685  
FXUS66 KPDT 161132 AAA  
AFDPDT  
 
AREA FORECAST DISCUSSION  
NATIONAL WEATHER SERVICE PENDLETON OR  
430 AM PDT TUE JUL 16 2019  
 
UPDATED AVIATION DISCUSSION.  
   
SHORT TERM...TODAY THROUGH THURSDAY
 
A WEAK DISTURBANCE EMBEDDED  
IN AN UPPER TROUGH WILL MOVE ACROSS THE FORECAST AREA TODAY. THERE  
MAY BE ENOUGH MOISTURE FOR SOME LIGHT RAIN SHOWERS IN THE WASHINGTON  
CASCADES AND POSSIBLE ISOLATED AFTERNOON THUNDERSTORMS OVER WALLOWA  
COUNTY. THERE IS ONLY AN AREA WITH A "GENERAL" CHANCE OF WEAK  
THUNDERSTORMS OVER PORTIONS OF THE FORECAST AREA BY SPC. A DRIER AND  
MORE STABLE NORTHWEST FLOW BEHIND THE TROUGH WILL PREVAIL ON  
WEDNESDAY AND THURSDAY. THE UPPER LEVEL WINDS WILL INCREASE AS A JET  
STREAM MOVES OVER THE REGION. THIS WILL RESULT IN GUSTY WINDS TO MIX  
TO THE SURFACE DURING THE TIME OF MAXIMUM HEATING (AFTERNOON AND  
EARLY EVENING). TEMPERATURES WILL BE COOLER THAN NORMAL FOR THE NEXT  
FEW DAYS DUE TO CLOUDS AND THE RESULTANT MARINE PUSH OF AIR FROM THE  
WEST TO NORTHWEST. WIND SPEEDS ARE EXPECTED TO REMAIN BELOW WIND  
ADVISORY CRITERIA. 88  
   
LONG TERM
 
ONE FINAL DISTURBANCE WILL PASS THROUGH THE AREA ON  
FRIDAY; HOWEVER, LIMITED MOISTURE WILL KEEP MUCH OF THE REGION DRY  
WITH ONLY SLIGHT CHANCES FOR SHOWERS ALONG THE CASCADES. WITH THIS  
SYSTEM MOVING THROUGH, TEMPERATURES ARE EXPECTED TO BE BELOW AVERAGE  
WITH HIGHS IN THE 70S TO LOWER 80S FOR FRIDAY AFTERNOON. MODELS ARE  
IN FAIRLY GOOD AGREEMENT THAT AN UPPER LEVEL RIDGE WILL BEGIN TO  
DEVELOP OVER THE FOUR CORNERS REGION BY THIS WEEKEND AND STRENGTHEN  
OVER THE AREA HEADING INTO EARLY NEXT WEEK. THIS RIDGE WILL BRING  
DRY CONDITIONS AS WELL AS MORE TYPICAL JULY HEAT. RICHARDS  
 

 
   
AVIATION...12Z TAFS
 
VFR CONDITIONS ARE EXPECTED TO CONTINUE  
EVERYWHERE FOR TODAY. SCATTERED TO BROKEN CEILINGS CAN BE EXPECTED  
AT ALL SITES WITH CEILINGS REMAINING ABOVE 7,000 FT. GUSTY WINDS ARE  
POSSIBLE FOR KYKM, KDLS, KPDT, KBDN & KRDM WITH GUSTS BETWEEN 15-25  
KTS THIS AFTERNOON AND EVENING BEFORE DECREASING OVERNIGHT TONIGHT.  
RICHARDS  
 

 
   
PRELIMINARY POINT TEMPS/POPS
 
 
PDT 82 56 82 56 / 0 0 0 0  
ALW 85 61 85 60 / 0 0 0 0  
PSC 87 62 86 61 / 0 0 0 0  
YKM 84 56 83 55 / 0 0 0 0  
HRI 86 60 86 60 / 0 0 0 0  
ELN 79 56 76 55 / 0 0 0 0  
RDM 80 49 81 51 / 0 0 0 0  
LGD 78 54 80 55 / 0 0 0 0  
GCD 81 51 85 53 / 0 0 0 0  
DLS 83 61 80 62 / 0 0 10 0  
 

 
   
PDT WATCHES/WARNINGS/ADVISORIES
 
 
OR...NONE.  
WA...NONE.  
 

 
 

 
 
88/75/75  
 
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