752
FXUS63 KGRB 210350
AFDGRB
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREEN BAY WI
1050 PM CDT MON OCT 20 2025
UPDATED AVIATION PORTION FOR 06Z TAF ISSUANCE
KEY MESSAGES
- TEMPERATURES DROP BELOW NORMAL TUESDAY THROUGH THURSDAY, THEN
RETURN TO NEAR NORMAL NEXT WEEKEND.
- RAIN RETURNS LATE THIS AFTERNOON AND EVENING, AND CONTINUES
THROUGH TUESDAY. PERIODIC SHOWERS REMAIN POSSIBLE INTO THURSDAY.
- BLUSTERY CONDITIONS ANTICIPATED THROUGH WEDNESDAY, ALONG WITH
HAZARDOUS CONDITIONS FOR SMALL CRAFT ON LAKE MICHIGAN.
DISCUSSION
ISSUED AT 154 PM CDT MON OCT 20 2025
A COLD FRONT CURRENTLY LOCATED OVER MINNESOTA, WILL TRACK ACROSS
THE REGION TONIGHT. A LINE OF SHOWERS AHEAD OF THE COLD FRONT WILL
ARRIVE ACROSS CENTRAL AND NORTH-CENTRAL WISCONSIN LATE THIS
AFTERNOON AND THE REST OF THE AREA LATER THIS EVENING AND
OVERNIGHT. THE SHOWERS WILL GENERALLY BE LIGHT TO MODERATE THEN
SUBSEQUENTLY END FROM WEST TO EAST LATE THIS EVENING AND OVERNIGHT
AS THE COLD FRONT TRACKS EAST.
AFTER A BRIEF BREAK IN THE PRECIPITATION OVERNIGHT, ADDITIONAL
SHOWERS WILL DEVELOP ON TUESDAY AS AN UPPER LOW TRACKS THROUGH THE
WESTERN GREAT LAKES. CYCLONIC WNW FLOW, ADDITIONAL SHORT-WAVES
WRAPPING AROUND THE SLOWLY DEPARTING UPPER LOW, AND LOW PRESSURE
TRACKING JUST NORTHEAST OF THE STATE (TUESDAY NIGHT) WILL PRODUCE
PERIODIC SHOWERS THROUGH MIDWEEK, ALONG WITH BLUSTERY CONDITIONS
AND BELOW NORMAL TEMPERATURES (HIGHS IN THE 40S AND LOWER 50S).
SCATTERED LAKE-EFFECT SHOWERS MAY LINGER OVER NORTH CENTRAL WI AND
NORTHERN DOOR COUNTY INTO THURSDAY.
HIGH PRESSURE BRINGS DRIER CONDITIONS AND NEAR NORMAL TEMPERATURES
FOR THE END OF THE WEEK AND INTO THE WEEKEND.
AVIATION
FOR 06Z TAF ISSUANCE
ISSUED AT 1049 PM CDT MON OCT 20 2025
LIGHT RAIN AND LOWERING CIGS CONTINUE TO SPREAD TO THE EASTERN TAF
SITES TONIGHT. RESULT IS WIDESPREAD MVFR CONDITIONS, WITH LIGHT
RAIN GRADUALLY COMING TO AN END ACROSS THE WESTERN SITES. A BRIEF
WINDOW FOR PARTIAL CLEARING AND VFR CIGS THEN MOVES IN BEHIND THE
FRONT, FOLLOWED BY ANOTHER ROUND OF LIGHT TO MODERATE RAIN
ARRIVING TUESDAY AFTERNOON. ATTEMPTED TO PROVIDE TEMPORAL
RESOLUTION FOR RAIN ARRIVAL VIA TEMPO GROUPS. MVFR CIGS RETURN
DURING THIS TIME AS WELL, THOUGH LOW CLOUDS WILL BE SLOWER TO
ARRIVE TO GRB, ATW, AND MTW.
WINDS CONTINUE TO VEER TO WESTERLY BEHIND THE COLD FRONT, RAMPING
UP LATER TUESDAY MORNING AS THE PRESSURE GRADIENT TIGHTENS UP ON
THE BACK EDGE OF THE DEPARTING SURFACE LOW. SURFACE GUSTS TO 25
KNOTS WILL BE POSSIBLE THROUGH WEDNESDAY MORNING. ANOTHER ROUND
OF LLWS LIKEWISE SETS UP ACROSS THE AREA FROM NORTH TO SOUTH
EARLY WEDNESDAY MORNING AS 850 MB WINDS INCREASE.
GRB WATCHES/WARNINGS/ADVISORIES
NONE.
DISCUSSION.....KURIMSKI
AVIATION.......GOODIN
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page