322
FXUS63 KGRB 292342
AFDGRB
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREEN BAY WI
542 PM CST THU JAN 29 2026
UPDATED AVIATION PORTION FOR 00Z TAF ISSUANCE
KEY MESSAGES
- WIND CHILLS NEAR 10 BELOW TO 25 BELOW LATE TONIGHT AND FRIDAY
MORNING. TEMPERATURES TREND TOWARDS NORMAL NEXT WEEK.
- BESIDES NON-IMPACTFUL LIGHT SNOW SHOWERS OR FLURRIES AT TIMES
THROUGH FRIDAY, THE NEXT CHANCE FOR WIDESPREAD SNOW (20-50%)
ARRIVES SUNDAY AFTERNOON INTO EARLY MONDAY.
DISCUSSION
ISSUED AT 310 PM CST THU JAN 29 2026
TEMPERATURES...AIR TEMPERATURES ONCE AGAIN FALL BELOW ZERO
TONIGHT, WITH LOWS RANGING FROM ABOUT 0 TO 10 BELOW. NORTH WINDS
AROUND 5 TO 10 MPH WILL MAKE FOR WIND CHILLS OF 10 TO 25 BELOW
LATE TONIGHT INTO FRIDAY MORNING. FORECAST STAYS ABOVE CRITERIA
FOR ANY COLD WEATHER HEADLINES, SO THERE ARE NO PLANS FOR
ISSUANCE. THE COLDEST OF THIS ARCTIC AIR DEPARTS FRIDAY, LEADING
TO MODERATING TEMPERATURES FOR THE REST OF THE FORECAST PERIOD.
READINGS WILL BE NEAR NORMAL FOR MOST OF NEXT WEEK, WITH HIGHS IN
THE 20S, AND LOWS IN THE SINGLE DIGITS AND TEENS.
SNOW...LIGHT SNOW AND FLURRIES HAVE BEEN FALLING OUT OF LOW
CLOUDS ACROSS NORTHERN WISCONSIN THIS AFTERNOON. ACCUMULATIONS UP
TO A COUPLE TENTHS EXPECTED FROM THIS SNOW, MAINLY IN FAR NORTH-
CENTRAL WI. OBS SHOW SOME BRIEF VISIBILITY REDUCTIONS TO 3 TO 5
MILES AT TIMES, OTHERWISE IMPACTS WILL BE MINIMAL.
THE OTHER SNOW CONCERN FOR TONIGHT IS A LAKE EFFECT SNOW BAND OVER
LAKE MICHIGAN. STILL HIGH UNCERTAINTY IN EXACTLY WHERE AND IF THIS
BAND WILL MOVE ON SHORE, BUT CAMS SHOWING A FEW HOURS OF EASTERLY
WINDS OVER THE LAKE, SO CONTINUE TO KEEP POPS ACROSS MAINLY
KEWAUNEE AND MANITOWOC COUNTIES LATE TONIGHT INTO FRIDAY MORNING.
SNOW AMOUNTS AROUND 1 INCH OR LESS ARE THE MOST LIKELY OUTCOME,
BUT SOME PLACE RIGHT NEAR THE SHORE COULD SEE UP TO 2 INCHES. AN
ONSHORE SNOW BAND WILL CLEAR OUT BY MID TO LATE MORNING FRIDAY AS
WINDS RETURN TO THE N/NW.
DRY WEATHER AND SUNSHINE ARE EXPECTED FOR SATURDAY, FOLLOWED BY
INCREASING CLOUDS SUNDAY MORNING AHEAD OF A CLIPPER SYSTEM. THE
NEXT OPPORTUNITY FOR SNOW IS SUNDAY AFTERNOON THROUGH SUNDAY NIGHT
FROM THIS CLIPPER, WITH AN ~30% PROBABILITY TO GET 1 INCH OF
SNOW.
AVIATION
FOR 00Z TAF ISSUANCE
ISSUED AT 541 PM CST THU JAN 29 2026
OVERALL, EXPECT SCT-BKN MVFR TO VFR CIGS TONIGHT, WITH A FEW
FLURRIES OVER NORTHERN WI AS A SURFACE TROUGH DROPS ACROSS THE
REGION.
ON FRIDAY, A LAKE EFFECT SNOW BAND IS EXPECTED TO COME ONSHORE
NEAR MTW IN THE MORNING, AT LEAST BRIEFLY, BEFORE DROPPING TO THE
SOUTH IN THE AFTERNOON. BASED ON LATEST GUIDANCE, FRAMED OUT THE
MOST FAVORED TIME TO SEE IFR CONDITIONS (VSBY REDUCTIONS).
CONFIDENCE IS ALBEIT LOWER THAN WOULD BE PREFERRED AT THIS SHORT
TIME HORIZON AS SOME GUIDANCE KEEPS BULK OF THE BAND OFFSHORE,
JUST GRAZING MTW. OTHERWISE, SCT-BKN VFR CLOUDS IN THE MORNING
WILL TREND TOWARD BKN MVFR BY AFTERNOON. A FEW FLURRIES MAY COME
OUT OF THE LOWER CLOUD DECK IN THE AFTERNOON AS WELL, THOUGH GREATEST
CHANCES OF THAT STAY OVER NORTHERN WI.
WEST-NORTHWEST WINDS REMAIN LIGHT BUT SHIFT NORTH LATE TONIGHT.
NORTHERLY WINDS WILL THEN TURN GUSTY FOR MOST OF THE DAY ON
FRIDAY, ESPECIALLY AT MTW ONCE THE LAKE EFFECT SHIFTS BY.
GRB WATCHES/WARNINGS/ADVISORIES
NONE.
DISCUSSION.....KLJ
AVIATION.......JLA
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