318
FXUS63 KAPX 011052
AFDAPX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GAYLORD MI
552 AM EST MON DEC 1 2025
KEY MESSAGES
-LOCALIZED HEAVY LAKE EFFECT SNOW ALONG THE LAKE MICHIGAN SHORELINE
THIS EVENING THROUGH TUESDAY MORNING.
-PERIODS OF LIGHT SNOWFALL CONTINUE ACROSS THE NORTHWOODS THROUGH
THE ENTIRETY OF THE FORECAST PERIOD.
-COLD TEMPERATURES IMPACT THE REGION THIS THURSDAY AND THURSDAY
NIGHT WITH NEAR ZERO APPARENT T'S.
SHORT TERM /THROUGH TONIGHT/
ISSUED AT 313 AM EST MON DEC 1 2025
PATTERN SYNOPSIS...LARGE SCALE CLOSED LOW PRESSURE OVER HUDSON BAY
WITH LONGWAVE MIDLEVEL TROUGHING SPANNED ACROSS THE NORTHERN HALF OF
THE U.S WILL CONTINUE TO KEEP COOL CP AIR OVER GREAT LAKES REGION.
AT THE SURFACE, HIGH PRESSURE WILL CONTINUE CYCLONIC ROTATION ACROSS
THE MIDWEST WITH A WEAK FRONTAL BOUNDARY STALLED OVER THE CWA. MESO-
SCALE LAKE EFFECT PROCESSES WILL BE SUPPORTED AS A RESULT WHILE THE
MAJORITY OF THE NORTHWOODS REMAINS COOL AND RELATIVELY QUIET.
FORECAST DETAILS...
TODAY...MAIN FOCUS FOR TODAYS FORCAST IS THE ONGOING LAKE EFFECT
SNOW WITH AS PERSISTENT NORTHWEST FLOW CONTINUES TO SPREAD A CLASSIC
MULTI-BAND SNOW SHOWERS ACROSS THE CLASSIC SNOWBELTS. SNOWFALL
INTENSITY FOR MUCH OF THE DAY REMAINS RELATIVELY MINOR AS LOW/
MIDLEVEL ATMOSPHERIC HUMIDITY IS PRETTY DRY FROM THE PREVIOUSLY
MENTIONED HIGH PRESSURE AND CP AIR MASS. ONLY ACCUMULATIONS WILL BE
AN ADDITIONAL TRACE FOR MOST OF THE SNOWBELTS WHILE INLAND PARTS OF
NORTHERN LOWER COULD SEE ANOTHER INCH OR SO OF 17:1 SNOWFALL FOR
PARTS OF OTSEGO, CRAWFORD, ANTRIM, OR KALKASKA COUNTIES.
TONIGHT...SURFACE HIGH PRESSURE WILL BEGIN TO BACK WINDS TO THE
SOUTHWEST THIS EVENING ALONG WITH THE PREVIOUSLY MENTIONED STATIONARY
BOUNDARY ADVECTING LOW LEVEL MOISTURE INTO NORTHERN MICHIGAN. MODEL
SOUNDINGS DEPICT A FAIRLY PROFILE THROUGH THE MIDLEVELS AND
RELATIVELY WEAK 925-700MB DIRECTIONAL SHEAR INDICATIVE TO SUPPORTING
LES BANDS RUNNING PARALLEL TO THE LAKE MICHIGAN SHORELINE. SNOWFALL
TOTALS WILL VARY DEPENDING ON COUNTY AND ITS FETCH, BUT HI-REZ
GUIDANCE DEPICTS SNOW TO ORGANIZE JUST AFTER 00Z AND IMPACTING AREAS
THE WORST NEAR AND NORTH OF LITTLE TRAVERSE BAY. HIGHEST
PROBABILITIES OF SNOWFALL RANGE FROM 3 TO 6 INCHES FOR SEVERAL
COUNTIES ALONG THE LAKE MICHIGAN SHORELINE, BUT PARTS OF EMMET COUNTY
COULD RECEIVE TOTALS OF 6-10" WITH LOCALIZED HIGHER TOTALS OF A FOOT
OR MORE IF PROPER CONVERGENCE FROM AN OVERNIGHT LAND BREEZE OCCURS.
THE REMAINDER OF THE CWA WILL SEE LESSER AMOUNTS WITH AN INCH LESS
OF SNOWFALL EXPECTED BY TUESDAY MORNING AS INTENSITY GREATLY
DIMINISHES OUTSIDE AREAS OF HIGHEST REFLECTIVITY.
LONG TERM /TUESDAY THROUGH SUNDAY/
ISSUED AT 313 AM EST MON DEC 1 2025
TUESDAY AND WEDNESDAY...MIDLEVEL TROUGHING PATTERN CONTINUES THROUGH
THE REMINDER OF THE FORECAST PERIOD. CURRENT GUIDANCE DEPICTS A
SHORTWAVE WITH CLOSED LOW PRESSURE TRACKING EASTWARD JUST NORTH OF
THE CWA WEDNESDAY MORNING WHILE WEAKENING WITH TIME. ENOUGH MOISTURE
WILL CONTINUE LIGHT SNOWFALL THROUGH WEDNESDAY NIGHT INTO THURSDAY
FROM THE FRONTAL PASSAGE AND WITH A NW FLOW LAKE RESPONSE. HIGHEST
PROBABILITIES OF SNOWFALL REMAIN AROUND 2-4" BY THURSDAY MORNING FOR
THE TYPICAL SNOWBELTS OF NORTHERN LOWER AND EASTERN UPPER.
THURSDAY AND FRIDAY... MIDLEVEL TROUGH AXIS WILL CONTINUE TO PIVOT
AROUND HUDSON BAY CENTERING ITS OVER THE GREAT LAKES REGION THIS
THURSDAY. TEMPERATURES AT THE SURFACE RESPOND WITH TEMPERATURES
DROPPING BELOW NORMAL FOR EARLY DECEMBER BEHIND THE COLD FRONT.
EXPECT WIDESPREAD HIGHS IN THE TEENS ACROSS NORTHERN MICHIGAN THIS
THURSDAY AND OVERNIGHT TEMPERATURES IN THE SINGLE DIGITS.
SATURDAY AND SUNDAY OUTLOOK...CONTINUED TROUGHING WITH EMBEDDED WAVES
WILL KEEP THE PATTERN SOMEWHAT ACTIVE THROUGH THE REMINDER OF THE
WEEK. LONG RANGE ENSEMBLES CONTINUE TO KEEP LOW PROBS OF SNOWFALL
THROUGH THE WEEKEND. NO EVIDENCE OF WIDESPREAD HEAVY PRECIPITATION
BUT THIS LONG SNOWY PATTERN WILL REMAIN IN PLACE AND DELIVER LIGHT
SNOW SHOWERS THIS WEEKEND AS WEAK HEAD INTO MID DECEMBER.
AVIATION /12Z TAFS THROUGH 12Z TUESDAY/
ISSUED AT 549 AM EST MON DEC 1 2025
LIGHT SNOW SHOWERS ACROSS PARTS OF NORTHERN MICHIGAN WILL DIMINISH
WITH TIME THIS MORNING AS VFR CONDITIONS PERSIST INTO THIS
AFTERNOON. LAKE EFFECT SNOW SHOWERS ARE EXPECTED TO DEVELOP ALONG
THE LAKE MICHIGAN SHORELINE LATER THIS AFTERNOON AND EVENING --
ESPECIALLY NEAR PLN. DROPS TO 1/4SM VSBY AT PLN ARE LIKELY,
BEGINNING BETWEEN 21Z MON AND 00Z TUE AND CONTINUING AT TIMES
FOR SEVERAL HOURS INTO TONIGHT. SNOWFALL RATES OF 1-2" PER HOUR
WILL BE POSSIBLE AT PLN WITH SNOWFALL AMOUNTS RANGING BETWEEN
8-12" OR MORE BY TUESDAY MORNING. OTHERWISE, MVFR CIGS ARE
EXPECTED AT MBL, TVC, AND PLN LATER TODAY AND THROUGH TONIGHT
WITH THIS ACTIVITY -- AND LOWER CIGS POSSIBLE WITH HEAVIEST LAKE
EFFECT SNOW. SOUTHWEST WINDS WILL INCREASE THROUGH THE MORNING,
GUSTING TO 15-20 KTS AT TIMES THROUGH THIS AFTERNOON.
APX WATCHES/WARNINGS/ADVISORIES
MI...WINTER STORM WARNING FROM 4 PM THIS AFTERNOON TO 8 AM EST
TUESDAY FOR MIZ016.
WINTER WEATHER ADVISORY FROM 4 PM THIS AFTERNOON TO 7 AM EST
TUESDAY FOR MIZ017-097-099.
WINTER WEATHER ADVISORY FROM 7 PM THIS EVENING TO 8 AM EST
TUESDAY FOR MIZ020-021-025-031.
WINTER WEATHER ADVISORY FROM 4 PM THIS AFTERNOON TO 8 AM EST
TUESDAY FOR MIZ088-096.
MARINE...NONE.
SHORT TERM...SJC
LONG TERM...SJC
AVIATION...DJC
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