Area Forecast Discussion
Issued by NWS Green Bay, WI
Issued by NWS Green Bay, WI
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807 FXUS63 KGRB 140830 AFDGRB Area Forecast Discussion National Weather Service Green Bay WI 230 AM CST Fri Nov 14 2025 Forecast discussion for routine morning forecast issuance .KEY MESSAGES... - Above average temperatures through Saturday, with highs in the low 60s possible mainly in the Fox Valley Friday and Saturday afternoons. - Minimal precipitation through early next week, with only light rain expected late tonight into Saturday, and again Monday into Tuesday. - Worsening drought conditions will be possible due to the persistent dry pattern. && .DISCUSSION... Issued at 138 AM CST Fri Nov 14 2025 Precip chances... Light rain is still on track to impact northeast Wisconsin late tonight into Saturday as a strong yet moisture- starved cold front treks southeast. Best chances for showers will be over portions of north-central and far northeast Wisconsin, where modest saturation occurs above 925 mb. This being said, QPF is expected to be held down to a few hundredths of an inch or less. Long-range guidance continues to trend toward a drier forecast early next week. Grand ensemble now shows more of a sheared out wave that ejects from the west coast into the Ohio River Valley late Monday, flattening out as it encounters Canadian high pressure sliding into the upper Midwest. This leaves much of the Great Lakes in no man`s land between the northern and southern streams of a split flow regime, resulting in an unfavorable setup for any measurable precip. Opted to keep the blended PoPs across our southern counties, though have tamped down to slight chance. Will continue to mention the potential for worsening drought conditions within the next couple of weeks due to persistent dry pattern. Temperatures... Thermal ridge axis moves over Wisconsin this evening, resulting in above average (though not record) temperatures this afternoon, and again Saturday afternoon. Highs will flirt with 60 degrees in the Fox Valley both days as 850 mb temps max out near 16C, while reading in the mid to upper 50s elsewhere. However, a steady stream of WAA preceding cold FROPA will usher in a mid cloud deck beginning late this afternoon, leading to less efficient surface heating and a slightly lower temperature forecast on both days. Post-frontal temperatures then fall back into near average territory on Sunday, ranging from the mid 30s to mid 40s. Highs stabilize in this range for the entirety of the next work week. Winds... Winds ramp up and veer to northwesterly following cold FROPA on Saturday, peaking during the afternoon as deeper mixing occurs. 25 to 30 mph gusts will be possible on land during this time. Given the influx of CAA within a tightening pressure gradient, would not be surprised to see a gale or two in our marine zones, especially up by Death`s Door. && .AVIATION...for 06Z TAF Issuance Issued at 950 PM CST Thu Nov 13 2025 VFR conditions to persist through the TAF period. A band of mid- clouds 9-12 kft will exit northeast Wisconsin after about 09z. Light southwest winds under 10 kts will back to the southeast on Friday. Low level wind shear (240 deg 35 kts) is forecast to develop around 00z Saturday over north- central WI before expanding southeast through the night. Outlook: Gusty northwest winds to 25-30 kts are expected to develop on Saturday behind a cold front. && .GRB WATCHES/WARNINGS/ADVISORIES... None. && $$ DISCUSSION.....Goodin AVIATION.......MPC