552  
FXUS01 KWBC 062007  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
407 PM EDT THU SEP 06 2018  
 
VALID 00Z FRI SEP 07 2018 - 00Z SUN SEP 09 2018  
 
...TROPICAL DEPRESSION GORDON CONTINUES TO BRING HEAVY RAIN AND  
FLASH FLOODING CONCERNS TO PORTIONS OF THE SOUTHERN PLAINS AND THE  
LOWER AND MIDDLE MISSISSIPPI VALLEY...  
 
...EXCESSIVE HEAT CONTINUES TO BE FELT ACROSS THE NORTHEASTERN  
U.S...  
 
A FRONTAL BOUNDARY IS FORECAST TO BECOME STALLED OVER PORTIONS OF  
THE CENTRAL/SOUTHERN PLAINS AND MIDDLE MISSISSIPPI VALLEY IN THE  
COMING DAYS. THIS BOUNDARY, COUPLED WITH THE DEEP MOISTURE INFLUX  
FROM TROPICAL DEPRESSION GORDON, WILL BE A FOCUS FOR SLOW MOVING  
STORMS CAPABLE OF PRODUCING HIGH AMOUNTS OF RAINFALL. ADDITIONAL  
RAINFALL ON TOP OF ALREADY SATURATED SOILS WITH KEEP AN ELEVATED  
THREAT FOR FLOODING THROUGH THE END OF THE WEEK FOR PARTS OF THE  
CENTRAL U.S.. THE WEATHER PREDICTION CENTER HAS MUCH OF ARKANSAS  
AS WELL AS PORTIONS OF THE MIDDLE MISSISSIPPI VALLEY IN A SLIGHT  
AND MODERATE RISK FOR EXCESSIVE RAINFALL THROUGH TONIGHT. THE  
MODERATE RISK OF EXCESSIVE RAINFALL IS FORECAST TO ENCOMPASS MUCH  
OF ARKANSAS, MISSOURI, AND ILLINOIS ON FRIDAY. AS THE TROPICAL  
SYSTEM CONTINUES TO SHIFT NORTHEAST, THE MODERATE RISK AREA WILL  
THEN TRANSITION TO PORTIONS OF INDIANA, ILLINOIS, AND WESTERN  
MISSOURI, WHILE THE SLIGHT RISK AREA WILL STRETCH FROM TEXAS  
THROUGH THE LOWER AND MID MISSISSIPPI VALLEY AND INTO THE OHIO  
VALLEY.  
 
MEANWHILE, THIS SAME FRONTAL BOUNDARY WILL REMAIN PROGRESSIVE  
ACROSS THE NORTHEASTERN PORTION OF THE U.S. AHEAD OF THE FRONT,  
STRONG SOUTHERLY WINDS ARE IN PLACE, RESULTING IN HOT AND HUMID  
TEMPERATURES ACROSS THE REGION. HEAT ADVISORIES ARE CURRENTLY IN  
PLACE ACROSS COASTAL PORTIONS OF THE NORTHERN MIDDLE ATLANTIC AND  
NORTHEAST. EXCESSIVELY HOT TEMPERATURES ARE ALSO FORECAST ACROSS  
PORTIONS OF THE SOUTHWEST, INCLUDING SOUTHERN CALIFORNIA AND  
SOUTHWEST ARIZONA, AS A STRONG RIDGE BUILDS IN ACROSS THE REGION.  
EXCESSIVE HEAT WATCHES ARE IN EFFECT HERE.  
 
ELSEWHERE ACROSS THE COUNTRY, SCATTERED THUNDERSTORMS ARE EXPECTED  
IN IDAHO AND MAY LEAD TO ERRATIC WINDS AND DRY LIGHTNING WHICH  
COULD SPAWN WILDFIRE ACTIVITY. A RED FLAG WARNING IS CURRENTLY IN  
EFFECT FOR THIS LOCATION.  
 
WIX  
 
GRAPHICS AVAILABLE AT  
WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  

 
 
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