Thunderstorms that developed in a moist and unstable airmass produced large hail at a few locations in northeast 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 GRB wrote it up.
Thunderstorms that developed in a moist and unstable airmass produced large hail at a few locations in northeast 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 Green Bay, WI wrote its last area forecast discussion before the first event at Jul 17, 12:29 PM CST, 1 hour 43 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GREEN BAY WI 129 PM CDT THU JUL 17 2008 .SHORT TERM...LIMITED TIME FOR DISCUSSION THIS AFTN DUE TO ACTIVE WEATHER. FLASH FLOOD WATCH AND SEVERE TSTM WATCH POSTED. GUID TEMPS OK...BUT INCREASES POPS TNT DUE TO ONGOING ACTIVITY TO THE WEST. COULD HAVE A BREAK IN THE ACTIVITY LATE AFTERNOON INTO THIS EVENING BUT MORE STORMS DEVELOPING OVER NW IA BEHIND THIS FRONT. ALSO MORE DEVELOPMENT LATER TONIGHT AS THE CDFNT DROPS SOUTH. FFA IN EFFECT UNTIL 12Z FRIDAY. .LONG TERM...FRIDAY NIGHT THROUGH THURSDAY FRONTAL BOUNDARY SINKS SLOWLY SOUTHWARD FRIDAY NIGHT. CONTINUED CHANCES FOR SHOWERS AND THUNDERSTORMS OVER THE SOUTHERN THIRD FOR FRIDAY EVENING. FRONT BEGINS TO PUSH NORTHWARD ON SATURDAY... BRINGING ANOTHER ROUND OF SHOWERS AND THUNDERSTORMS TO THE AREA SATURDAY INTO SATURDAY NIGHT. SIGNIFICANT UPPER TROUGH MOVES ACROSS THE AREA SUNDAY. HAVE RAISED CHANCES FOR RAIN SUNDAY WITH THIS FEATURE. MAJOR CHANGE IN THE PATTERN EXPECTED MONDAY NIGHT INTO WEDNESDAY. RIDGING BUILDING INTO THE UPPER GREAT LAKES...THEREFORE REMOVED MENTION OF PRECIPITATION. RETURN FLOW SETS UP WEDNESDAY NIGHT WITH NEXT COLD FRONT MOVING INTO THE AREA THURSDAY. WILL INCLUDE A CHANCE OF SHOWERS AND THUNDERSTORMS WEDNESDAY NIGHT AND THURSDAY. && .AVIATION...WIDESPREAD MVFR/IFR CIGS AND VSBYS THIS AFTERNOON AND TONIGHT DUE TO TSRA. && .GRB WATCHES/WARNINGS/ADVISORIES... FLASH FLOOD WATCH THROUGH FRIDAY MORNING FOR WIZ030-031-035>040- 045-048>050. && TDH/ECKBERG
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GREEN BAY WI 446 AM CDT THU JUL 17 2008 WIZ005-010>013-018>022-030-031-035>040-045-048>050-073-074-181000- 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- 446 AM CDT THU JUL 17 2008 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL AND NORTHEAST WISCONSIN. .DAY ONE...TODAY AND TONIGHT THERE IS A SLIGHT RISK OF SEVERE STORMS THIS AFTERNOON INTO TONIGHT...WITH TORRENTIAL RAINFALL...DAMAGING WINDS AND LARGE HAIL THE MAIN THREATS. THERE IS SOME POTENTIAL FOR FLOODING... ESPECIALLY SOUTHWEST OF A LINE FROM WAUSAU TO SHAWANO TO GREEN BAY...WHERE THE GROUND IS SATURATED FROM RECENT RAINFALL. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY THERE IS A CONTINUED CHANCE OF THUNDERSTORMS ACROSS THE AREA THROUGH THE UPCOMING WEEKEND...AND INTO EARLY NEXT WEEK. WHILE IT IS TOO EARLY TO DETERMINE IF ANY OF THESE STORMS WILL BECOME SEVERE...HEAVY RAIN AND FLOODING ARE POSSIBLE. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON AND TONIGHT. LMZ521-522-541>543-181000- THE BAY OF GREEN BAY SOUTH OF A LINE FROM CEDAR RIVER MI TO ROCK ISLAND PASSAGE-LAKE MICHIGAN FROM WASHINGTON ISLAND TO SHEBOYGAN- 446 AM CDT THU JUL 17 2008 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF LAKE MICHIGAN. .DAY ONE...TODAY AND TONIGHT AREAS OF FOG...LOCALLY DENSE...MAY IMPACT MARINERS THROUGH TONIGHT. THERE IS CHANCE OF THUNDERSTORMS TODAY AND TONIGHT. TORRENTIAL RAINFALL AND GUSTY WINDS MAY ACCOMPANY THE STORMS. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY THERE IS A CHANCE OF THUNDERSTORMS FROM FRIDAY THROUGH MONDAY. AREAS OF MARINE FOG WILL STILL BE POSSIBLE DURING THIS PERIOD... AS A HUMID AIR MASS FLOWS ACROSS THE RELATIVELY COOL WATERS OF LAKE MICHIGAN. TSK/AK
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GREEN BAY WI 147 PM CDT THU JUL 17 2008 WIZ005-010>013-018>022-030-031-035>040-045-048>050-073-074-171945- BROWN-CALUMET-DOOR-FLORENCE-FOREST-KEWAUNEE-LANGLADE-LINCOLN- MANITOWOC-MARATHON-MENOMINEE-NORTHERN MARINETTE COUNTY-NORTHERN OCONTO COUNTY-ONEIDA-OUTAGAMIE-PORTAGE-SHAWANO-SOUTHERN MARINETTE COUNTY-SOUTHERN OCONTO COUNTY-VILAS-WAUPACA-WAUSHARA-WINNEBAGO-WOOD- 147 PM CDT THU JUL 17 2008 ...SEVERE THUNDERSTORMS POSSIBLE THIS AFTERNOON... AT 145 PM...DOPPLER RADAR INDICATED THUNDERSTORMS RAPIDLY DEVELOPING ACROSS CENTRAL AND NORTH-CENTRAL WISCONSIN. SOME OF THE STORMS WILL PRODUCE WINDS GREATER THAN 40 MPH...DANGEROUS CLOUD TO GROUND LIGHTNING...HEAVY DOWNPOURS AND HAIL. SEEK SHELTER IN A STURDY STRUCTURE IF A THUNDERSTORM APPROACHES YOUR LOCATION. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 PM THURSDAY EVENING FOR MUCH OF NORTHERN AND CENTRAL WISCONSIN. JKL
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GREEN BAY WI 246 PM CDT THU JUL 17 2008 WIZ005-010>013-018>022-030-031-035>040-045-048>050-073-074-172045- BROWN-CALUMET-DOOR-FLORENCE-FOREST-KEWAUNEE-LANGLADE-LINCOLN- MANITOWOC-MARATHON-MENOMINEE-NORTHERN MARINETTE COUNTY-NORTHERN OCONTO COUNTY-ONEIDA-OUTAGAMIE-PORTAGE-SHAWANO-SOUTHERN MARINETTE COUNTY-SOUTHERN OCONTO COUNTY-VILAS-WAUPACA-WAUSHARA-WINNEBAGO-WOOD- 246 PM CDT THU JUL 17 2008 ...SEVERE THUNDERSTORMS POSSIBLE THIS AFTERNOON... AT 245 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO SHOW THUNDERSTORMS ACROSS NORTHERN AND CENTRAL WISCONSIN. THE STORMS COULD CONTAIN WINDS GREATER THAN 40 MPH...OCCASIONAL CLOUD TO GROUND LIGHTNING...BRIEF HEAVY DOWNPOURS AND HAIL. IF A THUNDERSTORM APPROACHES YOUR AREA...TAKE SHELTER IN A STURDY BUILDING. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 7 PM FOR MUCH OF CENTRAL AND NORTHERN WISCONSIN. JKL
The Green Bay radar (KGRB), 50 km away, was scanning. The volume nearest the first event began at 20:13 UTC.
3 hail. Local standard time, as filed.
Nickel size hail fell at Lena. The thunderstorm that produced the hail also brought winds of at least 50 mph an very heavy rainfall.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Wisconsin in 2008Every state in 2008This day in weather historyWarnings in Wisconsin, July 2008
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: 128987, 128988, 128989.