Persistent thunderstorms produced flash flooding and nearly 5 inches of rain in the Sheboygan area as low pressure slowly moved through the area.
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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.
Persistent thunderstorms produced flash flooding and nearly 5 inches of rain in the Sheboygan area as low pressure slowly moved through the area.
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 16, 1:12 PM CST, 1 hour 25 minutes earlier. Its key messages:
Area Forecast Discussion National Weather Service Milwaukee/Sullivan WI 212 PM CDT Fri Aug 16 2024 .KEY MESSAGES... - Numerous thunderstorms developing this afternoon with the main window from 20Z-02Z. Small hail and gusty winds expected but a few severe thunderstorms are possible. - Showers likely with scattered storms for Sat as a cold front moves through S WI. && .SHORT TERM... Issued 147 PM CDT Fri Aug 16 2024 Tonight through Sunday: MLCAPE of 1500-2000 J/KG is present this afternoon with sct shower and storm development underway. A well organized shortwave trough approaching sw WI will move across srn WI into the early evening. Numerous showers and storms are expected to develop with the the main window from 20Z-02Z as depicted on the HREF. The effective shear will remain 20-25 kts this afternoon but still enough for storm maintenance and organization, thus cannot rule out a few SVR storms with large hail and damaging winds. The sfc low will move across Lake MI this evening reaching srn Lake Huron by 00Z Sun. Its cold front and another vorticity maximum will move through srn WI on Sat. 50-70 percent chances for showers and storms are forecast for ern WI with lesser chances to the west. 500 mb heights will then be rising Sat nt- Sun bringing a return of some sunshine for Sun, but still a slight chance for a shower over sern WI. Temperatures will remain near normal for this period. Gehring && .LONG TERM... Issued 147 PM CDT Fri Aug 16 2024 Monday through Friday: An upper ridge will prevail over the central and srn Rockies and the high plains through the week. Sfc high pressure will remain in the vicinity of WI during this period. Pleasant and dry summer weather is expected. Temperatures will be near or slightly below normal. Gehring && .AVIATION... Issued 147 PM CDT Fri Aug 16 2024 Sct-bkn035-040 cumulus this afternoon. Numerous showers and storms expected from 21Z-02Z. Low Cigs of 600-1900 feet developing from west to east across S WI this evening. The low Cigs will continue through Sat AM then MVFR Cigs for the early afternoon becoming sct-bkn035. Scattered showers and storms expected for Sat. Gehring && .MARINE... Issued 147 PM CDT Fri Aug 16 2024 Low pressure near 29.7 inches over northwest Wisconsin will slowly move across northern Wisconsin this afternoon and tonight, and to southern Lake Huron by the end of Saturday. Modest south winds today will become westerly late this evening for the south half, and variable winds for the north half. The winds will then transition to breezy north to northwest winds for the weekend. The winds will gradually weaken early next week as high pressure arrives over the lake by Tuesday. Scattered thunderstorms can be expected over the lake today into Saturday evening. A Small Craft Advisory may be needed Sunday afternoon and night from Sheboygan to Winthrop Harbor due to breezy north winds and high waves. Gehring && .MKX WATCHES/WARNINGS/ADVISORIES... WI...None. LM...None. && Visit us at weather.gov/milwaukee Follow us on Facebook, Twitter, and YouTube at: www.facebook.com/NWSMilwaukee www.twitter.com/NWSMilwaukee www.youtube.com/NWSMilwaukee
Hazardous Weather Outlook National Weather Service Milwaukee/Sullivan WI 138 PM CDT Fri Aug 16 2024 WIZ046-047-051-052-056>060-062>072-171845- Marquette-Green Lake-Fond du Lac-Sheboygan-Sauk-Columbia-Dodge- Washington-Ozaukee-Iowa-Dane-Jefferson-Waukesha-Milwaukee- Lafayette-Green-Rock-Walworth-Racine-Kenosha- 138 PM CDT Fri Aug 16 2024 This Hazardous Weather Outlook is for portions of east central Wisconsin, south central Wisconsin and southeast Wisconsin. .DAY ONE...This Afternoon and Tonight Scattered to numerous thunderstorms will continue to develop this afternoon and linger into the early evening. Some will become strong with small hail and gusty winds. The severe weather threat remains low. .DAYS TWO THROUGH SEVEN...Saturday through Thursday A few showers and thunderstorms are possible again by Saturday afternoon. Any storms should be short lived. Dry weather then follows next week. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed for this afternoon and early evening. LMZ643>646-171845- 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- 138 PM CDT Fri Aug 16 2024 This Hazardous Weather Outlook is for the nearshore waters from Sheboygan Wisconsin to Winthrop Harbor Illinois. .DAY ONE...This Afternoon and Tonight Scattered thunderstorms can be expected this afternoon and early evening. Small hail and gusty winds are possible with any storms. .DAYS TWO THROUGH SEVEN...Saturday through Thursday A few showers or thunderstorms are possible by Saturday afternoon. Otherwise, breezy northerly winds are expected later this weekend into early next week. A Small Craft Advisory may be needed Sunday afternoon and night. LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-868- 870-872-874-876-878-171845- Lake Michigan Michigan City IN to St. Joseph MI 5 NM offshore to mid-line of lake.- Lake Michigan from Seul Choix Point to Rock Island Passage 5NM offshore to Mid Lake- Lake Michigan South of a line from Seul Choix Point to the Mackinac Bridge and North of a line from Charlevoix MI to South Fox Island 5NM offshore- Lake Michigan from Charlevoix to Point Betsie MI 5NM Offshore to mid lake- Lake Michigan from Point Betsie to Manistee MI 5NM offshore to Mid Lake- Lake Michigan from Rock Island Passage to Sturgeon Bay WI 5NM offshore to mid lake- Lake Michigan from Sturgeon Bay to Two Rivers WI 5NM offshore to Mid Lake- Lake Michigan from Two Rivers to Sheboygan WI 5NM offshore to Mid Lake- Lake Michigan from Sheboygan to Port Washington WI 5NM offshore to Mid Lake- Lake Michigan from Port Washington to North Point Light WI 5NM offshore to Mid Lake- Lake Michigan from North Point Light to Wind Point WI 5NM offshore to Mid Lake- Lake Michigan from Wind Point WI to Winthrop Harbor IL 5NM offshore to Mid Lake- Lake Michigan from Winthrop Harbor to Wilmette Harbor IL 5NM offshore to Mid Lake- Lake Michigan from Wilmette Harbor to Michigan City in 5NM offshore to Mid Lake- Lake Michigan from Pentwater to Manistee MI 5NM offshore to Mid Lake- Lake Michigan from Whitehall to Pentwater MI 5NM offshore to Mid Lake- Lake Michigan from Grand Haven to Whitehall MI 5NM offshore to Mid Lake- Lake Michigan from Holland to Grand Haven MI 5NM offshore to Mid Lake- Lake Michigan from South Haven to Holland MI 5NM offshore to Mid lake- Lake Michigan from St Joseph to South Haven MI 5NM offshore to Mid Lake- 138 PM CDT Fri Aug 16 2024 This Hazardous Weather Outlook is for the open waters of Lake Michigan. .DAY ONE...This Afternoon and Tonight Scattered thunderstorms can be expected later this afternoon and early evening. Small hail and gusty winds are possible with any storms over the lake. .DAYS TWO THROUGH SEVEN...Saturday through Thursday Breezy northerly winds are expected over Lake Michigan this weekend into Monday. High waves will occur over the central and southern portions of the lake later Saturday into Sunday. Widely scattered showers and thunderstorms will also occur this weekend, before drying out early in the week. www.weather.gov/mkx
The Green Bay radar (KGRB), 88 km away, was scanning. The volume nearest the first event began at 20:38 UTC.
1 flash flood. Local standard time, as filed.
Street flooding on the south side of Sheboygan, including removed manhole covers from flooding sewers. Pictures of streets and yards flooded on the south side.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Wisconsin in 2024Every state in 2024This day in weather historyWarnings in Wisconsin, August 2024
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: 1203057.