Vancouver, Virginia 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

988
FXUS66 KPQR 151018
AFDPQR

Area Forecast Discussion
National Weather Service Portland OR
318 AM PDT Thu May 15 2025

.SYNOPSIS...A progressive weather pattern will bring periods of
light rain through the weekend, and possibly into early next
week. Expect temperatures to remain slightly below average
during this period. Light, steady rain expected as a weak front
moves across the area later today. Rain showers increase late
Friday night through Saturday, along with a 10-20% chance of
thunderstorms Sat afternoon. Lingering showers into Sunday,
though most areas likely drier.

&&

.DISCUSSION...Now through Wednesday...Dry conditions continue
through much of the morning before the next round of light rain
moves into the area. Temps will be around 5 degrees below
average for this time of year with highs peaking in the low 60s
inland and mid 50s along the coast. 24 hour rainfall totals from
Thursday 11am to Friday 11am are expected to be less than a
tenth of an inch with probabilities inland of 10-30% and a bit
better at 40-70% along the coast and higher terrain, higher
totals are favored north given the track of the disturbance.
Highs again peak below average Friday afternoon, mid 60s inland
and upper 50s along the coast.

The active pattern is expected to continue late Friday into Saturday
as the strongest system of the week drops southward along the
British Columbia coast, digging into the PacNW coast. Rain will
still be light with this system but the probabilities for a tenth and
possibly a quarter of an inch are decent across much of the area. 24
hour probs for a tenth of an inch from 5pm Friday through 5pm
Saturday are 50-70% west of the Cascades and generally greater than
70% along the higher terrain. Probabilities for a quarter of an inch
during the same time frame are 20-40% west of the Cascades and 40-
70% for the higher terrain. There is also a 10-20% chance for
thunderstorms Saturday afternoon and evening.

Sunday through Tuesday should be drier as weak ridging edges into
the region. However, model guidance does show potential for another
weak shortwave to cross the area Monday into Tuesday which could
bring more light rain. Temps during this period should increase back
close to normal, into the upper 60s by Tuesday. Model agreement
decreases further into the middle of next week with some showing a
warm up towards normal while others show the cloudy, cool pattern
persisting. -Batz

&&

.AVIATION...Bkn-ovc VFR cigs around 4-6 kft continue at terminals
across the region as a shortwave ridge passes overhead, however
periods of MVFR vis/cigs along the coast remain possible through
the morning within the shallow marine boundary. Inland, cloud
cover will stymie widespread fog development overnight, while
probabilities of MVFR cigs remain less than 25% into Thursday
afternoon. A weak disturbance will approach the region Thursday
afternoon into the evening, bringing a high likelihood of MVFR
cigs to coastal terminals after 21-24z Thu with scattered light
rain showers which may briefly restrict vis. Chances for MVFR cigs
increase to 30-50% at inland terminals by 00-03z Fri with similar
vis restrictions within light showers possible but low probability.
Along the coast, winds will back from the northwest/west to the
southwest/south at 10 kt or less through the period. Inland, calm
to light and variable winds will increase out of the northwest to
west at around 5 kt this afternoon, before subsiding this evening.

PDX AND APPROACHES...VFR conditions expected through this morning
as weak high pressure passes overhead. Chances for MVFR cigs
increase to 30-50% after 00z Fri and further to 50-70% after 06z
Fri as a weak disturbance arrives. Light rain showers may briefly
restrict vis to MVFR through the afternoon and evening, but
confidence in terminal impacts remains low. -Picard

&&

.MARINE...Seas of 5-7 ft at 9-10 seconds will continue to slowly
subside to 4-6 ft by early Friday morning. Northwest winds of
less than 10 kt will back out of the southwest to south through
tonight, increasing to 10-15 kt on Friday as a reinvigorated
northwest swell arrives ahead of a frontal system. South to
southwest flow ahead of the front will veer back out of the
northwest in its wake, with a 25-45% chance of gale-force gusts
beyond 30 NM on Saturday, decreasing to 5-20% on Sunday. -Picard

&&

.PQR WATCHES/WARNINGS/ADVISORIES...

OR...None.
WA...None.
PZ...None.

&&

$$

www.weather.gov/portland

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