Flood Advisory — Marquette County, Wisconsin
Minor flooding is expected — not severe enough for a warning, but potentially inconvenient or hazardous for travel.
Current Status
🌊 Active: Flood Advisory
Flood Advisory issued August 18 at 5:07PM CDT until August 18 at 8:00PM CDT by NWS Milwaukee/Sullivan WI
* WHAT...Flooding caused by excessive rainfall is expected. * WHERE...Southern Green Lake County in south central Wisconsin... Southern Marquette County in south central Wisconsin... * WHEN...Until 800 PM CDT. * IMPACTS...Minor flooding in low-lying and poor drainage areas. * ADDITIONAL DETAILS... - At 507 PM CDT, Doppler radar indicated heavy rain due to thunderstorms. Minor flooding is ongoing or expected to begin shortly in the advisory area. Between 1 and 1.5 inches of rain have fallen. - Additional rainfall amounts of 0.5 to 1 inch are expected over the area. This additional rain will result in minor flooding. - Some locations that will experience flooding include... Montello, Markesan, Packwaukee, Manchester, Mecan, Oxford, Endeavor, Kingston, Marquette, Dalton, Glen Oak and Briggsville. - http://www.weather.gov/safety/flood
Effective August 18, 2026 at 6:07 PM ET · Expires August 18, 2026 at 9:00 PM ET
Event Details
Event Type
Flood Advisory
Severity
minor
Issued By
NWS Milwaukee/Sullivan WI
Expires
August 18, 2026 at 9:00 PM ET
Last Checked
1 minute ago
What To Do
📋 Official NWS Guidance
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles.
Also In Effect For
This same Flood Advisory also covers:
Other Active Alerts in Wisconsin
Severe Thunderstorm Watch
Severe Thunderstorm Watch
Severe Thunderstorm Watch
Severe Thunderstorm Watch
Severe Thunderstorm Warning
Severe Thunderstorm Watch
Get Flood Advisory Alerts for Marquette County
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Frequently Asked Questions
What does a Flood Advisory mean for Marquette County, Wisconsin?
Minor flooding is expected — not severe enough for a warning, but potentially inconvenient or hazardous for travel.
Is this Flood Advisory currently active?
Yes — this alert is active as of our last check (1 minute ago). It's set to expire August 18, 2026 at 9:00 PM ET.
How do I get notified about Flood Advisory alerts for Marquette County?
Download StormCast free on Google Play and set Marquette County, Wisconsin as one of your monitored locations. StormCast checks the NWS feed continuously and pushes alerts like this directly to your phone — even with the screen off.
What other areas does this alert cover?
This same Flood Advisory is also in effect for Green Lake County.