Alert archive / Wisconsin / Flood Watches in 2020
Flood Watch 1, NWS Green Bay, WI
NWS Green Bay, WI issued this flood watch at May 17, 2020, 2:21 AM CDT for 9 counties in Wisconsin. It took effect at May 17, 2020, 10:00 AM CDT. It was in force for 22 hr.
The area
The counties it named.
The facts
- Issued
- May 17, 2020, 2:21 AM CDT (07:21 UTC)
- In effect from
- May 17, 2020, 10:00 AM CDT
- Expired
- May 18, 2020, 8:22 AM CDT
- In force
- 22 hr
- Issued by
- NWS Green Bay, WI
- Flood severity
- None
Counties Brown County, WI, Calumet County, WI, Door County, WI, Kewaunee County, WI, Manitowoc County, WI, Marinette County, WI, Oconto County, WI, Outagamie County, WI, Winnebago County, WI
The radar
The Green Bay radar (KGRB), 9 km from the middle of the area, began a volume at 07:22 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Green Bay/Straub, WI (KGRB), launched 00:00Z, 7.4 hours before the alert went out and 9 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1679 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 69 m²/s²
- 0-3 km storm-relative helicity
- 110 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this flood watch went out, 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 this flood watch went out at May 16, 10:49 PM CDT, 3 hours 32 minutes earlier.
Area forecast discussion, May 16, 10:49 PM CDT, 3 hours 32 minutes before
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</html>Hazardous weather outlook, May 16, 2:57 PM CDT, 11 hours 24 minutes before
Hazardous Weather Outlook National Weather Service Green Bay WI 257 PM CDT Sat May 16 2020 WIZ005-010>013-018>022-030-031-035>040-045-048>050-073-074-172000- 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- 257 PM CDT Sat May 16 2020 This Hazardous Weather Outlook is for north-central and northeast Wisconsin. .DAY ONE...Tonight The probability of hazardous weather is low. .DAYS TWO THROUGH SEVEN...Sunday through Saturday Locally heavy rainfall is expected Sunday into Sunday night, mainly in central and east-central Wisconsin. One to two inches of rain is forecast with lesser amounts farther north. Persistent and gusty east to northeast winds Sunday into Monday will result in the risk of lakeshore flooding along the southern Bay. Areas along the shoreline from Oconto to Green Bay to the Sturgeon Bay Canal will be most at risk. Minor flooding is also possible along the Lake Michigan shoreline. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed tonight. LMZ521-522-541>543-172000- The Bay of Green Bay south of a line from Cedar River MI to Rock Island Passage-Lake Michigan from Washington Island to Sheboygan- 257 PM CDT Sat May 16 2020 This Hazardous Weather Outlook is for portions of northwest Lake Michigan and the waters of Green Bay. .DAY ONE...Tonight The probability of hazardous weather is low. .DAYS TWO THROUGH SEVEN...Sunday through Saturday Conditions hazardous to small craft are expected Sunday due to increasing northeast winds and building waves. Strong and gusty east to northeast winds will approach gale force Sunday night through Monday. A Gale Watch remains in effect. RDM/AK
The office that day
Everything else NWS Green Bay, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 17, 3:32 AM CDT | Gale Warning | GRB | 45 hr | |
| May 17, 3:55 PM CDT | Areal Flood Advisory | GRB | Brown, Calumet, Kewaunee, Manitowoc | 13 hr |
Nearby
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.