09W
06/27/2019                   GREEN LAKE         WI   EMERGENCY MNGR

            TREES DOWN.

&&

AK

Local storm report, Jun 27, 4:15 PM CDT, 14 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
415 PM CDT THU JUN 27 2019

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

0405 PM     TSTM WND GST     MARQUETTE               43.75N 89.14W
06/27/2019  M59 MPH          GREEN LAKE         WI   EMERGENCY MNGR

&&

AK

Local storm report, Jun 27, 4:21 PM CDT, 8 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
421 PM CDT THU JUN 27 2019

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

0350 PM     TSTM WND DMG     1 NNW MONONA            43.06N 89.34W
06/27/2019                   DANE               WI   PUBLIC

            POWERLINE DOWN.

&&

AK

Local storm report, Jun 27, 4:23 PM CDT, 6 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
423 PM CDT THU JUN 27 2019

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

0355 PM     TSTM WND GST     1 E SUN PRAIRIE         43.19N 89.21W
06/27/2019  E60 MPH          DANE               WI   PUBLIC

&&

AK

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 27, 2:36 PM CDT	Special Weather Statement	MKX	Iowa, Lafayette, Sauk	24 min
Jun 27, 3:07 PM CDT	Severe Thunderstorm Warning	MKX	Iowa, Sauk	53 min
Jun 27, 3:26 PM CDT	Special Weather Statement	MKX	Columbia, Dane, Green, Green Lake, Lafayette, Marquette	64 min
Jun 27, 3:31 PM CDT	Severe Thunderstorm Warning	MKX	Marquette	46 min
Jun 27, 3:36 PM CDT	Severe Thunderstorm Warning	MKX	Columbia, Dane	54 min
Jun 27, 3:47 PM CDT	Severe Thunderstorm Warning	MKX	Green, Lafayette	58 min
Jun 27, 3:49 PM CDT	Severe Thunderstorm Warning	MKX	Green Lake	41 min
Jun 27, 4:08 PM CDT	Severe Thunderstorm Warning	MKX	Dodge, Jefferson, Rock, Walworth, Waukesha	52 min
Jun 27, 4:13 PM CDT	Severe Thunderstorm Warning	MKX	Fond du Lac	62 min
Jun 27, 4:34 PM CDT	Special Marine Warning	MKX		116 min
Jun 27, 4:41 PM CDT	Severe Thunderstorm Warning	MKX	Milwaukee, Waukesha	79 min
Jun 27, 4:50 PM CDT	Special Marine Warning	MKX		115 min
Jun 27, 4:52 PM CDT	Special Weather Statement	MKX	Kenosha, Racine, Walworth	53 min
Jun 27, 5:04 PM CDT	Severe Thunderstorm Warning	MKX	Kenosha, Racine, Rock, Walworth	71 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2019 Every 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.