Another upper-level disturbance produced scattered severe thunderstorms over south central Wisconsin during the morning on June 19th. These storms produced damaging winds in Lafayette and Green Counties.
Every event with a place to put it. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS MKX wrote it up.
Another upper-level disturbance produced scattered severe thunderstorms over south central Wisconsin during the morning on June 19th. These storms produced damaging winds in Lafayette and Green Counties.
The local office's own words before the first event, 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 the first event at Jun 19, 3:00 AM CST, 4 hours 55 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 400 AM CDT FRI JUN 19 2009 .DISCUSSION...FORECAST FOCUS ON CONVECTIVE TIMING AND SEVERITY TODAY INTO THIS EVENING...THEN PATTERN SHIFTS TO GENERALLY QUIET WITH A FEW WRINKLES HERE AND THERE. TODAY- WHILE OVERNIGHT STORMS LARGELY WAA INDUCED WITH 850 FORCING...WHICH IS PROGGD TO WANE TOWARDS 12Z AS LOW LEVEL JET DIMINISHES. ONE LAST GASP OF THIS COMING ACROSS THE SOUTHERN TWO TIERS OF COUNTIES. THE TRIGGER TODAY WILL BE THE SHORTWAVE TROUGH THAT LOOKS FAIRLY NEGATIVE TILTED AS IT APPROACHES. ALREADY SIGNS OF THIS WITH CONVECTION BLOSSOMING ACROSS NEBRASKA MOVING INTO WESTERN IOWA. RATHER IMPRESSED WITH THE 200-300 MILLIBAR SPEED MAX THAT ROUNDS THE BASE OF THE WAVE AND AIMS RIGHT INTO OUR CWA THIS AFTERNOON. CAPE VALUES FROM BOTH THE NAM AND GFS EXCEED 2000 J/KG...AND AT THE MOMENT...DO NOT SEE EXTENSIVE ENOUGH LOW CLOUD COVER UPSTREAM TO BE TOO CONCERNED ABOUT A SIGNIFICANT LOSS IN PROGGD CAPE. ONGOING CONVECTION LIKELY TO KEEP THE WARM FRONT SHUNTED SOUTH FOR A TIME...BUT FEEL ENOUGH MOMENTUM WILL EASILY CARRY IT BACK TO THE NORTH ALLOWING FOR WARM TEMPS AND TROPICAL DEW POINTS IN THE 70S TO SNEAK BACK INTO THE CWA. GIVEN ABUNDANT RAINFALL WHICH FELL FROM THESE OVERNIGHT STORMS...CONCERNED ABOUT ADDITIONAL FLOODING. FOR NOW WILL HOLD OFF BASED ON COORD WITH SURROUNDING OFFICES AND WITH SOME QUESTION OF PLACEMENT OF HEAVIEST QPF. TONIGHT- 850-500 MILLIBAR TROUGH AXES SHIFT EAST OF THE AREA AROUND OR SHORTLY AFTER MIDNIGHT...THUS WILL ELMINATE POPS AFTER 6Z...GFS AND NAM BOTH HAVE THE DRY LOOK. SATURDAY- DRY ANTICYCLONIC FLOW WILL MAKE FOR A PLEASANT DAY. SUNDAY- MODELS DIVERGE A BIT WITH NAM/ECMWF/CANADIAN SHOWING INCREASING WAA PATTERN AND QPF AFFECTING THE CWA INTO SUNDAY NIGHT. THIS DUE TO THE APPROACH OF NORTHERN PLAINS UPPER TROUGH. MEANWHILE THE GFS SHOWS WEAK VORTS SPILLING SOUTHEAST ACROSS THE AREA ON THE PERIPHERY OF LOOSELY DEFINED UPPER RIDGE AXIS. KEEPING THE SLIGHT CHANCE GOING DOESNT SEEM TO BE A BAD WAY TO GO AT THIS POINT GIVEN THE MIXED SIGNALS. MONDAY- THE WAA SIGNAL WITH A WEAK RIPPLE MAKES FOR A CONTINUED SLIGHT CHANCE OF TSTORMS. ALL MODELS IN AGREEMENT WITH THIS EXCEPT THE GFS. TUESDAY- UPPER RIDGE BUILDING ACROSS. INCREASED ANTICYCLONIC FLOW. 850 RIDGE AXIS TO OUR WEST. SURFACE RIDGE POSITION SUGGESTS A SE COMPONENT. && .AVIATION...PERIODS OF SHOWERS AND TSTORMS WILL CONTINUE OVER SRN WI TODAY AND TNT AS A SHORTWAVE TROUGH AND LOW PRESSURE AREA MOVE ACROSS THE REGION ONCE AGAIN. AREAS OF MVFR CIGS AND VSBYS ARE EXPECTED THROUGHOUT THE DAY AND NIGHT BUT WILL BECOME IFR IN THE MORE INTENSE TSTORMS. && .MKX WATCHES/WARNINGS/ADVISORIES... WI...NONE. LM...NONE. && SHORT/LONG TERM...COLLAR AVIATION/MARINE...GEHRING
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 538 AM CDT FRI JUN 19 2009 WIZ046-047-051-052-056>060-062>072-201045- MARQUETTE-GREEN LAKE-FOND DU LAC-SHEBOYGAN-SAUK-COLUMBIA-DODGE- WASHINGTON-OZAUKEE-IOWA-DANE-JEFFERSON-WAUKESHA-MILWAUKEE- LAFAYETTE-GREEN-ROCK-WALWORTH-RACINE-KENOSHA- 538 AM CDT FRI JUN 19 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EAST CENTRAL WISCONSIN...SOUTH CENTRAL WISCONSIN AND SOUTHEAST WISCONSIN. .DAY ONE...TODAY AND TONIGHT THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS AS A STRONG STATIONARY FRONT REMAINS IN THE VICINITY OF SOUTHERN WISCONSIN WHILE LOW PRESSURE AND A COLD FRONT WILL ARRIVE LATE THIS AFTERNOON AND EVENING. LARGE HAIL AND DAMAGING WINDS ARE ONCE AGAIN EXPECTED. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY SMALL CHANCES OF THUNDERSTORMS WILL BE POSSIBLE AGAIN SUNDAY...MONDAY...WEDNESDAY NIGHT AND THURSDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED TODAY OR TONIGHT. LMZ643>646-201045- 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- 538 AM CDT FRI JUN 19 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF LAKE MICHIGAN. .DAY ONE...TODAY AND TONIGHT THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS AS A STRONG STATIONARY FRONT REMAINS IN THE VICINITY OF SOUTHERN WISCONSIN WHILE LOW PRESSURE AND A COLD FRONT WILL ARRIVE LATE THIS AFTERNOON AND EVENING. LARGE HAIL AND DAMAGING WINDS ARE ONCE AGAIN EXPECTED. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY SMALL CHANCES OF THUNDERSTORMS WILL BE POSSIBLE AGAIN SUNDAY...MONDAY...WEDNESDAY NIGHT AND THURSDAY. WWW.WEATHER.GOV/MKX GEHRING
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
702 AM CDT FRI JUN 19 2009
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0700 AM HEAVY RAIN 2 N WATERTOWN 43.22N 88.72W
06/19/2009 M4.10 INCH DODGE WI PUBLIC
OVERNIGHT RAIN TOTAL
0700 AM HEAVY RAIN 2 NE STURTEVANT 42.72N 87.87W
06/19/2009 M1.90 INCH RACINE WI PUBLIC
OVERNIGHT RAIN TOTAL
&&
SCHAARSPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 802 AM CDT FRI JUN 19 2009 WIZ069-070-191400- ROCK-WALWORTH- 802 AM CDT FRI JUN 19 2009 ...STRONG THUNDERSTORM MOVING THOUGH SOUTHERN ROCK COUNTY... AT 800 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 10 MILES WEST OF BELOIT...MOVING EAST NORTHEAST AT 35 MPH. PENNY SIZE HAIL...WINDS UP TO 50 MPH...BRIEF HEAVY DOWNPOURS...ARE POSSIBLE WITH THIS STORM. * THE THUNDERSTORM WILL BE NEAR... BELOIT BY 815 AM CDT... CLINTON BY 830 AM CDT... SHARON BY 840 AM CDT... DARIEN BY 845 AM CDT... DELAVAN LAKE AND WILLIAMS BAY BY 855 AM CDT... GUSTY WINDS MAY CAUSE BRANCHES AND A TREE OR TWO TO BE BLOWN DOWN...AND LOOSE OBJECTS TO BLOW AROUND. SEEK SHELTER IN A STURDY STRUCTURE UNTIL THIS STORM HAS PASSED.
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 812 AM CDT FRI JUN 19 2009 WIZ070-072-191400- KENOSHA-WALWORTH- 812 AM CDT FRI JUN 19 2009 ...STRONG THUNDERSTORM MOVING THROUGH SOUTHERN WALWORTH COUNTY... AT 812 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 20 MILES WEST OF TWIN LAKES...MOVING EAST-NORTHEAST AT 35 MPH. NICKEL SIZE HAIL...WINDS UP TO 50 MPH...OCCASIONAL CLOUD TO GROUND LIGHTNING...BRIEF HEAVY DOWNPOURS...ARE POSSIBLE WITH THIS STORM. * THE THUNDERSTORM WILL BE NEAR... SOUTH OF FONTANA-ON-GENEVA LAKE BY 820 AM CDT... PELL LAKE AND GENOA CITY BY 835 AM CDT... POWERS LAKE AND TWIN LAKES BY 840 AM CDT... SILVER LAKE AND CAMP LAKE BY 850 AM CDT... GUSTY WINDS MAY CAUSE BRANCHES AND A TREE OR TWO 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 THIS STORM HAS PASSED. KAPELA
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 820 AM CDT FRI JUN 19 2009 WIZ069-070-191345- ROCK-WALWORTH- 820 AM CDT FRI JUN 19 2009 ...STRONG THUNDERSTORM MOVING THROUGH SOUTHERN ROCK COUNTY... AT 817 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM NEAR BELOIT...MOVING EAST NORTHEAST AT 35 MPH. PENNY SIZE HAIL...WINDS UP TO 50 MPH...OCCASIONAL CLOUD TO GROUND LIGHTNING...BRIEF HEAVY DOWNPOURS...ARE POSSIBLE WITH THIS STORM. * THE THUNDERSTORM WILL BE NEAR... CLINTON BY 835 AM CDT... DARIEN AND SHARON BY 845 AM CDT... GUSTY WINDS MAY CAUSE BRANCHES AND A TREE OR TWO 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 THIS STORM HAS PASSED. KAPELA
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 834 AM CDT FRI JUN 19 2009 WIZ070-072-191345- KENOSHA-WALWORTH- 834 AM CDT FRI JUN 19 2009 ...SOUTHERN WALWORTH COUNTY STORM WEAKENING... AT 834 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THEH PREVIOUSLY STRONG THUNDERSTORM MOVING EAST NORTHEAST THROUGH SOUTHERN WALWORTH COUNTY HAS WEAKENED CONSIDERABLY. IT WILL GRADUALLY FALL APART AS IT REACHES THE TWIN LAKES AREA BY 845 AM. ONLY LIGHT TO MODERATE RAINS AND SOME LIGHTNING ARE EXPECTED. KAPELA
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 839 AM CDT FRI JUN 19 2009 WIZ069-070-191345- ROCK-WALWORTH- 839 AM CDT FRI JUN 19 2009 ...THUNDERSTORM OVER SOUTHEAST ROCK COUNTY WEAKENING... AT 839 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THE PREVIOUISLY STRONG THUNDERSTORM MOVING EAST NORTHEAST TROUGH SOUTHERN ROCK COUNTY HAS WEAKENED. IT WAS SOUTHEAST OF CLINTON...AND WILL MOVE TO THE AREA SOUTH OF THE VILLAGE OF WALWORTH BY 9 AM. ONLY SOME LIGHT TO MODERATE RAINS ARE EXPECTED AS THIS STORM GRADUALLY FALLS APART. KAPELA
The Quad Cities radar (KDVN), 108 km away, was scanning. The volume nearest the first event began at 13:53 UTC.
4 thunderstorm wind. Local standard time, as filed.
Several large trees were toppled and a power pole was bent by powerful thunderstorm winds.
Several large trees were blown down by thunderstorm winds.
Seveal large trees blown down by thunderstorm winds.
Seveal large trees blown down by thunderstorm winds.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Wisconsin in 2009Every state in 2009This day in weather historyWarnings in Wisconsin, June 2009
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 176856, 176857, 176858, 176859.