Scattered thundestorms with plenty of lightning rolled through south-central Wisconsin.
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.
Scattered thundestorms with plenty of lightning rolled through south-central Wisconsin.
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 Aug 24, 1:53 AM CST, 1 hour 7 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 253 AM CDT FRI AUG 24 2007 .DISCUSSION...FORECAST FOCUS IS ON RAIN CHANCES TODAY AND TONIGHT. THERE APPEARS TO BE LITTLE CONSISTENCY BETWEEN THE MODELS THIS RUN AS FAR AS QPF PATTERN IS CONCERNED. ALL MODELS AND HPC HAVE DIFFERENT SOLUTIONS TO A SERIES OF WAVES MOVING ALONG THE SURFACE AND H850 BAROCLINIC ZONE. CONFIDENCE IN ANY ONE SOLUTION IS LOW. I HAVE DECIDED TO GO WITH A BLEND OF GFS...NAM AND HPC QPF SOLUTIONS TODAY AND TONIGHT. THE GFS KEEPS THE H850 BAROCLINIC AREA FURTHER NORTH INTO THE CWA AND PRODUCES PERIODS OF VERY STRONG ISENT LIFT. CONVECTION DEVELOPING AT THIS TIME IN THE CWA APPEARS TO BE ASSOCIATED WITH OVERRUNNING SINCE THE SURFACE BOUNDARY IS NORTH OF THE CWA. THIS WOULD TEND TO FAVOR GFS H850 POSITION. HPC AND NAM KEEPS THE HEAVIEST QPF SOUTH OF WISCONSIN AS THIS WOULD FIT IN WITH CURRENT REAL TIME TRENDS. I THINK A BLEND BETWEEN THE DIFFERING SOLUTIONS MIGHT BE THE BEST FIT. IN ANY CASE...MOS POPS ARE VERY HIGH WITH BOTH MAV AND MET GUIDANCE TODAY AND TONIGHT. I WILL NOT STRAY FAR FROM MOS POPS. THE WEEKEND AND ALSO MONDAY CONTINUE TO LOOK QUIET WITH HIGH PRESSURE DRIFTING ACROSS THE REGION...AND MID LEVELS EXPECTED TO BE VERY DRY. THERE WILL BE SOME RELIEF IN DEW POINTS WITH PLEASANT TEMPERATURES. && .AVIATION...COMBINATION OF MOIST LOW LEVEL AIRMASS AND LIGHT SURFACE WINDS WILL KEEP EXTENSIVE IFR CEILING CONDITIONS AND MVFR VISIBILITIES IN FOG/TSTMS ACROSS REGION FOR MUCH OF TODAY. LOCAL VLIFR IN CEILINGS AND VISIBILITIES IN FOG EXPECTED THRU 15Z ESPECIALLY OVER AREAS OF THIN CLOUD COVER. ACTIVE SCATTERED CONVECTION ACROSS IA/IL WILL MOVE ACROSS THE AREA THIS MORNING INTO AFTERNOON HOURS AS SEVERAL SHORT WAVES PROPAGATE ALONG FRONTAL BOUNDARY NEAR WISCONSIN/ILLINOIS BORDER. CONVECTION WILL BECOME MORE WIDESPREAD DURING OVERNIGHT HOURS. && .MKX WATCHES/WARNINGS/ADVISORIES... FLASH FLOOD WATCH THROUGH SATURDAY MORNING FOR WIZ056>060- 062>072. && 35/17
HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 1130 PM CDT THU AUG 23 2007 WIZ046-047-051-052-056>060-062>072-241000- MARQUETTE-GREEN LAKE-FOND DU LAC-SHEBOYGAN-SAUK-COLUMBIA-DODGE- WASHINGTON-OZAUKEE-IOWA-DANE-JEFFERSON-WAUKESHA-MILWAUKEE- LAFAYETTE-GREEN-ROCK-WALWORTH-RACINE-KENOSHA- 1130 PM CDT THU AUG 23 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EAST CENTRAL WISCONSIN...SOUTH CENTRAL WISCONSIN AND SOUTHEAST WISCONSIN. .DAY ONE...TONIGHT. A FLASH FLOOD WATCH IS IN EFFECT TONIGHT FOR MUCH OF SOUTHERN WISCONSIN...MAINLY SOUTH OF A WISCONSIN DELLS TO OOSTBURG LINE. THUNDERSTORMS ARE LIKELY DURING THE EARLY MORNING HOURS. AREAS OF FOG ARE EXPECTED...WITH SOME AREAS REDUCING VISIBILITIES TO 1/2 MILE OR LESS...ESPECIALLY IN THE WISCONSIN RIVER VALLEY AND IN AREAS NORTH OF A LINE FORM MADISON TO MILWAUKEE. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY. THE FLASH FLOOD WATCH WILL BE IN EFFECT THROUGH FRIDAY NIGHT FOR MUCH OF SOUTHERN WISCONSIN...MAINLY SOUTH OF A WISCONSIN DELLS TO OOSTBURG LINE. THUNDERSTORMS ARE EXPECTED FRIDAY...AND ARE LIKELY FRIDAY NIGHT. THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FRIDAY AND FRIDAY NIGHT OVER FAR SOUTHEAST WISCONSIN. THE MAIN HAZARD WILL BE DAMAGING WINDS. HEAVY RAIN WITH THE STORMS WILL AGGRAVATE ANY EXISTING FLOODING PROBLEMS. THERE IS A CHANCE OF THUNDERSTORMS TUESDAY THROUGH WEDNESDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED TONIGHT. RAINFALL REPORTS WOULD BE APPRECIATED. LMZ643>646-665-241000- SHEBOYGAN TO PORT WASHINGTON- PORT WASHINGTON TO NORTH POINT LIGHTHOUSE- NORTH POINT LIGHTHOUSE TO WIND POINT- WIND POINT TO WINTHROP HARBOR ILLINOIS- WISCONSIN ADJACENT OPEN WATERS OF LAKE MICHIGAN TO MID LAKE- 1130 PM CDT THU AUG 23 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF LAKE MICHIGAN. .DAY ONE...TONIGHT. THUNDERSTORMS ARE LIKELY DURING THE EARLY MORNING HOURS. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY. THUNDERSTORMS ARE EXPECTED FRIDAY...AND ARE LIKELY FRIDAY NIGHT. THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FRIDAY AND FRIDAY NIGHT...MAINLY SOUTH OF NORTH POINT LIGHTHOUSE. THE MAIN HAZARD WILL BE DAMAGING WINDS. THERE IS A CHANCE OF THUNDERSTORMS TUESDAY THROUGH WEDNESDAY. HENTZ WWW.WEATHER.GOV/MKX
The Milwaukee radar (KMKX), 103 km away, was scanning. The volume nearest the first event began at 08:59 UTC.
1 lightning. Local standard time, as filed.
Lightning struck a commerical peg farm near Sauk City, killing about 1900 pigs. The exact location of the farm isn't known.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Wisconsin in 2007Every state in 2007This day in weather historyWarnings in Wisconsin, August 2007
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: 57688.