765  
FXUS01 KWBC 260750  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
350 AM EDT FRI OCT 26 2018  
 
VALID 12Z FRI OCT 26 2018 - 12Z SUN OCT 28 2018  
 
...DEVELOPING COASTAL LOW TO BRING WIDESPREAD PRECIPITATION TO THE  
EASTERN U.S....  
   
..HEAVY RAINFALL POSSIBLE FOR THE PACIFIC NORTHWEST
 
 
A DEVELOPING AREA OF LOW PRESSURE ALONG THE GULF COAST WILL TRACK  
UP THE EAST COAST ON FRIDAY AND SATURDAY. HEAVY RAINFALL WILL  
ACCOMPANY THIS LOW SPREADING FROM THE OHIO VALLEY AND SOUTHEAST,  
NORTHWARD INTO THE MID-ATLANTIC AND EVENTUALLY NEW ENGLAND BY  
SATURDAY. RAIN IS EXPECTED TO BE THE PREDOMINANT PRECIPITATION  
TYPE WITH THIS STORM, BUT MIXED PRECIPITATION ACROSS UPSTATE NEW  
YORK TO NORTHERN NEW ENGLAND WITH ACCUMULATING SNOW AND ICE IS  
POSSIBLE, ESPECIALLY IN THE HIGHER TERRAIN. RAIN MAY ALSO CHANGE  
OVER TO SNOW OR A RAIN/SNOW MIX FARTHER SOUTH INTO PORTIONS OF THE  
CENTRAL APPALACHIANS AS COLD AIR DEEPENS ON THE BACKSIDE OF THE  
STORM. IN ADDITION TO THE HEAVY RAIN, GUSTY WINDS, COASTAL  
FLOODING, AND ISOLATED SEVERE THUNDERSTORMS IN THE COASTAL  
CAROLINAS WILL ALSO BE A CONCERN AS THIS STORM MOVES THROUGH.  
 
THE UPPER MIDWEST AND GREAT LAKES REGION WILL CONTINUE TO SEE  
PERIODS OF RAIN AS A NEARLY STATIONARY FRONTAL BOUNDARY REMAINS  
DRAPED ACROSS THE UPPER LAKES REGION ON FRIDAY, AND A LOW PRESSURE  
SYSTEM MOVES IN FROM THE WEST ON SATURDAY. OUT WEST, A SERIES OF  
FRONTAL SYSTEMS WILL ALLOW FOR PRECIPITATION IN THE PACIFIC  
NORTHWEST, WITH HEAVIER AMOUNTS POSSIBLE PARTICULARLY ALONG THE  
FAVORED HIGHER TERRAIN.  
 
TEMPERATURE WISE, THE QUICK MOVING LOW PRESSURE SYSTEM IN THE EAST  
WILL KEEP TEMPERATURES COOL FOR THIS TIME OF THE YEAR, WITH  
AFTERNOON HIGHS AS MUCH AS 10 TO 20 DEGREES BELOW NORMAL POSSIBLE.  
MUCH OF THE WESTERN U.S. WILL REMAIN WARM AND DRY, WHICH WILL  
CONTINUE TO ELEVATE FIRE WEATHER CONCERNS ACROSS SOUTHERN  
CALIFORNIA.  
 
SANTORELLI  
 
GRAPHICS AVAILABLE AT  
WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  

 
 
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