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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