138
FXUS01 KWBC 161952
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
252 PM EST TUE JAN 16 2024
VALID 00Z WED JAN 17 2024 - 00Z FRI JAN 19 2024
...HEAVY MOUNTAIN SNOWS FOR THE NORTHWEST/ROCKIES; ICE STORM FOR
PORTIONS OF THE PACIFIC NORTHWEST...
...BANDS OF HEAVY LAKE-EFFECT SNOW CONTINUE FOR THE GREAT LAKES AS
SNOW TAPERS OFF IN THE NORTHEAST...
...A RETURN TO MORE TYPICAL WINTER TEMPERATURES FOR MANY WEDNESDAY
AFTER THE BRUTAL COLD; ANOTHER ARCTIC BLAST EXPECTED LATE THIS
WEEK...
IMPACTFUL WINTER WEATHER WILL CONTINUE FOR THE NORTHWEST AS A
BACK-TO-BACK SERIES OF PACIFIC STORM SYSTEMS BRINGS ADDITIONAL
ROUNDS OF MOISTURE INTO THE REGION WITH A STUBBORNLY COLD AIRMASS
IN PLACE. PRECIPITATION CHANCES WILL INCREASE ACROSS THE PACIFIC
NORTHWEST TUESDAY EVENING AND SPREAD FURTHER INLAND INTO THE
NORTHERN GREAT BASIN AND NORTHERN/CENTRAL ROCKIES WEDNESDAY. THE
HEAVIEST SNOWS ARE EXPECTED IN THE CASCADES, NORTHERN ROCKIES,
WASATCH, AND PORTIONS OF THE CENTRAL ROCKIES IN COLORADO, WHERE
STORM TOTAL SNOWFALL OVER A FOOT IS LIKELY AND RATES MAY EXCEED 2"
PER HOUR AT TIMES. THE APPROACHING STORM SYSTEMS AS WELL AS A
LINGERING FRONTAL BOUNDARY WILL BRING SOME HEAVY SNOWS TO AREAS OF
THE NORTHERN HIGH PLAINS EAST OF THE ROCKIES AS WELL, PARTICULARLY
FOR MONTANA WHERE TOTALS OF AROUND 6-8", LOCALLY HIGHER, ARE
EXPECTED. INLAND LOWER ELEVATION/VALLEY LOCATIONS OF THE GREAT
BASIN AND ROCKIES WILL SEE LOWER AMOUNTS, WITH SOME ACCUMULATIONS
OF AROUND 2-4" POSSIBLE. IN ADDITION, SIGNIFICANT ICING IS
EXPECTED FOR PORTIONS OF NORTHWESTERN OREGON AND SOUTHWESTERN
WASHINGTON, CENTERED ON THE WILLAMETTE AND COLUMBIA RIVER VALLEYS.
ICE ACCRETIONS GENERALLY BETWEEN 0.25-0.5" ARE FORECAST, WITH TREE
DAMAGE AND POWER OUTAGES LIKELY. COASTAL AREAS WILL SEE MODERATE
TO LOCALLY HEAVY RAINFALL, WITH AN ISOLATED THREAT OF SOME
FLOODING. PRECIPITATION CHANCES FOR MOST OF THE REGION SHOULD
TREND DOWN THROUGH THE DAY THURSDAY INTO THURSDAY NIGHT, WITH THE
EXCEPTION OF THE PACIFIC NORTHWEST WHERE THE INFLUX OF PACIFIC
MOISTURE WILL CONTINUE.
THE LOW PRESSURE SYSTEM RESPONSIBLE FOR THE FIRST SNOWFALL OF THE
YEAR (IF NOT LONGER) FOR MANY IN THE MID-ATLANTIC TUESDAY WILL
CONTINUE TO BRING SNOWFALL TO PORTIONS OF NEW ENGLAND THROUGH
TUESDAY NIGHT. ADDITIONAL SNOW TOTALS SHOULD GENERALLY RANGE
BETWEEN 1-3", EXCEPT FOR CENTRAL AND NORTHERN MAINE WHERE HEAVIER
TOTALS UPWARDS OF 6-12" ARE EXPECTED. SNOW CHANCES WILL CONTINUE
TO THE WEST FOR THE GREAT LAKES WHERE COLD, NORTHWESTERLY FLOW
WILL BRING BANDS OF HEAVY LAKE-EFFECT SNOW, PARTICULARLY DOWNWIND
OF LAKES ERIE AND ONTARIO. LAKE-EFFECT SNOW WARNINGS ARE IN PLACE
FOR TOTALS BETWEEN 1-3 FEET THROUGH THURSDAY NIGHT. ANOTHER SYSTEM
SHOULD BRING A RENEWED ROUND OF AT LEAST SOME LIGHT SNOW CHANCES
TO THE MIDWEST THURSDAY.
TEMPERATURES REMAIN FRIGID TUESDAY ACROSS MUCH OF THE
CENTRAL/EASTERN U.S. WIDESPREAD WIND CHILL WARNINGS ARE IN PLACE
THROUGH WEDNESDAY MORNING FOR MUCH OF THE MIDWEST AND SOUTH AS
WIND CHILLS WILL PLUMMET BELOW 0 ONCE AGAIN. A BROAD AREA OF HARD
FREEZE WARNINGS ARE ALSO IN PLACE FOR PORTIONS OF THE SOUTH,
PARTICULARLY ALONG THE GULF COAST, WHERE WEDNESDAY MORNING LOWS IN
THE TEENS BRING MUCH HIGHER CHANCES OF DAMAGE TO SENSITIVE
VEGETATION AND WATER PIPES.
A BRIEF REPRIEVE FROM THE FRIGID AIR IS EXPECTED AS THE AIRMASS
MODERATES WEDNESDAY, BRINGING TEMPERATURES BACK CLOSER TO
WINTER-TIME AVERAGES. A TRUE WARM UP IS IN STORE FOR SOUTHERN
TEXAS AND EASTWARD ALONG THE GULF COAST WHERE HIGHS WILL RETURN TO
THE 60S AND 70S THURSDAY. UNFORTUNATELY, ANOTHER ARCTIC BLAST IS
EXPECTED TO QUICKLY FOLLOW THIS ONE, WITH MUCH BELOW AVERAGE,
FRIGID TEMPERATURES BEGINNING TO SPREAD SOUTHWARD ACROSS THE
NORTHERN AND CENTRAL PLAINS THURSDAY.
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