848
FXUS63 KGRB 270831
AFDGRB
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREEN BAY WI
231 AM CST TUE JAN 27 2026
KEY MESSAGES
- UNSEASONABLY COLD TEMPERATURES CONTINUE THROUGH THE WORK WEEK
WITH OVERNIGHT AND EARLY MORNING WIND CHILLS GENERALLY 10
BELOW TO 25 BELOW ZERO.
- GRADUALLY MODERATING TEMPERATURES OVER THE WEEKEND INTO EARLY
NEXT WEEK TRENDING BACK CLOSER TO SEASONAL AVERAGES IN THE
20S.
DISCUSSION
ISSUED AT 230 AM CST TUE JAN 27 2026
TODAY-FRIDAY: MAINLY DRY AND CONTINUED COLD
LOW-LEVEL COLD ADVECTION CONTINUES THIS MORNING AS A STRONG
SHORTWAVE DIVES ACROSS THE NORTHERN GREAT LAKES. SOME POST-FRONTAL
STRATUS AND SCATTERED FLURRIES WILL LINGER THROUGH THE DAY WITH
GUSTS UP 30 MPH THROUGH THE MORNING. AS WINDS INCREASE, WIND
CHILLS WILL DIP TO 15 TO 25 BELOW ZERO ACROSS MUCH OF THE AREA
DURING THE MORNING.
NORTHWEST FLOW ALOFT WILL CONTINUE OVER THE NEXT SEVERAL DAYS WITH
BROAD SURFACE HIGH PRESSURE CENTERED ACROSS THE PLAINS KEEPING
WISCONSIN UNDER COLD LOW-LEVEL NORTHERLY FLOW. AS A RESULT, LITTLE
IMPROVEMENT IN TEMPERATURES WILL OCCUR THROUGH THE REST OF THE WORK
WEEK WITH HIGHS REMAINING IN THE SINGLE DIGITS AND TEENS ABOVE ZERO
AND LOWS IN THE SINGLE DIGITS AND TEENS BELOW ZERO. WIND CHILLS MAY
DIP NEAR COLD WEATHER ADVISORY THRESHOLDS AT TIMES DURING THE
OVERNIGHT/EARLY MORNING HOURS WITH LOW TO MEDIUM (30-70%)
PROBABILITIES FOR WIND CHILLS REACHING 25 BELOW OVER CENTRAL
WISCONSIN OVERNIGHTS THROUGH THURSDAY NIGHT AND 20 TO 50
PERCENT PROBABILITIES FOR 20 BELOW ZERO WIND CHILLS INTO THE FOX
VALLEY AND FAR NORTHEAST WISCONSIN.
WITH PRECIPITABLE WATER VALUES REMAINING IN THE 10TH TO 20TH
PERCENTILES RELATIVE TO CLIMO, THE PATTERN FAVORS MAINLY DRY
CONDITIONS. A FEW FLURRIES/SNOW SHOWERS COULD NOT BE RULED OUT WITH
ANY SHORTWAVE TROUGH PASSAGES. LAKE EFFECT SNOW SHOWERS MAY IMPACT
PARTS OF NORTH-CENTRAL WISCONSIN AT TIMES WITH LOW CHANCES FOR
LAKE EFFECT SNOW SHOWERS ALONG PARTS OF THE WESTERN LAKE
MICHIGAN SHORELINE TOWARDS FRIDAY AS LOW-LEVEL WINDS TURN
NORTHERLY WITH STRONG HIGH PRESSURE NOSING SOUTH FROM SOUTHERN
CANADA.
SATURDAY-MONDAY: SLOWLY MODERATING TEMPERATURES
AS THE BROAD HIGH PRESSURE SYSTEM PASSES SOUTHEAST OVER THE WEEKEND
AND MID-LEVEL HEIGHTS RISE WITH WARM ADVECTION, THERE REMAINS A
CONSISTENT SIGNAL FOR TEMPERATURES TO GRADUALLY REBOUND OVER THE
WEEKEND INTO EARLY NEXT WEEK. CHANCES FOR ANY SIGNIFICANT
PRECIPITATION REMAIN LOW INTO NEXT WEEK, WITH SOME LOW (20-30%) SNOW
CHANCES BY SUNDAY/MONDAY WITH MODEST MOISTURE RETURN AND WARM
AIR ADVECTION.
AVIATION /06Z TAFS THROUGH 06Z WEDNESDAY/
ISSUED AT 1049 PM CST MON JAN 26 2026
THE MAIN BAND OF SNOW IS SHIFTING EAST OF THE AREA LATE IN THE
EVENING. SOME LINGERING FLURRIES CONTINUED ACROSS MUCH OF THE AREA
WHICH SHOULD CONTINUE INTO THE OVERNIGHT HOURS. THE MAIN CHANGE
TO THE FORECAST IS WINDS HAVE DIMINISHED LATE THIS EVENING,
BUT SHOULD PICK BACK UP AGAIN AROUND 09Z AT THE KGRB/KATW/KMW
TAF SITES AND BY 06-07Z AT KAUW/KCWA/KRHI. WIND GUSTS FROM
THE WEST TO NORTHWEST AROUND 25 KNOTS CAN BE EXPECTED THEN
THROUGH MID AFTERNOON BEFORE WINDS GRADUALLY SUBSIDE TOWARDS
SUNSET. AREAS OF MVFR CIGS ARE POSSIBLE NORTH AND WEST OF THE FOX
VALLEY TUESDAY MORNING BEFORE RISING INTO THE VFR CATEGORY.
GRB WATCHES/WARNINGS/ADVISORIES
WI...NONE.
MARINE...SMALL CRAFT ADVISORY UNTIL 6 PM CST THIS EVENING FOR LMZ521-
522-541>543.
DISCUSSION...JM
AVIATION...ECKBERG
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