828
FXUS63 KGRB 200926
AFDGRB
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREEN BAY WI
326 AM CST THU NOV 20 2025
FORECAST DISCUSSION FOR ROUTINE MORNING FORECAST ISSUANCE
KEY MESSAGES
- OVERCAST SKIES WITH PATCHY LIGHT RAIN OR DRIZZLE EXPECTED TODAY.
AREAS OF FOG IN NORTH CENTRAL AND CENTRAL WI THIS MORNING.
- ADDITIONAL PRECIPITATION CHANCES FROM MONDAY NIGHT THROUGH
THURSDAY.
- NEAR NORMAL TO ABOVE NORMAL TEMPERATURES EXPECTED THROUGH EARLY
NEXT WEEK, THEN TURNING COOLER WEDNESDAY INTO THURSDAY.
DISCUSSION
ISSUED AT 325 AM CST THU NOV 20 2025
A COLD FRONT WAS MOVING THROUGH MINNESOTA EARLY THIS MORNING,
AND SOUTH FLOW AHEAD OF THIS FRONT WAS ADVECTING LOW-LEVEL
MOISTURE INTO GRB CWA. WIDESPREAD LOW CLOUDS COVERED THE REGION
AND PATCHY LIGHT DRIZZLE WAS OCCURRING, ESPECIALLY OVER NORTH
CENTRAL AND CENTRAL WI, WHERE VERY LOW CEILINGS AND FOG WERE
ALSO OBSERVED. RADAR SHOWED A SMALL AREA OF LIGHT RAIN MOVING
THROUGH NORTHWEST WI, IN ASSOCIATION WITH A WEAK COUPLED UPPER
LEVEL JET AND SHORT-WAVE TROUGH. THIS RAIN MAY CLIP VILAS COUNTY
OVER THE NEXT FEW HOURS. TEMPERATURES HAD WARMED INTO THE MIDDLE
TO UPPER 30S OVER MOST OF THE FORECAST AREA, THUS LIMITING
POTENTIAL FOR FREEZING/FROZEN PRECIPITATION.
THE WEAK FRONTAL SYSTEM WILL MOVE THROUGH THE FORECAST AREA
TODAY, BRINGING A SMALL CHANCE OF LIGHT RAIN/DRIZZLE REGIONWIDE.
THE BEST CHANCE FOR MEASURABLE PRECIPITATION WILL BE ACROSS
FAR NORTHERN WI, WHERE DEEPER MOISTURE WILL BE PRESENT. WITH
WIDESPREAD LOW CLOUDS LINGERING THROUGH THE DAY, HAVE OPTED TO
LOWER HIGH TEMPERATURES A FEW DEGREES.
DRY WEATHER IS ANTICIPATED FROM TONIGHT THROUGH MONDAY. HIGH
PRESSURE ARRIVES LATER TONIGHT AND LINGERS THROUGH FRIDAY NIGHT.
A WEAK COLD FRONT MOVES THROUGH SATURDAY INTO SATURDAY NIGHT, BUT
WITH THE ASSOCIATED LOW PRESSURE SYSTEM AND SHORT-WAVE ENERGY
TRACKING WELL NORTH OF THE REGION, DRY WEATHER SHOULD PREVAIL.
HIGH PRESSURE RETURNS SUNDAY INTO MONDAY.
REST OF THE FORECAST: THE REMNANTS OF A SOUTHWEST U.S. UPPER LOW
WILL LIFT NORTHEAST TOWARD THE GREAT LAKES, BRINGING A CHANCE OF
LIGHT RAIN MONDAY NIGHT INTO TUESDAY. A STRONG UPPER LOW OVER THE
NORTHERN PLAINS WILL THEN SHIFT NORTHEAST TOWARD LAKE SUPERIOR,
BRINGING A MIX OF RAIN/SNOW TUESDAY NIGHT INTO WEDNESDAY, AND
A CHANCE OF SNOW WEDNESDAY NIGHT INTO THURSDAY.
TEMPERATURES: NORMAL TO ABOVE NORMAL TEMPERATURES ARE EXPECTED
THROUGH EARLY NEXT WEEK, WITH A TREND TOWARD BELOW NORMAL READINGS
MID TO LATE WEEK.
AVIATION
FOR 06Z TAF ISSUANCE
ISSUED AT 1048 PM CST WED NOV 19 2025
STRATUS HAS MOVED IN ACROSS THE TAF SITES THIS EVENING WITH
CONDITIONS RANGING FROM IFR/MVFR ACROSS CENTRAL AND NORTH-CENTRAL
WISCONSIN TO MVFR/VFR ACROSS EAST-CENTRAL AND NORTHEAST WISCONSIN.
CONDITIONS SHOULD CONTINUE TO DETERIORATE OVERNIGHT WITH THE
POOREST CONDITIONS EXPECTED ACROSS NORTH-CENTRAL WI (RHI/CWA/AUW),
WHERE CEILINGS WILL LIKELY FALL TO LIFR/IFR LEVELS WITH
VISIBILITIES DROPPING TO MVFR/IFR IN MIST. SCATTERED LIGHT RAIN OR
MIXED PRECIPITATION IS POSSIBLE AT RHI LATE TONIGHT INTO THURSDAY
MORNING AND KEPT THE PROB30 FROM 09Z-15Z.
FURTHER EAST ACROSS THE FOX VALLEY AND LAKESHORE (GRB/ATW/MTW),
CEILINGS WILL LOWER TO MVFR OVERNIGHT, BUT VISIBILITIES SHOULD
LARGELY REMAIN VFR WITH SOME MVFR POSSIBLE. IMPROVEMENT WILL BE
SLOW ON THURSDAY, WITH IFR/MVFR CEILINGS LINGERING THROUGH MUCH OF
THE DAY UNDER AN INVERSION WITH ABUNDANT LOW LEVEL MOISTURE.
MODELS INDICATE MUCH OF THE REGION WILL REMAIN IFR/MVFR FOR MUCH
OF IF NOT THE REST OF THE TAF PERIOD.
GRB WATCHES/WARNINGS/ADVISORIES
NONE.
DISCUSSION.....KIECKBUSCH
AVIATION.......KURIMSKI
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page