Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 23, NWS Milwaukee, WI

July 13, 20157 counties in Wisconsin

NWS Milwaukee, WI issued this severe thunderstorm warning at Jul 13, 2015, 3:35 AM CDT for 7 counties in Wisconsin. It was in force for 55 min. 16 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: Jul 13, 2015, 3:35 AM CDT (08:35 UTC)
Expired: Jul 13, 2015, 4:30 AM CDT
In force: 55 min
Issued by: NWS Milwaukee, WI
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Columbia County, WI, Dane County, WI, Dodge County, WI, Fond du Lac County, WI, Green Lake County, WI, Iowa County, WI, Sauk County, WI

The radar

The Milwaukee radar (KMKX), 95 km from the middle of the area, began a volume at 08:38 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
Jul 13, 3:35 AM CDT	TSTM WND DMG	Plain, WI	TREES DOWN ACROSS MUCH OF SOUTHERN SAUK COUNTY.
Jul 13, 3:51 AM CDT	TSTM WND DMG	Arena, WI	TREES AND POWER LINES DOWN.
Jul 13, 3:59 AM CDT	TSTM WND GST 51	3 Ne Maple Bluff, WI	ASOS STATION MADISON DANE COUNTY AIRPORT /MSN/
Jul 13, 4:00 AM CDT	TSTM WND GST 55	De Forest, WI	RELAYED VIA FACEBOOK.
Jul 13, 4:05 AM CDT	TSTM WND DMG	Columbus, WI	MULTIPLE TREES DOWN
Jul 13, 4:05 AM CDT	TSTM WND DMG	Columbus, WI	LARGE TREES DOWN N HOUSES.
Jul 13, 4:05 AM CDT	TSTM WND DMG	Cross Plains, WI	LARGE TREES DOWN ON HOUSES. STREETS FLOODED AND BLOCKED.
Jul 13, 4:05 AM CDT	TSTM WND DMG	Cross Plains, WI	POWER LINES AND BRANCHES DOWN.
Jul 13, 4:05 AM CDT	TSTM WND GST 64	Sun Prairie, WI	WIND SPEED MEASURED VIA HOME WEATHER STATION. RELAYED VIA FACEBOOK.
Jul 13, 4:05 AM CDT	TSTM WND GST 100	Columbus, WI	NUMEROUS LARGE TREES DOWN IN AREA. A FEW OUTBUILDINGS DAMAGED OR DESTROYED. NWS STORM SURVEY ESITMATES 90-110 MPH WINDS.
Jul 13, 4:07 AM CDT	TSTM WND DMG	Brandon, WI	NUMEROUS REPORTS OF TREES DOWN AND ARCING POWER LINES ACROSS SOUTHERN FOND DU LAC COUNTY.
Jul 13, 4:15 AM CDT	TSTM WND DMG	Mount Horeb, WI	MANY TREES DOWN, AT LEAST ONE ON A HOUSE AND ONE ON POWERLINES. RELAYED VIA TWITTER.
Jul 13, 4:16 AM CDT	TSTM WND GST 60	2 N Sun Prairie, WI	RELAYED VIA FACEBOOK.
Jul 13, 4:16 AM CDT	TSTM WND GST 60	Beaver Dam, WI	RELAYED VIA FACEBOOK.
Jul 13, 4:25 AM CDT	HAIL 1	Juneau, WI	HAIL WITH DAMAGING WINDS. 50 FT TREE DOWN IN YARD
Jul 13, 4:27 AM CDT	TSTM WND GST 64	15 Nw Clyman, WI	MEASURED WITH A HOME WEATHER STATION. RELAYED VIA FACEBOOK.

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 14 storm reports to this severe thunderstorm warning; the first came 0 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 nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 00:00Z, 8.6 hours before the alert went out and 165 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: 321 J/kg
Mixed-layer CIN: -181 J/kg
Mixed-layer LCL: 1212 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 97 m²/s²
0-3 km storm-relative helicity: 133 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.1

Open this sounding in Storm Lab

The text

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

030 
WUUS53 KMKX 130835
SVRMKX
WIC021-025-027-039-047-049-111-130930-
/O.NEW.KMKX.SV.W.0023.150713T0835Z-150713T0930Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
335 AM CDT MON JUL 13 2015

THE NATIONAL WEATHER SERVICE IN MILWAUKEE/SULLIVAN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN IOWA COUNTY IN SOUTH CENTRAL WISCONSIN...
  SOUTHERN SAUK COUNTY IN SOUTH CENTRAL WISCONSIN...
  COLUMBIA COUNTY IN SOUTH CENTRAL WISCONSIN...
  GREEN LAKE COUNTY IN SOUTH CENTRAL WISCONSIN...
  DODGE COUNTY IN SOUTHEASTERN WISCONSIN...
  NORTHERN DANE COUNTY IN SOUTH CENTRAL WISCONSIN...
  SOUTHWESTERN FOND DU LAC COUNTY IN EAST CENTRAL WISCONSIN...

* UNTIL 430 AM CDT

* AT 335 AM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
  EXTENDING FROM PRINCETON TO NEAR POYNETTE TO NEAR MUSCODA...MOVING
  SOUTHEAST AT 55 MPH.

  HAZARD...60 MPH WIND GUSTS. 

  SOURCE...RADAR INDICATED. 

  IMPACT...EXPECT DAMAGE TO ROOFS...SIDING AND TREES. 

* LOCATIONS IMPACTED INCLUDE...
  MADISON...FOND DU LAC...SUN PRAIRIE...MIDDLETON...BEAVER DAM...
  WAUNAKEE...WAUPUN...PORTAGE...RIPON...MOUNT HOREB...WINDSOR...
  MAYVILLE...COLUMBUS...PRAIRIE DU SAC...MARSHALL...HORICON...SAUK
  CITY...JUNEAU...LAKE WISCONSIN AND DEFOREST.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4320 9043 4321 9030 4317 9020 4328 9019
      4347 8952 4364 8939 4364 8925 4376 8925
      4377 8917 4387 8920 4392 8917 4373 8836
      4323 8877 4320 8901 4317 8901 4298 8984
      4312 9043
TIME...MOT...LOC 0835Z 293DEG 49KT 4383 8913 4345 8942 4316 9041 

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

MBK

4 follow-up statements

096 
WWUS53 KMKX 130849
SVSMKX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
349 AM CDT MON JUL 13 2015

WIC021-025-027-039-047-049-111-130930-
/O.CON.KMKX.SV.W.0023.000000T0000Z-150713T0930Z/
IOWA WI-SAUK WI-COLUMBIA WI-GREEN LAKE WI-DODGE WI-DANE WI-
FOND DU LAC WI-
349 AM CDT MON JUL 13 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 AM CDT
FOR NORTHERN IOWA...SOUTHERN SAUK...COLUMBIA...GREEN LAKE...DODGE...
NORTHERN DANE AND SOUTHWESTERN FOND DU LAC COUNTIES...

AT 347 AM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM NEAR MARKESAN TO NEAR RIO TO 9 MILES SOUTHWEST OF 
SPRING GREEN...MOVING SOUTHEAST AT 55 MPH. AT 334 AM CDT...A WIND 
GUST OF 68 MPH WAS REPORTED AT LONE ROCK.

HAZARD...70 MPH WIND GUSTS. 

SOURCE...RADAR INDICATED. 

IMPACT...EXPECT CONSIDERABLE TREE DAMAGE. DAMAGE IS LIKELY TO MOBILE 
         HOMES...ROOFS AND OUTBUILDINGS. 

LOCATIONS IMPACTED INCLUDE...
MADISON...FOND DU LAC...SUN PRAIRIE...MIDDLETON...BEAVER DAM...
WAUNAKEE...WAUPUN...PORTAGE...RIPON...MOUNT HOREB...WINDSOR...
MAYVILLE...COLUMBUS...PRAIRIE DU SAC...MARSHALL...HORICON...SAUK
CITY...JUNEAU...LAKE WISCONSIN AND DEFOREST.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4320 9043 4321 9030 4317 9020 4328 9019
      4347 8952 4364 8939 4364 8925 4376 8925
      4377 8917 4387 8920 4392 8917 4373 8836
      4323 8877 4320 8901 4317 8901 4298 8984
      4312 9043
TIME...MOT...LOC 0847Z 293DEG 49KT 4377 8893 4339 8922 4310 9021 

HAIL...<.75IN
WIND...70MPH
 
$$

SPM

154 
WWUS53 KMKX 130901
SVSMKX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
401 AM CDT MON JUL 13 2015

WIC021-025-027-039-047-049-111-130930-
/O.CON.KMKX.SV.W.0023.000000T0000Z-150713T0930Z/
IOWA WI-SAUK WI-COLUMBIA WI-GREEN LAKE WI-DODGE WI-DANE WI-
FOND DU LAC WI-
401 AM CDT MON JUL 13 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 AM CDT
FOR NORTHERN IOWA...SOUTHEASTERN SAUK...COLUMBIA...GREEN LAKE...
DODGE...NORTHERN DANE AND SOUTHWESTERN FOND DU LAC COUNTIES...

AT 359 AM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM NEAR BRANDON TO COLUMBUS TO 7 MILES NORTHEAST OF 
DODGEVILLE...MOVING SOUTHEAST AT 55 MPH. AT 334 AM...A WIND GUST OF 
68 MPH WAS REPORTED AT LONE ROCK.

HAZARD...70 MPH WIND GUSTS. 

SOURCE...RADAR INDICATED. 

IMPACT...EXPECT CONSIDERABLE TREE DAMAGE. DAMAGE IS LIKELY TO MOBILE 
         HOMES...ROOFS AND OUTBUILDINGS. 

LOCATIONS IMPACTED INCLUDE...
MADISON...FOND DU LAC...SUN PRAIRIE...MIDDLETON...BEAVER DAM...
WAUNAKEE...WAUPUN...RIPON...MOUNT HOREB...WINDSOR...MAYVILLE...
COLUMBUS...PRAIRIE DU SAC...MARSHALL...HORICON...SAUK CITY...
JUNEAU...LAKE WISCONSIN...DEFOREST AND CROSS PLAINS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS SITUATION. SEEK SHELTER NOW INSIDE A STURDY 
STRUCTURE AND STAY AWAY FROM WINDOWS.
 
&&

LAT...LON 4320 9043 4321 9030 4317 9020 4320 9020
      4320 9018 4321 9018 4347 8952 4358 8935
      4364 8925 4375 8924 4377 8917 4387 8920
      4392 8917 4373 8836 4323 8877 4320 8901
      4317 8901 4298 8984 4312 9043
TIME...MOT...LOC 0859Z 293DEG 49KT 4371 8875 4333 8904 4304 9003 

HAIL...<.75IN
WIND...70MPH
 
$$

SPM

522 
WWUS53 KMKX 130917
SVSMKX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
417 AM CDT MON JUL 13 2015

WIC021-025-027-039-047-049-111-130930-
/O.CON.KMKX.SV.W.0023.000000T0000Z-150713T0930Z/
IOWA WI-SAUK WI-COLUMBIA WI-GREEN LAKE WI-DODGE WI-DANE WI-
FOND DU LAC WI-
417 AM CDT MON JUL 13 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 AM CDT
FOR NORTHERN IOWA...SOUTHEASTERN SAUK...EASTERN COLUMBIA...
SOUTHEASTERN GREEN LAKE...DODGE...NORTHERN DANE AND SOUTHWESTERN FOND
DU LAC COUNTIES...

AT 416 AM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM NEAR LOMIRA TO NEAR WATERTOWN TO NEAR MOUNT HOREB...
MOVING SOUTHEAST AT 55 MPH.

HAZARD...70 MPH WIND GUSTS. 

SOURCE...RADAR INDICATED. 

IMPACT...EXPECT CONSIDERABLE TREE DAMAGE. DAMAGE IS LIKELY TO MOBILE 
         HOMES...ROOFS AND OUTBUILDINGS. 

LOCATIONS IMPACTED INCLUDE...
MADISON...FOND DU LAC...SUN PRAIRIE...MIDDLETON...BEAVER DAM...
WAUNAKEE...WAUPUN...RIPON...MOUNT HOREB...WINDSOR...MAYVILLE...
COLUMBUS...PRAIRIE DU SAC...MARSHALL...HORICON...SAUK CITY...
JUNEAU...DEFOREST...CROSS PLAINS AND LODI.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS SITUATION. SEEK SHELTER NOW INSIDE A STURDY 
STRUCTURE AND STAY AWAY FROM WINDOWS.
 
&&

LAT...LON 4320 9043 4321 9030 4317 9020 4320 9020
      4320 9018 4321 9018 4333 8957 4344 8937
      4355 8929 4359 8921 4366 8910 4379 8901
      4387 8897 4373 8836 4323 8877 4320 8901
      4317 8901 4298 8984 4312 9043
TIME...MOT...LOC 0916Z 293DEG 49KT 4362 8846 4324 8875 4295 8974 

HAIL...<.75IN
WIND...70MPH
 
$$

SPM

999 
WWUS53 KMKX 130927
SVSMKX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
427 AM CDT MON JUL 13 2015

WIC021-025-027-039-047-049-111-130936-
/O.EXP.KMKX.SV.W.0023.000000T0000Z-150713T0930Z/
IOWA WI-SAUK WI-COLUMBIA WI-GREEN LAKE WI-DODGE WI-DANE WI-
FOND DU LAC WI-
427 AM CDT MON JUL 13 2015

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN IOWA...SOUTHEASTERN
SAUK...EASTERN COLUMBIA...SOUTHEASTERN GREEN LAKE...DODGE...NORTHERN
DANE AND SOUTHWESTERN FOND DU LAC COUNTIES WILL EXPIRE AT 430 AM
CDT...
    
THE STORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE AREA. 
THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE. HOWEVER...WIND 
GUSTS OF 30 TO 45 MPH REMAIN POSSIBLE.

LAT...LON 4320 9043 4321 9030 4317 9020 4320 9020
      4320 9018 4321 9018 4333 8957 4344 8937
      4355 8929 4359 8921 4366 8910 4379 8901
      4387 8897 4373 8836 4323 8877 4320 8901
      4317 8901 4298 8984 4312 9043
TIME...MOT...LOC 0923Z 293DEG 49KT 4362 8846 4324 8875 4295 8974 

$$

SPM

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 Jul 13, 2:53 AM CDT, 42 minutes earlier.

Area forecast discussion, Jul 13, 2:53 AM CDT, 42 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
253 AM CDT MON JUL 13 2015

.TODAY AND TONIGHT...FORECAST CONFIDENCE MEDIUM.

THE MORNING CONVECTION SHOULD MOVE OUT OF SOUTHEAST WISCONSIN BY MID
MORNING...POSSIBLY SOONER. IT LOOKS LIKE THE REST OF THE MORNING AND
POSSIBLY THROUGH ABOUT MID AFTERNOON MAY BE DRY. I/LL GO DRY FOR A
FEW HOURS IN THE WAKE OF THE MORNING STORMS...BUT INCREASE POPS
AGAIN TOWARD NOON.  THIS BIG SYSTEM WILL LAY OUT A STABLE AIRMASS
THAT WILL TAKE TIME TO MIX OUT AND RECOVER.  DEW POINTS WILL REMAIN
VERY ELEVATED IN THE LOWER TO MID 70S. WE SHOULD THEN SEE A MORE OR
LESS UNCAPPED AIRMASS DEVELOP WITH CAPE CLIMBING TO NEAR 3000J/KG
LATER THIS AFTERNOON. THIS IS AT A TIME WE HAVE A SURFACE TROF
APPROACHING FROM THE WEST...COUPLED WITH STRONG WESTERLIES ALOFT
ASSOCIATED WITH A SERIES OF MID LEVEL SHORT WAVES TRACKING THROUGH A
ZONAL TO NORTHWEST FLOW.  DEEP LAYER SHEAR OFF THE NAM SHOWS 40-
50KTS IN THE LATE AFTERNOON/EVENING. SPC HAS KEPT THE ENTIRE AREA IN
A SLIGHT RISK WITH THE ENHANCED AREA ACROSS THE FAR SOUTH/SOUTHWEST.
THE STORM PREDICTION CENTER DAY 1 DISCUSSION COVERS THE REGIONAL
DETAILS WELL. WE ARE ON THE NORTHERN PERIPHERY OF THE EXPECTED
REDEVELOPMENT THIS AFTERNOON WITH THE BIG FOCUS SOUTH ACROSS
ILLINOIS INTO THE OHIO VALLEY. IT/S ENTIRELY POSSIBLE THAT THE
REDEVELOPMENT WILL OCCUR JUST TO OUR SOUTH AND WE MAY ESCAPE THE BAD
STUFF.  THE THREAT FOR STORMS WILL LINGER INTO THE EVENING WITH
DRIER WEATHER MOVING IN AFTER MIDNIGHT.

.TUESDAY - CONFIDENCE...MEDIUM
500 MILLIBAR SHORTWAVE TROUGH PROGGD TO SLIDE SOUTHEAST THROUGH
THE AREA. IN ADDITION...850/925 BOUNDARY WILL DROPPING INTO THE
AREA SHIFTING WINDS TO THE NORTHEAST ESPECIALLY NEAR LAKE
MICHIGAN. THE NAM HAS COME AROUND TO BE MORE IN LINE WITH THE
GFS/ECMWF WITH REGARDS TO THIS WIND SHIFT WITH POTENTIALLY GUSTY
NNE WINDS ESP NEAR THE LAKE IN THE AFTERNOON AFTER THE FROPA. WILL
KEEP THE CHANCE POPS GOING FOR POPS UP SHRA/TSRA WITH GFS BUFKIT
SHOWING SOME CAPE VALUES PUSHING 1000 J/KG.

.TUESDAY NIGHT THROUGH WEDNESDAY NIGHT - CONFIDENCE...MEDIUM
MODELS SHOW HIGH PRESSURE BUILDING IN WITH NE-E FLOW AND COOLER
AIRMASS. LEFT A SMALL POP FOR INLAND AREAS DURING THE EVENING TO
ACCOUNT FOR ANY LINGERING SHRA FROM ANY AFTERNOON DEVELOPMENT. 500
MILLIBAR HEIGHTS WILL BE BUILDING INTO WEDNESDAY. MODELS HAVE
BACKED OFF ON PRECIP DEVELOPMENT FOR THE CWA DURG THE AFTN. NOT
SEEING THE SUSPICIOUS VORTS EITHER SO THIS LENDS A BIT MORE
CONFIDENCE TO KEEPING THINGS ON THE DRY SIDE. THE GEM AND ECMWF
APPEAR TO HAVE AN OVERALL BETTER HANDLE ON THE VORT PATTERN
HEADING INTO WEDNESDAY NIGHT. SO GOING WITH COOLER AND DRIER
CONDITIONS WITH THE HIGH DOMINATING. ACTUALLY LOOKS NOW THAT THE
ANTICYCLONIC LOW LEVEL FLOW AND FEED OF DRY AIR WILL KEEP MUCH IF
NOT ALL OF THE CWA DRY THROUGH WEDNESDAY NIGHT. MAY HAVE A SMALL
POP IN THE FAR WEST LATER IN THE NIGHT.

.THURSDAY AND THURSDAY NIGHT - CONFIDENCE...MEDIUM
MID LEVEL RIDGE AXIS SHIFTS INTO THE EASTERN LAKES. ALL MODELS
SHOW A 500 MILLIBAR SHORTWAVE AFFECTING THE AREA THURSDAY
AFTERNOON/EVENING. DECENT WAA AND INFLUENCE OF 850 JET BECOMES
MORE OF A FACTOR THURSDAY NIGHT. MODEL QPF PROGS SHOW MORE
CONSENSUS FOR THE THURSDAY NIGHT PERIOD RATHER THAN THURSDAY
AFTERNOON. THERE IS ALSO A WEAK 250 JETLET PROGGD TO ENHANCE UPPER
DIVERGENCE A BIT THURSDAY NIGHT. GFS CAPES ARE NOT AS HIGH AS
PRIOR RUNS.

.FRIDAY - CONFIDENCE...LOW
THE ECMWF BRINGS IN WEAK SURFACE RIDGING AND BUILDING 500 HEIGHTS
AND SUBSEQUENT DRIER CONDITIONS. MEANWHILE THE GFS AND GEM STILL
SHOW LINGERING SURFACE/850 TROUGH AND ANOTHER 500 MILLIBAR SHORTWAVE.
WILL KEEP THE SUPERBLEND POPS IN PLACE FOR NOW.

.SATURDAY AND SUNDAY - CONFIDENCE...MEDIUM
GFS/ECMWF SHOW 588/591DM RIDGE BUILDING UP BRIEFLY ACROSS THE
AREA. EXPECTING A WARM AND HUMID PERIOD WITH 925 TEMPS INTO THE
MID 20S CELSIUS. SHORTWAVE ENERGY PROGGD TO COLLAPSE THE RIDGE
RIDING AROUND THE RIDGE MAY BRING SOME STORMS INTO SRN WI SATURDAY
NIGHT OR SUNDAY.

&&

.AVIATION/12Z TAFS/...LOOK FOR THE EARLY MORNING STRONG THUNDERSTORMS
TO MOVE OFF TO THE SOUTH AND EAST BY ABOUT 13-14Z...EARLIER AT KMSN.
MVFR AND SOME IFR CONDITIONS WILL BE AROUND THROUGH ABOUT THEN...THEN
CONDITIONS IMPROVE TO VFR LEVELS BY ABOUT MID AFTERNOON AND WILL
LIKELY CONTINUE THROUGH THE REMAINDER OF THE TAF PERIOD. WE ARE
EXPECTING REDEVELOPMENT OF SCATTERED THUNDERSTORMS LATER THIS
AFTERNOON AND INTO THE EVENING. AS ALWAYS...BRIEF MVFR CONDITIONS
ARE POSSIBLE IN AND AROUND THUNDERSTORMS.

&&

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

TODAY/TONIGHT AND AVIATION/MARINE...DAVIS
TUESDAY THROUGH SUNDAY...COLLAR

Hazardous weather outlook, Jul 12, 3:23 PM CDT, 12 hours 12 minutes before

HAZARDOUS WEATHER OUTLOOK...CORRECTED
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
323 PM CDT SUN JUL 12 2015

WIZ046-047-051-052-056>060-062>072-132030-
MARQUETTE-GREEN LAKE-FOND DU LAC-SHEBOYGAN-SAUK-COLUMBIA-DODGE-
WASHINGTON-OZAUKEE-IOWA-DANE-JEFFERSON-WAUKESHA-MILWAUKEE-
LAFAYETTE-GREEN-ROCK-WALWORTH-RACINE-KENOSHA-
323 PM CDT SUN JUL 12 2015

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

.DAY ONE...TONIGHT

A LINE OF SEVERE THUNDERSTORMS PRODUCING MAINLY STRAIGHT-LINE
WIND DAMAGE IS POSSIBLE LATE TONIGHT. THE STORM PREDICTION CENTER
HAS ALL OF SOUTHERN WISCONSIN IN A SLIGHT RISK FOR SEVERE
THUNDERSTORMS...AND A GREATER...ENHANCED AREA WEST OF A MONTELLO
TO MADISON TO JANESVILLE LINE. THE FAVORED WINDOW FOR THE SEVERE
THUNDERSTORMS IS EXPECTED MAINLY AFTER 2 AM.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SUNDAY

THERE IS AN ENHANCED RISK OF SEVERE THUNDERSTORMS SOUTH OF A
SPRING GREEN TO PORTAGE TO CEDARBURG LINE ON MONDAY. THERE IS A
SLIGHT RISK OF SEVERE STORMS TO THE NORTH.

THUNDERSTORMS MAY BE EXITING SOUTHERN WISCONSIN MONDAY MORNING.
ADDITIONAL THUNDERSTORMS ARE POSSIBLE DURING THE AFTERNOON WITH
THE RISK OF DAMAGING WINDS LARGE HAIL AND EVEN A TORNADO
POSSIBILITY.

HEAT INDEX VALUES MAY APPROACH 95...ESPECIALLY WEST AND SOUTH OF
MADISON MONDAY AFTERNOON.

THERE IS A CHANCE OF THUNDERSTORMS THROUGH TUESDAY...WITH
THUNDERSTORMS CHANCES RETURNING OFF AND ON FOR WEDNESDAY NIGHT
THROUGH SUNDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED LATE TONIGHT AND AGAIN MONDAY
AFTERNOON.

LMZ643>646-132030-
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-
323 PM CDT SUN JUL 12 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF LAKE MICHIGAN.

.DAY ONE...TONIGHT

A LINE OF SEVERE THUNDERSTORMS PRODUCING HIGH WINDS IS POSSIBLE
DURING THE EARLY MORNING HOURS.

MARINERS SHOULD ALSO BE PREPARED FOR AREAS OF FOG AS VERY MOIST
AIR CONTINUES TO MOVE INTO THE REGION.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SUNDAY

THERE IS AN ENHANCED RISK OF SEVERE THUNDERSTORMS SOUTH OF PORT
WASHINGTON. THERE IS A SLIGHT RISK OF SEVERE STORMS TO THE NORTH.

THUNDERSTORMS MAY BE EXITING THE LAKE MICHIGAN SHORE AREA MONDAY MORNING.
ADDITIONAL SEVERE THUNDERSTORMS ARE POSSIBLE DURING THE AFTERNOON.

THERE IS A CHANCE OF THUNDERSTORMS THROUGH TUESDAY...WITH
THUNDERSTORMS CHANCES RETURNING OFF AND ON FOR WEDNESDAY NIGHT
THROUGH SUNDAY.

HENTZ/MBK

WWW.WEATHER.GOV/MKX

In the hours before

Special weather statement, Jul 13, 1:53 AM CDT, 1 hour 42 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
153 AM CDT MON JUL 13 2015

WIZ046-047-051-056>058-062>064-067-130815-
JEFFERSON-SAUK-FOND DU LAC-LAFAYETTE-IOWA-GREEN
LAKE-COLUMBIA-DODGE-MARQUETTE-DANE-
153 AM CDT MON JUL 13 2015

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT IOWA...SAUK...
COLUMBIA...GREEN LAKE...NORTHWESTERN JEFFERSON...MARQUETTE...DODGE...
DANE...NORTHERN LAFAYETTE AND WESTERN FOND DU LAC COUNTIES...

AT 151 AM CDT...A LINE OF STRONG THUNDERSTORMS WAS ALONG A LINE
EXTENDING FROM 13 MILES EAST OF MEDFORD TO 11 MILES EAST OF MILLSTON
TO NEAR RUSHFORD...AND MOVING SOUTHEAST AT ABOUT 35 MPH.

WINDS OF 30 TO 40 MPH AND DIME SIZE HAIL ARE POSSIBLE WITH THESE
STORMS.

THESE STORMS WILL BE NEAR...
  PORTAGE AROUND 250 AM CDT.
  PARDEEVILLE AROUND 255 AM CDT.
  RIO AROUND 300 AM CDT.
  CAMBRIA AROUND 305 AM CDT.
  FALL RIVER AROUND 310 AM CDT.
  COLUMBUS AND DODGEVILLE AROUND 315 AM CDT.

OTHER LOCATIONS IMPACTED BY THESE STORMS INCLUDE EAST BRISTOL...MOUNT
VERNON...PINE BLUFF...OXFORD...FOX LAKE...MERRIMAC...ENDEAVOR...
PLAIN...BURNETT AND MINNESOTA JUNCTION.

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 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

THESE STORMS MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

LAT...LON 4390 8888 4389 8841 4394 8840 4394 8836
      4320 8867 4280 9012 4299 9043 4320 9043
      4321 9029 4317 9019 4355 9019 4356 9031
      4364 9031 4364 8960 4398 8960 4398 8889
TIME...MOT...LOC 0651Z 307DEG 59KT 4509 9008 4420 9042 4385 9171

MBK

Special weather statement, Jul 13, 2:32 AM CDT, 1 hour 3 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
232 AM CDT MON JUL 13 2015

WIZ046-047-051-056>058-062-063-130830-
SAUK-FOND DU LAC-IOWA-GREEN LAKE-COLUMBIA-DODGE-MARQUETTE-DANE-
232 AM CDT MON JUL 13 2015

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT NORTHERN IOWA...SAUK...
COLUMBIA...GREEN LAKE...MARQUETTE...NORTHWESTERN DODGE...NORTHERN
DANE AND WEST CENTRAL FOND DU LAC COUNTIES...

AT 232 AM CDT...A LINE OF STRONG THUNDERSTORMS WAS ALONG A LINE
EXTENDING FROM NEAR RIB MOUNTAIN TO NEAR NEW LISBON TO NEAR SPRING
GROVE...AND MOVING SOUTHEAST AT 35 MPH.

WINDS IN EXCESS OF 40 MPH ARE POSSIBLE WITH THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
EASTERN MADISON...SUN PRAIRIE...MIDDLETON...WAUNAKEE...BARABOO...
PORTAGE...REEDSBURG...RIPON...WINDSOR...BERLIN...COLUMBUS...PRAIRIE
DU SAC...SAUK CITY...WISCONSIN DELLS...LAKE WISCONSIN...DEFOREST...
CROSS PLAINS...LODI...LAKE DELTON AND POYNETTE.

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 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

THESE STORMS MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

LAT...LON 4390 8889 4389 8879 4319 8912 4294 9043
      4320 9043 4321 9029 4317 9019 4355 9019
      4356 9031 4364 9031 4364 8960 4398 8960
      4398 8889
TIME...MOT...LOC 0732Z 312DEG 49KT 4491 8963 4385 9011 4357 9156

MBK

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 13, 1:53 AM CDT	Special Weather Statement	MKX	Columbia, Dane, Dodge, Fond du Lac, Green Lake, Iowa and 2 more	82 min
Jul 13, 2:32 AM CDT	Special Weather Statement	MKX	Columbia, Green Lake, Iowa, Marquette, Sauk	58 min
Jul 13, 2:41 AM CDT	Severe Thunderstorm Warning	MKX	Dodge, Fond du Lac, Sheboygan, Washington	34 min
Jul 13, 2:46 AM CDT	Severe Thunderstorm Warning	MKX	Columbia, Marquette, Sauk	59 min
Jul 13, 3:05 AM CDT	Flash Flood Warning	MKX	Columbia	3 hr
Jul 13, 3:28 AM CDT	Flash Flood Warning	MKX	Dodge	3 hr
Jul 13, 3:32 AM CDT	Areal Flood Advisory	MKX	Fond du Lac, Green Lake, Marquette	118 min
Jul 13, 3:52 AM CDT	Severe Thunderstorm Warning	MKX	Dane, Dodge, Green, Iowa, Jefferson, Lafayette and 1 more	53 min
Jul 13, 3:54 AM CDT	Special Marine Warning	MKX		2 hr
Jul 13, 4:08 AM CDT	Tornado Warning	MKX	Dodge	37 min
Jul 13, 4:22 AM CDT	Severe Thunderstorm Warning	MKX	Dodge, Fond du Lac, Sheboygan, Washington, Waukesha	38 min
Jul 13, 4:45 AM CDT	Severe Thunderstorm Warning	MKX	Green, Lafayette, Rock, Walworth	45 min
Jul 13, 4:52 AM CDT	Severe Thunderstorm Warning	MKX	Milwaukee, Ozaukee, Sheboygan	38 min
Jul 13, 5:03 AM CDT	Severe Thunderstorm Warning	MKX	Kenosha, Racine	57 min
Jul 13, 5:09 AM CDT	Severe Thunderstorm Warning	MKX	Washington, Waukesha	21 min
Jul 13, 5:54 AM CDT	Special Marine Warning	MKX		66 min
Jul 13, 4:38 PM CDT	Special Weather Statement	MKX	Sauk	37 min
Jul 13, 5:21 PM CDT	Special Weather Statement	MKX	Sauk	39 min
Jul 13, 6:05 PM CDT	Special Weather Statement	MKX	Sauk	40 min
Jul 13, 6:14 PM CDT	Severe Thunderstorm Warning	MKX	Iowa, Sauk	46 min
Jul 13, 6:26 PM CDT	Severe Thunderstorm Warning	MKX	Columbia, Sauk	49 min
Jul 13, 6:43 PM CDT	Tornado Warning	MKX	Iowa	32 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2015 Every severe thunderstorm warning in 2015

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.