603
FXUS66 KPDT 061723
AFDPDT
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
1023 AM PDT WED AUG 6 2025
.UPDATED AVIATION.
AVIATION...18Z TAFS
A FRONTAL PASSAGE IS BRINGING WIDESPREAD
STRATIFORM PRECIPITATION ACROSS THE AREA. THE ONLY SITES NOT BEING
IMPACTED BY RAIN IS BDN/RDM. EVERYONE ELSE IS INITIALIZING WITH
LIGHT RAIN AND SHOULD LAST UNTIL THE EARLY EVENING HOURS. NOT
EXPECTING ANY THUNDERSTORM THREATS, AS THE STORMS WILL BE SECLUDED
THROUGH THE WA CASCADES THIS AFTERNOON. SOME HEAVIER PASSING RAIN
SHOWERS COULD DIP VISIBILITIES BRIEFLY IN THE 4-5 MILE RANGE, BUT
OTHERWISE EXPECTING VFR CONDITIONS TO PREVAIL FOR THE MOST PART.
PREV DISCUSSION... /ISSUED 152 PM PDT TUE AUG 5 2025/
DISCUSSION...CURRENT CONDITIONS SHOW CLOUDS CLEARING OUT IN THE
EARLY AFTERNOON. TEMPERATURES WARMED UP A LITTLE BIT THANKS TO THE
CLEARING PATTERN OVER THE REGION. RH LEVELS IN THE WARM SPRINGS
RESERVATION ARE LOWER THAN PREVIOUSLY THOUGHT WITH WINDS REACHING
CRITERIA. GIVEN THAT, WE ISSUED A RED FLAG WARNING FOR THE ORZ703
UNTIL 8PM THIS EVENING. NOT EXPECTING ANYMORE RED FLAGS FOR TODAY,
HOWEVER THE BASIN (ORZ691) IS INCHING NEAR RED FLAG STATUS.
LOCALIZED POCKETS MIGHT REACH CRITERIA, BUT NOTHING WIDESPREAD
ENOUGH TO ISSUE RFW'S.
FIRE WEATHER CONDITIONS ARE NOT AS CONDUCIVE THROUGH THE MIDDLE OF
THE WEEK, GOING CLOSE TO THE WEEKEND. EXPECT THE NEXT COUPLE OF
DAYS TO BE MORE CLOUDY, COOLER, AND RAINIER AS A SHORTWAVE DIGS
DOWN FROM THE GULF OF ALASKA/BRITISH COLUMBIA SHORELINE. THIS
PATTERN WILL BRING MAINLY STRATIFORM RAIN SHOWERS THROUGH THE
BASIN AND MUCH OF THE MOUNTAIN ZONES. CHANCES OF SOME SCATTERED
THUNDERSTORMS (15-25% CHANCE) GO UP FOR PARTS OF THE WA CASCADES,
WITH PEAK STORM INTENSITY IN THE EARLY TO MID AFTERNOON HOURS. THE
TROUGH WILL BECOME MORE AMPLIFIED GOING INTO THURSDAY, SPREADING
RAIN CHANCES FOR MUCH OF THE BASIN, KITTITAS VALLEY, AND LARGE
PORTIONS OF THE EASTERN MOUNTAINS. LARGEST CAPE VALUES, ACCORDING
TO THE NBM, ARE LOCATED IN WALLOWA COUNTY AND PORTIONS OF EASTERN
WASHINGTON (200-400 J/KG). THIS IS WHERE THE STRONGEST STORMS ARE
EXPECTED GOING THROUGH THURSDAY. CAN'T RULE OUT THE POSSIBILITY
THAT SOME OF THESE STORMS PRODUCE PEA SIZE HAIL WITH GUSTY OUTFLOW
WINDS.
THE PATTERN WILL FLIP TO A DRY, WARMER SCENARIO AS RIDGING RE-
ENTERS THE PICTURE. HIGH TEMPERATURES WILL GRADUALLY WARM INTO
THE LOW TO MID 90S FROM SATURDAY TO TUESDAY. A LITTLE UNCERTAIN
ABOUT EXACT DETAILS OF HOW WARM IT WILL GET DUE TO UNCERTAINTY OF
THE STRENGTH OF THE RIDGE. CLUSTERS FORM A DISAGREEMENT ON THIS
ISSUE WITH 47% BRINGING ON A STRONGER RIDGE ALONG WITH WARMER
TEMPERATURES, WHILE 21% ACTUALLY BRING COOLER TEMPERATURES. FIRE
WEATHER CONCERNS RETURN REGARDLESS OVER THE WEEKEND INTO EARLY
NEXT WEEK, AS DRY AND BREEZY CONDITIONS MAKE OUR SOUTHERN FIRE
WEATHER ZONES MORE SUSCEPTIBLE TO ELEVATED FIRE CONCERNS.
PRELIMINARY POINT TEMPS/POPS
PDT 58 79 51 84 / 20 20 0 0
ALW 62 79 56 84 / 20 30 10 0
PSC 58 82 52 86 / 20 10 0 0
YKM 53 79 53 87 / 30 10 0 0
HRI 60 82 53 86 / 10 10 0 0
ELN 53 74 52 83 / 40 10 0 0
RDM 48 79 41 84 / 10 0 0 0
LGD 55 75 46 81 / 20 30 10 0
GCD 53 78 45 82 / 10 10 0 0
DLS 60 78 56 85 / 30 0 0 0
PDT WATCHES/WARNINGS/ADVISORIES
OR...NONE.
WA...NONE.
SHORT TERM...95
LONG TERM....95
AVIATION...95
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