903
FXUS66 KPDT 062029
AFDPDT
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
129 PM PDT MON OCT 6 2025
DISCUSSION
CLEAR SKIES PREVAIL ACROSS THE PACNW THIS AFTERNOON,
SAVE FOR SOME PATCHY HAZE AND SMOKE ALONG THE CENTRAL WA CASCADES AS
AREA WILDFIRES CONTINUE TO BURN. HIGH PRESSURE WILL OTHERWISE MAKE
FOR QUIET WEATHER THROUGH THE MIDWEEK. OVERNIGHT LOWS WILL BE CHILLY
ONCE AGAIN, FLIRTING WITH AND EVEN DROPPING BELOW FREEZING ACROSS
OUR ELEVATED VALLEYS, BUT WITH MANY SUCH AREAS SEEING A SEASON-
ENDING FREEZE LAST NIGHT (NAMELY CENTRAL OREGON, THE JOHN DAY BASIN,
WALLOWA VALLEY, AND GRANDE RONDE VALLEY), FREEZE WARNINGS ARE NOT
ANTICIPATED. THE KITTITAS VALLEY IN PARTICULAR DROPPED BELOW
FREEZING LAST NIGHT, AND COULD ONCE AGAIN TONIGHT, HOWEVER
CONFIDENCE IS LOW (20%) AS TEMPS WILL BE HIGHER DURING THE DAY TODAY
COMPARED TO YESTERDAY. DID MAKE MENTION OF PATCHY FROST IN THE AREA
OVERNIGHT TONIGHT, HOWEVER.
AROUND WEDNESDAY, HIGH PRESSURE WILL MOVE OUT AS A BROAD LOW
PRESSURE SYSTEM STEMMING FROM THE GULF OF ALASKA WILL DROP DOWN AND
BECOME NEARLY STATIONARY JUST OFF THE PACIFIC COAST, MAKING FOR
PERSISTENT POPS ACROSS AT LEAST THE CASCADES AND EAST SLOPES
WEDNESDAY AND THURSDAY. THE LOW WILL RETROGRADE SLIGHTLY BEFORE
MAKING ITS ONSHORE PUSH NEXT WEEKEND, MAKING FOR MORE WIDESPREAD
PRECIP CHANCES. WILL THIS FINALLY BE WHAT KILLS OFF THE REMAINING
WILDFIRES IN THE REGION? NBM DOES SEEM RELATIVELY CONFIDENT (70-80%)
IN QPF OVER HALF AN INCH FOR THE CASCADES, WITH AREAS OVER 5500 FT
POTENTIALLY SEEING SOME LIGHT SNOW AS WELL WITH THIS LOW PULLING IN
COLDER AIR. NBM ISN'T QUITE AS CONFIDENT IN WETTING RAINS ACROSS THE
LOWER ELEVATIONS (30-40%) THROUGH NEXT WEEKEND, BUT WE ARE RAPIDLY
APPROACHING THE TIME OF YEAR WHERE ALL WE NEED IS A DECENT,
WIDESPREAD WETTING RAIN OVER A QUARTER OF AN INCH TO PUT AN END TO
WILDFIRE SEASON FOR THE YEAR.
ENSEMBLES ARE IN PRETTY GOOD AGREEMENT ON THIS LOW BEING THE
DOMINANT SYNOPTIC FEATURE OF THE NEXT WEEK, ONLY DIVERGING EARLY
NEXT WEEK ONCE THE LOW FINALLY SHIFTS OUT OF THE REGION. AS A
RESULT, EXPECT A CLOUDY, COOL, AND WET FORECAST TO DOMINATE AFTER
TUESDAY AS AUTUMN REALLY STARTS TO SETTLE IN OVER THE REGION.
EVANS/74
AVIATION...18Z TAFS (PREVIOUS DISCUSSION)
TAFS ARE GENERALLY
VFR FOR THE MOST PART WITH THE ONLY EXCLUSION OF SOME TEMPO HAZE
IN YKM THAT HAS BROUGHT VIS DOWN TO MVFR. WILL EXPECT TO MOVE OUT
LATER ON AND REMAIN VFR FOR THE REMAINDER OF THE PERIOD. WINDS FOR
THE MOST PART ARE GENERALLY LIGHT AND VARIABLE WITH CLEAR SKIES
DOMINATING.
PRELIMINARY POINT TEMPS/POPS
PDT 69 40 74 43 / 0 0 0 0
ALW 69 45 74 48 / 0 0 0 0
PSC 70 37 72 40 / 0 0 0 0
YKM 70 41 72 41 / 0 0 0 0
HRI 70 38 73 41 / 0 0 0 0
ELN 69 37 70 38 / 0 0 0 0
RDM 68 31 75 34 / 0 0 0 0
LGD 66 35 72 42 / 0 0 0 0
GCD 68 36 73 38 / 0 0 0 0
DLS 73 44 76 46 / 0 0 0 0
PDT WATCHES/WARNINGS/ADVISORIES
OR...NONE.
WA...NONE.
SHORT TERM...74
LONG TERM....74
AVIATION...95
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