214
FXUS63 KMQT 171347
AFDMQT
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MARQUETTE MI
847 AM EST FRI JAN 17 2025
KEY MESSAGES
- BLUSTERY SOUTHERLY WINDS DEVELOP TODAY, TURNING TO THE NW
TONIGHT BEHIND A PASSING COLD FRONT. WIND GUSTS UP TO
40-50MPH WILL BE POSSIBLE NEAR THE SHORELINES OF MARQUETTE,
ALGER, AND LUCE COUNTIES LATER THIS MORNING THROUGH THE
AFTERNOON, AND ACROSS THE KEWEENAW TONIGHT.
- LAKE EFFECT SNOW DEVELOPS ACROSS THE NW WIND BELTS TONIGHT,
WITH 1-3 INCHES OF SNOW ACCUMULATIONS BY THE MORNING. GUSTY
WINDS MAY LEAD TO BLOWING SNOW AND REDUCED VISIBILITY.
- DANGEROUSLY COLD ARCTIC AIR SETTLES INTO THE AREA THIS WEEKEND
INTO EARLY NEXT WEEK, LEADING TO TEMPERATURES REMAINING
SUBZERO FROM SATURDAY NIGHT THROUGH AT LEAST TUESDAY MORNING
OVER INTERIOR WESTERN UPPER MICHIGAN. MUCH OF THE REST OF WEST
AND CENTRAL UPPER MICHIGAN MAY SEE TEMPERATURES FAIL TO RISE
ABOVE ZERO ON MONDAY AND MAYBE TUESDAY.
- HOMEOWNERS AND PROPERTY MANAGERS SHOULD TAKE ACTION NOW FOR
THIS COLD PERIOD, ESPECIALLY IF PAST VERY COLD PERIODS HAVE
YIELDED IMPACTS. ENSURE YOUR WINTER CAR SURVIVAL KIT IS UP-TO-
DATE. THIS WEEKEND THROUGH TUESDAY, LIMIT TIME OUTDOORS FOR
YOU AND YOUR PETS, AND CHECK ON VULNERABLE NEIGHBORS.
- FREQUENT WHITEOUTS ARE EXPECTED IN THE NORTHWEST WIND SNOW
BELTS SATURDAY THROUGH TUESDAY MORNING DUE TO THE FALLING SNOW
BEING A FINE, POWDERY TYPE SNOW THAT IS HIGHLY EFFECTIVE AT
REDUCING VISIBILITY. EXPECT VERY HAZARDOUS DRIVING CONDITIONS IN
THE LAKE EFFECT SNOW AREAS.
- NO WIDESPREAD, SIGNIFICANT SNOWFALLS FOR UPPER MI THROUGH NEXT WEEK.
NEARLY ALL OF THE SNOW THAT OCCURS WILL BE LAKE EFFECT DRIVEN.
UPDATE
ISSUED AT 632 AM EST FRI JAN 17 2025
THE FORECAST REMAINS ON TRACK THIS MORNING. WINDS ARE BEGINNING TO
PICK UP OUT OF THE SOUTH THIS MORNING AS THE DEEP 988MB CLIPPER LOW
IS MOVING JUST NORTH OF THE MN/ON BORDER, WITH A BLUSTERY DAY AHEAD.
ASCENT OUT AHEAD OF THE CLIPPER HAS BROUGHT AN INCREASE IN CLOUD
COVER THROUGH THE NIGHT, AND SPORADIC WEAK RADAR RETURNS ARE
STREAMING ACROSS THE UP. WITH DRY LOWER-MIDLEVEL AIR IN PLACE,
NOTHING IS REACHING THE GROUND JUST YET, BUT SOME LIGHT SNOW
ACCUMULATIONS ARE ANTICIPATED ACROSS THE EASTERN UP BEGINNING LATER
THIS MORNING.
SHORT TERM /THROUGH TONIGHT/
ISSUED AT 327 AM EST FRI JAN 17 2025
EARLY THIS MORNING, THE MIDLEVEL RIDGE AXIS IS DIRECTED RIGHT OVER
THE UP/WI/LAKE SUPERIOR, WITH A DEEPENING CLIPPER LOW ANALYZED OVER
SOUTHERN MANITOBA. AT LOWER LEVELS, A TIGHTENING PRESSURE GRADIENT
IS LEADING TO INCREASING SOUTHERLY FLOW AHEAD OF THE CLIPPER, WITH
AN IMPRESSIVE 40-50KT LLJ ANALYZED OVER MINNESOTA. WAA/ISENTROPIC
ASCENT INTO THE UP IS BRINGING AN INCREASE IN MIDLEVEL CLOUD COVER,
AND SOME WEAK RADAR RETURNS ARE EVEN POPPING UP ACROSS THE WESTERN
HALF OF THE UP. HOWEVER, 00Z SOUNDINGS OUT OF GRB AND MPX SHOW VERY
DRY LOWER AND MIDLEVELS, AND MODEL SOUNDINGS FAVOR THIS THE REST OF
THE NIGHT ACROSS THE WESTERN HALF OF THE UP. THIS WILL MAKE IT HARD
FOR ANY PRECIPITATION TO BE REALIZED AT THE SURFACE THE REST OF THE
NIGHT. OTHERWISE, EXPECT TEMPERATURES TO HOVER IN THE TEENS/LOW 20S,
OR PERHAPS EVEN RISE SLIGHTLY WITH WARMER AIR STREAMING INTO THE
AREA. WINDS BEGIN TO PICK UP OVER THE NEXT COUPLE OF HOURS ACROSS
THE WESTERN UP, WITH GUSTS POSSIBLY AS HIGH AS 20-30MPH IN THE
HIGHER TERRAIN BEFORE SUNRISE.
BY THE MORNING, DEEP MOISTURE WILL BE PRESENT ACROSS THE EASTERN UP
WHILE THE EXIT REGION OF THE LLJ BECOMES DIRECTED OVER THE AREA. WE
THUS STAND A BETTER CHANCE AT SEEING LIGHT SNOW THERE, ESPECIALLY
WITH SOME ENHANCEMENT OFF OF LAKE MICHIGAN. STILL, AMOUNTS SHOULD
GENERALLY COME IN BELOW AN INCH. MAINLY DRY CONDITIONS PERSIST
ACROSS THE REST OF THE UP BEFORE THE COLD FRONT MOVING THROUGH LATE
IN THE DAY SHIFTS WINDS TO THE W AND EVENTUALLY NW, KICKING OFF A
ROUND OF LAKE EFFECT. MEANWHILE, SOUTHERLY WINDS TURN QUITE BLUSTERY
AHEAD OF THE APPROACHING COLD FRONT. 20-35MPH GUSTS WILL BE COMMON
ACROSS THE UP, WITH HIGHER GUSTS TO 40MPH POSSIBLE AS WELL IN THE
HIGHER TERRAIN AND IN THE EASTERN UP. EVEN STRONGER GUSTS AROUND
45MPH ARE EXPECTED IN THE DOWNSLOPING AREAS NEAR SUPERIOR ACROSS
MARQUETTE AND ALGER COUNTIES, AND POTENTIALLY LUCE COUNTY AS WELL,
WITH SOME OF THE HI-RES GUIDANCE STILL SHOWING A POTENTIAL TO MIX
INTO THE 45-50KT LAYER. WITH THAT, A WIND ADVISORY REMAINS IN EFFECT
FOR MARQUETTE AND ALGER COUNTIES LATER THIS MORNING THROUGH THIS
AFTERNOON, AND WILL ADD IN LUCE COUNTY AS WELL.
THE AFOREMENTIONED COLD FRONT BEGINS TO MOVE INTO THE WESTERN UP BY
THE EARLY EVENING, PASSING THROUGH THE AREA THE FIRST HALF OF THE
NIGHT. THIS WILL BRING A RAPID DROP IN TEMPERATURES, WITH ALL BUT
THE FAR EASTERN UP IN THE SINGLE DIGITS BY SUNRISE. WINDS SHIFTING
TO THE NW WILL REMAIN BLUSTERY GIVEN RAPID PRESSURE RISES, WITH 20-
30MPH GUSTS COMMON ACROSS THE UP AND HIGHER GUSTS TO 40MPH EXPECTED
NEARER THE SUPERIOR SHORELINES. ACROSS THE KEWEENAW, MIXED LAYER
WINDS UP TO 40-50MPH WILL LEAD TO BETTER CHANCES FOR STRONGER WIND
GUSTS THERE - PARTICULARLY ALONG THE WESTERN SIDE AND ALONG THE
SPINE. WILL ISSUE A WIND ADVISORY FOR THE KEWEENAW THE FIRST HALF OF
THE NIGHT, AFTER WHICH WINDS ALOFT START TO SLACKEN.
LES KICKS OFF IN THE NW WIND BELTS TONIGHT AS WELL, THOUGH A SHALLOW
(AROUND 2KFT) DGZ GRADUALLY DESCENDING TO THE SURFACE WITH SUCH A
CHILLY AIRMASS WORKING IN WILL LIMIT SNOW RATIOS SOMEWHAT. WILL CAP
THOSE AROUND 20:1, IN LINE WITH MUCH OF THE GUIDANCE. THIS YIELDS A
GOOD 1-3IN OF SNOWFALL IN THE NW WIND BELTS OF THE WESTERN AND
EASTERN UP BY SUNRISE, WITH LIGHTER AMOUNTS BELOW AN INCH STILL
EXTENDING PRETTY FAR INLAND INTO THE CENTRAL UP.
LONG TERM /SATURDAY THROUGH THURSDAY/
ISSUED AT 847 AM EST FRI JAN 17 2025
MEDIUM RANGE MODEL GUIDANCE REMAINS IN EXCELLENT AGREEMENT ON THE
LARGE SCALE SURGE OF ARCTIC AIR INTO THE U.S. THIS WEEKEND INTO
EARLY NEXT WEEK. THIS SURGE OF ARCTIC AIR WILL BE DRIVEN BY A
BUILDING RIDGE OVER THE NE PACIFIC THAT BECOMES HIGHLY AMPLIFIED
NORTHWARD THROUGH ALASKA/NW CANADA INTO THE HIGH ARCTIC OVER THE
WEEKEND, FORCING A SIGNIFICANTLY DEEPENING MID-UPPER LEVEL TROUGH
DOWNSTREAM ACROSS CENTRAL TO EASTERN N AMERICA. NEGATIVE HEIGHT
ANOMALIES AT 500MB IN THIS MID-LEVEL TROUGH SETTLE AT ~320M (2.2-2.6
SIGMA) OVER WI ON MON. OVER THE LAST 24-48 HRS OF MODEL RUNS,
ENSEMBLES HAVE SETTLED ON 850MB TEMPS DROPPING TO -30 TO -32C INTO
WESTERN UPPER MI IN THE CORE OF THE COLD AIR AS IT REACHES UPPER MI.
850MB TEMPS THAT LOW AT THIS TIME OF YEAR VERY EASILY SUPPORT 2M
TEMPS REMAINING SUBZERO DURING THE DAYLIGHT HRS ACROSS INTERIOR
WESTERN UPPER MI AND LIKELY THRU MUCH OF CENTRAL UPPER MI AS WELL.
IN ADDITION, WITH 850MB TEMPS AT -30C TO -32C AT LOWEST, WOULD
EXPECT TEMPS DURING THE DAYLIGHT HRS OVER INTERIOR WESTERN UPPER MI
(GENERALLY IRONWOOD TO IRON RIVER AREA) TO STRUGGLE TO GET ABOVE -
10F SUN/MON, MON IN PARTICULAR AS THE CORE OF THE COLDEST AIR PASSES
ON THAT DAY, LEADING TO THE COLDEST DAY FCST AREA WIDE. ONCE TEMPS
FALL BLO 0F OVER INTERIOR WESTERN UPPER MI SAT NIGHT, THEY PROBABLY
WON'T RISE ABOVE 0F UNTIL SOMETIME WEDNESDAY. WITH THE EXCEPTION OF
AREAS FROM MENOMINEE TO ESCANABA, MANISTIQUE AND NEWBERRY, AND ALONG
THE LAKE SUPERIOR SHORE WHERE W TO NW WINDS ARE ONSHORE, MUCH OF THE
REST OF THE FCST AREA MAY REMAIN BLO 0F MON AND POTENTIALLY TUE. MIN
TEMPS WILL RANGE DOWN THRU THE NEGATIVE TEENS AND -20S F AWAY FROM
LAKE SUPERIOR. TEMPS WILL EVEN FALL SUBZERO TO LAKE SUPERIOR, EXCEPT
WHERE W TO NW WINDS ARE ONSHORE. THERE IS THE POTENTIAL FOR A
MORNING OR TWO WITH AIR TEMPS FALLING TO OR BLO -30F IN IRON COUNTY,
MAYBE GOGEBIC COUNTY, BUT THAT WILL DEPEND ON WHETHER SFC WINDS
LARGELY DECOUPLE. SEEMS UNLIKELY, BUT SUN NIGHT AND MON NIGHT WOULD
BE THE NIGHTS TO WATCH. RECORD LOW MIN AND RECORD LOW MAX TEMPS MAY
BE SET ACROSS UPPER MI WITH THIS ARCTIC OUTBREAK, ESPECIALLY ON
OVER THE WESTERN INTERIOR, WHICH IS SUPPORTED BY THE ECMWF EXTREME
FORECAST INDEX VALUES APPROACHING -1 EARLY NEXT WEEK. HOMEOWNERS AND
PROPERTY MANAGERS WHO HAVE HAD ISSUES WITH WATER PIPES FREEZING
DURING PERIODS OF VERY COLD CONDITIONS SHOULD MAKE PREPARATIONS NOW.
AREAS THAT HAVE VERY LITTLE SNOW COVER COULD ALSO BECOME AT RISK FOR
FREEZING OF WATER SUPPLY LINES EARLY NEXT WEEK AS GROUND FROST
DEPTHS DEEPEN RAPIDLY.
FORTUNATELY, WINDS WON'T BE STRONG TO REALLY DRIVE WIND CHILLS DOWN
DURING THIS THE ARCTIC OUTBREAK. NONETHELESS, THE COLD WILL BE
DANGEROUS, AND EXPECT CONDITIONS TO WARRANT COLD WEATHER ADVISORIES.
A FEW EXTREME COLD WARNINGS WILL BE POSSIBLE INTERIOR W. EVEN LIGHT
WINDS COULD RESULT IN CONDITIONS FEELING LIKE -20 TO -40. THESE
CONDITIONS CAN RESULT IN HYPOTHERMIA AND FROSTBITE IN LESS THAN 30
MINUTES. ANYONE WITH OUTSIDE PLANS IN THIS PERIOD SHOULD LIMIT TIME
OUTSIDE. EVERYONE IS ENCOURAGED TO ENSURE THEIR WINTER CAR SURVIVAL
KIT IS UP TO DATE. CHECK ON VULNERABLE NEIGHBORS AND LIMIT OUTDOOR
TIME FOR PETS.
AS FOR PCPN, THIS PATTERN WILL NOT SUPPORT ANY WIDESPREAD,
SIGNIFICANT SNOWFALLS FOR UPPER MI THROUGH NEXT WEEK AS ONLY A FEW
CLIPPER TYPE WAVES WILL GENERATE SOME BRIEF PERIODS OF -SN. SO,
SNOWFALL WILL BE ALMOST EXCLUSIVELY LAKE EFFECT DRIVEN. WHILE THE
ARCTIC AIR ARRIVING OVER THE WEEKEND/EARLY NEXT WEEK WILL LEAD TO
EXTREME OVERLAKE INSTABILITY, THE EXTREME COLD WILL ALSO SQUASH THE
DGZ TOWARD THE SFC OR ELIMINATE IT ALTOGETHER, LEADING TO THE
FORMATION OF PLATE AND COLUMNAR SNOW CRYSTALS, RESULTING IN A
FINE/POWDERY TYPE SNOW (LOW SLR) THAT DOES NOT ACCUMULATE AS
EFFICIENTLY. ON THE FLIP SIDE, THESE TYPE OF SNOW CRYSTALS ARE
EASILY LOFTED BY WIND AND ARE, THUS, HIGHLY EFFECTIVE AT REDUCING
VISIBILITY, LEADING TO FREQUENT WHITEOUTS IN SNOW SHOWERS. THIS TYPE
OF SNOW IS ALSO EASILY KICKED UP ON ROADS BY VEHICLES, LEADING TO
MINI-WHITEOUTS FOR TRAILING VEHICLES. TRAVEL IN THE AREAS AFFECTED
BY NW FLOW LES SAT THRU TUE WILL BE VERY HAZARDOUS DUE TO POOR
VISIBILITY. FROM TUE ONWARD, FLOW ACROSS N AMERICA DEAMPLIFIES, BUT
THERE WILL CONTINUE TO BE SOME DEGREE OF RIDGING IN THE MEAN OVER
THE NE PACIFIC/ADJACENT N AMERICA FORCING MID-LEVEL TROUGHING INTO
CENTRAL AND EASTERN N AMERICA. THE DEAMPLIFICATION WILL ALLOW FOR
MODERATION FROM THE EARLY WEEK BITTER COLD, BUT THE PATTERN WILL
STILL SUPPORT THE POTENTIAL FOR COLDER AIR TO AT LEAST GRAZE UPPER
MI WITH THE PASSAGE OF CLIPPER TYPE SHORTWAVES. EXPECT TEMPS ON MOST
DAYS DURING THE LAST HALF OF NEXT WEEK TO BE BLO NORMAL.
COLD ADVECTION ON SATURDAY IN THE WAKE OF TONIGHT'S FROPA WILL
INITIATE LES AND LEAD TO PROGRESSIVELY COLDER AIR FLOWING INTO THE
AREA THRU THE WEEKEND ON PREDOMINANTLY NW LOW-LEVEL FLOW. TEMPS WILL
PLUMMET THROUGH THE DAY ON SATURDAY AS 850MB TEMPS FALL FROM AROUND
-10C E TO -15C W AT MIDNIGHT TONIGHT TO TO AROUND -22C E TO -25C W
BY SATURDAY EVENING. BY SUNSET SATURDAY, TEMPS SHOULD BE NEARING 0F
W TO AROUND 10F ABOVE E. THE INCREASINGLY COLDER AIR SURROUNDING THE
LAKE WILL PROGRESSIVELY STRENGTHEN LAKE-INDUCED THERMAL TROUGHING,
LEADING TO WINDS DEVELOPING AN OFFSHORE COMPONENT, PARTICULARLY OFF
OF NW WI, OFF OF MARQUETTE COUNTY AND OFF OF ONTARIO ALONG THE E
SIDE OF LAKE SUPERIOR. THIS WILL FAVOR ENHANCED CONVERGENCE INTO
ONTONAGON/SOUTHERN HOUGHTON COUNTIES AND ALSO INTO ALGER/LUCE
COUNTIES. EXPECT LES TO BE MOST PERSISTENT/HEAVIER IN THOSE AREAS.
HOWEVER, BY LATER SAT AND THRU TUE, THE COLD WILL SUPPRESS THE DGZ
TO NEAR THE SFC OR ELIMINATE IT ALTOGETHER, LEADING TO A
FINE/POWDERY TYPE SNOW THAT DOES NOT ACCUMULATE AS EFFICIENTLY AS
TYPICAL LES. INITIAL THOUGHTS ARE THAT SNOW ACCUMULATIONS WILL END
UP IN A 2-4 TO LOCALLY 6 INCH RANGE ON SATURDAY BEFORE THE ARCTIC
AIR LARGELY ELIMINATES THE DGZ. THEN, A GENERAL 1-3 TO ISOLD 4-5
INCHES/12HR RANGE IS EXPECTED SAT NIGHT THRU TUE. THE HIGHER AMOUNTS
ARE MORE LIKELY IN EASTERN PORTIONS OF ALGER INTO LUCE COUNTIES DUE
TO LONGER FETCH AND BECAUSE THE OFFSHORE WIND COMPONENT OFF OF
ONTARIO OFTEN LEADS TO PARTICULARLY STRONG LOW-LEVEL CONVERGENCE.
BIGGER ISSUE WITH THE SNOW WILL BE WHITEOUTS AS PREVIOUSLY
DISCUSSED. WINDS WILL BE STRONGER ON SAT, LEADING TO BLOWING SNOW,
BUT DURING THE COLDEST PERIOD SUN INTO TUE, WINDS WON'T BE
PARTICULARLY STRONG, GUSTING TO AROUND 25MPH NEAR THE LAKE SUPERIOR
SHORE AND KEWEENAW AND UP TO AROUND 20MPH ELSEWHERE. EVEN SO, THE
FINE/POWDERY SNOW WILL BE EASILY LOFTED BY THESE WINDS TO FURTHER
REDUCE THE ALREADY VERY POOR VISIBILITY FROM THE FALLING SNOW.
WINDS BEGIN TO BACK WESTERLY TUE WITH ONSET OF WAA, SHIFTING LES TO
MAINLY THE KEWEENAW OVER THE W AND CLOSER TO SHORE OVER THE E.
MODELS HINT AT A WEAK CLIPPER TYPE SHORTWAVE PASSING AT SOME POINT
WED/THU TO PROVIDE A CHC OF -SN, FOLLOWED BY SOME LES. A FEW OF THE
MEDIUM RANGE MODELS SUGGEST PERHAPS ANOTHER CLIPPER SYSTEM COULD
MOVE THROUGH NEXT WEEKEND TO REINFORCE THE COLD AIR MASS ACROSS THE
REGION AND REINVIGORATE NW FLOW LES ONCE AGAIN.
AVIATION /12Z TAFS THROUGH 12Z SATURDAY/
ISSUED AT 632 AM EST FRI JAN 17 2025
VFR PREVAILS THIS MORNING BEFORE CEILINGS LOWER TO MVFR DURING THE
AFTERNOON AND EVENING AT ALL TERMINALS. BLOWING SNOW MAY BRING IN
SOME VISIBILITY RESTRICTIONS AT CMX AT TIMES THIS AFTERNOON, BUT
THEN MVFR/IFR VISIBILITY SETS IN AT CMX AND POTENTIALLY IWD TONIGHT
WITH LAKE EFFECT SNOW DEVELOPING IN THE NW WIND BELTS. SAW SHOULD
MISS OUT ON SNOW FOR THE MOST PART AS THIS IS A LESS FAVORABLE WIND
DIRECTION FOR PROLONGED LAKE EFFECT THERE. SOUTH-SOUTHWEST WINDS
INCREASE THIS MORNING, WITH GUSTS UPWARDS OF 25-30KTS POSSIBLE AT
ALL SITES THROUGH THE AFTERNOON. WINDS REMAIN ELEVATED TONIGHT WHILE
SHIFTING TO THE NW. THE UPTICK IN WINDS ALOFT WILL ALSO BRING
POTENTIAL LOW LEVEL WIND SHEAR IMPACTS MAINLY AT IWD, BUT
POTENTIALLY AT CMX AS WELL.
MARINE
ISSUED AT 847 AM EST FRI JAN 17 2025
A COUPLE OF PASSING CLIPPERS WILL RESULT IN A STRONG PRESSURE
GRADIENT OVER THE LAKE AT TIMES IN THIS PERIOD, FOLLOWED BY
DEEPENING ARCTIC COLD THIS WEEKEND INTO EARLY NEXT WEEK.
WINDS SHIFT SHARPLY TO THE SOUTH EARLY THIS MORNING AS THE NEXT
CLIPPER SYSTEM APPROACHES THE REGION. SOUTHERLY WINDS WILL INCREASE
TO GALES TO 40-45 KTS ACROSS THE LAKE BY LATE FRI MORNING, HIGHEST
OVER THE EAST HALF, WHERE STRONG PRESSURE FALLS PASS OVER THE AREA
WITH THE MAX PRES FALLS PASSING BY JUST N OF THE LAKE. GUIDANCE
INDICATES THERE IS A 15-30 PCT CHANCE OF PEAK GUSTS REACHING STORM
FORCE OVER THE NE PORTIONS OF THE LAKE LATE THIS MORNING. AFTER THE
COLD FRONT ASSOCIATED WITH THE CLIPPER CROSSES THE LAKE LATE THIS
AFTERNOON INTO TONIGHT, NW GALES WILL DEVELOP AS COLDER AIR FLOWS
INTO THE AREA WITH WINDS ENHANCED BY INCOMING PRESSURE RISES.
ANOTHER HIGH END GALE WILL OCCUR WITH THE NW WINDS, INCLUDING A 15-
30PCT CHANCE OF PEAK GUSTS REACHING STORM FORCE OVER THE NORTHERN
PART OF THE LAKE TONIGHT. THESE STRONGER WINDS WILL DIMINISH LATER
IN THE DAY SATURDAY, BUT INCREASINGLY COLDER AIR FLOWING OVER THE
LAKE WILL STILL SUPPORT 20-30KT WINDS LATE SAT. THERE IS ALSO SOME
LOCAL GALE POTENTIAL WHERE WNW/NW WINDS OVER THE LAKE CONVERGE WITH
WINDS LOCALLY ALTERED BY VERY COLD AIR FLOWING OFF OF THE LAND.
THERE ARE SOME INDICATIONS FOR ANOTHER CLIPPER MIDDLE TO THE END OF
NEXT WEEK, WHICH COULD INCREASE WINDS AGAIN.
THE INCREASINGLY COLDER AIR ARRIVING OVER WEEKEND WILL SUPPORT ICE
ACCRETION FROM FREEZING SPRAY. EXPECTING MODERATE TO HEAVY ICE
ACCRETION RATES AT TIMES.
MQT WATCHES/WARNINGS/ADVISORIES
UPPER MICHIGAN...
WIND ADVISORY FROM 5 PM THIS AFTERNOON TO 3 AM EST SATURDAY
FOR MIZ001-003.
WIND ADVISORY UNTIL 3 PM EST THIS AFTERNOON FOR MIZ005-006.
WIND ADVISORY UNTIL 4 PM EST THIS AFTERNOON FOR MIZ007.
LAKE SUPERIOR...
GALE WARNING UNTIL 1 PM EST /NOON CST/ SATURDAY FOR LSZ162-
240>248-263-264.
HEAVY FREEZING SPRAY WARNING FROM 1 AM EST /MIDNIGHT CST/
SATURDAY TO 1 PM EST /NOON CST/ SUNDAY FOR LSZ162-240>242-
263.
HEAVY FREEZING SPRAY WARNING FROM 1 AM SATURDAY TO 7 PM EST
MONDAY FOR LSZ243>251-264>267.
GALE WARNING UNTIL 7 PM EST SATURDAY FOR LSZ249>251-265>267.
LAKE MICHIGAN...
GALE WARNING UNTIL 7 PM EST THIS EVENING FOR LMZ221-248-250.
UPDATE...LC
SHORT TERM...LC
LONG TERM...VOSS
AVIATION...LC
MARINE...VOSS
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