686
FXUS63 KGRB 251130
AFDGRB
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREEN BAY WI
630 AM CDT SUN OCT 25 2026
UPDATED AVIATION PORTION FOR 12Z TAF ISSUANCE
KEY MESSAGES
- RAIN CHANCES 20-50% OVER NORTHERN WISCONSIN AND 30-60% MAINLY
OVER CENTRAL AND NORTH-CENTRAL WISCONSIN MONDAY NIGHT AND
TUESDAY.
- ANOTHER MILD DAY IN EAST-CENTRAL WI TODAY, BUT A RETURN TO MORE
SEASONAL TEMPS IN THE NORTH TODAY AND ACROSS THE ENTIRE AREA ON
MONDAY. THE COOL DOWN WILL BE BRIEF AS ABOVE NORMAL TEMPS
RETURN TUESDAY INTO NEXT WEEKEND.
DISCUSSION
ISSUED AT 1147 PM CDT SAT OCT 24 2026
RAIN CHANCES...SHOWER ACTIVITY HAS BEEN PRETTY UNIMPRESSIVE ALONG
THE FRONT SO FAR THIS EVENING ACROSS MN AND WESTERN WI, BUT STILL
EXPECTING RAIN SHOWER ACTIVITY TO DEVELOP/SPREAD INTO PORTIONS OF
CENTRAL AND NORTHERN WI OVERNIGHT INTO SUNDAY MORNING. THEN AS
THE FRONT SINKS SOUTH, A WEAK AREA OF FGEN COULD KEEP SOME SHOWERS
GOING FOR PARTS OF THE AFTERNOON/EVENING, WITH SOME CAMS
CONTINUING TO SUGGEST ISOLATED TO SCATTERED LIGHT SHOWER ACTIVITY.
STILL SOME UNCERTAINTY TO HOW PERSISTENT THIS THIS ACTIVITY WILL
BE AND IF IT WILL LAST INTO SUNDAY EVENING. ANY RAIN WOULD BE ON
THE LIGHTER SIDE, WITH UNDER A QUARTER INCH WHERE IT DOES RAIN
EXPECTED. WILL CONTINUE WITH RAIN CHANCES OF 15-40% TO COVER THE
SHOWER ACTIVITY. AS THE FRONT LIFT BACK NORTH LATE MONDAY INTO
TUESDAY, ANOTHER CHANCE (30-55%) FOR SHOWERS WILL MOVE INTO MAINLY
CENTRAL AND NORTH-CENTRAL WI. ADDITIONAL CHANCES FOR RAIN RETURN
LATE TUESDAY NIGHT AND WEDNESDAY, AND THEN AGAIN LATE THURSDAY
NIGHT INTO NEXT WEEKEND AS TWO SYSTEMS TREK ACROSS THE REGION.
CURRENT THINKING REMAINS THAT THE HEAVIER AND MORE PERSISTENT
RAINFALL WILL REMAIN NORTHWEST OF THE AREA THROUGH WEDNESDAY,
CLOSER TO THE LOW PRESSURE SYSTEM AND STRONGER SHORTWAVES.
TEMPERATURES...ANOTHER MILD DAY IS IN STORE ACROSS EAST-CENTRAL WI
ON SUNDAY, WITH HIGHS REMAINING AROUND 70 DEGREES. HOWEVER, BEHIND
THE FRONTAL BOUNDARY, TEMPS WILL BE ~15 COOLER THAN SATURDAY, WITH
HIGHS IN THE MID TO UPPER 50S. AS THE BOUNDARY SHIFTS TO OUR
SOUTH, A COOL DAY IS EXPECTED ON MONDAY WITH HIGHS IN THE UPPER
40S AND 50S. THE COOL DOWN WILL BE VERY SHORT-LIVED, AS HIGHS WILL
REBOUND 5-10 DEGREES ON TUESDAY THEN BACK INTO THE MID 60S TO LOW
70S ON WEDNESDAY. ABOVE NORMAL TEMPS REMAIN LIKELY THURSDAY INTO
NEXT WEEKEND, WITH HIGHS MAINLY IN THE 60S TO NEAR 70.
AVIATION
FOR 12Z TAF ISSUANCE
ISSUED AT 600 AM CDT SUN OCT 25 2026
MVFR CIGS ASSOCIATED WITH A COLD FRONT HAVE ARRIVED TO NORTH-
CENTRAL WISCONSIN, AND SHOULD CONTINUE TO PUSH SOUTH THROUGH THIS
AFTERNOON. ACCOMPANYING THE LOWER CIGS WILL BE LIGHT RAIN CHANCES
MAINLY ACROSS THE CENTRAL AND NORTH-CENTRAL TERMINALS THIS
MORNING INTO THIS AFTERNOON. RAIN CHANCES NOT LOOKING AS GOOD UP
NEAR RHI AS BEFORE, THOUGH HAVE KEPT A PROB30 MENTION FOR SHRA FOR
THIS MORNING. HAVE RETAINED PROB30 GROUPS FOR AUW AND CWA FOR
THIS AFTERNOON. CONDITIONS SHOULD GRADUALLY LIFT BACK TO VFR BY
THE END OF THE FORECAST PERIOD AS THE FRONT PASSES.
SURFACE WINDS SHIFT TO THE NORTH BEHIND THE FRONT LATER THIS
MORNING, SUSTAINED AT UNDER 10 KNOTS THROUGHOUT THE TAF PERIOD.
GRB WATCHES/WARNINGS/ADVISORIES
NONE.
DISCUSSION.....BERSCH
AVIATION.......GOODIN
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