379
FXUS66 KPDT 031734
AFDPDT
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
1034 AM PDT FRI JUL 3 2026
KEY MESSAGES
- BREEZY DIURNAL WINDS THROUGH SATURDAY.
- ENHANCED FIRE WEATHER CONCERNS ON SATURDAY.
- WARMING AND DRYING THROUGH NEXT WEEK.
DISCUSSION
ZONAL FLOW IS EXPECTED OVER THE REGION THROUGH SATURDAY, THEN
THE FLOW WILL BECOME MORE SOUTHWESTERLY. AS A RESULT,
TEMPERATURES ARE EXPECTED TO WARM, PEAKING MONDAY AND TUESDAY
BEFORE DECREASING.
HIGHS ON MONDAY AND TUESDAY WILL BE INTO THE 90S IN MOST LOWER
ELEVATION LOCATIONS, WITH THE COLUMBIA BASIN IN THE MID TO UPPER
90S, AND 100 DEGREES CAN NOT BE RULED OUT. THESE TEMPERATURES
WILL BE ABOUT 10 TO 15 DEGREES ABOVE NORMAL. AFTER TUESDAY,
TEMPERATURES WILL RETURN TO CLOSER TO NORMAL VALUES.
THERE WILL BE BREEZY AFTERNOON WINDS THROUGH SATURDAY, IN THE 25
TO 35 MPH RANGE ACROSS THE KITTITAS VALLEY, SIMCOE HIGHLANDS AND
PORTIONS OF THE COLUMBIA BASIN AND GORGE. THESE WINDS, COUPLED
WITH RH VALUES GENERALLY IN THE TEENS ON SATURDAY WILL CREATE
ENHANCED FIRE WEATHER CONCERNS AND A FIRE WEATHER WATCH HAS BEEN
ISSUED FOR PORTIONS OF THE LOWER COLUMBIA BASIN OF OREGON (ZONE
OR691) AND WE WILL HAVE TO MONITOR TO SEE IF ANY ADDITIONAL
WATCHES OR WARNINGS ARE NEEDED IN OTHER AREAS.
IN THE SOUTHWESTERLY FLOW, SUNDAY INTO MONDAY THERE IS A LOW
(<20 PERCENT) CHANCE OF SHOWERS AND THUNDERSTORMS, MAINLY OVER
THE MOUNTAINS OF EASTERN OREGON. IF THERE IS ENOUGH LIGHTNING,
THESE LOCATIONS WILL HAVE TO BE MONITORED AS WELL FOR FIRE
WEATHER HEADLINES.
BY WEDNESDAY, THE FLOW BECOMES MORE WESTERLY ONCE AGAIN. WINDS
WILL INCREASE, ESPECIALLY ACROSS THE OREGON BASIN BUT WITH
COOLER TEMPERATURES, RH VALUES WILL ALSO BE HIGHER, BUT ONCE
AGAIN, WILL CONTINUE TO MONITOR THESE AREAS.
AVIATION /18Z TAFS THROUGH 18Z SATURDAY/
VFR CONDITIONS TO
PREVAIL THROUGH THE PERIOD. BREEZY WINDS WILL IMPACT SITE DLS
THROUGH THIS EVENING, THEN REDEVELOP TOMORROW MORNING.
OTHERWISE, WINDS WILL BE LIGHT AND DIURNALLY DRIVEN AT ALL OTHER
SITES THROUGH THE PERIOD. LAWHORN/82
PRELIMINARY POINT TEMPS/POPS
PDT 85 54 88 52 / 0 0 0 0
ALW 86 60 89 58 / 0 0 0 0
PSC 89 57 92 55 / 0 0 0 0
YKM 88 56 91 54 / 0 0 0 0
HRI 88 58 91 56 / 0 0 0 0
ELN 83 53 83 51 / 0 0 0 0
RDM 86 48 88 49 / 0 0 0 0
LGD 85 53 88 53 / 0 0 0 0
GCD 87 51 92 52 / 0 0 0 0
DLS 86 57 87 56 / 0 0 0 0
PDT WATCHES/WARNINGS/ADVISORIES
WA...OR...RED FLAG WARNING FROM NOON TO 10 PM PDT SATURDAY FOR ORZ691.
DISCUSSION...77
AVIATION...82
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