506
FXUS63 KDLH 192338
AFDDLH
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE DULUTH MN
538 PM CST SUN JAN 19 2025
KEY MESSAGES
- ARCTIC COLD AND DANGEROUS WIND CHILLS WILL CONTINUE THROUGH
TUESDAY MORNING ACROSS THE NORTHLAND, AND AN EXTREME COLD
WARNING REMAINS IN EFFECT.
- LAKE EFFECT SNOW SHOWERS REMAIN POSSIBLE ALONG THE SOUTH
SHORE, WITH ADDITIONAL ACCUMULATIONS ACROSS NORTHERN BAYFIELD
COUNTY OF 2 TO 5 INCHES THROUGH TUESDAY.
DISCUSSION
ISSUED AT 237 PM CST SUN JAN 19 2025
ARCTIC AIRMASS REMAINS OVER THE NORTHLAND TODAY, WITH CURRENT
TEMPERATURES IN THE -5 TO -15F RANGE. ADD IN NORTHWESTERLY WINDS
AT 6 TO 12 MPH AND WIND CHILLS FALL AS LOW AS -30F. SURFACE HIGH
PRESSURE WILL REMAIN TO OUR WEST THROUGH TUESDAY WITH DEEP LAYER
NORTHWESTERLY TO NORTHERLY FLOW CONTINUING. A SHORTWAVE WILL
DROP SOUTHWARD OUT OF CENTRAL CANADA TOMORROW, BRINGING ANOTHER
PUSH OF COLD AIR WITH IT. EXPECT HIGH TEMPERATURES TOMORROW TO
BE A FEW DEGREES COLDER THAN TODAY, WITH TEMPERATURES MONDAY
NIGHT AS LOW AS -28F. THIS WILL ALLOW WIND CHILLS TO FALL INTO
THE -40 TO -50F RANGE. AN EXTREME COLD WARNINGS REMAINS IN
EFFECT UNTIL NOON TUESDAY.
WITH NORTHWESTERLY FLOW ACROSS WESTERN LAKE SUPERIOR, LAKE
EFFECT SNOW SHOWERS WILL REMAIN POSSIBLE ACROSS PORTIONS OF THE
SOUTH SHORE THROUGH TUESDAY. ADDITIONAL SNOW AMOUNTS OF 2 TO 5
INCHES ARE POSSIBLE, MAINLY ACROSS NORTHERN BAYFIELD COUNTY.
AS THE SHORTWAVE AXIS PUSHES TO THE EAST TUESDAY MORNING, WILL
START TO SEE WARM ADVECTION ALOFT AS LOW LEVEL WINDS TURN TO THE
SOUTH AND WEST. TEMPERATURES RETURN TO NORMAL VALUES FOR MID
JANUARY. ANOTHER SHORTWAVE AND COLD FRONT WORK THROUGH THE AREA
TUESDAY NIGHT AND WEDNESDAY. THIS PRESENTS AN OPPORTUNITY FOR
ISOLATED TO SCATTERED SNOW SHOWERS ACROSS PORTIONS OF THE
NORTHLAND. ACCUMULATIONS WILL BE LIMITED TO 1-2INCHES AS
MOISTURE RETURN AHEAD OF THE SYSTEM IS LIMITED. ANOTHER
OPPORTUNITY FOR ISOLATED TO SCATTERED SNOW SHOWERS ARRIVES
FRIDAY, AS A SHORTWAVE MOVES INTO THE UPPER MIDWEST. ALTHOUGH,
SNOW ACCUMULATIONS LOOK LIMITED TO JUST A COUPLE INCHES AT MOST.
AVIATION /00Z TAFS THROUGH 00Z TUESDAY/
ISSUED AT 536 PM CST SUN JAN 19 2025
SCATTERED TO BROKEN MVFR CEILINGS WILL PERSIST THIS TAF PERIOD,
ESPECIALLY AFTER 15Z. A FEW PERIODS OF OVERNIGHT MIST/HAZE IS
POSSIBLE IN FAR NORTHERN MINNESOTA TERMINALS SO A FEW TEMPO
MENTIONS WERE PLACED IN THOSE TAFS THIS ISSUANCE. WIDESPREAD
MVFR CEILINGS AND PERIODIC IFR VISIBILITY LIKELY ALONG THE
IMMEDIATE SOUTH SHORE FROM LAKE EFFECT SNOW SHOWERS.
MARINE /FOR NEAR SHORE WATERS OF WESTERN LAKE SUPERIOR/
ISSUED AT 237 PM CST SUN JAN 19 2025
COLD CONDITIONS WITH GUSTY NORTHWEST WINDS WILL PERSIST THROUGH
TUESDAY MORNING. WINDS WILL BACK SOUTHWESTERLY ON TUESDAY AND
WARMER AIR WILL MOVE INTO THE REGION, WITH WINDS INCREASING OVER
THE NEAR SHORE WATERS. CONDITIONS WILL REMAIN HAZARDOUS FOR
SMALL CRAFT THROUGH TUESDAY. ON WEDNESDAY EVENING AND THURSDAY
WINDS WILL VEER WESTERLY AND WEAKEN BRINGING AN END TO THE
HAZARDOUS CONDITIONS FOR A DAY OR TWO. STRONGER WINDS ARE
FORECAST TO RETURN BY THE WEEKEND.
FOR THE OPEN WATER DISCUSSION, REFER TO THE NWS MARQUETTE AREA
FORECAST DISCUSSION AT WEATHER.GOV/MQT.
DLH WATCHES/WARNINGS/ADVISORIES
MN...EXTREME COLD WARNING UNTIL NOON CST TUESDAY FOR MNZ010>012-
018>021-025-026-033>038.
WI...EXTREME COLD WARNING UNTIL NOON CST TUESDAY FOR WIZ001>004-
006>009.
MARINE...SMALL CRAFT ADVISORY UNTIL 4 AM CST TUESDAY FOR LSZ140>148-150.
DISCUSSION...HA
AVIATION...NLY
MARINE...HA
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