792
FXUS01 KWBC 011950
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
250 PM EST MON JAN 01 2024
VALID 00Z TUE JAN 02 2024 - 00Z THU JAN 04 2024
...MODERATE TO HEAVY SNOW OVER THE SIERRA NEVADA MOUNTAINS ON
TUESDAY EVENING INTO WEDNESDAY...
..RAIN AND HIGHER ELEVATION SNOW FOR THE PACIFIC NORTHWEST
...LAKE-ENHANCED AND LAKE-EFFECT SNOW DOWNWIND FROM THE GREAT
LAKES...
A WEAK UPPER-LEVEL LOW OVER NORTHWESTERN MEXICO WILL MOVE EASTWARD
TO THE TENNESSEE VALLEY/CENTRAL GULF COAST BY WEDNESDAY EVENING.
THE CIRCULATION AROUND THE UPPER-LEVEL LOW WILL DRAW MOISTURE FROM
THE GULF OF MEXICO STARTING EARLY ON TUESDAY. THE SYSTEM WILL
PRODUCE RAIN WITH EMBEDDED THUNDERSTORMS ON TUESDAY. LOW PRESSURE
WILL DEVELOP ALONG THE WESTERN/CENTRAL GULF COAST ON WEDNESDAY.
THE RAIN AND EMBEDDED THUNDERSTORMS WILL MOVE INTO THE LOWER
MISSISSIPPI VALLEY ON WEDNESDAY AND INTO THE EASTERN GULF
COAST/SOUTHEAST BY WEDNESDAY EVENING.
MEANWHILE, A FRONT OVER THE EASTERN PACIFIC MOVES ONSHORE
OVERNIGHT TUESDAY AND TO THE SOUTHWEST BY WEDNESDAY EVENING. ON
TUESDAY, THE SYSTEM WILL PRODUCE RAIN AND HIGHER-ELEVATION SNOW
OVER PARTS OF THE PACIFIC NORTHWEST AND NORTHERN CALIFORNIA.
OVERNIGHT TUESDAY INTO WEDNESDAY, THE RAIN WILL MOVE INTO SOUTHERN
CALIFORNIA AND MODERATE TO LOCALLY HEAVY SNOW WILL DEVELOP OVER
THE SIERRA NEVADA MOUNTAINS. ON WEDNESDAY, LIGHT SNOW WILL DEVELOP
OVER PARTS OF THE GREAT BASIN.
MOREOVER, A FRONT OVER WESTERN CANADA WILL MOVE INTO THE NORTHERN
TIER STATES ON TUESDAY AFTERNOON, MOVING INTO THE GREAT LAKES/OHIO
VALLEY ON WEDNESDAY. ON TUESDAY, UPPER-LEVEL ENERGY AHEAD OF THE
FRONT WILL PRODUCE LIGHT LAKE-EFFECT SNOW OVER PARTS OF THE UPPER
GREAT LAKES. ON WEDNESDAY, THE LAKE-EFFECT/LAKE-ENHANCED SNOW
EXPANDS INTO THE GREAT LAKES AND THE LOWER GREAT LAKES BY
WEDNESDAY EVENING. LIKEWISE, UPSLOPE SNOW WILL DEVELOP OVER PARTS
OF THE CENTRAL APPALACHIANS ON WEDNESDAY.
ELSEWHERE, UPPER-LEVEL ENERGY MOVING OVER THE
APPALACHIANS/MID-ATLANTIC WILL TRIGGER LIGHT RAIN AND
HIGHER-ELEVATION SNOW ON MONDAY EVENING.
ZIEGENFELDER
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