Heavy rain resulted in damage to Highway 6 around 15 minutes west of Banks in Washington County.
Every event with a place to put it. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS PQR wrote it up.
Heavy rain resulted in damage to Highway 6 around 15 minutes west of Banks in Washington County.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Portland, OR wrote its last area forecast discussion before the first event at Nov 20, 2:56 AM PST, 5 hours 4 minutes earlier.
Area Forecast Discussion
National Weather Service Portland OR
256 AM PST Wed Nov 20 2024
.SYNOPSIS...Showers continue today into Thursday. Another
weather system may bring another round of wind impacts as well
as widespread rain late Thursday into Friday, but forecast
confidence remains low at this time. Showery weather continues
through the weekend into early next week with limited mountain
snow impacts after this morning.
&&
.DISCUSSION...Wednesday through Tuesday...Satellite imagery
as of 2 AM Wednesday morning is still a sight to behold. The
strong low pressure system remains spinning with the center of
the low around 48N/130W while the strong moisture plume
associated with the atmospheric river is pushing south of our
area into southern Oregon and northern California. Also visible
on satellite imagery as well as through observations is the
occluded front that has finally begun to push inland in the
past couple of hours, stretching from around the Puget Sound to
around the Newport area. The front has been slowly weakening as
it slowly moves east, which will continue to happen as it moves
east through the morning, reaching the Cascades around midday.
Stratiform rain remains along and east of the front with showers
in the wake of the front, continuing through the day. Winds
have already been diminishing from the strongest gusts over the
past few hours, so the High Wind Warning and Wind Advisory are
no longer in effect. Gusty winds will continue through the
morning hours with gusts up to 25 mph inland, occasionally up to
30 mph at time, and up to 30-40 mph along the coast. Also could
see a few rumbles of thunder along the coast and over the
coastal waters. A Winter Weather Advisory remains in effect for
the Cascades through 10 AM where snow levels will reside around
4000-4500 feet through this evening. Additional snow amounts up
to 5 inches are possible at the passes through 10 AM with the
stratiform precipitation, with minimal additional accumulations
after this in the showery regime.
Showery weather continues into Thursday, before attention
quickly turns to the next system to potentially impact the area
Thursday night into Friday. Models are coming into better
agreement on depicting another low developing off the northern
California coast Thursday night and tracking rapidly northward
towards the Washington coast on Friday. From a conceptual
standpoint, this would be a more favorable track for bringing
wind to the interior valleys on Friday, but the precise track
and intensity of the low will have large implications on the
forecast. There is still quite a bit of model spread with regard
to these details, which will obviously bear close watching over
the next 24-48 hours. For now, NBM probabilistic guidance
depicts a 50-70 percent chance for 50 mph wind gusts along the
coast and a 20-40 percent chance for 40 mph wind gusts in the
Willamette Valley on Friday.
The GFS and Euro ensembles are coming into much better
agreement of the amount of Pacific moisture this weather system
will pull back north into NW Oregon and SW Washington. The 00z
runs of ensembles suggest the IVT plume will peak around 500
kg/ms for less than 24 hours on Friday, indicative of a weaker
moisture plume than the one that just impacted the area. Model
QPF remains in line with previous thinking with 48 hour rain
amounts ending 4 AM Saturday ranging from 1.25-2.5" along the
coast, 1.5-2.5" over the mountains, and 0.75-1.25" inland. Hydro
impacts continue to appear rather minimal as a result, with
latest HEFS guidance of probabilities of reaching minor flood
stage on the more responsive rivers draining the coast range
lowering to 5-10%. Winter weather impacts will also be minimal
as snow levels rise above 7000 feet on Thursday. Otherwise,
showery conditions look to persist into this weekend and beyond
as medium range guidance continues to depict upper level
troughing lingering over the NE Pacific through the weekend and
into early next week. /CB/HEC
&&
.AVIATION...A mixture of low-end VFR and high-end MVFR conditions
(CIGS between 2500-3500) as precipitation slowly subsides and the
post frontal environment develops. Southerly winds with gusts to
35 kt along the coast through 10Z Thursday. Inland locations
expect easterly becoming southerly winds for KPDX, KHIO and KTTD,
with southerly winds for other inland locations. As the day
progresses, winds will gradually weaken and rain will become more
showery.
PDX APPROACHES...Mixture of low-end VFR and MVFR conditions (CIGS
between 2500-3500) through the TAF period. East winds 10-15 kt
becoming south less than 10 kt around 00Z Thursday. /42
&&
.MARINE...Strong Gales across all waters through tonight with seas
around 20 to 26 ft. Winds will fall below Gales by tonight, but
seas will take a much longer time to fall below 20 ft. Seas will
slowly subside through Thursday towards 17 to 19 ft. As a result
have issued a Hazardous Seas Warning for all waters starting
tonight.
There is little reprieve this week as the next system is expected
to bring another round of elevated winds and seas Thursday night
into Friday. There is still some uncertainty with the Friday
system and models are varied in strength and track of the low.
As a result, am putting moderate Gales across all waters. Seas
will also build with this system and will result in a 40-60%
probability for seas to build towards 19 to 21 ft. /42-Batz
&&
.BEACH HAZARDS...Large waves and hazardous surf conditions
through Wednesday afternoon, with breakers of 23 to 28 ft
expected.
Destructive waves may wash over beaches, jetties, and other
structures unexpectedly. People can be swept off rocks and jetties
and drown while observing high surf. Minor beach erosion may
damage coastal properties and buildings. Higher than normal water
run-up is expected on beaches and low-lying shoreline.
&&
.PQR WATCHES/WARNINGS/ADVISORIES...
OR...High Surf Advisory until 7 PM PST this evening for ORZ101>103.
Winter Weather Advisory until 10 AM PST this morning for
ORZ126>128.
WA...High Surf Advisory until 7 PM PST this evening for WAZ201.
Winter Weather Advisory until 10 AM PST this morning for WAZ211.
PZ...Gale Warning until 7 PM PST this evening for PZZ210-251>253-
271>273.
Hazardous Seas Warning from 7 PM this evening to 4 AM PST
Thursday for PZZ210-251>253-271>273.
&&
www.weather.gov/portland
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x.com/NWSPortlandThe national radar mosaic for the moment the first event began.
1 heavy rain. Local standard time, as filed.
Oregon Department of Transportation reported in a KG8 media web article that heavy rain was the likely reason for the sinking and cracking of State Route 6 near the Gales Creek Campground Turnout. The westbound lane was closed November 20th and 21st.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Oregon in 2024Every state in 2024This day in weather historyWarnings in Oregon, November 2024
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 1221959.