420  
FXUS01 KWBC 260806  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
305 AM EST MON FEB 26 2018  
 
VALID 12Z MON FEB 26 2018 - 12Z WED FEB 28 2018  
 
...HEAVY SNOW POSSIBLE FOR THE CASCADES, NORTHERN ROCKIES,  
SIERRAS, AND THE SAN GABRIEL MOUNTAINS...  
   
..SNOW POSSIBLE OVER PARTS OF THE MOGOLLON RIM
 
 
   
..HEAVY RAIN POSSIBLE OVER PARTS OF THE TENNESSEE VALLEY
 
 
A FRONT EXTENDING ACROSS THE SOUTHEAST INTO CENTRAL GULF COAST  
WILL MOVE SOUTHWARD INTO THE GULF OF MEXICO BY MONDAY EVENING AND  
LINGER ACROSS PARTS OF FLORIDA INTO TUESDAY EVENING. THE SYSTEM  
WILL PRODUCE SHOWERS AND THUNDERSTORMS ALONG PARTS OF THE  
CENTRAL/EASTERN GULF COAST THROUGH MONDAY AFTERNOON. RAIN WILL  
ALSO DEVELOP OVER PARTS OF THE TENNESSEE VALLEY/SOUTHEAST ON  
MONDAY THAT WILL MOVE EASTWARD TO THE SOUTHEASTERN COAST BY MONDAY  
EVENING AND OFF THE COAST OVERNIGHT MONDAY.  
 
ANOTHER FRONT EXTENDING FROM THE NORTHERN HIGH PLAINS TO PARTS OF  
THE GREAT BASIN/NORTHERN CALIFORNIA WILL MOVE EASTWARD TO THE  
UPPER GREAT LAKES/CENTRAL PLAINS INTO THE SOUTHWEST BY TUESDAY  
EVENING. THE SYSTEM WILL PRODUCE SNOW OVER PARTS OF THE PACIFIC  
NORTHWEST INTO THE NORTHERN ROCKIES AND PARTS OF NORTHERN  
CALIFORNIA/GREAT BASIN ON MONDAY. COASTAL RAIN WILL DEVELOP OVER  
PARTS OF NORTHERN/CENTRAL CALIFORNIA ALSO ON MONDAY. AS THE STORM  
MOVES INLAND, THE SNOW LEVELS WILL LOWER OVER THE WESTERN THIRD OF  
THE COUNTRY. THE SNOW WILL END OVER PARTS OF THE PACIFIC  
NORTHWEST BRIEFLY OVERNIGHT MONDAY BEGINNING OVER PARTS OF  
WASHINGTON STATE BY TUESDAY AFTERNOON INTO EVENING. THE SNOW WILL  
CONTINUE OVER PARTS OF THE NORTHERN ROCKIES INTO PARTS OF THE  
GREAT BASIN THROUGH TUESDAY EVENING. LATE MONDAY AFTERNOON, SNOW  
MOVES INTO THE SIERRAS THROUGH TUESDAY EVENING. THE SNOW ALSO  
MOVES INTO SOME OF THE COASTAL MOUNTAINS OF SOUTHERN CALIFORNIA ON  
TUESDAY INTO TUESDAY EVENING AND INTO THE MOGOLLON RIM BY TUESDAY  
EVENING. ADDITIONALLY, COASTAL RAIN MOVES INTO THE  
CENTRAL/SOUTHERN CALIFORNIA COAST MONDAY AFTERNOON INTO TUESDAY  
EVENING.  
 
ON MONDAY EVENING, MOISTURE FROM THE WESTERN GULF OF MEXICO BEGINS  
TO MOVE NORTHWARD OVER THE SOUTHERN PLAINS EXTENDING NORTHEASTWARD  
INTO THE MIDDLE MISSISSIPPI VALLEY. WITH THE AID OF UPPER-LEVEL  
JET DYNAMICS, SHOWERS AND THUNDERSTORMS WILL DEVELOP OVER PARTS OF  
THE SOUTHERN PLAINS BY TUESDAY MORNING EXPANDING NORTHWARD INTO  
PARTS OF THE CENTRAL PLAINS AND EASTWARD INTO PARTS OF THE LOWER  
MISSISSIPPI VALLEY BY TUESDAY EVENING.  
 
ZIEGENFELDER  
 
GRAPHICS AVAILABLE AT  
WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  

 
 
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