667  
FXUS01 KWBC 011943  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
342 PM EDT WED NOV 01 2017  
 
VALID 00Z THU NOV 02 2017 - 00Z SAT NOV 04 2017  
 
...HEAVY RAINFALL ALONG THE CENTRAL GULF COAST WILL COME TO AN END  
TONIGHT...  
 
...LOCALLY HEAVY PRECIPITATION LIKELY ACROSS THE MIDWEST AND LOWER  
GREAT LAKES WITH SOME LIGHT ACCUMULATING SNOWS CONTINUING ACROSS  
THE UPPER MISSISSIPPI VALLEY TONIGHT...  
 
...HEAVY MOUNTAIN SNOWFALL LIKELY ACROSS PARTS OF THE PACIFIC  
NORTHWEST AND THE NORTHERN ROCKIES...  
 
EXPECT HEAVY RAINFALL TO CONTINUE THIS EVENING, COMING TO AN END  
OVERNIGHT, ACROSS PORTIONS OF THE CENTRAL GULF COAST ALONG A  
WEAKENING FRONTAL BOUNDARY. ISOLATED FLASH FLOODING AND SEVERE  
WEATHER WILL BE POSSIBLE. LINGERING SHOWERS AND THUNDERSTORMS  
REMAIN IN THE FORECAST THE NEXT FEW DAYS FROM THE CENTRAL GULF  
COAST THROUGH THE TENNESSEE VALLEY AS MOISTURE RETURNS NORTHWARD  
AROUND A SURFACE HIGH PRESSURE SYSTEM STATIONED OVER THE EASTERN  
U.S.. TEMPERATURES FROM THE SOUTHERN PLAINS TO THE EASTERN U.S. ON  
THURSDAY AND FRIDAY WILL ALSO BE 10 TO 20 DEGREES ABOVE NORMAL  
AHEAD OF A FRONT APPROACHING FROM THE NORTH.  
 
SNOW SHOWERS ON THE NORTH AND WEST SIDE OF A LOW PRESSURE SYSTEM  
MOVING QUICKLY THROUGH THE UPPER MISSISSIPPI VALLEY SHOULD COME TO  
AN END BY TOMORROW. LIGHT ACCUMULATIONS ARE STILL POSSIBLE,  
ESPECIALLY ALONG THE NORTH SHORE OF LAKE SUPERIOR WHERE FAVORABLE  
WINDS OVER THE RELATIVELY WARM WATER WILL ENHANCE SNOWFALL. WINTER  
WEATHER ADVISORIES AND WINTER STORM WARNINGS REMAIN IN EFFECT THIS  
EVENING ACROSS PARTS OF NORTHERN MINNESOTA AND WISCONSIN. TO THE  
SOUTH, WIDESPREAD RAINFALL IS LIKELY ALONG THE ASSOCIATED FRONTAL  
BOUNDARY AS IT MOVES EASTWARD THROUGH THE MIDWESTERN STATES AND  
INTO THE LOWER GREAT LAKES AND NEW ENGLAND BY FRIDAY. LOCALLY  
HEAVY RAINFALL IS POSSIBLE. TO THE NORTH OF THIS FRONTAL SYSTEM,  
EXPECT TEMPERATURES TO BE CHILLY WITH AFTERNOON HIGHS 5 TO 10  
DEGREES, MAYBE AS MUCH AS 20 DEGREES, BELOW AVERAGE ACROSS THE  
NORTHERN AND CENTRAL PLAINS AND BACK INTO THE NORTHERN ROCKIES.  
 
OUT WEST, THE WESTERN EDGE OF THIS FRONT SHOULD REMAIN STATIONARY  
ACROSS THE NORTHERN ROCKIES THE NEXT FEW DAYS WHICH WILL KEEP  
HEAVY MOUNTAIN SNOWS IN THE FORECAST WITH ACCUMULATIONS NEAR OR  
EXCEEDING A FOOT IN THE HIGHEST TERRAIN. A STRONG UPPER LEVEL  
SYSTEM DROPPING SOUTHWARD ALONG THE WESTERN CANADIAN COAST AND  
INTO THE PACIFIC NORTHWEST WILL FURTHER ENHANCE THIS SNOWFALL AS  
WELL AS ALLOW FOR WIDESPREAD RAIN AND MOUNTAIN SNOWS TO SPREAD  
INTO THE PACIFIC NORTHWEST AND THE NORTHERN INTERMOUNTAIN WEST.  
 
SANTORELLI  
 
GRAPHICS AVAILABLE AT  
WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  

 
 
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