223
FXUS66 KPDT 131406 CCA
AFDPDT
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
606 AM PST FRI FEB 13 2026
KEY MESSAGES
- PATCHY DENSE FOG POSSIBLE OVERNIGHT.
- PRECIP ACTIVITY RETURNS TODAY THROUGH THIS WEEKEND.
- HEAVY MOUNTAINS SNOW ACCUMULATIONS MONDAY ONWARD NEXT WEEK.
DISCUSSION
PATCHY DENSE FREEZING FOG WILL REMAIN CONCENTRATED
ALONG THE COLUMBIA RIVER THROUGH MAJORITY OF THE NIGHT, WHICH LED TO
ISSUING AN AIRPORT WEATHER WARNING FOR KPSC REACHING TO A QUARTER
MILE OR LOWER. CURRENT NIGHT FOG SATELLITE IMAGERY SHOW SOME PATCHY
FOG DEVELOPING ALONG I-84 AT BOARDMAN AND UPPER PARTS OF THE GRANDE
RONDE VALLEY. THE MODELS (HRW NSSL, HRRR, AND NAM CONUS NEST) ARE
ALIGNED WITH THE FOG LASTING THROUGH LATER THIS MORNING OVER THE
COLUMBIA RIVER. VISIBILITIES AROUND KPSC ARE CURRENTLY OBSERVED WITH
1/4SM OR LESS (>70% CONFIDENCE), BUT CONDITIONS SHOULD BEGIN
IMPROVING DURING MORNING HOURS TODAY.
AS THE 500MB PATTERN BECOMES MORE ZONAL, PRECIP ACTIVITY WILL RETURN
LATER THIS MORNING/EARLY AFTERNOON AS THE FRONTAL SYSTEM MAKES ITS
WAY TO THE PACNW. A WEAK ATMOSPHERIC RIVER (250-300 KG M/S) MAY
INFLUENCE MORE PRECIP TO DEVELOP ALONG THE WA/OR CASCADES TODAY.
PRECIP MAY LINGER THROUGH SATURDAY ACROSS OUR FORECAST AREA BEFORE
THE LOWER ELEVATIONS GOES INTO A DRY PERIOD SUNDAY WITH A TILTED
RIDGE. HOWEVER, LIGHT PRECIP MAY CONTINUE FOR THE MOUNTAIN AREAS.
STORM TOTAL QPF AMOUNTS FROM THIS MORNING THROUGH EARLY SUNDAY
MORNING FOR THE LOWER ELEVATIONS WILL EXCEED 0.05 INCH OR MORE WITH
0.25 INCH OR HIGHER FOR THE NORTHWEST BLUES AND WA/OR CASCADES. FOR
THE REMAINING SUNDAY WITH LINGERING PRECIP, QPF AMOUNTS FOR OR
CASCADES AND NORTHWEST BLUES MAY EXCEED 0.10 INCH OR HIGHER WITH THE
WALLOWA COUNTY AT 0.10 INCH OR LESS. SNOW ACCUMULATIONS OF 2 TO 5
INCHES WILL DEVELOP FOR THE NORTHWEST BLUES, WA CASCADES AND
SOUTHERN PARTS OF WALLOWA COUNTY FOR FRIDAY THROUGH SATURDAY
(40-50% CONFIDENCE). SUNDAY IS WHEN SNOW ACCUMULATIONS TREND
DOWNWARD TO AN INCH OR LESS FOR THESE AREAS.
MONDAY THROUGH THURSDAY MORNING, WE WILL START TO SEE HEAVY SNOW
ACCUMULATIONS OVER THE MOUNTAIN AREAS WITHIN A 72-HR PERIOD (12Z
MONDAY THROUGH 12Z THURSDAY). SNOW LEVELS MAY DROP BELOW 3.5 KFT
MONDAY ONWARDS WHERE WINTER WEATHER ADVISORIES MAY BE CONSIDERED
WITH WA/OR CASCADES AND THE NORTHWEST BLUES SEEING A 3-DAY STORM
TOTAL SNOW EXCEEDING 5 INCHES OR MORE (50% CONFIDENCE). THE
PROBABILITY FOR SNOW AMOUNTS EXCEEDING 10 INCHES OR MORE IS 50-70%
TUESDAY THROUGH THURSDAY FOR OR CASCADES AND NORTHWEST BLUES. GIVEN
THAT THIS SNOW FORECAST BEING 4+ DAYS OUT, CONFIDENCE WILL BE LOW
(<30%) AT THIS TIME. FEASTER/97
AVIATION /12Z TAFS THROUGH 12Z SATURDAY/
VFR CONDITIONS WILL
PREVAIL FOR MOST SITES THROUGH THE PERIOD WITH THE EXCEPTION OF KPSC
BEING IN VLIFR THROUGH THE NIGHT. DUE TO THE ONGOING DENSE FREEZING
FOG, AN AIRPORT WEATHER WARNING WAS ISSUED FOR KPSC THROUGH 10AM PST
THIS MORNING. KPSC SHOULD SEE CONDITIONS IMPROVE DURING THE MORNING
HOURS. OTHERWISE, ALL SITES MAY HAVE LIGHT RAIN LATER THIS AFTERNOON
WHEN THE FRONTAL SYSTEM APPROACHES (<30% PROBABILITY). FEASTER/97
PRELIMINARY POINT TEMPS/POPS
PDT 37 47 34 47 / 30 40 70 20
ALW 40 48 37 47 / 40 60 80 40
PSC 36 51 34 51 / 30 20 50 10
YKM 32 47 31 46 / 40 20 20 10
HRI 37 48 36 49 / 20 30 60 10
ELN 30 42 28 41 / 50 20 20 10
RDM 30 45 28 46 / 20 40 30 10
LGD 35 47 34 50 / 30 80 70 50
GCD 35 48 33 50 / 10 70 40 20
DLS 38 48 37 48 / 60 50 50 20
PDT WATCHES/WARNINGS/ADVISORIES
WA...NONE.
OR...NONE.
DISCUSSION...97
AVIATION...97
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page