614
FXUS63 KGRB 171134
AFDGRB
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREEN BAY WI
634 AM CDT WED OCT 17 2018
UPDATED AVIATION PORTION FOR 12Z TAF ISSUANCE
SHORT TERM...TODAY...TONIGHT
AND THURSDAY
ISSUED AT 333 AM CDT WED OCT 17 2018
A SHORT-WAVE TROF AND MARGINAL LAKE-ENHANCEMENT WILL BRING
SCATTERED SNOW SHOWERS TO FAR NORTHERN WI THROUGH ABOUT MIDDAY. A
DUSTING TO A HALF INCH OF SNOW IS POSSIBLE NORTH OF HIGHWAY 8,
WITH UP TO AN INCH OVER FAR NORTHERN VILAS COUNTY. MOSTLY CLOUDY
SKIES WILL GIVE WAY TO DECREASING CLOUDS AS HIGH PRESSURE PUSHES
INTO THE REGION IN THE AFTERNOON. WEST TO NORTHWEST WINDS WILL
GUST TO 25 TO 30 MPH BEFORE DIMINISHING LATE IN THE DAY. HIGH
TEMPERATURES WILL BE MUCH COOLER, RANGING FROM THE MIDDLE TO UPPER
30S NORTHWEST TO THE LOWER TO MIDDLE 40S SOUTHEAST.
HIGH PRESSURE, CLEAR SKIES AND LIGHT WINDS SHOULD ALLOW
TEMPERATURES TO DROP INTO THE UPPER TEENS AND 20S TONIGHT.
ON THURSDAY, GUSTY SOUTHWEST WINDS AND SUNNY SKIES WILL ALLOW
TEMPERATURES TO WARM WELL INTO THE 50S AT MOST LOCATIONS.
LONG TERM
THURSDAY NIGHT THROUGH TUESDAY
ISSUED AT 333 AM CDT WED OCT 17 2018
EXPECT BELOW NORMAL TEMPERATURES AND DRY CONDITIONS FOR MOST OF
THIS FORECAST PERIOD. THE WARMEST AND WETTEST CONDITIONS WILL BE
LATE THIS WEEK AS A 500 MB LOW EJECTS OUT OF THE SOUTHWEST CONUS,
RESULTING IN A PERIOD OF SOUTHWEST FLOW ALOFT AND SOUTHERLY
SURFACE WINDS AHEAD OF AN APPROACHING COLD FRONT. HIGH
TEMPERATURES ON FRIDAY SHOULD BE NEAR NORMAL BUT SHOWERS ARE
POSSIBLE AS THE MID LEVEL TROUGH AND COLD FRONT PASS.
PRECIPITATION IS LIKELY ON SATURDAY AS A SECONDARY COLD FRONT AND
MID LEVEL SHORT WAVE MOVE ACROSS THE STATE. PRECIPITATION SHOULD
BE IN THE FORM OF SNOW ACROSS THE NORTH AND RAIN FROM THE FOX
VALLEY EAST TO LAKE MICHIGAN. THE REST OF THE FORECAST AREA WILL
SEE RAIN, SNOW OR A MIX. THERE IS STILL A CHANCE FOR LIGHT SNOW IN
FAR NORTH-CENTRAL WISCONSIN SATURDAY NIGHT IN COLD CYCLONIC FLOW
BOTH AT THE SURFACE AND ALOFT. A SURFACE HIGH PRESSURE SYSTEM AND
WEAK MID LEVEL TROUGH SHOULD KEEP THE AREA DRY FOR THE REST OF THE
WEEKEND INTO EARLY NEXT WEEK.
AVIATION
FOR 12Z TAF ISSUANCE
ISSUED AT 630 AM CDT WED OCT 17 2018
SCATTERED SNOW SHOWERS AND ASSOCIATED MVFR CONDITIONS OVER FAR
NORTHERN WI SHOULD COME TO AN END BY MIDDAY. SKIES SHOULD CLEAR
DURING THE MID TO LATE AFTERNOON AS HIGH PRESSURE BUILDS IN FROM
THE WEST. GUSTY NORTHWEST WINDS WILL DIMINISH BY SUNSET.
GRB WATCHES/WARNINGS/ADVISORIES
NONE.
SHORT TERM.....KIECKBUSCH
LONG TERM......MG
AVIATION.......KIECKBUSCH
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