478  
FXUS01 KWBC 240745  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
344 AM EDT WED OCT 24 2018  
 
VALID 12Z WED OCT 24 2018 - 12Z FRI OCT 26 2018  
 
...RAINFALL TO MOVE FROM THE SOUTHERN PLAINS TO THE SOUTHEAST OVER  
THE NEXT FEW DAYS...  
   
..SNOW WILL COME TO AN END FOR NORTHERN NEW ENGLAND
 
 
   
..ACTIVE WEATHER TO OCCUR FOR THE PACIFIC NORTHWEST
 
 
AS AN UPPER LEVEL TROUGH EXITS THE FOUR CORNERS AND MOVES TOWARD  
THE PLAINS, SHOWERS AND THUNDERSTORMS WILL CONTINUE ACROSS THE  
PLAINS ALONG WITH THE LOWER MISSISSIPPI VALLEY TODAY. THE HEAVIEST  
PRECIPITATION IS EXPECTED ALONG NORTH AND CENTRAL TEXAS EASTWARD  
INTO WESTERN LOUISIANA/ARKANSAS. LIGHT TO MODERATE RAIN WILL OCCUR  
IN THE CENTRAL PLAINS, INCLUDING THE HIGH PLAINS IN COLORADO. AT  
THE SURFACE, LOW PRESSURE WILL BEGIN TO LIFT NORTHWARD TOWARD  
COASTAL LOUISIANA. THIS WILL FINALLY SHIFT THE PRECIPITATION AWAY  
FROM TEXAS AND INTO THE LOWER MISSISSIPPI VALLEY AND PORTIONS OF  
THE SOUTHEAST BY THURSDAY MORNING. THIS SURFACE LOW WILL MOVE FROM  
THE SOUTHEAST TOWARD THE TENNESSEE VALLEY. SHOWERS AND  
THUNDERSTORMS WILL INCREASE ACROSS REGIONS FROM NORTHERN FLORIDA  
TO THE CAROLINAS AND THE SOUTHERN PORTIONS OF THE OHIO VALLEY ON  
FRIDAY--WITH PRECIPITATION MOVING FARTHER NORTH INTO THE  
MID-ATLANTIC BY THE START OF THE WEEKEND. IN TERMS OF FLASH  
FLOODING, A MARGINAL RISK HAS BEEN ISSUED FOR SOUTHEAST TEXAS TO  
COASTAL LOUISIANA, SHIFTING TO THE EASTERN GULF COAST BY THURSDAY.  
 
THE SURFACE LOW THAT HAS BEEN BRINGING LIGHT TO MODERATE RAINFALL  
TO COASTAL NEW ENGLAND ALONG WITH SNOW IN THE INTERIOR WILL  
CONTINUE LIFTING NORTHWARD INTO CANADA DURING THE DAY. AS THIS LOW  
PRESSURE MOVES FARTHER AWAY, PRECIPITATION WILL TAPER  
OFF--INCLUDING THE SNOW. HOWEVER, NORTHERN MAINE WILL RECEIVE  
SNOW TODAY--WITH LIGHT AMOUNTS ACROSS SOUTHWEST MAINE INTO  
NORTHERN NEW HAMPSHIRE. PRECIPITATION WILL END COMPLETELY BY EARLY  
THURSDAY MORNING.  
 
MULTIPLE SYSTEMS WILL MOVE ACROSS BRITISH COLUMBIA AND THE PACIFIC  
NORTHWEST THROUGH THE SHORT TERM PERIOD, BRINGING ACTIVE WEATHER  
WITH THEM. THE FIRST FRONTAL SYSTEM WILL APPROACH THESE AREAS  
LATER THIS AFTERNOON. PRECIPITATION WILL INCREASE SIGNIFICANTLY  
TONIGHT AND INTO EARLY THURSDAY MORNING--WITH SNOW IN THE HIGHER  
PEAKS IN WESTERN BRITISH COLUMBIA AND VERY LIGHT AMOUNTS IN THE  
FAR NORTHERN PORTIONS OF THE WASHINGTON CASCADES AND THE NORTHERN  
ROCKIES. PRECIPITATION WILL CONTINUE ACROSS THE PACIFIC NORTHWEST  
IN ADDITION TO THE NORTHERN ROCKIES ON FRIDAY AS ANOTHER FRONTAL  
SYSTEM APPROACHES.  
 
THE TREND FOR TEMPERATURES WILL REMAIN THE SAME AS IT HAS OVER THE  
LAST FEW DAYS WITH BELOW AVERAGE TEMPERATURES IN THE EAST AND  
ABOVE NORMAL FOR THE WEST. TEXAS WILL REMAIN SIGNIFICANTLY BELOW  
AVERAGE TODAY--WITH HIGHS ONLY REACHING TO THE LOW 60S AS  
PRECIPITATION CONTINUES ACROSS THE STATE. BY THURSDAY, HIGH  
TEMPERATURES WILL RECOVER TO NEAR NORMAL.  
 
REINHART  
 
GRAPHICS AVAILABLE AT  
WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  

 
 
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