336  
FXUS01 KWBC 060801  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
300 AM EST SUN JAN 06 2019  
 
VALID 12Z SUN JAN 06 2019 - 12Z TUE JAN 08 2019  
 
...A SERIES OF SYSTEMS WILL DELIVER WIDESPREAD RAIN AND MOUNTAIN  
SNOWS TO MUCH OF THE WESTERN U.S. THE NEXT COUPLE OF DAYS....  
 
...ACCUMULATING SNOW AND LIGHT FREEZING RAIN POSSIBLE FROM THE  
NORTHERN PLAINS TO THE GREAT LAKES...  
 
...MUCH ABOVE NORMAL TEMPERATURES LIKELY ACROSS THE CENTRAL  
STATES...  
 
A SERIES OF STORMS TAKE AIM AT THE WEST COAST DURING THE SHORT  
RANGE PERIOD PROMISING A RATHER ACTIVE PATTERN FOR MUCH OF THE  
WESTERN STATES. THE INITIAL WAVE WILL MOVE THROUGH THE INTERIOR  
WEST TODAY BRINGING WIDESPREAD LOWER ELEVATION RAIN AND MOUNTAIN  
SNOWS TO PARTS OF THE SOUTHWEST, GREAT BASIN, AND ROCKIES.  
MEANWHILE, A SECOND WAVE ARRIVES INTO THE CALIFORNIA COAST THIS  
EVENING WITH LOCALLY HEAVY RAINFALL AND ISOLATED FLASH FLOODING  
POSSIBLE ALONG FAVORED UPSLOPE REGIONS OF NORTHERN CALIFORNIA.  
SIGNIFICANT ACCUMULATING SNOWFALL IS ALSO LIKELY IN THE WASHINGTON  
AND OREGON CASCADES AND MORESO THE SIERRA NEVADA RANGE. A THIRD  
SYSTEM MOVES TOWARDS THE WEST COAST AT THE END OF THE PERIOD,  
DELIVERING YET ANOTHER ROUND OF RAIN AND MOUNTAIN SNOWS TO  
NORTHERN CALIFORNIA AND INTO THE PACIFIC NORTHWEST BY LATE  
MONDAY/EARLY TUESDAY.  
 
LOW PRESSURE EJECTS INTO THE PLAINS ON MONDAY WITH PRECIPITATION  
BEGINNING TO DEVELOP OVERNIGHT ON SUNDAY INTO MONDAY AHEAD OF THE  
SYSTEM ACROSS THE MIDDLE AND UPPER MISSISSIPPI VALLEY.  
TEMPERATURES SHOULD BE COLD ENOUGH TO SUPPORT WINTRY PRECIPITATION  
FROM NORTH DAKOTA EASTWARD INTO NORTHERN MINNESOTA, WISCONSIN, AND  
THE UPPER PENINSULA OF MICHIGAN WITH SNOW AND ICE ACCUMULATIONS  
POSSIBLE. LIGHT SNOW AND FREEZING RAIN SHOULD MOVE INTO THE GREAT  
LAKES AND PARTS OF THE NORTHEAST BY LATE MONDAY AS THE WHOLE  
SYSTEM PUSHES EAST.  
 
TEMPERATURES ACROSS THE COUNTRY FOR THE SHORT RANGE PERIOD  
FEATURES WELL ABOVE NORMAL TEMPERATURES PERSISTING EAST OF THE  
CONTINENTAL DIVIDE WITH +20 TO +30 ANOMALIES LIKELY ACROSS THE  
CENTRAL PLAINS AND MIDWEST. AFTER AN INITIAL WARMER DAY ON SUNDAY,  
TEMPERATURES BRIEFLY REBOUND TO NEAR OR JUST BELOW NORMAL ON  
MONDAY FROM THE MID-ATLANTIC INTO THE NORTHEAST AS UPPER LEVEL  
ENERGY SLIDES THROUGH ALOFT. OUT IN THE WEST, PERSISTENT  
PRECIPITATION AND UPPER LEVEL TROUGHING WILL KEEP TEMPERATURES  
NEAR OR BELOW NORMAL THROUGH THE BEGINNING OF THIS WEEK.  
 
SANTORELLI  
 
GRAPHICS AVAILABLE AT  
WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  

 
 
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