821
FXUS66 KPDT 251134
AFDPDT
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
434 AM PDT SUN OCT 25 2026
KEY MESSAGES
- DRY CONDITIONS CONTINUE THROUGH THE OVERNIGHT HOURS WITH
ISOLATED FREEZING TEMPERATURES IN THE LOWER ELEVATION AREAS.
- PATTERN SHIFTS THROUGH THE WEEK WITH PERIODS OF SHOWER
ACTIVITY ACROSS THE REGION.
- COOLER PATTERN DEVELOPS THROUGH THE WEEK (50-70% CHANCE) WITH
HIGH TEMPERATURES DROPPING DOWN THE LOW 50S IN THE LOWER
ELEVATED AREAS (50-70% CHANCE).
DISCUSSION
SATELLITE ADVERTISES A LOW PRESSURE SYSTEM OFF THE COAST OF THE
PACNW, BRINGING MODERATE TO HEAVY SHOWERS WEST OF THE CASCADES.
SPILLOVER IS CURRENTLY BRINGING SOME LIGHT RETURNS ON RADAR IN
THE CASCADES AND WE WILL SEE THE LINE OF SHOWERS CONTINUE TO
MOVE EAST OVER THE NEXT 24 TO 48 HOURS. GUIDANCE IS IN GOOD
AGREEMENT THE LOW PRESSURE SYSTEM TO CONTINUE PUSHING TO THE
EAST, BRINGING POP'S UP TO 20-40% ACROSS THE CASCADES AND
EASTERN SLOPES OF THE CASCADES (INCLUDING CENTRAL OREGON)
THROUGH TODAY. AS THE SYSTEM MOVES ALONG, IT WILL BRING THE
GREATEST CHANCE OF PRECIP IN THE SHORT TERM FOR THE ENTIRE
REGION (20-50% POPS) MONDAY. NBM ADVERTISES THE HEAVIEST RAINS
ALONG THE EASTERN MOUNTAINS AND PARTS OF THE NORTHERN BLUES
WHERE IT'S ADVERTISING WETTING RAINS (>.1") THROUGH TUESDAY
MORNING (70-80% CHANCE).
SYNOPTIC ENSEMBLES PAINT A STORY THAT SHOWS ANOTHER SHORTWAVE
DROPPING DOWN FROM BRITISH COLOMBIA THROUGH THE MID-WEEK THAT
WILL BRING ANOTHER ROUND OF WET PRECIPITATION. GUIDANCE IS
SOMEWHAT EVENLY SPLIT WITH IMPACTS WITH THE AGREEMENT ON
STRENGTH AND LOCATION OF THE TROUGH. CLUSTERS THROUGH THURSDAY
NIGHT ADVERTISE 48% OF MEMBERS SHOWING A STRONGER/WETTER PATTERN
THAT MOSTLY CONSIST OF THE EURO AND CANADIAN MODELS, WHILE THE
GFS SOLUTIONS BRINGS A DRIER SOLUTION TO THE TABLE. GUIDANCE
BECOMES EVEN MORE SPLIT BY SATURDAY NIGHT WITH ALMOST EXACTLY
50% OF MEMBERS SHOWING EITHER AN OPEN WAVE/DRY SET-UP OR A MORE
CLOSED-OFF LOW WITH A WETTER SOLUTION. STILL PLENTY OF TIME TO
MONITOR THE SET-UP, BUT FOR NOW NOT SEEING ANY IMMEDIATE IMPACTS
TO THE AREA AT THIS TIME.
AVIATION /12Z TAFS THROUGH 12Z MONDAY/
VFR CONDITIONS CURRENTLY PREVAIL THROUGH THE PERIOD. PRECIP
DEVELOPS WITH PROB30'S FOR RDM/BDN/YKM/DLS OVER THE NEXT
24-HOURS. SMALL CHANCES PERSIST (5-15%) FOR EACH SITE TO
TEMPORARY DROP DOWN TO MVFR WITH SOME OF THE HEAVIER SHOWERS
BRINGING LESS THAN 3000 FOOT OVERCAST SKIES AT TIMES. BREEZY
WINDS DEVELOP IN RDM AND BDN IN THE LATE MORNING HOURS THROUGH
THE AFTERNOON, BUT GUIDANCE KEEPS MOST WIND GUSTS LESS THAN 30
KNOTS OVERALL.
PRELIMINARY POINT TEMPS/POPS
PDT 61 32 55 37 / 0 10 30 30
ALW 62 38 55 42 / 0 0 40 50
PSC 58 36 58 39 / 0 10 30 0
YKM 57 37 58 35 / 10 20 20 0
HRI 59 34 58 40 / 0 20 20 10
ELN 53 31 54 31 / 10 30 50 10
RDM 64 30 50 32 / 0 40 60 20
LGD 61 37 54 36 / 0 0 80 70
GCD 64 34 53 34 / 0 0 70 30
DLS 59 40 59 42 / 10 30 50 20
PDT WATCHES/WARNINGS/ADVISORIES
WA...NONE.
OR...NONE.
DISCUSSION...95
AVIATION...95
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page