073
FXUS01 KWBC 020801
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
300 AM EST THU JAN 02 2025
VALID 12Z THU JAN 02 2025 - 12Z SAT JAN 04 2025
...LONG DURATION LAKE-EFFECT SNOW EVENT CONTINUES DOWNWIND OF THE
GREAT LAKES...
...PERIODS OF LOCALLY HEAVY COASTAL RAINS AND HIGHER ELEVATION
SNOW CONTINUE FOR MUCH OF THE NORTHWESTERN U.S....
...ARCTIC AIR SURGES SOUTH FROM THE NORTHERN PLAINS THROUGH THE
CENTRAL AND EASTERN U.S....
STRONG NORTHWESTERLY WINDS ON THE BACKSIDE OF A DEPARTING LOW
PRESSURE SYSTEM MOVING INTO THE CANADIAN MARITIME WILL GENERATE
MODERATE TO HEAVY LAKE ENHANCED SNOW DOWNWIND OF THE GREAT LAKES
HEADING THE WEEKEND. ANYWHERE BETWEEN 6-12 INCHES OF SNOW WITH
ISOLATED HIGHER AMOUNTS MAY ACCUMULATE DOWNWIND OF THE LAKES BY
SATURDAY MORNING. A LOW PRESSURE SYSTEM TRACKING ACROSS THE
CENTRAL U.S. WILL PRODUCE A LIGHT SWATH OF SNOWFALL FROM IOWA
ACROSS THE OHIO VALLEY TODAY AND INTO THE CENTRAL APPALACHIANS ON
FRIDAY. SNOWFALL ACCUMULATIONS OF 6-12 INCHES ARE POSSIBLE OVER
THE CENTRAL APPALACHIANS.
A SERIES OF LOW PRESSURE SYSTEMS WILL GENERATE RAIN AND HIGH
ELEVATION SNOW ACROSS MUCH OF THE NORTHWEST OVER THE NEXT COUPLE
OF DAYS. THE ASSOCIATED MOISTURE PLUME ASSOCIATED WITH THE FIRST
SYSTEM WILL BE DIRECTED AT THE NORTHERN CALIFORNIA COAST AND
OREGON TODAY, WHERE AN ISOLATED THREAT OF FLASH FLOODING EXISTS.
SNOW SHOWERS CONTINUE OVER THE NORTHERN/CENTRAL ROCKIES. RAIN AND
SNOW SHOWERS EXPAND IN COVERAGE ACROSS THE NORTHWEST ON FRIDAY.
ACCUMULATING SNOW IS POSSIBLE OVER THE HIGHEST ELEVATIONS OF THE
CASCADES, SIERRA AND NORTHERN ROCKIES. HEAVY RAINFALL EXPANDS INTO
THE UPSLOPE AREAS OF THE SIERRA AS THE COLD FRONT PUSHES THROUGH.
HIGH PRESSURE BUILDS OVER THE GREAT PLAINS, SENDING FRIGID ARCTIC
AIR DOWN THROUGH THE REST OF THE WEEK.
KEBEDE
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