938  
FXUS01 KWBC 021934  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
233 PM EST TUE JAN 02 2024  
 
VALID 00Z WED JAN 03 2024 - 00Z FRI JAN 05 2024  
 
...MODERATE TO LOCALLY HEAVY SNOW OVER THE SIERRA NEVADA  
MOUNTAINS...  
 
...HIGHER ELEVATION SNOW FOR THE PACIFIC NORTHWEST AND THE GREAT  
BASIN/CENTRAL/SOUTHERN ROCKIES...  
 
...LAKE-ENHANCED AND LAKE-EFFECT SNOW DOWNWIND FROM THE GREAT  
LAKES...  
 
A WEAK UPPER-LEVEL LOW OVER WESTERN TEXAS AND NORTH-CENTRAL MEXICO  
WILL MOVE EASTWARD TO THE MID-ATLANTIC COAST BY THURSDAY EVENING.  
THE CIRCULATION AROUND THE UPPER-LEVEL LOW WILL DRAW MOISTURE FROM  
THE GULF OF MEXICO, PRODUCING RAIN WITH EMBEDDED THUNDERSTORMS ON  
TUESDAY EVENING INTO WEDNESDAY MORNING. LOW PRESSURE WILL DEVELOP  
ALONG THE WESTERN/CENTRAL GULF COAST OVERNIGHT TUESDAY INTO  
WEDNESDAY MORNING. THE RAIN AND EMBEDDED THUNDERSTORMS WILL MOVE  
INTO THE LOWER MISSISSIPPI VALLEY ON WEDNESDAY AND INTO THE  
EASTERN GULF COAST/SOUTHEAST BY WEDNESDAY EVENING. RAIN WILL BE  
ALONG PARTS OF THE MID-ATLANTIC/SOUTHEAST COAST BY THURSDAY.  
 
MEANWHILE, A FRONT MOVES ONSHORE OVER THE PACIFIC NORTHWEST  
OVERNIGHT TUESDAY AND MOVES TO THE SOUTHWEST BY WEDNESDAY EVENING  
BEFORE MOVING TO THE SOUTHERN HIGH PLAINS ON THURSDAY. LATE  
AFTERNOON 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, ENDING  
OVERNIGHT WEDNESDAY. ON WEDNESDAY, THE SNOW WILL DEVELOP OVER  
PARTS OF THE GREAT BASIN. RAIN AND HIGHER ELEVATION SNOW MOVES  
INTO THE SOUTHWEST BY WEDNESDAY EVENING AND THE CENTRAL/SOUTHERN  
ROCKIES ON THURSDAY. RAIN AND SNOW WILL MOVE INTO PARTS OF THE  
SOUTHERN HIGH PLAINS BY THURSDAY EVENING.  
 
MOREOVER, A FRONT EXTENDING FROM THE UPPER GREAT LAKES INTO THE  
NORTHERN PLAINS/NORTHERN HIGH PLAINS WILL MOVE INTO THE LOWER  
GREAT LAKES/OHIO VALLEY BY WEDNESDAY EVENING AND THEN INTO THE  
NORTHEAST COAST ON THURSDAY. ON WEDNESDAY, THE  
LAKE-EFFECT/LAKE-ENHANCED SNOW DEVELOPS OVER THE UPPER GREAT LAKES  
AND THE LOWER GREAT LAKES BY WEDNESDAY EVENING. LIKEWISE, UPSLOPE  
SNOW WILL DEVELOP OVER PARTS OF THE CENTRAL APPALACHIANS ON  
WEDNESDAY EVENING INTO THURSDAY AS SNOW MOVES INTO NORTHERN NEW  
ENGLAND.  
 
FURTHERMORE, ANOTHER FRONT WILL MOVE ONSHORE OVER THE PACIFIC  
NORTHWEST ON THURSDAY. RAIN AND HIGHER-ELEVATION SNOW WILL  
CONTINUE OVER THE REGION ON THURSDAY.  
 
ZIEGENFELDER  
 
GRAPHICS AVAILABLE AT  
HTTPS://WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  
 
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