Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 23, NWS Milwaukee, WI

May 12, 20146 counties in Wisconsin

NWS Milwaukee, WI issued this severe thunderstorm warning at May 12, 2014, 11:02 AM CDT for 6 counties in Wisconsin. It was in force for 73 min. 6 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: May 12, 2014, 11:02 AM CDT (16:02 UTC)
Expired: May 12, 2014, 12:15 PM CDT
In force: 73 min
Issued by: NWS Milwaukee, WI
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Dodge County, WI, Fond du Lac County, WI, Jefferson County, WI, Sheboygan County, WI, Washington County, WI, Waukesha County, WI

The radar

The Milwaukee radar (KMKX), 54 km from the middle of the area, began a volume at 16:04 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
May 12, 11:28 AM CDT	HAIL 0.75	Lomira, WI	REPORTED BY VILLAGE OF LOMIRA POLICE.
May 12, 11:32 AM CDT	TSTM WND GST 50	1 Sw Hartford, WI	HIGH SCHOOL OUTSIDE GYM MAT ELEVATED AND BLOWN BY STRONG WINDS.
May 12, 11:34 AM CDT	HAIL 0.25	Watertown, WI
May 12, 11:37 AM CDT	HAIL 1	2 N Hustisford, WI
May 12, 12:09 PM CDT	TSTM WND DMG	Watertown, WI	WIND ESTIMATED AT 60 MPH...TREES AND POWERLINES DOWN THROUGHOUT THE CITY.
May 12, 12:20 PM CDT	HAIL 0.25	Menomonee Falls, WI

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 2 storm reports to this severe thunderstorm warning; the first came 35 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
May 12, 10:02 AM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 4.0 hours before the alert went out and 123 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: 797 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 117 m²/s²
0-3 km storm-relative helicity: 277 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

130 
WUUS53 KMKX 121602
SVRMKX
WIC027-039-055-117-131-133-121715-
/O.NEW.KMKX.SV.W.0023.140512T1602Z-140512T1715Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
1102 AM CDT MON MAY 12 2014

THE NATIONAL WEATHER SERVICE IN MILWAUKEE/SULLIVAN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  JEFFERSON COUNTY IN SOUTHEAST WISCONSIN...
  SOUTHWESTERN SHEBOYGAN COUNTY IN EAST CENTRAL WISCONSIN...
  WASHINGTON COUNTY IN SOUTHEAST WISCONSIN...
  EASTERN DODGE COUNTY IN SOUTHEAST WISCONSIN...
  WAUKESHA COUNTY IN SOUTHEAST WISCONSIN...
  SOUTHEASTERN FOND DU LAC COUNTY IN EAST CENTRAL WISCONSIN...

* UNTIL 1215 PM CDT

* AT 1101 AM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
  EXTENDING FROM NEAR WAUPUN TO NEAR EDGERTON...MOVING EAST AT 40
  MPH.

  HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL. 

  SOURCE...RADAR INDICATED. 

  IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE 
           TO ROOFS...SIDING AND TREES. 

* LOCATIONS IMPACTED INCLUDE...
  WAUKESHA...WEST ALLIS...WAUWATOSA...NEW BERLIN...BROOKFIELD...
  GREENFIELD...MENOMONEE FALLS...WEST BEND...MUSKEGO...WATERTOWN...
  WHITEWATER...HARTFORD...PEWAUKEE...FORT ATKINSON...SUSSEX...
  HARTLAND...JEFFERSON...HALES CORNERS...MUKWONAGO AND DELAFIELD.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 4354 8802 4354 8804 4337 8804 4337 8806
      4284 8807 4285 8892 4369 8861 4367 8801
TIME...MOT...LOC 1601Z 254DEG 35KT 4360 8876 4289 8907 

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

$$

GEHRING

5 follow-up statements

156 
WWUS53 KMKX 121618
SVSMKX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
1118 AM CDT MON MAY 12 2014

WIC027-039-055-117-131-133-121715-
/O.CON.KMKX.SV.W.0023.000000T0000Z-140512T1715Z/
JEFFERSON WI-SHEBOYGAN WI-WASHINGTON WI-DODGE WI-WAUKESHA WI-
FOND DU LAC WI-
1118 AM CDT MON MAY 12 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1215 PM CDT
FOR JEFFERSON...SOUTHWESTERN SHEBOYGAN...WASHINGTON...EASTERN
DODGE...WAUKESHA AND SOUTHEASTERN FOND DU LAC COUNTIES...

AT 1118 AM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM NEAR WAUPUN TO LAKE KOSHKONONG...MOVING EAST AT 40
MPH.

HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL. 

SOURCE...RADAR INDICATED. 

IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE TO 
         ROOFS...SIDING AND TREES. 

THESE SEVERE STORMS WILL BE NEAR...
  OAKFIELD AROUND 1130 AM CDT.
  WHITEWATER AND LOMIRA AROUND 1135 AM CDT.
  CAMPBELLSPORT AND PALMYRA AROUND 1145 AM CDT.
  OCONOMOWOC...DOUSMAN AND NORTH PRAIRIE AROUND 1155 AM CDT.
  DELAFIELD AND WALES AROUND 1205 PM CDT.
  WAUKESHA...PEWAUKEE...HARTLAND AND MERTON AROUND 1210 PM CDT.
  NEW BERLIN...SUSSEX AND ELM GROVE AROUND 1215 PM CDT.

OTHER LOCATIONS IMPACTED BY THESE SEVERE THUNDERSTORMS INCLUDE LAKE
LAC LA BELLE...ASHFORD...DUNDEE...MAPLETON...MINNESOTA JUNCTION...OAK
CENTER...GERMANTOWN...GENESEE...NASHOTAH AND LAPHAM PEAK ST PARK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 4354 8802 4354 8804 4337 8804 4337 8806
      4284 8807 4285 8892 4369 8861 4367 8801
TIME...MOT...LOC 1618Z 254DEG 35KT 4362 8865 4291 8896 

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

$$

JRW

851 
WWUS53 KMKX 121633
SVSMKX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
1133 AM CDT MON MAY 12 2014

WIC027-039-055-117-131-133-121715-
/O.CON.KMKX.SV.W.0023.000000T0000Z-140512T1715Z/
JEFFERSON WI-SHEBOYGAN WI-WASHINGTON WI-DODGE WI-WAUKESHA WI-
FOND DU LAC WI-
1133 AM CDT MON MAY 12 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1215 PM CDT
FOR JEFFERSON...SOUTHWESTERN SHEBOYGAN...WASHINGTON...EASTERN
DODGE...WAUKESHA AND SOUTHEASTERN FOND DU LAC COUNTIES...

AT 1131 AM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM NEAR OAKFIELD TO NEAR FORT ATKINSON...MOVING EAST AT
40 MPH.

HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL. 

SOURCE...LAW ENFORCEMENT. AT 1130 DIME SIZE HAIL WAS          
REPORTED AT LOMRIA. 

IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE TO 
         ROOFS...SIDING AND TREES. 

LOCATIONS IMPACTED INCLUDE...
WAUKESHA...WEST ALLIS...WAUWATOSA...NEW BERLIN...BROOKFIELD...
GREENFIELD...MENOMONEE FALLS...WEST BEND...MUSKEGO...WATERTOWN...
WHITEWATER...HARTFORD...PEWAUKEE...FORT ATKINSON...SUSSEX...
HARTLAND...JEFFERSON...HALES CORNERS...MUKWONAGO AND DELAFIELD.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 4354 8802 4354 8804 4337 8804 4337 8806
      4284 8807 4285 8892 4368 8860 4367 8801
TIME...MOT...LOC 1631Z 254DEG 35KT 4363 8858 4292 8889 

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

$$

JRW

765 
WWUS53 KMKX 121642
SVSMKX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
1142 AM CDT MON MAY 12 2014

WIC027-039-055-117-131-133-121715-
/O.CON.KMKX.SV.W.0023.000000T0000Z-140512T1715Z/
JEFFERSON WI-SHEBOYGAN WI-WASHINGTON WI-DODGE WI-WAUKESHA WI-
FOND DU LAC WI-
1142 AM CDT MON MAY 12 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1215 PM CDT
FOR EASTERN JEFFERSON...SOUTHWESTERN SHEBOYGAN...WASHINGTON...
SOUTHEASTERN DODGE...WAUKESHA AND SOUTHEASTERN FOND DU LAC
COUNTIES...

AT 1141 AM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM NEAR LOMIRA TO NEAR FORT ATKINSON...MOVING EAST AT 40
MPH.

HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL. 

SOURCE...RADAR INDICATED. 

IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE TO 
         ROOFS...SIDING AND TREES. 

LOCATIONS IMPACTED INCLUDE...
WAUKESHA...WEST ALLIS...WAUWATOSA...NEW BERLIN...BROOKFIELD...
GREENFIELD...MENOMONEE FALLS...WEST BEND...MUSKEGO...WHITEWATER...
HARTFORD...PEWAUKEE...FORT ATKINSON...SUSSEX...HARTLAND...
JEFFERSON...HALES CORNERS...MUKWONAGO...DELAFIELD AND JACKSON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

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.

&&

LAT...LON 4354 8802 4354 8804 4337 8804 4337 8806
      4284 8807 4285 8892 4366 8835 4367 8801
TIME...MOT...LOC 1641Z 254DEG 35KT 4366 8846 4295 8877 

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

$$

JRW

352 
WWUS53 KMKX 121655
SVSMKX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
1155 AM CDT MON MAY 12 2014

WIC027-121704-
/O.CAN.KMKX.SV.W.0023.000000T0000Z-140512T1715Z/
DODGE WI-

1155 AM CDT MON MAY 12 2014

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

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAVE WEAKENED.  
THEREFORE THE WARNING HAS BEEN CANCELLED.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 500 PM CDT MONDAY
AFTERNOON FOR SOUTHEAST WISCONSIN.

LAT...LON 4354 8802 4354 8804 4337 8804 4337 8806
      4284 8807 4285 8879 4320 8860 4320 8842
      4354 8840 4365 8834 4366 8801
TIME...MOT...LOC 1654Z 254DEG 35KT 4369 8832 4298 8863 

$$

WIC039-055-117-131-133-121715-
/O.CON.KMKX.SV.W.0023.000000T0000Z-140512T1715Z/
JEFFERSON WI-SHEBOYGAN WI-WASHINGTON WI-WAUKESHA WI-FOND DU LAC WI-
1155 AM CDT MON MAY 12 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1215 PM CDT
FOR EASTERN JEFFERSON...SOUTHWESTERN SHEBOYGAN...WASHINGTON...
WAUKESHA AND SOUTHEASTERN FOND DU LAC COUNTIES...

AT 1154 AM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 6 MILES NORTH OF CAMPBELLSPORT TO 7 MILES NORTH OF
PALMYRA...MOVING EAST AT 40 MPH.

HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL. 

SOURCE...RADAR INDICATED. 

IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE TO 
         ROOFS...SIDING AND TREES. 

LOCATIONS IMPACTED INCLUDE...
WAUKESHA...WEST ALLIS...WAUWATOSA...NEW BERLIN...BROOKFIELD...
GREENFIELD...MENOMONEE FALLS...WEST BEND...MUSKEGO...WHITEWATER...
HARTFORD...PEWAUKEE...SUSSEX...HARTLAND...HALES CORNERS...
MUKWONAGO...DELAFIELD...JACKSON...ELM GROVE AND SLINGER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 4354 8802 4354 8804 4337 8804 4337 8806
      4284 8807 4285 8879 4320 8860 4320 8842
      4354 8840 4365 8834 4366 8801
TIME...MOT...LOC 1654Z 254DEG 35KT 4369 8832 4298 8863 

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

$$

JRW

441 
WWUS53 KMKX 121710
SVSMKX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
1210 PM CDT MON MAY 12 2014

WIC039-055-117-131-133-121720-
/O.EXP.KMKX.SV.W.0023.000000T0000Z-140512T1715Z/
JEFFERSON WI-SHEBOYGAN WI-WASHINGTON WI-WAUKESHA WI-FOND DU LAC WI-
1210 PM CDT MON MAY 12 2014

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN JEFFERSON...
SOUTHWESTERN SHEBOYGAN...WASHINGTON...WAUKESHA AND SOUTHEASTERN FOND
DU LAC COUNTIES WILL EXPIRE AT 1215 PM CDT...
            
THE LINE OF 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.  HOWEVER
HEAVY RAIN IS STILL POSSIBLE WITH THESE THUNDERSTORMS.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 500 PM CDT MONDAY
AFTERNOON FOR SOUTHEAST WISCONSIN.

LAT...LON 4354 8802 4354 8804 4337 8804 4337 8806
      4284 8807 4285 8879 4320 8860 4320 8842
      4354 8840 4365 8834 4366 8801
TIME...MOT...LOC 1705Z 254DEG 35KT 4369 8832 4298 8863 

$$

JRW

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 May 12, 3:40 AM CDT, 7 hours 22 minutes earlier.

Area forecast discussion, May 12, 3:40 AM CDT, 7 hours 22 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
340 AM CDT MON MAY 12 2014

.TODAY AND TONIGHT...FORECAST CONFIDENCE...HIGH

THE UPPER LEVEL RIDGE OVER THE WESTERN GREAT LAKES AHEAD OF THE
STRONG WESTERN TROUGH ACROSS THE ROCKIES WILL PUSH INTO THE EASTERN
GREAT LAKES BY SUNRISE TUESDAY.  THE 105 KNOT JET MAX WAS LIFTING
NORTHEAST FROM THE BASE OF THE TROUGH THIS MORNING AND WILL REACH
WESTERN MINNESOTA THIS EVENING STRENGTHENING TO 115 KNOTS. WEAK TO
MODERATE UPPER DIVERGENCE CONTINUES ACROSS SOUTHERN WISCONSIN TODAY
AND TONIGHT.

A 700 MB WIND MAX OF 40 KNOTS PUSHES INTO CENTRAL WISCONSIN BY
SUNRISE.  A SECOND STRONGER 700 MB WIND MAX OF 55 KNOTS ASSOCIATED
WITH THE MAIN TROUGH REACHES WESTERN WISCONSIN THIS EVENING AND
PUSHES EAST EARLY TUESDAY MORNING. AT 850 MB A 50 KNOT LOW LEVEL JET
ACROSS EASTERN KANSAS INTO SOUTHERN IOWA PUSHES INTO SOUTHWEST
WISCONSIN JUST AFTER SUNRISE BEFORE WEAKENING AND LIFTING NORTH
LATER THIS MORNING.  A 45 KNOT 850 MB JET MAX ALSO MOVES ACROSS
SOUTHERN WISCONSIN LATE TONIGHT.

700 MB MODERATE UPWARD MOTION OCCURS EARLY THIS MORNING WITH THE
APPROACHING LOW LEVEL JET MAX AND 850 MB MOISTURE CONVERGENCE AS THE
WARM FRONT ADVANCES NORTH. THEREFORE EXPECT AN AREA OF THUNDERSTORMS
TO ROLL THROUGH THIS MORNING. SOME MAY PRODUCE BRIEF HEAVY RAINS.

850/700 MB DEW POINTS INCREASE THIS MORNING WITH 850 MB DEWPOINTS
AROUND 11 TO 12 CELSIUS THIS EVENING UNTIL THE CONVECTION OCCURS.

BY AFTERNOON SOUTH CENTRAL AND SOUTHEAST WISCONSIN WILL BE IN THE
WARM SECTOR.  UNTIL THEN EAST TO SOUTHEAST WINDS WILL KEEP THE
LAKESHORE AREAS COOL WITH SOME FOG POSSIBLE AS THE AIRMASS DEW
POINTS RISE INTO IN THE MID 60S...WITH SOME UPPER 60S POSSIBLE.
INLAND AREAS SHOULD REACH 80...BUT AREAS ALONG THE LAKE...ESPECIALLY
TOWARD SHEBOYGAN SHOULD STAY COOLER WITH SOUTH/SOUTHEAST FLOW MUCH
OF THE DAY.

WITH MODELS PRODUCING SOME PRECIPITATION TODAY IN THE WARM
SECTOR...THE AMOUNT OF MODEL CAPE IS LIKELY LESS THAN WHAT WILL
OCCUR. THERE WILL BE A CHANCE OF THUNDERSTORMS...BUT LIFTING
MECHANISM DIFFICULT FOR TIMING DUE TO LIKELY MORNING CONVECTION AND
BOUNDARIES.

FOCUS FOR SEVERE WILL LIKELY BE IN AREAS WEST OF MADISON EARLY THIS
EVENING AHEAD OF THE ADVANCING COLD FRONT. HELICITY VALUES DO RISE
TO NEAR 200 WITH SOME LOW LEVEL VEERING.  THEREFORE THERE WILL BE A
TORNADO THREAT.  COLD FRONT THEN MOVES ACROSS SOUTHERN WISCONSIN
TONIGHT WITH A LINE OF THUNDERSTORMS EXPECTED.  CAPE VALUES WILL
DECREASE AS THE STORMS MOVE EAST DUE TO DIURNAL COOLING.

LOCAL SEVERE PROBABILITY CWASP VALUES INCREASE TO 75 TO 80 PCT INTO
PORTIONS OF SOUTH CENTRAL WISCONSIN THIS AFTERNOON AND EARLY EVENING
WITH 70 PCT EAST.

.TUESDAY AND WEDNESDAY...FORECAST CONFIDENCE...MEDIUM

THE SURFACE COLD FRONT SHOULD BE THROUGH BY DAYBREAK
TUESDAY...WITH A FEW SHOWERS/STORMS POSSIBLY LINGERING EAST IN THE
MORNING. IT SHOULD BE DRY THEN THE REST OF THE DAY WITH MUCH
COOLER TEMPS BEHIND THE DEPARTING FRONT.

DRY WEATHER WILL THEN PERSIST TUESDAY NIGHT THROUGH AT LEAST
WEDNESDAY MORNING. LOW PRESSURE PASSING BY WELL TO THE SOUTHEAST
MAY BRING SOME LIGHT RAIN THEN LATE WEDNESDAY AFTERNOON INTO THE
NIGHT...MAINLY ACROSS THE SOUTHEAST. EVEN COOLER TEMPS ARE LIKELY
WEDNESDAY...STRUGGLING INTO THE UPPER 50S MOST PLACES.

.THURSDAY THROUGH SUNDAY...FORECAST CONFIDENCE...MEDIUM

NORTHWEST FLOW WILL BRING CONTINUED BELOW NORMAL TEMPERATURES FOR
THURSDAY THROUGH THE WEEKEND. A SERIES OF SHORTWAVES WILL ALSO
BRING A CHANCE FOR SHOWERS AT TIMES.

&&

.AVIATION/12Z TAFS/...

STILL EXPECTING SOME MVFR CIGS/VSBYS AHEAD OF A WARM FRONT.  THE
WARM FRONT WILL LIFT NORTH THIS MORNING...BUT SOME SOUTHEAST FLOW
MAY STILL AFFECT THE LAKESHORE AREAS OF LAKE MICHIGAN WITH MVFR
VSBYS IN FOG/HAZE.

EXPECT AN AREA OF THUNDERSTORMS THIS MORNING WITH THE WARM FRONT AND
A CHANCE OF THUNDERSTORMS THIS AFTERNOON.  THEN MORE THUNDERSTORMS
LIKELY WITH A COLD FRONT TONIGHT.  SOME OF THE STORMS COULD BE
SEVERE...ESPECIALLY THIS AFTERNOON AND EVENING. IFR CONDITIONS IN
ANY STORMS.

&&

.MARINE...

LIGHT EAST TO SOUTHEAST WINDS THIS MORNING AHEAD OF AN ADVANCING
WARM FRONT WILL BRING AREAS OF FOG.  THE WARM FRONT WILL MOVE NORTH
LATER TODAY BUT A WEAK ONSHORE FLOW WILL LIKELY CONTINUE NORTH OF
MILWAUKEE.  LOOK FOR PERIODS OF THUNDERSTORMS TODAY AND TONIGHT.
SOME MAY BE SEVERE ESPECIALLY TONIGHT.

&&

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

TODAY/TONIGHT AND AVIATION/MARINE...HENTZ
TUESDAY THROUGH SUNDAY...DDV

Hazardous weather outlook, May 12, 10:23 AM CDT, 39 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
1023 AM CDT MON MAY 12 2014

WIZ046-047-051-052-056>060-062>072-131530-
MARQUETTE-GREEN LAKE-FOND DU LAC-SHEBOYGAN-SAUK-COLUMBIA-DODGE-
WASHINGTON-OZAUKEE-IOWA-DANE-JEFFERSON-WAUKESHA-MILWAUKEE-
LAFAYETTE-GREEN-ROCK-WALWORTH-RACINE-KENOSHA-
1023 AM CDT MON MAY 12 2014

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EAST CENTRAL
WISCONSIN...SOUTH CENTRAL WISCONSIN AND SOUTHEAST WISCONSIN.

.DAY ONE...REST OF TODAY AND TONIGHT

A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 5 PM CDT THIS
AFTERNOON. STRONG TO SEVERE THUNDERSTORMS WILL CONTINUE TO AFFECT
SOUTH CENTRAL INTO SOUTHEAST WISCONSIN. THE PRIMARY SEVERE WEATHER
HAZARDS ARE DAMAGING WINDS AND LARGE HAIL.

MORE THUNDERSTORMS ARE EXPECTED LATER THIS AFTERNOON AND TONIGHT
AS A COLD FRONT MOVES ACROSS SOUTHERN WISCONSIN AND IT ENCOUNTERS
WARM...HUMID AND UNSTABLE AIR OVER THE REGION.

THERE WILL REMAIN A SLIGHT RISK FOR SEVERE THUNDERSTORMS WITH
LARGE HAIL AND DAMAGING WINDS THE PRIMARY SEVERE WEATHER RISKS.
THERE WILL ALSO BE A TORNADO RISK LATE THIS AFTERNOON AND
EVENING...ESPECIALLY OVER SOUTH CENTRAL WISCONSIN WEST OF MADISON.

SOME OF THE THUNDERSTORMS WILL PRODUCE HEAVY RAINFALL.

AREAS OF DENSE FOG WILL CONTINUE THIS MORNING OVER SHEBOYGAN
COUNTY REDUCING THE VISIBILITY TO ONE QUARTER MILE OR LESS. A
DENSE FOG ADVISORY HAS BEEN POSTED UNTIL 1 PM CDT FOR SHEBOYGAN
COUNTY.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

NO WIDESPREAD HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED TODAY AND TONIGHT...ESPECIALLY IN
THE LATE AFTERNOON AND EVENING.

LMZ643>646-131530-
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-
1023 AM CDT MON MAY 12 2014

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF LAKE MICHIGAN.

.DAY ONE...REST OF TODAY AND TONIGHT

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 5 PM CDT.
STRONG THUNDERSTORMS ARE EXPECTED TO AFFECT THE NEAR SHORE WATERS
DURING THE EARLY AFTERNOON. THE PRIMARY SEVERE WEATHER RISKS WOULD
BE LARGE HAIL AND DAMAGING WINDS.

MORE THUNDERSTORMS ARE EXPECTED TONIGHT. THERE IS A SLIGHT RISK
FOR SEVERE THUNDERSTORMS WITH LARGE HAIL AND DAMAGING WINDS THE
PRIMARY SEVERE WEATHER RISKS.

A DENSE FOG ADVISORY IS IN EFFECT FOR SHEBOYGAN TO PORT WASHINGTON
THROUGH 2 PM.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

NORTHEAST WINDS AND WAVES MAY REACH SMALL CRAFT ADVISORY
CONDITIONS THURSDAY AND THURSDAY NIGHT.

WWW.WEATHER.GOV/MKX

MBK

In the hours before

Special weather statement, May 12, 9:33 AM CDT, 1 hour 29 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
933 AM CDT MON MAY 12 2014

WIZ056-057-062-063-067-068-121515-
DANE-LAFAYETTE-IOWA-GREEN-SAUK-COLUMBIA-
933 AM CDT MON MAY 12 2014

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT DANE...LAFAYETTE...
IOWA...GREEN...SAUK...COLUMBIA COUNTIES...

AT 933 AM CDT...A LINE OF STRONG THUNDERSTORMS WAS ALONG A LINE
EXTENDING FROM 6 MILES NORTHEAST OF RICHLAND CENTER TO NEAR SPRING
GREEN TO NEAR SCALES MOUND...AND MOVING NORTHEAST AT 50 MPH.

WINDS IN EXCESS OF 40 MPH AND NICKEL SIZE HAIL ARE POSSIBLE WITH
THESE STORMS.

THESE STORMS WILL BE NEAR...
  SPRING GREEN AROUND 940 AM CDT.
  MAZOMANIE AND BLACK EARTH AROUND 950 AM CDT.
  REEDSBURG AROUND 955 AM CDT.
  PRAIRIE DU SAC AND SAUK CITY AROUND 1000 AM CDT.
  BARABOO...WEST BARABOO AND ARGYLE AROUND 1005 AM CDT.
  WISCONSIN DELLS...LODI AND LAKE DELTON AROUND 1010 AM CDT.
  LAKE WISCONSIN AND POYNETTE AROUND 1015 AM CDT.

OTHER LOCATIONS IMPACTED BY THESE STORMS INCLUDE MOUNT VERNON...PINE
BLUFF...MERRIMAC...BROWNTOWN...SOMERS...WIOTA...PLAIN...HOLLANDALE...
ARENA AND LELAND.

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

LAT...LON 4251 9026 4307 9007 4323 9019 4353 9019
      4364 9000 4364 8964 4337 8942 4258 8969
      4251 8987
TIME...MOT...LOC 1433Z 238DEG 43KT 4339 9028 4310 9004 4244 9027

MBK

Local storm report, May 12, 9:39 AM CDT, 1 hour 23 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
939 AM CDT MON MAY 12 2014

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

0939 AM     HAIL             GOVERNOR DODGE ST PARK  43.02N 90.14W
05/12/2014  M0.25 INCH       IOWA               WI   LAW ENFORCEMENT

&&

RSCHAAR

Special weather statement, May 12, 10:01 AM CDT, 1 hour 1 minute before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
1001 AM CDT MON MAY 12 2014

WIZ056-057-062-063-067>069-121530-
DANE-LAFAYETTE-ROCK-IOWA-GREEN-SAUK-COLUMBIA-
1001 AM CDT MON MAY 12 2014

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT DANE...LAFAYETTE...
ROCK...IOWA...GREEN...SAUK...COLUMBIA...

AT 1001 AM CDT...A LINE OF STRONG THUNDERSTORMS WAS ALONG A LINE
EXTENDING FROM BARABOO TO NEAR MOUNT HOREB TO 6 MILES SOUTH OF
ARGYLE...AND MOVING NORTHEAST AT 50 MPH.

WIND GUSTS UP TO 50 MPH AND NICKEL SIZE HAIL ARE POSSIBLE WITH THESE
STORMS.

LOCATIONS IMPACTED INCLUDE...
MADISON...SUN PRAIRIE...FITCHBURG...MIDDLETON...STOUGHTON...
WAUNAKEE...BARABOO...MONROE...VERONA...PORTAGE...OREGON...
MCFARLAND...MONONA...MOUNT HOREB...WINDSOR...EVANSVILLE...PRAIRIE DU
SAC...SAUK CITY...LAKE WISCONSIN AND DEFOREST.

LAT...LON 4251 9000 4297 8984 4347 8990 4362 8922
      4323 8913 4268 8933 4251 8991
TIME...MOT...LOC 1501Z 242DEG 45KT 4347 8974 4303 8969 4260 8990

COLLAR

Local storm report, May 12, 10:52 AM CDT, 10 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
1052 AM CDT MON MAY 12 2014

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

0939 AM     HEAVY RAIN       PARDEEVILLE             43.53N 89.30W
05/12/2014  M0.75 INCH       COLUMBIA           WI   TRAINED SPOTTER

            ONE HOUR TOTAL

&&

RSCHAAR

Local storm report, May 12, 11:01 AM CDT, 1 minute before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
1101 AM CDT MON MAY 12 2014

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

1057 AM     TSTM WND DMG     DEERFIELD               43.05N 89.07W
05/12/2014                   DANE               WI   PUBLIC

            WIRES DOWN AND LEANING POWER POLE. HAIL ALSO REPORTED BUT
            SIZE UNKNOWN. RELAYED BY DANE COUNTY DISPATCH.

&&

MBK

The office that day

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

Issued	Product	Office	Counties	Lasted
May 12, 3:08 AM CDT	Special Weather Statement	MKX	Washington	22 min
May 12, 3:15 AM CDT	Special Weather Statement	MKX	Green Lake, Marquette	30 min
May 12, 3:31 AM CDT	Special Weather Statement	MKX	Ozaukee, Washington	29 min
May 12, 3:43 AM CDT	Special Weather Statement	MKX	Fond du Lac	32 min
May 12, 3:44 AM CDT	Special Weather Statement	MKX	Marquette	31 min
May 12, 4:11 AM CDT	Special Weather Statement	MKX	Ozaukee, Sheboygan	34 min
May 12, 4:21 AM CDT	Special Weather Statement	MKX	Columbia	24 min
May 12, 4:55 AM CDT	Special Weather Statement	MKX	Dodge	35 min
May 12, 9:05 AM CDT	Areal Flood Advisory	MKX	Columbia, Iowa, Sauk	3 hr
May 12, 9:14 AM CDT	Dense Fog Advisory	MKX	Sheboygan	4 hr
May 12, 9:33 AM CDT	Special Weather Statement	MKX	Lafayette, Sauk	42 min
May 12, 9:37 AM CDT	Marine Dense Fog Advisory	MKX		12 hr
May 12, 10:01 AM CDT	Special Weather Statement	MKX	Columbia, Dane, Green	29 min
May 12, 10:05 AM CDT	Severe Thunderstorm Warning	MKX	Columbia, Dane, Green, Rock, Sauk	25 min
May 12, 10:31 AM CDT	Severe Thunderstorm Warning	MKX	Columbia, Dane, Dodge, Green, Jefferson, Rock	44 min
May 12, 11:07 AM CDT	Special Marine Warning	MKX		113 min
May 12, 11:50 AM CDT	Severe Thunderstorm Warning	MKX	Ozaukee	40 min
May 12, 12:13 PM CDT	Special Weather Statement	MKX	Jefferson	32 min
May 12, 12:16 PM CDT	Areal Flood Advisory	MKX	Dane, Dodge, Jefferson, Milwaukee, Ozaukee, Rock and 4 more	3 hr
May 12, 12:30 PM CDT	Flash Flood Warning	MKX	Jefferson, Milwaukee, Ozaukee, Walworth, Washington, Waukesha	3 hr
May 12, 12:51 PM CDT	Special Marine Warning	MKX		84 min
May 12, 3:07 PM CDT	Severe Thunderstorm Warning	MKX	Rock, Walworth	38 min
May 12, 3:34 PM CDT	Severe Thunderstorm Warning	MKX	Rock, Walworth	41 min
May 12, 3:57 PM CDT	Severe Thunderstorm Warning	MKX	Jefferson, Rock, Walworth, Waukesha	63 min
May 12, 3:58 PM CDT	Severe Thunderstorm Warning	MKX	Walworth	47 min
May 12, 4:16 PM CDT	Severe Thunderstorm Warning	MKX	Dane, Dodge, Jefferson	44 min
May 12, 4:37 PM CDT	Severe Thunderstorm Warning	MKX	Kenosha, Racine, Walworth	23 min
May 12, 4:45 PM CDT	Tornado Warning	MKX	Kenosha, Racine, Walworth	45 min
May 12, 4:57 PM CDT	Severe Thunderstorm Warning	MKX	Jefferson, Waukesha	33 min
May 12, 5:04 PM CDT	Severe Thunderstorm Warning	MKX	Kenosha, Racine, Walworth	26 min
May 12, 5:09 PM CDT	Special Marine Warning	MKX		96 min
May 12, 5:14 PM CDT	Severe Thunderstorm Warning	MKX	Kenosha, Racine	46 min
May 12, 5:55 PM CDT	Special Weather Statement	MKX	Kenosha, Racine	50 min
May 12, 6:16 PM CDT	Special Weather Statement	MKX	Jefferson	29 min
May 12, 6:18 PM CDT	Special Weather Statement	MKX	Waukesha	27 min
May 12, 6:28 PM CDT	Areal Flood Advisory	MKX	Dane, Dodge, Green, Jefferson, Rock, Waukesha	2 hr
May 12, 6:42 PM CDT	Severe Thunderstorm Warning	MKX	Jefferson, Walworth, Waukesha	33 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2014 Every severe thunderstorm warning in 2014

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.