840  
FXUS01 KWBC 051935  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
334 PM EDT THU JUL 05 2018  
 
VALID 00Z FRI JUL 06 2018 - 00Z SUN JUL 08 2018  
 
...FLASH FLOODING POSSIBLE FOR PORTIONS OF THE CENTRAL  
APPALACHIANS AND MID-ATLANTIC...  
   
..COOLER TEMPERATURES ON THE WAY FOR MUCH OF THE EASTERN U.S
 
 
A COLD FRONT IS WILL BE ACCOMPANIED BY SCATTERED TO NUMEROUS  
SHOWERS AND THUNDERSTORMS AS IT PASSES THROUGH AREAS FROM THE  
GREAT LAKES AND OHIO VALLEY TO THE EASTERN SEABOARD TONIGHT AND  
FRIDAY. LOCALLY HEAVY RAINFALL AND FLASH FLOODING ARE POSSIBLE FOR  
PORTIONS OF THE CENTRAL APPALACHIANS AND MID-ATLANTIC REGIONS.  
ADDITIONAL SHOWERS AND THUNDERSTORMS ARE EXPECTED ALONG THE  
WESTERN PORTION OF THE FRONTAL BOUNDARY, FROM THE CENTRAL HIGH  
PLAINS TO THE FRONT RANGE OF THE ROCKIES, WITH THE POTENTIAL FOR  
AREAS OF HEAVY RAIN. IN THE WAKE OF THE COLD FRONT, A COOLER AND  
DRIER AIR MASS WILL ACCOMPANY AN AREA OF HIGH PRESSURE MOVING INTO  
AREAS FROM THE MIDWEST TO THE MID-ATLANTIC AND NORTHEAST. AS THE  
MOTION OF THE COLD FRONT SLOWS ACROSS THE SOUTHERN/SOUTHEASTERN  
STATES FRIDAY NIGHT INTO SATURDAY, SHOWERS AND THUNDERSTORMS ARE  
EXPECTED TO PERSIST FOR THOSE AREAS.  
 
FARTHER WEST, ABOVE AVERAGE TEMPERATURES ARE EXPECTED ACROSS MUCH  
OF THE WESTERN U.S. THROUGH THE WEEKEND ON THE WESTERN EXTENT OF A  
MID/UPPER-LEVEL RIDGE OF HIGH PRESSURE. THE LARGEST TEMPERATURE  
ANOMALIES ARE EXPECTED FROM THE NORTHERN ROCKIES TO THE NORTHERN  
PLAINS, WHERE HIGH TEMPERATURES FRI AND SAT COULD REACH 15 DEGREES  
ABOVE AVERAGE. A COLD FRONT WILL ATTEMPT TO MAKE INROADS INTO THE  
RIDGE ON SATURDAY, WITH THE POTENTIAL FOR A FEW ISOLATED OR  
SCATTERED THUNDERSTORMS. ACROSS THE SOUTHWEST, SCATTERED  
AFTERNOON/EVENING THUNDERSTORMS ARE EXPECTED DAILY AS SOME  
MONSOONAL MOISTURE BEGINS TO SPREAD INTO THE REGION.  
 
RYAN  
 
GRAPHICS AVAILABLE AT  
WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  

 
 
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