Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 78, NWS Green Bay, WI

July 18, 2011Kewaunee County, Manitowoc County, Wisconsin

NWS Green Bay, WI issued this severe thunderstorm warning at Jul 18, 2011, 9:40 AM CDT for Kewaunee County, Manitowoc County, Wisconsin. It was in force for 38 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 18, 2011, 9:40 AM CDT (14:40 UTC)
Expired: Jul 18, 2011, 10:18 AM CDT
In force: 38 min
Issued by: NWS Green Bay, WI
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Kewaunee County, WI, Manitowoc County, WI

The radar

The Green Bay radar (KGRB), 36 km from the middle of the area, began a volume at 14:42 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

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
Jul 18, 8:05 AM CDT	Severe Thunderstorm Watch	SPC	4 hr

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 2.7 hours before the alert went out and 34 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: 3928 J/kg
Mixed-layer CIN: -31 J/kg
Mixed-layer LCL: 613 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 106 m²/s²
0-3 km storm-relative helicity: 111 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 9.7

Open this sounding in Storm Lab

The text

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

954 
WUUS53 KGRB 181440
SVRGRB
WIC061-071-181530-
/O.NEW.KGRB.SV.W.0078.110718T1440Z-110718T1530Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GREEN BAY WI
940 AM CDT MON JUL 18 2011

THE NATIONAL WEATHER SERVICE IN GREEN BAY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  KEWAUNEE COUNTY IN NORTHEAST WISCONSIN...
  NORTHERN MANITOWOC COUNTY IN EAST CENTRAL WISCONSIN...

* UNTIL 1030 AM CDT

* AT 937 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH.  THIS STORM WAS LOCATED 8 MILES WEST OF DENMARK...OR 11
  MILES SOUTH OF GREEN BAY...AND MOVING EAST AT 40 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  COOPERSTOWN AROUND 950 AM CDT.
  KEWAUNEE AROUND 1000 AM CDT. 
  TWO CREEKS AROUND 1005 AM CDT.

OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE
ROSECRANS...MARIBEL...COOPERSTOWN...LARRABEE...STANGELVILLE...TISCH
MILLS AND NORMAN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...LARGE HAIL...AND DEADLY
LIGHTNING. FOR YOUR PROTECTION...MOVE TO AN INTERIOR ROOM ON THE
LOWEST FLOOR OF YOUR HOME OR BUSINESS.

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD
TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

&&

LAT...LON 4411 8805 4424 8804 4424 8789 4429 8789
      4433 8786 4433 8777 4466 8776 4468 8774
      4468 8737 4454 8747 4433 8753 4429 8753
      4423 8750 4417 8752 4411 8762
TIME...MOT...LOC 1438Z 275DEG 29KT 4435 8798
WIND...HAIL 60MPH <.75IN

$$

ECKBERG

2 follow-up statements

292 
WWUS53 KGRB 181504
SVSGRB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
1004 AM CDT MON JUL 18 2011

WIC061-181514-
/O.CAN.KGRB.SV.W.0078.000000T0000Z-110718T1530Z/
KEWAUNEE WI-
1004 AM CDT MON JUL 18 2011

...THE SEVERE THUNDERSTORM WARNING FOR KEWAUNEE COUNTY IS
CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED ACROSS THE
WARNED AREA.

LAT...LON 4422 8782 4426 8778 4433 8753 4429 8753
      4423 8750 4417 8752 4411 8762
TIME...MOT...LOC 1504Z 272DEG 31KT 4422 8767

$$

WIC071-181530-
/O.CON.KGRB.SV.W.0078.000000T0000Z-110718T1530Z/
MANITOWOC WI-
1004 AM CDT MON JUL 18 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHEASTERN
MANITOWOC COUNTY UNTIL 1030 AM CDT...

AT 1002 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF
60 MPH.  THIS STORM WAS LOCATED 8 MILES SOUTHWEST OF TWO CREEKS...OR
10 MILES NORTH OF MANITOWOC...MOVING EAST AT 35 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  TWO CREEKS AROUND 1015 AM CDT.

OTHER LOCATIONS IMPACTED BY THE SEVERE THUNDERSTORM INCLUDE TWO
RIVERS AND POINT BEACH STATE FOREST.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...LARGE HAIL...AND DEADLY
LIGHTNING. FOR YOUR PROTECTION...MOVE TO AN INTERIOR ROOM ON THE
LOWEST FLOOR OF YOUR HOME OR BUSINESS.

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD
TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

&&

LAT...LON 4422 8782 4426 8778 4433 8753 4429 8753
      4423 8750 4417 8752 4411 8762
TIME...MOT...LOC 1504Z 272DEG 31KT 4422 8767
WIND...HAIL 60MPH <.75IN

$$

ECKBERG

971 
WWUS53 KGRB 181518
SVSGRB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
1018 AM CDT MON JUL 18 2011

WIC071-181528-
/O.CAN.KGRB.SV.W.0078.000000T0000Z-110718T1530Z/
MANITOWOC WI-
1018 AM CDT MON JUL 18 2011

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN MANITOWOC COUNTY
IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.

LAT...LON 4422 8782 4426 8778 4433 8753 4429 8753
      4423 8750 4417 8752 4411 8762
TIME...MOT...LOC 1518Z 272DEG 31KT 4422 8750

$$

ECKBERG

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 Green Bay, WI wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 18, 4:35 AM CDT, 5 hours 5 minutes earlier.

Area forecast discussion, Jul 18, 4:35 AM CDT, 5 hours 5 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREEN BAY WI
435 AM CDT MON JUL 18 2011

.SHORT TERM...TODAY THROUGH TUESDAY. THE CONVECTION THAT MOVED
THROUGH LAST NIGHT PRODUCED WINDS DAMAGE ACROSS NORTHERN WISCONSIN
BUT DID PROVIDE SOME BRIEF RELIEF FROM THE HEAT YESTERDAY AFTERNOON.
WHILE TEMPERATURES HAVE FALLEN INTO THE 60S AND LOW 70S EARLY
TODAY THERE IS VERY WARM AIR JUST ABOVE THE GROUND. ONCE THE
CLOUDS BREAK UP AND WE GET SOME MIXING THE TEMPERATURES WILL
BEGIN TO RISE QUICKLY. THE CONVECTIVE COMPLEX MIXED DOWN SOME
SLIGHTLY DRIER AIR TO THE SURFACE BUT 70S DEW POINTS ARE NOT FAR
UPSTREAM TO THE SOUTH AND WEST AND WILL RETURN QUICKLY.
TEMPERATURES IN THE 90S AND DEW POINTS IN THE 70S WILL PRODUCE HEAT
INDICES OF 100 TO 110 OVER ALL BUT THE LAKESHORE AREAS TODAY. THE
PAST SEVERAL DAYS AND THE REMAINDER OF THIS WEEK SHOULD BE A GREAT
TIME TO GO TO THE DOOR PENINSULA TO ESCAPE THE HEAT.

SCATTERED SHOWERS AND THUNDERSTORMS STILL POSSIBLE THIS AFTERNOON
AS WEAK SURFACE LOW OVER MINNESOTA MOVES EAST INTO WISCONSIN. AS
IT MOVES EAST OF THE REGION TONIGHT WINDS WILL SWING TO THE NORTH
FOR AWHILE AND TRY TO BRING DOWN SLIGHTLY COOLER AND DRIER AIR FOR
TUESDAY AS A WEAK HIGH MOVES ACROSS NORTHERN WISCONSIN.
COOLER AND DRIER IS ONLY IN A RELATIVE SENSE AS IT WILL STILL BE
WELL ABOVE SEASONAL LEVELS.

.LONG TERM...TUESDAY NIGHT THROUGH SUNDAY.

HOT AND HUMID CONDITIONS AND THE CHANCE FOR THUNDERSTORMS ARE THE
MAIN CONCERNS DURING THIS PART OF THE FORECAST.

LATEST MODEL RUNS INDICATED A BREAKDOWN OF THE UPPER RIDGE BY THE
END OF THE WEEK. THIS SHOULD BRING SOME COOLER TEMPERATURES TO THE
FORECAST AREA BY THEN.

DIFFICULT TO TELL WHEN AND WHERE TO INCLUDE POPS. HAVE LEFT THEM
AS CLOSE TO THE PREVIOUS FORECAST AS POSSIBLE SINCE THERE DID NOT
SEEM TO BE A GOOD ENOUGH REASON TO MAKE CHANGES.

USED A MIX OF GUIDANCE AND THE PREVIOUS FORECAST FOR TEMPERATURES
DURING THE PERIOD.
&&

.AVIATION...VARIABLE CIGS AND VSBYS EARLY TODAY DUE TO CLOUDS AND
SCATTERED SHOWERS. SHOULD GENERALLY BECOME VFR THIS AFTERNOON AND
EVENING THOUGH THERE MAY BE HAZE IN THE AIR DUE TO HIGH MOISTURE
CONTENT.
&&

.GRB WATCHES/WARNINGS/ADVISORIES...
EXCESSIVE HEAT WARNING UNTIL 7 PM CDT THURSDAY FOR WIZ020-030-
031-035>039-045-048-049.

HEAT ADVISORY UNTIL 7 PM CDT THIS EVENING FOR WIZ005-010>013-018-
019-021-073-074.

&&

RDM/MG

Hazardous weather outlook, Jul 18, 6:15 AM CDT, 3 hours 25 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREEN BAY WI
615 AM CDT MON JUL 18 2011

WIZ005-010>013-018>022-030-031-035>040-045-048>050-073-074-191115-
VILAS-ONEIDA-FOREST-FLORENCE-NORTHERN MARINETTE-LINCOLN-LANGLADE-
MENOMINEE-NORTHERN OCONTO-DOOR-MARATHON-SHAWANO-WOOD-PORTAGE-
WAUPACA-OUTAGAMIE-BROWN-KEWAUNEE-WAUSHARA-WINNEBAGO-CALUMET-
MANITOWOC-SOUTHERN MARINETTE-SOUTHERN OCONTO-
615 AM CDT MON JUL 18 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL AND NORTHEAST
WISCONSIN.

.DAY ONE...TODAY AND TONIGHT

TEMPERATURES IN THE 90S AND DEW POINTS IN THE 70S WILL CREATE HEAT
INDICES OF 100 TO 110 THIS AFTERNOON OVER ALL BUT THE LAKESHORE
AREAS. THIS HEAT CAN BE DANGEROUS FOR PEOPLE WHO EXERT THEMSELVES
OUTDOORS...AND POSSIBLY FOR THOSE IN RESIDENCES WITHOUT AIR
CONDITIONING.

IN ADDITION TO THE HEAT...SCATTERED THUNDERSTORMS ARE EXPECTED
TODAY THROUGH THIS EVENING. THERE IS A SLIGHT CHANCE THAT SOME OF
THESE COULD PRODUCE DAMAGING WINDS.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

A HAZARDOUS COMBINATION OF HEAT AND HUMIDITY IS LIKELY FOR ALL OR
PART OF THE PERIOD FROM TUESDAY THROUGH FRIDAY. HIGH TEMPERATURES IN
THE 90S AND DEW POINTS IN THE 70S WILL PRODUCE HEAT INDICES OVER
100 DEGREES ON SOME OR ALL OF THESE DAYS.

THOSE RESPONSIBLE FOR CONSTRUCTION CREWS AND LARGE OUTDOOR EVENTS
SHOULD MAKE PLANS FOR PROVIDING SHADE...WATER AND PLACES FOR
PEOPLE TO COOL OFF. THOSE CARING FOR THE ELDERLY AND DISABLED
SHOULD ENSURE THEY ARE NOT ENDANGERED BY THE UPCOMING HOT WEATHER.

THERE IS A CHANCE OF THUNDERSTORMS FROM TIME TO TIME TUESDAY THROUGH
SATURDAY. IT IS TOO EARLY TO DETERMINE WHEN AND WHERE SEVERE WEATHER
WOULD OCCUR.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS POSSIBLE...THOUGH NOT LIKELY TODAY OR
TONIGHT.

LMZ521-522-541>543-191115-
THE BAY OF GREEN BAY SOUTH OF A LINE FROM CEDAR RIVER MI TO ROCK
ISLAND PASSAGE-LAKE MICHIGAN FROM WASHINGTON ISLAND TO SHEBOYGAN-
615 AM CDT MON JUL 18 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHWEST LAKE
MICHIGAN AND THE WATERS OF GREEN BAY.

.DAY ONE...TODAY AND TONIGHT

PATCHY DENSE FOG CAN BE EXPECTED OVER THE COASTAL WATERS OF LAKE
MICHIGAN AS A WARM AND HUMID AIR MOVES OVER THE COLDER WATERS. IN
ADDITION TO THE POSSIBLE FOG...SCATTERED THUNDERSTORMS COULD
PRODUCE STRONG WINDS TODAY AND TONIGHT.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

DENSE MARINE FOG WILL OCCUR FROM TIME TO TIME ACROSS THE COASTAL
WATERS OF LAKE MICHIGAN THROUGH MUCH OF THE WEEK. VERY WARM AND
HUMID AIR WILL REMAIN OVER THE COOLER WATERS OF LAKE MICHIGAN. THE
FOG IS USUALLY MOST DENSE WHERE THE WATER IS COLDEST AND WHEN
WINDS ARE LIGHT.

THERE IS A CHANCE OF THUNDERSTORMS FROM TIME TO TIME TUESDAY THROUGH
SATURDAY. IT IS TOO EARLY TO DETERMINE WHEN AND WHERE SEVERE
WEATHER WOULD OCCUR.

In the hours before

Local storm report, Jul 18, 8:42 AM CDT, 58 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREEN BAY WI
842 AM CDT MON JUL 18 2011

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

0822 AM     TSTM WND GST     PLOVER                  44.45N 89.53W
07/18/2011  M70 MPH          PORTAGE            WI   CO-OP OBSERVER

            ALSO BRIEF PERIOD OF PEA SIZE HAIL. 0.78 INCH RAINFALL IN
            30 MINUTES.

&&

Local storm report, Jul 18, 8:58 AM CDT, 42 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREEN BAY WI
858 AM CDT MON JUL 18 2011

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

0843 AM     TSTM WND DMG     3 S WAUPACA             44.30N 89.06W
07/18/2011                   WAUPACA            WI   LAW ENFORCEMENT

            NUMEROUS TREES DOWN ON HIGHWAYS K AND E SOUTH OF THE CITY
            OF WAUPACA.

&&

Special weather statement, Jul 18, 9:10 AM CDT, 30 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
910 AM CDT MON JUL 18 2011

WIZ022-037-039-040-049-050-074-181515-
BROWN-CALUMET-DOOR-KEWAUNEE-MANITOWOC-SOUTHERN OCONTO COUNTY-WAUPACA-
910 AM CDT MON JUL 18 2011

...THUNDERSTORMS APPROACHING GREEN BAY AND FAR EAST-CENTRAL
WISCONSIN...

AT 903 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE FROM PELLA IN SHAWANO COUNTY TO
GREENVILLE IN OUTAGAMIE COUNTY. THE STORMS WERE MOVING EAST AT 50
MPH.

WINDS OVER 50 MPH...FREQUENT CLOUD TO GROUND LIGHTNING...AND BRIEF
HEAVY DOWNPOURS ARE POSSIBLE WITH THESE STORMS.

* THUNDERSTORMS WILL BE NEAR...
  GREEN BAY AND BRILLION BY 940 AM CDT...
  DENMARK BY 950 AM CDT...
  LUXEMBURG BY 1000 AM CDT...
  MANITOWOC BY 1005 AM CDT...
  TWO CREEKS AND KEWAUNEE BY 1010 AM CDT...

GUSTY WINDS MAY CAUSE TREE BRANCHES TO BE BLOWN DOWN...AND LOOSE
OBJECTS TO BLOW AROUND. STAY AWAY FROM HIGH OBJECTS OUTDOORS SUCH AS
TREES. SEEK SHELTER IN A STURDY STRUCTURE UNTIL THESE STORMS HAVE
PASSED.

JKL

Local storm report, Jul 18, 9:26 AM CDT, 14 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREEN BAY WI
926 AM CDT MON JUL 18 2011

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

0918 AM     TSTM WND DMG     3 W MENASHA             44.20N 88.50W
07/18/2011                   WINNEBAGO          WI   PUBLIC

            DAMAGE TO BUILDING, CARS FLIPPED AT HIGHWAYS 76 AND 10.
            TIME ESTIMATED.

&&

Local storm report, Jul 18, 9:31 AM CDT, 9 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREEN BAY WI
931 AM CDT MON JUL 18 2011

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

0927 AM     TSTM WND GST     2 W DE PERE             44.45N 88.09W
07/18/2011  M53 MPH          BROWN              WI   MESONET

            WEST DE PERE HIGH SCHOOL.

0915 AM     TSTM WND GST     3 N DALE                44.30N 88.68W
07/18/2011  M56 MPH          OUTAGAMIE          WI   AMATEUR RADIO

&&

Local storm report, Jul 18, 9:32 AM CDT, 8 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREEN BAY WI
932 AM CDT MON JUL 18 2011

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

0925 AM     TSTM WND DMG     1 N APPLETON            44.27N 88.40W
07/18/2011                   OUTAGAMIE          WI   LAW ENFORCEMENT

            NEAR BALLARD AND JJ...POWER LINES IN TREES AND BLOWN
            TRANSFORMER.

&&

BERSCH

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 17, 7:05 PM CDT	Flash Flood Warning	GRB	Vilas	3 hr
Jul 17, 7:15 PM CDT	Severe Thunderstorm Warning	GRB	Oneida, Vilas	54 min
Jul 17, 7:51 PM CDT	Severe Thunderstorm Warning	GRB	Langlade, Lincoln, Oneida	54 min
Jul 17, 7:51 PM CDT	Severe Thunderstorm Warning	GRB	Florence, Forest, Marinette	39 min
Jul 17, 8:30 PM CDT	Severe Thunderstorm Warning	GRB	Florence, Forest, Marinette, Oconto	75 min
Jul 17, 8:40 PM CDT	Severe Thunderstorm Warning	GRB	Langlade, Marathon, Menominee, Shawano	50 min
Jul 17, 8:49 PM CDT	Special Marine Warning	GRB		116 min
Jul 17, 9:08 PM CDT	Severe Thunderstorm Warning	GRB	Marinette, Oconto, Shawano	52 min
Jul 17, 9:26 PM CDT	Severe Thunderstorm Warning	GRB	Marathon, Portage, Shawano, Waupaca	64 min
Jul 17, 9:30 PM CDT	Severe Thunderstorm Warning	GRB	Menominee	22 min
Jul 17, 9:40 PM CDT	Severe Thunderstorm Warning	GRB	Brown, Outagamie	65 min
Jul 17, 9:48 PM CDT	Special Marine Warning	GRB		117 min
Jul 17, 10:12 PM CDT	Severe Thunderstorm Warning	GRB	Door, Kewaunee	63 min
Jul 17, 10:12 PM CDT	Severe Thunderstorm Warning	GRB	Waushara, Winnebago	54 min
Jul 17, 10:24 PM CDT	Severe Thunderstorm Warning	GRB	Calumet, Manitowoc	66 min
Jul 18, 6:57 AM CDT	Severe Thunderstorm Warning	GRB	Wood	48 min
Jul 18, 7:41 AM CDT	Severe Thunderstorm Warning	GRB	Portage, Wood	49 min
Jul 18, 8:14 AM CDT	Severe Thunderstorm Warning	GRB	Portage, Waupaca	46 min
Jul 18, 8:19 AM CDT	Severe Thunderstorm Warning	GRB	Waushara	41 min
Jul 18, 8:46 AM CDT	Severe Thunderstorm Warning	GRB	Outagamie, Winnebago	59 min
Jul 18, 9:03 AM CDT	Severe Thunderstorm Warning	GRB	Shawano, Waupaca	39 min
Jul 18, 9:10 AM CDT	Special Marine Warning	GRB		2 hr
Jul 18, 9:15 AM CDT	Severe Thunderstorm Warning	GRB	Brown, Calumet	45 min
Jul 18, 10:43 AM CDT	Severe Thunderstorm Warning	GRB	Door	23 min
Jul 18, 11:05 AM CDT	Severe Thunderstorm Warning	GRB	Marinette, Oconto	50 min
Jul 18, 11:36 AM CDT	Special Marine Warning	GRB		41 min
Jul 18, 2:11 PM CDT	Severe Thunderstorm Warning	GRB	Forest	49 min
Jul 18, 2:27 PM CDT	Severe Thunderstorm Warning	GRB	Oneida, Vilas	32 min
Jul 18, 2:57 PM CDT	Severe Thunderstorm Warning	GRB	Forest	33 min
Jul 18, 5:20 PM CDT	Severe Thunderstorm Warning	GRB	Outagamie, Shawano, Waupaca	40 min
Jul 18, 5:56 PM CDT	Severe Thunderstorm Warning	GRB	Outagamie, Waupaca, Waushara, Winnebago	64 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2011 Every severe thunderstorm warning in 2011

Sources

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