124  
FXUS01 KWBC 010747  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
346 AM EDT WED AUG 1 2018  
 
VALID 12Z WED AUG 1 2018 - 12Z FRI AUG 3 2018  
 
...UNSETTLED WEATHER PATTERN CONTINUES THE EASTERN U.S. AND HEAT  
WAVE GRADUALLY ABATING ACROSS THE WEST...  
 
UNSETTLED WEATHER WILL CONTINUE TO BE THE CASE FOR MUCH OF THE  
EASTERN U.S. THROUGH THURSDAY OWING TO A STALLED OUT FRONTAL  
BOUNDARY FROM TEXAS TO THE OHIO VALLEY, AND A LARGE SCALE UPPER  
LEVEL TROUGH EXTENDING FROM THE GREAT LAKES TO THE MID SOUTH. THE  
RESPONSE TO THIS IN THE LOW LEVELS WILL BE DEEP MOISTURE SURGING  
NORTHWARD OVER THE EASTERN U.S., AIDED BY SOUTHERLY FLOW ON THE  
WESTERN EDGE OF THE BERMUDA HIGH. IT WILL BE WARM AND QUITE HUMID  
WITH DAILY CHANCES FOR RAIN FROM THE GULF COAST TO NEW ENGLAND.  
EPISODES OF HEAVY RAIN ARE EXPECTED TO MATERIALIZE IN THIS TYPE OF  
WEATHER PATTERN AND PERIODIC INSTANCES OF FLASH FLOODING ARE  
POSSIBLE. THIS IS ESPECIALLY FROM THE FLORIDA PANHANDLE AND  
EXTENDING ACROSS THE SOUTHERN AND CENTRAL APPALACHIANS.  
 
PERSISTENT UPPER LEVEL RIDGING ACROSS THE WESTERN U.S. WILL LEAD  
TO MAINLY DRY CONDITIONS FOR THE PACIFIC NORTHWEST AND MUCH OF THE  
INTERMOUNTAIN WEST. TEMPERATURES ARE EXPECTED TO BE ABOVE NORMAL  
FOR MUCH OF THIS REGION, BUT IMPROVING COMPARED TO THE PAST COUPLE  
OF DAYS. POOR AIR QUALITY WILL ALSO BE AN ISSUE FOR SOME OF THESE  
AREAS, ESPECIALLY NEAR ANY ACTIVE WILDFIRES. FOR THE SOUTHWESTERN  
U.S., MONSOONAL MOISTURE IS EXPECTED TO REMAIN ACROSS MUCH OF  
ARIZONA AND NEW MEXICO WITH SCATTERED THUNDERSTORMS DEVELOPING  
MAINLY DURING THE AFTERNOON AND EVENING HOURS.  
 
D. HAMRICK  
 
GRAPHICS AVAILABLE AT  
WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  

 
 
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