083  
FXUS01 KWBC 110757  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
256 AM EST FRI JAN 11 2019  
 
VALID 12Z FRI JAN 11 2019 - 12Z SUN JAN 13 2019  
 
...WINTER STORM EXPECTED FROM THE CENTRAL PLAINS TO THE  
MID-ATLANTIC REGION THROUGH EARLY SUNDAY...  
 
MOISTURE WILL BEGIN TO SURGE NORTHWARD ACROSS THE SOUTHERN PLAINS  
BY EARLY FRIDAY AS A FRONT DEVELOPS IN ASSOCIATION WITH A SURFACE  
LOW OVER NORTHERN TEXAS. AS THIS FRONTAL SYSTEM PROGRESSES  
EASTWARD, SHOWERS AND SOME THUNDERSTORMS AHEAD OF THE FRONT WILL  
MOVE ACROSS CENTRAL TEXAS FRIDAY AFTERNOON AND EVENING. BY  
SATURDAY EVENING, SHOWERS AND THUNDERSTORMS SHOULD BECOME MORE  
NUMEROUS ACROSS THE DEEP SOUTH AS A WARM FRONT LIFTS NORTHWARD  
FROM THE GULF OF MEXICO.  
 
THE MORE SIGNIFICANT FACET TO THIS STORM SYSTEM WILL BE THE WINTER  
WEATHER IMPACTS. ON FRIDAY, HEAVY SNOW IS EXPECTED TO OCCUR ALONG  
THE COLORADO ROCKIES AND NORTHERN NEW MEXICO. FROM FRIDAY NIGHT  
INTO SATURDAY, WIDESPREAD SNOW IS FORECAST TO EFFECT AREAS FROM  
THE CENTRAL PLAINS TO THE WESTERN PORTIONS OF THE OHIO VALLEY. THE  
HEAVIEST SNOWFALL ACCUMULATIONS WITH THIS EVENT ARE CURRENTLY  
ANTICIPATED ACROSS NORTHERN MISSOURI AND CENTRAL ILLINOIS, WITH  
AMOUNTS IN EXCESS OF 8 INCHES POSSIBLE. THERE SHOULD ALSO BE A  
ZONE OF SLEET AND FREEZING RAIN ACROSS THE OZARKS AND EXTENDING  
ACROSS KENTUCKY AND TOWARDS THE SOUTHERN APPALACHIANS. BY  
SATURDAY EVENING AND INTO EARLY SUNDAY, THE WINTRY PRECIPITATION  
WILL BEGIN TO MOVE ACROSS THE OHIO VALLEY AND THEN THE  
MID-ATLANTIC REGION WITH SNOW DEVELOPING ACROSS MUCH OF VIRGINIA  
AND WEST VIRGINIA, AND LIGHTER SNOW NORTH OF MARYLAND. THE WINTER  
WEATHER DISCUSSION FROM WPC HAS ADDITIONAL DETAILS ON THIS SYSTEM.  
 
THE PACIFIC NORTHWEST AND INTERMOUNTAIN WEST WILL HAVE  
PRECIPITATION TAPER OFF BY FRIDAY, WITH MOST OF THE ACTIVITY  
OCCURRING IN BRITISH COLUMBIA. A FRONT WILL APPROACH CALIFORNIA  
ON FRIDAY EVENING, INCREASING RAIN CHANCES AND HIGHER ELEVATION  
SNOW. PRECIPITATION IS EXPECTED TO CONTINUE FOR SOUTHERN  
CALIFORNIA ON SATURDAY.  
 
D. HAMRICK  
 
GRAPHICS AVAILABLE AT  
WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  

 
 
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