144  
FXUS01 KWBC 240752  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
252 AM EST WED JAN 24 2018  
 
VALID 12Z WED JAN 24 2018 - 12Z FRI JAN 26 2018  
 
...LINGERING FLOODING CONCERNS FOR PORTIONS OF NEW YORK INTO NEW  
ENGLAND THROUGH WEDNESDAY MORNING...  
 
...HEAVY RAIN AND SNOW FROM NORTHERN CALIFORNIA INTO THE  
NORTHWEST...  
 
RAIN AND SNOW WILL LINGER ACROSS PORTIONS OF THE MID-ATLANTIC AND  
NORTHEAST THIS MORNING AS A WINTER STORM SYSTEM LIFTS INTO THE  
CANADIAN MARITIMES AND COLD AIR FILTERS IN THE WAKE. FLOODING WILL  
REMAIN A CONCERN FROM NEW YORK INTO NEW ENGLAND GIVEN THE  
POTENTIAL FOR ICE JAM FLOODING COUPLED WITH RECENT RAINFALL.  
 
HIGH PRESSURE WILL MIGRATE FROM THE INTERMOUNTAIN REGION ACROSS  
THE CENTRAL CONUS TO THE EASTERN SEABOARD OVER THE NEXT FEW DAYS.  
MUCH OF THE SOUTH WILL BE FAIRLY DRY THROUGH THE END OF WEEK,  
EXCEPT FOR SOUTH TEXAS, WHERE SHOWERS AND THUNDERSTORMS WILL  
PERSIST. TEMPERATURES WILL ALSO SEE A WARMING TREND FROM THE  
CENTRAL TO NORTHERN PLAINS, SPREADING EASTWARD INTO THE MIDWEST  
WHERE HIGH TEMPERATURES WILL RANGE FROM 10 TO 20 DEGREES ABOVE  
AVERAGE FOR THURSDAY  
 
A SLOW MOVING PACIFIC COLD FRONT WILL WORK EASTWARD OVER THE NEXT  
TWO DAYS BRINGING A ROUND OF HEAVY RAIN TO PORTIONS OF THE  
NORTHERN CALIFORNIA AND SOUTHWESTERN OREGON COASTS. SNOW LEVELS  
WILL STEADILY FALL THIS AFTERNOON AS COLD AIR SURGES IN - COVERAGE  
OF SNOW WILL INCREASE FROM THE KLAMATH AND CASCADES OF NORTHERN  
CALIFORNIA INTO THE WASHINGTON/OREGON CASCADES, EASTWARD INTO THE  
NORTHERN ROCKIES. ONE TO TWO FEET OF SNOW APPEARS LIKELY IN THE  
MOUNTAINS THROUGH THE DAY ON THURSDAY. THE INTENSITY OF  
PRECIPITATION WILL WANE WEDNESDAY NIGHT INTO THURSDAY AS ACCESS TO  
BETTER MOISTURE IS LOST, WITH A MORE SHOWERY REGIME DEVELOPING  
TOWARD THE END OF THE WEEK FOR THE WEST.  
 
CAMPBELL/OTTO  
 
GRAPHICS AVAILABLE AT  
WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  

 
 
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