325
FXUS63 KGRB 102311
AFDGRB
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREEN BAY WI
511 PM CST SAT JAN 10 2026
UPDATED AVIATION PORTION FOR 00Z TAF ISSUANCE
KEY MESSAGES
- SIGNIFICANT ACCUMULATING SNOW AND HAZARDOUS TRAVEL CONDITIONS
WILL CONTINUE ACROSS FAR NORTHEAST WISCONSIN INTO TONIGHT.
WINTER WEATHER ADVISORIES REMAIN IN EFFECT FOR FLORENCE AND
MARINETTE COUNTIES, WITH A WINTER STORM WARNING FOR DOOR COUNTY.
ADDITIONAL LIGHT SNOW WILL OCCUR ACROSS THE REST OF THE
FORECAST AREA, BUT ACCUMULATIONS SHOULD BE LIGHT AND GENERALLY
UNDER AN INCH.
- THERE IS A CHANCE OF LIGHT SNOW ACCUMULATIONS ACROSS NORTHERN
WISCONSIN SUNDAY NIGHT.
- LIGHT MIXED PRECIPITATION IS EXPECTED LATE MONDAY NIGHT INTO
TUESDAY NIGHT, WITH ACCUMULATING LAKE-EFFECT SNOW EXPECTED IN
NORTH CENTRAL WISCONSIN LATE TUESDAY NIGHT INTO WEDNESDAY.
- TEMPERATURES WILL REBOUND TO ABOVE NORMAL EARLY NEXT WEEK, THEN
FALL AGAIN INTO MIDWEEK.
DISCUSSION
ISSUED AT 245 PM CST SAT JAN 10 2026
A BAND OF MODERATE SNOW HAD SHIFTED NORTHEAST THIS AFTERNOON,
AND WAS SITUATED ACROSS FLORENCE, MARINETTE AND DOOR COUNTY
AT 2 PM. SNOWFALL REPORTS HAVE BEEN SPOTTY DURING THE DAY, BUT
MOST REPORTS IN THE HEADLINE AREAS INDICATED 2 TO 3 INCHES.
CLEARING OCCURRED OVER THE SOUTHWEST PART OF THE FORECAST AREA
AFTER THE SNOW BAND MOVED EAST, BUT LOW CLOUDS AND NUMEROUS LIGHT
SNOW SHOWERS WERE APPROACHING NORTH CENTRAL AND CENTRAL WI, IN
ASSOCIATION WITH AN UPPER LOW.
THE SNOW BAND IS EXPECTED TO PIVOT WNW TO ESE ACROSS FAR NORTHEAST
WI, THEN DROP SOUTH THROUGH THE REGION AND GRADUALLY WEAKEN LATER
THIS EVENING AND OVERNIGHT. MOST OF THE IMPACTS WITH THIS SHOULD
BE FELT ACROSS EASTERN WI, WITH CONTINUED SIGNIFICANT
ACCUMULATIONS OCCURRING IN FLORENCE, MARINETTE AND DOOR COUNTIES
THROUGH MIDNIGHT, AND LESSER AMOUNTS UP TO AN INCH ACROSS THE REST
OF EASTERN WI. THE SNOW SHOWERS ASSOCIATED WITH THE UPPER LOW
WILL BE MOST NUMEROUS OVER THE SOUTHWEST PART OF THE AREA INTO THE
EARLY EVENING, BUT PATCHY LIGHT SNOW SHOWERS OR FLURRIES COULD
PERSIST INTO THE OVERNIGHT PERIOD. CLEARING IS EXPECTED ACROSS ALL
BUT NORTH CENTRAL WI SUNDAY MORNING, BUT THIS WILL SHORT-LIVED,
AS CLOUDS WILL INCREASE AHEAD OF A CLIPPER SYSTEM LATER IN THE
AFTERNOON.
REST OF THE FORECAST... A WEAK CLIPPER SYSTEM WILL BRUSH THROUGH
NORTHERN WI SUNDAY NIGHT, AND COULD BRING LIGHT ACCUMULATIONS AND
SLIPPERY ROADS THERE. A SECOND STRONGER CLIPPER ARRIVES LATE
MONDAY NIGHT, BRINGING LIGHT MIXED PRECIPITATION THROUGH TUESDAY
NIGHT. ACCUMULATING LAKE-EFFECT SNOW IS EXPECTED OVER NORTH
CENTRAL WI LATE TUESDAY NIGHT INTO WEDNESDAY. ADDITIONAL CHANCES
FOR LIGHT SNOW ARRIVE THURSDAY NIGHT INTO FRIDAY, AND LAST INTO
THE WEEKEND, BUT NO BIG STORMS ARE ANTICIPATED AND DETAILS REMAIN
SKETCHY THIS FAR OUT.
TEMPERATURES WILL WARM TO ABOVE NORMAL AGAIN EARLY NEXT WEEK. A
DECENT SURGE OF COLDER AIR AND GUSTY NORTH WINDS FOLLOWS THE
MIDWEEK CLIPPER SYSTEM, LEADING TO COOLER TEMPERATURES FOR THE
LATTER HALF OF THE WORK WEEK.
AVIATION
FOR 00Z TAF ISSUANCE
ISSUED AT 511 PM CST SAT JAN 10 2026
A BAND OF MODERATE TO HEAVY SNOW WILL CONTINUE TO IMPACT FAR
NORTHEAST WISCONSIN EARLY THIS EVENING, WHILE AN UPPER-LEVEL
DISTURBANCE BRINGS SCATTERED LIGHT SNOW SHOWERS TO CENTRAL
WISCONSIN AND THE FOX VALLEY. A MIX OF VFR AND MVFR CEILINGS ARE
PREVALENT ACROSS THE CENTRAL AND NORTH-CENTRAL TERMINALS (KRHI,
KAUW, KCWA), WITH VFR OVER EAST-CENTRAL WI.
CONDITIONS ARE EXPECTED TO DETERIORATE TO WIDESPREAD MVFR BETWEEN
02Z AND 06Z AS A SECONDARY TROUGH ROTATES SOUTH THROUGH THE
REGION. THIS WILL BRING A FEW HOUR PERIOD OF LIGHT SNOW AND LOWER
CEILINGS/VISIBILITIES TO EASTERN WI TERMINALS. IFR VISIBILITIES
ARE POSSIBLE WITHIN THE STEADIER SNOW SHOWERS, PARTICULARLY AT
KGRB AND KMTW THROUGH BETWEEN 04-08Z. BRIEF IFR VISIBILITIES WILL
ALSO BE POSSIBLE AT THE CENTRAL WI TERMINALS THROUGH 03Z.
LOW- LEVEL WIND SHEAR IS ALSO A CONCERN TONIGHT AS A 35-40 KTS
DEVELOPS AROUND 2,000 FT AGL.
DRIER AIR ARRIVING FROM THE NORTHWEST WILL LEAD TO CLEARING AND A
RETURN TO VFR FOR MOST SITES BY 14Z-17Z SUNDAY. MVFR CEILINGS
WILL LIKELY PERSIST LONGEST AT KRHI DUE TO LAKE-EFFECT CLOUDS.
WEST TO NORTHWEST WINDS WILL REMAIN GUSTY TONIGHT WITH GUSTS OF 20
TO 25 KTS.
CONFIDENCE: HIGH ON GENERAL CEILING TRENDS; MEDIUM ON EXACT
TIMING OF SNOW SHOWERS AND FLIGHT CATEGORY CHANGES.
GRB WATCHES/WARNINGS/ADVISORIES
WINTER WEATHER ADVISORY UNTIL MIDNIGHT CST TONIGHT FOR WIZ012-
013-073.
WINTER STORM WARNING UNTIL 3 AM CST SUNDAY FOR WIZ022.
DISCUSSION.....KIECKBUSCH
AVIATION.......MPC
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