142  
FXUS01 KWBC 112000  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
300 PM EST MON FEB 11 2019  
 
VALID 00Z TUE FEB 12 2019 - 00Z THU FEB 14 2019  
   
..MORE WIDESPREAD SNOWFALL MOVING INTO THE NORTHWESTERN U.S
 
 
...A WINTER STORM EXPECTED TO IMPACT MUCH OF THE NORTHERN TO  
NORTHEASTERN U.S...  
 
...HEAVY RAIN EXPECTED FOR THE MID-MISSISSIPPI, TENNESSEE, AND  
OHIO VALLEYS WHERE FLASH FLOODING IS POSSIBLE...  
 
A VERY ACTIVE WEATHER PATTERN IS EXPECTED TO IMPACT MANY AREAS  
ACROSS THE COUNTRY FOR THE NEXT FEW DAYS WITH TWO WINTER STORMS  
BREWING CONCURRENTLY. A LOW PRESSURE SYSTEM THAT DEVELOPED  
YESTERDAY ALONG AN ARCTIC FRONT OFF VANCOUVER ISLAND IS ALREADY  
BRINGING THE NEXT ROUND OF SNOW INTO THE PACIFIC NORTHWEST. WITH  
COLD AIR ALREADY IN PLACE OVER A FRESH SNOW COVER FROM THE  
PREVIOUS SNOWSTORM, CONDITIONS FAVOR ADDITIONAL SNOW TO ACCUMULATE  
EVEN DOWN INTO THE LOWER ELEVATIONS AS THE MOISTURE ASSOCIATED  
WITH THE LOW IS FORECAST TO LINGER THROUGH MUCH OF WEDNESDAY. THE  
HIGHER ELEVATIONS WILL SEE COPIOUS AMOUNTS OF SNOW, LIKELY  
MEASURED IN FEET, ALL ALONG THE CASCADES, AND ONCE AGAIN DOWN  
ALONG THE SIERRA NEVADA! THE INTERMOUNTAIN REGION INTO THE  
NORTHERN ROCKIES WILL LIKELY SEE 2 FEET OF SNOW AT THE HIGHEST  
ELEVATIONS THROUGH WEDNESDAY.  
 
MEANWHILE, A LOW PRESSURE SYSTEM DEVELOPING OVER THE CENTRAL  
PLAINS IS FORECAST TO BRING WIDESPREAD WINTRY WEATHER RAPIDLY  
ACROSS THE NORTHERN AND NORTHEASTERN U.S. DURING THE NEXT COUPLE  
OF DAYS. MORE THAN A FOOT OF SNOW IS FORECAST FOR UPPER MIDWEST  
WITH LESSER AMOUNTS OVER THE NORTHERN PLAINS AND INTO THE GREAT  
LAKES. THE STORM IS FORECAST TO BECOME MORE INTENSE ON TUESDAY AS  
IT HEADS TOWARDS NEW ENGLAND TUESDAY NIGHT. MORE THAN A FOOT OF  
SNOW IS FORECAST FOR NORTHERN NEW YORK AND NORTHERN NEW ENGLAND  
THROUGH WEDNESDAY AS THE STORM CENTER MOVES ACROSS THE REGIONS.  
IN ADDITION, SIGNIFICANT AMOUNTS OF SLEET AND FREEZING RAIN ARE  
ALSO EXPECTED FATHER TO THE SOUTH FROM THE MIDWEST THROUGH THE  
LOWER GREAT LAKES INTO CENTRAL NEW ENGLAND.  
 
FARTHER TO THE SOUTH IN THE WARM SECTOR OF THE STORM SYSTEM, AN  
ENHANCED SOUTHERLY FLOW OF DEEP MOISTURE FROM THE GULF OF MEXICO  
WILL RESULT IN A SWATH OF HEAVY RAIN AND SOME THUNDERSTORMS FROM  
LOUISIANA TO THE OHIO VALLEY THROUGH TUESDAY. FLASH FLOODING WILL  
BE POSSIBLE ACROSS SOME OF THESE AREAS AS ROUNDS OF HEAVY RAIN  
MOVE OVER THE SAME AREAS REPEATEDLY, AND WPC CURRENTLY HAS A  
SLIGHT TO MODERATE RISK OF EXCESSIVE RAINFALL FROM ARKANSAS TO  
SOUTHERN OHIO. SEVERAL INCHES OF RAINFALL WILL BE POSSIBLE FOR  
SOME AREAS BEFORE THE EVENT IS OVER.  
 
KONG  
 
GRAPHICS AVAILABLE AT  
WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  
 

 
 
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