Alert archive / Wisconsin / Tornado Warnings in 2010

Tornado Warning 14, NWS Green Bay, WI

July 20, 2010Shawano County, Wisconsin

NWS Green Bay, WI issued this tornado warning at Jul 20, 2010, 5:16 PM CDT for Shawano County, Wisconsin. It was in force for 29 min. 2 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 20, 2010, 5:16 PM CDT (22:16 UTC)
Expired: Jul 20, 2010, 5:45 PM CDT
In force: 29 min
Issued by: NWS Green Bay, WI
Area: Storm-based polygon

County Shawano County, WI

The radar

The Green Bay radar (KGRB), 84 km from the middle of the area, began a volume at 22:17 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 20, 5:17 PM CDT	TSTM WND DMG	Wittenberg, WI	POSSIBLE TORNADO. STATE HWY 45 CLOSED WITH NUMEROUS TREES AND SIGNS DOWN. POWER LINES DOWN IN CITY.
Jul 20, 5:30 PM CDT	HAIL 1.75	1 S Tilleda, WI	ALONG HWY 29 AND OLD 29.

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

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this tornado 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 20, 3:18 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 10.3 hours before the alert went out and 85 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: 879 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 0 m²/s²
0-3 km storm-relative helicity: 51 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.

193 
WFUS53 KGRB 202216
TORGRB
WIC115-202245-
/O.NEW.KGRB.TO.W.0014.100720T2216Z-100720T2245Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE GREEN BAY WI
516 PM CDT TUE JUL 20 2010

THE NATIONAL WEATHER SERVICE IN GREEN BAY HAS ISSUED A

* TORNADO WARNING FOR...
  SHAWANO COUNTY IN NORTHEAST WISCONSIN...

* UNTIL 545 PM CDT

* AT 512 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
  STORM WAS LOCATED NEAR WITTENBERG...OR 23 MILES SOUTH OF ANTIGO...
  AND MOVING EAST AT 40 MPH.

* LOCATIONS IMPACTED INCLUDE...
  SHEPLEY...WHITCOMB...TIGERTON...BOWLER...TILLEDA AND LYNDHURST.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 4474 8922 4483 8922 4492 8918 4483 8877
      4468 8890
TIME...MOT...LOC 2217Z 283DEG 36KT 4481 8912

$$

RDM

2 follow-up statements

343 
WWUS53 KGRB 202223
SVSGRB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
523 PM CDT TUE JUL 20 2010

WIC115-202245-
/O.CON.KGRB.TO.W.0014.000000T0000Z-100720T2245Z/
SHAWANO WI-
523 PM CDT TUE JUL 20 2010

...A TORNADO WARNING REMAINS IN EFFECT FOR SHAWANO COUNTY UNTIL 545
PM CDT...

AT 517 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS
STORM WAS LOCATED NEAR WITTENBERG...OR 24 MILES SOUTH OF 
ANTIGO...MOVING EAST AT 35 MPH. 

THIS DANGEROUS STORM WILL AFFECT MAINLY RURAL AREAS OF SHAWANO
COUNTY...INCLUDING THE FOLLOWING LOCATIONS TILLEDA...CAROLINE AND
LEOPOLIS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 4474 8922 4483 8922 4492 8918 4483 8877
      4468 8890
TIME...MOT...LOC 2222Z 283DEG 36KT 4480 8906

$$

RDM

772 
WWUS53 KGRB 202242
SVSGRB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
542 PM CDT TUE JUL 20 2010

WIC115-202251-
/O.EXP.KGRB.TO.W.0014.000000T0000Z-100720T2245Z/
SHAWANO WI-
542 PM CDT TUE JUL 20 2010

...THE TORNADO WARNING FOR SHAWANO COUNTY WILL EXPIRE AT 545 PM
CDT...

THE TORNADO THREAT HAS DIMINISHED...THEREFORE THE TORNADO WARNING HAS
EXPIRED. RADAR CONTINUES TO SHOW SOME ROTATION AND SPOTTERS ARE 
WATCHING THE STORMS. MANY REPORTS OF WIND DAMAGE AND LARGE HAIL HAS 
BEEN REPORTED WITH THIS STORM...AND A SEVERE THUNDERSTORM WARNING 
REMAINS IN EFFECT FOR THE AREA.


LAT...LON 4474 8922 4483 8922 4492 8918 4483 8877
      4468 8890
TIME...MOT...LOC 2241Z 283DEG 36KT 4476 8884

$$

RDM

What forecasters said that day

The local office's own words before this tornado 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 tornado warning went out at Jul 20, 2:47 PM CDT, 2 hours 29 minutes earlier.

Area forecast discussion, Jul 20, 2:47 PM CDT, 2 hours 29 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREEN BAY WI
247 PM CDT TUE JUL 20 2010

.SHORT TERM...TUESDAY AFTERNOON THROUGH WEDNESDAY. THE PATTERN OF
WESTERLY FLOW ALOFT WITH IMBEDDED SHORTWAVES CONTINUES FOR THIS
AFTERNOON INTO TONIGHT. CURRENT UPPER AIR ANALYSIS INDICATES SHRTWVS
IMPACTING THE FORECAST AREA. THE FIRST WAS ENTERING WI FM MN.
INITIAL STORMS IN THAT AREA BEING HELD BACK BY CLDS EARLIER IN THE
DAY...BUT SOME ORGANIZATION AND STRENGTHENING HAS OCCURRED
RECENTLY. CURRENT MESOANALYSIS INDICATES AN AREA OF LOW LEVEL
LAPSE RATES NEARING DRY ADIABATIC SO THERE WILL BE A WIND THREAT
WITH ANY STORMS COMING IN FM THE W. ADDITIONAL STORMS WERE
DEVELOPING SWD FROM UPPER MICHIGAN. LOW-LEVEL LAPSE RATES WERE
NOT AS IMPRESSIVE OVER THE FAR NE. THE 12Z RAOB AT GRB HAD A FZG
LEVEL AROUND 13000 FEET...BUT THAT SHOULD BE LOWERING AS MID-LVL
JET MVS IN FM THE W. WITH SBCAPE VALUES AT AROUND 1000 J/KG AND
MODERATE SHEAR WITH THE ASSOCIATED SHORTWAVE...SVR HAIL WL ALSO BE
A THREAT WITH ANY OF THE STORMS.

EXPECT EVENING STORMS TO END OR AT LEAST DIMINISH. THEN NEXT
SHRTWV WL ARRIVE LATE TNGT. THAT MAY BRING ADDITIONAL STORMS INTO
THE NW PART OF THE AREA LATE...SO KEPT CHC GOING THAT AREA. LOOKS
LIKE FORCING FM THAT FEATURE WL BE CONFINED TO THE N...SO KEPT
C/E-C WI DRY.

ONCE THE FINAL SHORTWAVE MAKES ITS WAY ACROSS THE NORTHERN PART OF
THE CWA ON WEDNESDAY MORNING...THE REST OF THE DAY SHOULD REMAIN DRY.
PARTLY CLOUDY SKIES SHOULD PREVAIL. WENT A LITTLE BIT LOWER ON MAX
TEMPS TOMORROW DUE TO THE FINAL SHORTWAVE NOT CLEARING UNTIL THE
LATE MORNING HOURS. ALSO LOWERED DEW POINTS DUE TO MIXING OUT
BEHIND THE WAVE.

.LONG TERM...WEDNESDAY NIGHT THROUGH NEXT TUESDAY.

LOW AMPLITUDE UPPER LEVEL FLOW WITH PLENTY OF FAST MOVING SHORT
WAVES WILL CONTINUE ACCORDING TO THE LATEST MODEL RUNS. TIMING OF
SHORT WAVES REMAINS THE MAIN CONCERN.

THERE SEEMS TO BE DECENT AGREEMENT EARLY IN THE PERIOD AS A WEAK
UPPER RIDGE AND SURFACE HIGH PRESSURE MOVE ACROSS THE REGION. HAVE
A DRY FORECAST GOING FOR WEDNESDAY NIGHT...BUT HAVE POPS RETURNING
FOR THURSDAY WITH A FRONTAL BOUNDARY PUSHING NORTH AS SURFACE LOW
PRESSURE AND AN UPPER LEVEL SHORT WAVE APPROACH WISCONSIN.
EXPECT ACTIVITY WITH THE FRONT STARTING ON THURSDAY. HAVE GONE WITH
LIKELY POPS FOR THURSDAY NIGHT AS LOW PRESSURE MOVES TO NORTHERN
MINNESOTA AND THE FORECAST AREA GETS INTO THE WARM SECTOR OF THE
SYSTEM. WENT WITH CHANCE POPS FRIDAY AND FRIDAY NIGHT AS A COLD
FRONT GETS DRAGGED THROUGH WISCONSIN AND THEN AN UPPER LEVEL
TROUGH MOVES INTO THE STATE. KEPT A SLIGHT CHANCE IN THE GRIDS ON
SATURDAY. HAD CONSIDERED CHANCE POPS BECAUSE THE SHORT WAVE AXIS
IS NOT EXPECTED TO BE THROUGH THE AREA BY 12Z SATURDAY...BUT
SLIGHT CHANCE FITS BETTER WITH SURROUNDING GRIDS. HAVE DRY WEATHER
FOR THE REST OF THE WEEKEND AND EARLY NEXT WEEK WITH HIGH PRESSURE
OVER THE REGION AND UPPER LEVEL RIDGE APPROACHING. HAVE CHANCE
POPS FOR NORTH CENTRAL AND CENTRAL WI ON MONDAY NIGHT WITH SLIGHT
CHANCE FOR THE REST OF THE AREA AS A COLD FRONT MAKES ITS WAY INTO
THE REGION. NOT REALLY MUCH UPPER SUPPORT WITH IT SO MAYBE COULD
HAVE LEFT IT OUT BUT MODELS INDICATED QPF...SO THERE IT IS. LOWERED
TO SLIGHT CHANCE FOR THE ENTIRE AREA ON TUESDAY AND TUESDAY NIGHT
DUE TO LOW FORECASTER CONFIDENCE IN THE LAST FEW PERIODS OF THE
FORECAST...AND SURROUNDING SLIGHT CHANCE POPS.
&&

.AVIATION...SKIES MAY CLR LATE TNGT. BUT WINDS...ESP AT THE TOP OF
THE BOUNDARY LAYER SHOULD BE STRONGER THAN YDA....SO FG POTENTIAL
IS LOWER. JUST WENT WITH MVFR FG FOR NOW.
&&

.GRB WATCHES/WARNINGS/ADVISORIES...
NONE.
&&

MARQUIS/JS/MG

Hazardous weather outlook, Jul 20, 3:51 PM CDT, 1 hour 25 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREEN BAY WI
351 PM CDT TUE JUL 20 2010

WIZ005-010>013-018>022-030-031-035>040-045-048>050-073-074-212100-
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-
351 PM CDT TUE JUL 20 2010

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

.DAY ONE...TONIGHT

SEVERE THUNDERSTORMS ARE POSSIBLE DURING THE LATE AFTERNOON AND
EVENING. THE PRIMARY RISK IS OF LARGE HAIL...BUT ISOLATED DAMAGING
WIND GUSTS AND HEAVY RAIN ARE ALSO POSSIBLE. THE GREATEST RISK OF
SEVERE STORMS IS BEFORE 900 PM.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

THUNDERSTORMS ARE POSSIBLE FROM THURSDAY THROUGH FRIDAY NIGHT.
THERE IS A SLIGHT RISK OF SEVERE STORMS THURSDAY AND THURSDAY
NIGHT ACROSS A SMALL PART OF CENTRAL WISCONSIN...MAINLY SOUTHWEST
OF A LINE FROM MEDFORD TO OSHKOSH. DAMAGING WINDS...LARGE HAIL AND
HEAVY RAINFALL ARE THE MAIN RISK WITH THESE STORMS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NEEDED FOR LATE THIS AFTERNOON AND EARLY THIS
EVENING.

LMZ521-522-541>543-212100-
THE BAY OF GREEN BAY SOUTH OF A LINE FROM CEDAR RIVER MI TO ROCK
ISLAND PASSAGE-LAKE MICHIGAN FROM WASHINGTON ISLAND TO SHEBOYGAN-
351 PM CDT TUE JUL 20 2010

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

.DAY ONE...TONIGHT

SEVERE THUNDERSTORMS ARE POSSIBLE LATE THIS AFTERNOON AND THIS
EVENING. THE PRIMARY RISK IS OF LARGE HAIL...BUT ISOLATED STRONG
WIND GUSTS AND HEAVY RAIN ARE ALSO POSSIBLE. THE GREATEST RISK OF
SEVERE STORMS IS BEFORE 900 PM.

PATCHY DENSE FOG IS POSSIBLE TONIGHT.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

THUNDERSTORMS ARE POSSIBLE THURSDAY THROUGH FRIDAY NIGHT. ALTHOUGH
SEVERE STORMS WILL BE POSSIBLE SOMEWHERE IN THE GREAT LAKES REGION
DURING THAT TIME FRAME...IT IS STILL UNCLEAR WHETHER THE RISK WILL
INCLUDE THE AREA. IN EITHER CASE...THE STORMS LATE THIS WEEK WILL
POSE A RISK OF ADDITIONAL HEAVY RAINFALL.

PATCHY DENSE FOG IS LIKELY AT TIMES.

JS/MG

In the hours before

Local storm report, Jul 20, 4:46 PM CDT, 30 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREEN BAY WI
446 PM CDT TUE JUL 20 2010

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

0430 PM     HAIL             WAUSAU                  44.96N 89.63W
07/20/2010  M0.88 INCH       MARATHON           WI   PUBLIC

            INTERSECTION OF TOURNEY ROAD AND TOWNLINE CITIZEN
            MEASURED WITH A RULER NICKEL SIZED HAIL.

&&

MARQUIS

Local storm report, Jul 20, 4:47 PM CDT, 29 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREEN BAY WI
447 PM CDT TUE JUL 20 2010

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

0420 PM     FLOOD            LITTLE CHICAGO          45.04N 89.84W
07/20/2010                   MARATHON           WI   AMATEUR RADIO

            LOCAL FLOODING REPORTED IN MARATHON COUNTY AT THE
            INTERSECTION OF 107 AND COUNTY ROAD A.

&&

MARQUIS

Local storm report, Jul 20, 4:55 PM CDT, 21 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREEN BAY WI
455 PM CDT TUE JUL 20 2010

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

0442 PM     HAIL             WAUSAU                  44.96N 89.63W
07/20/2010  E1.00 INCH       MARATHON           WI   TRAINED SPOTTER

            SPOTTER REPORTED IN DOWNTOWN WAUSAU QUARTER INCH HAIL.

&&

MARQUIS

Local storm report, Jul 20, 4:57 PM CDT, 19 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREEN BAY WI
457 PM CDT TUE JUL 20 2010

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

0456 PM     FLASH FLOOD      WAUSAU                  44.96N 89.63W
07/20/2010                   MARATHON           WI   BROADCAST MEDIA

            BRIDGE STREET AND 2ND AVENUE DOWNTOWN WAUSAU...MEDIA
            REPORTED CALL STALLED OUT IN ROAD DUE TO FLOODING.

&&

MARQUIS

Local storm report, Jul 20, 5:00 PM CDT, 16 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREEN BAY WI
500 PM CDT TUE JUL 20 2010

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

0420 PM     TSTM WND DMG     LITTLE CHICAGO          45.04N 89.84W
07/20/2010                   MARATHON           WI   AMATEUR RADIO

            INTERSECTION OF COUNTY ROAD A AND COUNTY ROAD O. GROVE OF
            PINE TREES 12 INCH IN DIAMETER TREES BLOWN ONTO ROAD WITH
            PARTS OF A GRAIN STORAGE UNIT.

&&

MARQUIS

Special weather statement, Jul 20, 5:14 PM CDT, 2 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
514 PM CDT TUE JUL 20 2010

WIZ013-021-073-074-210015-
NORTHERN MARINETTE-NORTHERN OCONTO-SOUTHERN MARINETTE-
SOUTHERN OCONTO-
INCLUDING THE CITY OF...CRIVITZ
514 PM CDT TUE JUL 20 2010

...SIGNIFICANT WEATHER ADVISORY...

AT 507 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
AN AREA OF THUNDERSTORMS OVER NORTHERN MARINETTE COUNTY AND
NORTHERN OCONTO COUNTY...THE STORMS WERE MOVING SOUTHEAST AROUND
25 MPH.

PENNY SIZE HAIL...WINDS GREATER THAN 40 MPH...FREQUENT CLOUD TO
GROUND LIGHTNING...BRIEF HEAVY DOWNPOURS...ARE POSSIBLE WITH THESE
STORMS.

LOCATIONS THAT MAY BE IMPACTED INCLUDE...
  CRIVITZ...             MCALLISTER...            HAYES...
  LENA...                PESHTIGO...              OCONTO...
  MARINETTE...           PORTERFIELD...           COLEMAN...

GUSTY WINDS MAY CAUSE SMALL OBJECTS SUCH AS TRASH BINS TO BLOW
AROUND. STAY AWAY FROM HIGH OBJECTS OUTDOORS SUCH AS TREES. SEEK
SHELTER IN A STURDY STRUCTURE UNTIL THIS STORM HAS PASSED.

MG

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 19, 7:13 PM CDT	Special Marine Warning	GRB		65 min
Jul 19, 7:14 PM CDT	Areal Flood Advisory	GRB	Brown, Calumet, Kewaunee, Manitowoc, Oconto, Shawano and 1 more	3 hr
Jul 20, 3:30 PM CDT	Severe Thunderstorm Warning	GRB	Lincoln, Marathon	60 min
Jul 20, 4:19 PM CDT	Severe Thunderstorm Warning	GRB	Marathon	56 min
Jul 20, 5:00 PM CDT	Severe Thunderstorm Warning	GRB	Marathon, Shawano, Waupaca	60 min
Jul 20, 5:54 PM CDT	Severe Thunderstorm Warning	GRB	Brown, Oconto, Outagamie, Shawano, Waupaca	51 min
Jul 20, 5:57 PM CDT	Severe Thunderstorm Warning	GRB	Portage, Waupaca	56 min
Jul 20, 6:43 PM CDT	Severe Thunderstorm Warning	GRB	Outagamie, Waupaca, Winnebago	47 min
Jul 20, 6:45 PM CDT	Severe Thunderstorm Warning	GRB	Brown, Outagamie	17 min

Nearby

Tornado Warnings in Wisconsin, 2010 Every tornado warning in 2010 Tornadoes in 2010

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.