382  
FXUS01 KWBC 010808  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
407 AM EDT MON APR 01 2019  
 
VALID 12Z MON APR 01 2019 - 12Z WED APR 03 2019  
 
...RAIN AND MOUNTAIN SNOW WILL SPREAD ACROSS THE NORTHWEST AND  
INTO THE NORTHERN/CENTRAL ROCKIES...  
 
...RAIN POSSIBLE FOR THE SOUTHEAST MONDAY AND FOR THE ATLANTIC  
COAST ON TUESDAY AS A COASTAL LOW DEVELOPS...  
 
...TEMPERATURES WILL REMAIN COLDER THAN AVERAGE FOR THE SOUTHERN  
PLAINS TO THE NORTHEAST ON MONDAY...  
 
ON MONDAY, A LOW PRESSURE SYSTEM WILL SLOWLY APPROACH THE PACIFIC  
NORTHWEST, INCREASING MOISTURE AND THE CHANCE FOR PRECIPITATION IN  
THE NORTHWEST AND INTO NORTHERN CALIFORNIA. BY TUESDAY, THE LOW  
TRAVERSING THE INTERMOUNTAIN WEST IS EXPECTED TO LEAD TO SNOW INTO  
THE NORTHERN AND CENTRAL ROCKIES, AND SNOW AND RAIN SHOULD MOVE  
INTO THE PLAINS BY WEDNESDAY MORNING. THE HIGHEST SNOWFALL TOTALS  
ARE EXPECTED IN HIGHER ELEVATIONS--HEAVY SNOWS OF 8 TO 12 INCHES  
ARE POSSIBLE IN THE SIERRA NEVADA, WHILE 4 TO 8 INCHES OF SNOW IS  
FORECAST FOR THE WIND RIVER MOUNTAINS/TETONS.  
 
AHEAD OF THIS LOW SYSTEM, LIGHT RAIN AND SNOW SHOWERS ARE POSSIBLE  
ON MONDAY ACROSS THE NORTHERN ROCKIES TO NORTHERN PLAINS  
ASSOCIATED WITH A FRONTAL BOUNDARY. PRECIPITATION WILL SPREAD INTO  
THE UPPER/MIDDLE MISSISSIPPI VALLEY AND INTO THE UPPER GREAT LAKES  
REGION BY MONDAY NIGHT AND TUESDAY AS A WEAK LOW APPROACHES. A  
SWATH OF 1 TO 3 INCHES OF SNOW IS POSSIBLE ACROSS THESE AREAS WITH  
THIS SYSTEM.  
 
A QUASI-STATIONARY FRONT WILL LINGER ACROSS FLORIDA ON MONDAY AND  
MONDAY NIGHT, SO SHOWERS AND THUNDERSTORMS ARE LIKELY THERE. AS AN  
UPPER-LEVEL TROUGH APPROACHES ON MONDAY NIGHT AND INTO TUESDAY, A  
SURFACE LOW IS EXPECTED TO STRENGTHEN AND MOVE NORTHEASTWARD EAST  
OF THE ATLANTIC COAST. WHILE THE HEAVIEST RAIN SHOULD REMAIN  
OFFSHORE, RAIN COULD SPREAD TO GEORGIA AND THE CAROLINAS ON MONDAY  
NIGHT, INTO THE MID-ATLANTIC ON TUESDAY, AND INTO THE NORTHEAST BY  
WEDNESDAY MORNING. LIGHT SNOW COULD MIX IN WHERE THE PRECIPITATION  
REACHES HIGHER ELEVATIONS OF THE SOUTHERN APPALACHIANS, AS WELL AS  
IN THE NORTHEAST. ISOLATED STRONG STORMS ARE POSSIBLE IN FLORIDA  
EARLY TUESDAY, AND LOCALIZED FLOODING IS A POSSIBILITY ALONG THE  
COAST OF THE CAROLINAS.  
 
TEMPERATURES ARE EXPECTED TO REMAIN COOLER THAN AVERAGE ON MONDAY  
ACROSS THE SOUTHERN PLAINS EAST AND NORTHWARD INTO THE NORTHEAST.  
A FEW RECORD LOW MINIMUM AND MAXIMUM TEMPERATURES ARE POSSIBLE  
ACROSS TEXAS AND THE LOWER MISSISSIPPI VALLEY, AND FREEZE WARNINGS  
ARE IN EFFECT FOR PARTS OF THE LOWER MISSISSIPPI, TENNESSEE, AND  
LOWER OHIO VALLEYS, AND INTO NORTH CAROLINA. TEMPERATURES SHOULD  
MODERATE SOME ON TUESDAY, THOUGH THE CAROLINAS WILL REMAIN 15 TO  
20 DEGREES BELOW AVERAGE. WARMER THAN AVERAGE SPOTS FOR THE  
BEGINNING OF THE WORKWEEK WILL BE THE PACIFIC NORTHWEST AND THE  
SOUTHWEST.  
 
TATE  
 
GRAPHICS AVAILABLE AT  
WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  

 
 
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