Record high lake levels on Lake Michigan caused some isolated flooded areas near the lake on an ongoing basis.
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.
Record high lake levels on Lake Michigan caused some isolated flooded areas near the lake on an ongoing basis.
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 Mar 31, 9:45 PM CST, 2 hours 15 minutes earlier.
Area Forecast Discussion National Weather Service Green Bay WI 1045 PM CDT Tue Mar 31 2020 Updated aviation portion for 06Z TAF issuance .SHORT TERM...Tonight and Wednesday Issued at 235 PM CDT Tue Mar 31 2020 Cyclonic flow and abundant low level moisture will keep skies cloudy to mostly cloudy for much of the period. Some lake effect light rain showers or drizzle is possible late this afternoon across east- central Wisconsin before onshore winds become lighter and the light precipitation ends. While the clouds kept temperatures below normal today, the clouds will actually keep temperatures from falling too far tonight as lows only sink into the upper 20s to lower 30s. Clouds will once again keep highs muted on Wednesday with afternoon temperatures only expected to rise into the 40s. Given the highs today went several degrees cooler than the NBM numbers. Some light rain or sprinkles are possible across the western cwa late Wednesday afternoon with weak 295-300K isentropic lift. .LONG TERM...Wednesday Night Through Tuesday Issued at 235 PM CDT Tue Mar 31 2020 Ridging at 500mb across the western Great Lakes region noted at the beginning of the period as a 500mb trough meanders across western Canada into the northwest United States through the end of the work week. A cold front will move across the region Friday afternoon and Friday night, bringing another round of rain to area. For Wednesday night into Thursday morning, continued the small chance of light rain, light snow or light freezing rain across the far north due to some isentropic lift. Several models indicating some light precipitation across the far north during this period. Mainly dry conditions are expected Thursday afternoon and Thursday night. The better chance for rain arrives during the day Friday, especially across central and north-central Wisconsin. The better chance for rain across eastern Wisconsin will be on Friday night with the passage of the cold front. High pressure builds into the region Saturday afternoon and will prevail across the region into Sunday night. Did remove or lower precipitation chances Saturday afternoon through Sunday. Another cold front will bring another chance of rain to the region next Monday. Temperatures will be cooler than normal Thursday, then temperatures should be above normal on Friday. Temperatures for the remainder of the period will be at or above normal. && .AVIATION...for 06Z TAF Issuance Issued at 1044 PM CDT Tue Mar 31 2020 Low clouds are expected to remain widespread across the area into tomorrow, with some clearing possible late in the day as drier air finally circulates into the area from the east. Bases will edge down overnight, primarily to MVFR. Some fog and sprinkles/flurries will also be possible in the east. Bases will slowly lift on Wednesday, through primarily MVFR conditions are anticipated throughout the morning. && .HYDROLOGY... Issued at 235 PM CDT Tue Mar 31 2020 Runoff from recent heavy rain continues to bring sites along the Wisconsin, Wolf, Peshtigo, Oconto, Embarrass and Menominee Rivers above Flood Stage. A number of other locations have seen water levels go above bankfull. Water levels should peak mid-week, before starting to fall. Residents living near rivers or streams should closely monitor water levels and be prepared to seek higher ground if flooding becomes imminent. && .GRB WATCHES/WARNINGS/ADVISORIES... NONE. && SHORT TERM.....Kurimski LONG TERM......Eckberg AVIATION.......Skowronski HYDROLOGY......Kurimski
Hazardous Weather Outlook National Weather Service Green Bay WI 143 PM CDT Tue Mar 31 2020 WIZ005-010>013-018>022-030-031-035>040-045-048>050-073-074-011845- Vilas-Oneida-Forest-Florence-Northern Marinette County-Lincoln- Langlade-Menominee-Northern Oconto County-Door-Marathon-Shawano- Wood-Portage-Waupaca-Outagamie-Brown-Kewaunee-Waushara-Winnebago- Calumet-Manitowoc-Southern Marinette County- Southern Oconto County- 143 PM CDT Tue Mar 31 2020 This Hazardous Weather Outlook is for north-central and northeast Wisconsin. .DAY ONE...Tonight Hazardous conditions are expected near streams and rivers due to high water levels and fast flows. Minor flooding of low-lying areas can be expected. Fast flows are also being reported below area dams. .DAYS TWO THROUGH SEVEN...Wednesday through Tuesday Many rivers and streams will remain above bankfull or surpass flood stage through the end of the week. .SPOTTER INFORMATION STATEMENT... Spotters are requested to report any flooding to the National Weather Service in Green Bay. LMZ521-522-541>543-011845- The Bay of Green Bay south of a line from Cedar River MI to Rock Island Passage-Lake Michigan from Washington Island to Sheboygan- 143 PM CDT Tue Mar 31 2020 This Hazardous Weather Outlook is for portions of northwest Lake Michigan and the waters of Green Bay. .DAY ONE...Tonight The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Wednesday through Tuesday The probability for widespread hazardous weather is low. Kurimski/Eckberg
The national radar mosaic for the moment the first event began.
2 flood. Local standard time, as filed.
Areas around the Kewaunee Marina were often under water due to record high lake levels.
North Bayshore Road was often under water due to record high lake levels.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Wisconsin in 2020Every state in 2020This day in weather historyWarnings in Wisconsin, April 2020
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: 876065, 876066.