328
FXUS01 KWBC 101909
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
209 PM EST WED JAN 10 2024
VALID 00Z THU JAN 11 2024 - 00Z SAT JAN 13 2024
..UNSETTLED WEATHER CONDITIONS CONTINUE FOR THE WEST
...DANGEROUSLY COLD TEMPERATURES FOR THE NORTHERN ROCKIES AND
PLAINS THROUGH THIS WEEKEND...
THE SYSTEM THAT IMPACTED THE EASTERN U.S. YESTERDAY CONTINUES TO
MOVE NORTHEAST INTO SOUTHERN CANADA THIS AFTERNOON. ANY LINGERING
PRECIPITATION IN NEW ENGLAND SHOULD COME TO AN END TONIGHT, BUT
LIGHT SNOW SHOWERS WILL CONTINUE THROUGH THURSDAY FOR THE UPPER
MIDWEST AND GREAT LAKES REGIONS AS ANOTHER, WEAKER LOW PRESSURE
SYSTEM APPROACHES FROM THE WEST. WINDS HAVE REMAINED ELEVATED IN
THE WAKE OF THE STORM, BUT WIND SPEEDS WILL DECREASE TONIGHT AS
THE SYSTEM MOVES FARTHER AWAY.
IN THE WEST, UNSETTLED WEATHER IS FORECAST TO CONTINUE THROUGH THE
END OF THE WEEK AS A SERIES OF FRONTAL BOUNDARIES PUSH SOUTH
ACROSS THE REGION. THE COMBINATION OF HEAVY SNOW AND STRONG WINDS
WILL CREATE BLIZZARD CONDITIONS AT TIMES IN PARTS OF THE NORTHWEST
THROUGH THIS AFTERNOON, AND STORM TOTAL SNOW ACCUMULATIONS MAY
REACH SEVERAL FEET IN THE HIGHER ELEVATIONS OF THE CASCADES AND
OLYMPICS. LOW VISIBILITY WILL MAKE TRAVEL CONDITIONS PARTICULARLY
HAZARDOUS FOR MANY OF THE MOUNTAIN PASSES. THE NORTHWEST WILL SEE
LIGHTER PRECIPITATION TONIGHT INTO THURSDAY, THEN A PACIFIC LOW
PRESSURE SYSTEM WILL APPROACH AND HEAVY PRECIPITATION WILL RETURN
FRIDAY AND SATURDAY. HEAVY SNOW AND STRONG WINDS WILL ALSO SPREAD
SOUTH INTO THE SIERRA, GREAT BASIN, AND FOUR CORNERS REGIONS TODAY
AS A COLD FRONT PASSES THROUGH. SNOW SQUALLS WITH RAPIDLY CHANGING
VISIBILITY, OCCASIONAL WHITEOUTS, AND POSSIBLE FLASH FREEZES WILL
MAKE ROAD CONDITIONS DANGEROUS.
THE UPPER LEVEL DISTURBANCE AFFECTING THE GREAT BASIN AND FOUR
CORNERS REGION WILL SWING INTO THE CENTRAL U.S. THURSDAY INTO
FRIDAY, AND STRONG LOW PRESSURE WILL DEVELOP OVER THE SOUTHERN
PLAINS. THIS SYSTEM WILL TRACK TOWARDS THE MID-MISSISSIPPI VALLEY
FRIDAY AND INTO THE GREAT LAKES REGION SATURDAY. THIS WILL LIKELY
BE AN IMPACTFUL WINTER STORM FROM THE CENTRAL PLAINS TO THE GREAT
LAKES, AND THERE IS A HIGH PROBABILITY (GREATER THAN 70% CHANCE)
THAT SNOWFALL WILL EXCEED 4 INCHES FROM SOUTHEAST NEBRASKA TO
MICHIGAN. CONSIDERABLE IMPACTS FROM BLOWING SNOW AND DRIFTING SNOW
IN STRONG WINDS ARE ALSO POSSIBLE.
THE COLDEST AIR OF THE SEASON SO FAR WILL FILTER INTO THE CENTRAL
U.S. THROUGH THIS WEEKEND AS A COLD FRONT GRADUALLY MOVES SOUTH
ACROSS THE REGION AND STRONG HIGH PRESSURE BUILDS TO THE NORTH.
THIS PATTERN WILL CREATE A TIGHT PRESSURE GRADIENT, WHICH WILL
RESULT IN DANGEROUSLY COLD WIND CHILLS. THE COLDEST DAYS WILL BE
FRIDAY AND SATURDAY WHEN HIGH TEMPERATURES IN THE NORTHERN ROCKIES
AND NORTHERN PLAINS WILL BE AS LOW AS 10-20 DEGREES BELOW ZERO. IN
THE CENTRAL PLAINS, HIGH TEMPERATURES WILL ONLY REACH THE SINGLE
DIGITS AND TEENS. WIND CHILLS WILL MAKE CONDITIONS PARTICULARLY
DANGEROUS WITH THE COLDEST WIND CHILLS REACHING 40-60 DEGREES
BELOW ZERO FOR THE NORTHERN ROCKIES AND NORTHERN PLAINS AND 30-40
DEGREES BELOW ZERO FOR THE CENTRAL PLAINS. WIDESPREAD WIND CHILL
ADVISORIES AND WIND CHILL WATCHES ARE IN EFFECT. FROSTBITE AND
HYPOTHERMIA WILL BE CONCERNS IF PRECAUTIONS ARE NOT TAKEN WHEN
OUTSIDE OR TRAVELING.
DOLAN
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