696  
FXUS01 KWBC 051958  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
357 PM EDT WED SEP 05 2018  
 
VALID 00Z THU SEP 06 2018 - 00Z SAT SEP 08 2018  
 
...TROPICAL STORM GORDON HAS MADE LANDFALL AND WILL CONTINUE TO  
TRACK INLAND BRINGING HEAVY RAIN AND THE THREAT OF FLASH FLOODING  
TO THE LOWER MISSISSIPPI VALLEY AND PARTS OF THE COASTAL DEEP  
SOUTH...  
 
...EXCESSIVE RAINFALL AND FLASH FLOODING IS LIKELY ACROSS PORTIONS  
OF THE SOUTHERN AND CENTRAL PLAINS AND THE MIDDLE MISSISSIPPI  
VALLEY...  
 
...EXCESSIVE HEAT CONTINUES TO BE FELT ACROSS THE NORTHEASTERN  
U.S....  
 
TROPICAL STORM GORDON MADE LANDFALL LATE TUESDAY EVENING NEAR THE  
ALABAMA AND MISSISSIPPI BORDER AND HAS WEAKENED TO A TROPICAL  
DEPRESSION AS IT CONTINUES TO SPIN ACROSS THE LOWER MISSISSIPPI  
VALLEY. THE FORECAST HAS THIS TROPICAL DEPRESSION HOOKING  
NORTH-NORTHEAST THROUGH ARKANSAS AND ACROSS MISSOURI AND ILLINOIS  
BY THE END OF THE WEEKEND. A SWATH OF 2 TO 5 INCHES, WITH  
LOCALIZED HIGHER AMOUNTS, IS FORECAST FROM MISSISSIPPI TO ILLINOIS  
IN A BOOMERANG PATTERN. THIS WILL CREATE A VAST AREA OF ELEVATED  
FLOODING CONCERNS OVER THE NEXT FEW DAYS. WPC HAS PORTIONS OF THE  
LOWER MISSISSIPPI VALLEY AND MIDWEST IN A MODERATE RISK FOR  
EXCESSIVE RAINFALL OVER THE NEXT FEW DAYS. A LARGE SWATH OF FLASH  
FLOOD WATCHES ARE ALSO IN EFFECT FROM THE PANHANDLE OF FLORIDA  
NORTHWEST ACROSS MISSISSIPPI AND ARKANSAS. CHECK THE LATEST PUBLIC  
ADVISORIES FOR FURTHER INFORMATION ON THE PATH AND IMPACTS FROM  
THIS STORM.  
 
MEANWHILE, A FRONTAL BOUNDARY IS CURRENTLY STRETCHING ACROSS THE  
UPPER GREAT LAKES SOUTHWESTWARD INTO THE SOUTHERN PLAINS. MULTIPLE  
ROUNDS OF RAIN AND THUNDERSTORMS WILL PERSIST ALONG THIS BOUNDARY  
AS IT CONTINUES ON IT'S PROGRESSIVE SOUTHEAST PATH OVER THE NEXT  
24 HOURS. NUMEROUS AREAS WITHIN THIS REGION ARE ALREADY  
EXPERIENCING SATURATED SOILS AND ONGOING FLOODING, SO ANY FURTHER  
RAINFALL WILL ONLY EXACERBATE THE SITUATION. THE WEATHER  
PREDICTION CENTER HAS ISSUED A SLIGHT RISK OF EXCESSIVE RAINFALL  
ALONG THE FRONTAL BOUNDARY STRETCHING FROM THE MIDDLE MISSISSIPPI  
VALLEY INTO THE SOUTHERN PLAINS THROUGH TONIGHT. A MODERATE RISK  
OF EXCESSIVE RAINFALL EXISTS ELSEWHERE ALONG THE FRONTAL PASSAGE.  
LARGE SECTIONS OF THE SOUTHERN AND CENTRAL PLAINS, THE MIDDLE AND  
UPPER MISSISSIPPI VALLEY, AND THE UPPER GREAT LAKES ARE CURRENTLY  
UNDER FLASH FLOOD WATCHES OR ARE EXPERIENCING ONGOING FLOODING.  
 
AHEAD OF THIS APPROACHING COLD FRONT, A DEEP PULL OF WARM AND  
MOIST AIR IS RESULTING IN HOT AND HUMID CONDITIONS ACROSS MUCH OF  
THE EASTERN U.S.. HEAT ADVISORIES REMAIN IN EFFECT FOR PARTS OF  
THE NORTHEAST AND COASTAL MID-ATLANTIC THIS EVENING. ONCE THE COLD  
FRONT PASSES ACROSS THIS REGION BY THE END OF THE WEEK, A MUCH  
COOLER AND DRIER AIRMASS WILL TAKE HOLD.  
 
WIX  
 
GRAPHICS AVAILABLE AT  
WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  

 
 
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