A strong cold front pushed through the region during the afternoon on November 4th into the morning hours of November 5th accompanied by a strong low level jet and tight surface pressure gradient. The strongest winds occurred late on the evening of November 4th and on the early morning of November 5th.
Every event with a place to put it; 6 filed by county or forecast zone are drawn at its center, in a lighter ring. 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 PDT wrote it up.
A strong cold front pushed through the region during the afternoon on November 4th into the morning hours of November 5th accompanied by a strong low level jet and tight surface pressure gradient. The strongest winds occurred late on the evening of November 4th and on the early morning of November 5th.
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 Pendleton, OR wrote its last area forecast discussion before the first event at Nov 4, 3:17 AM PST, 2 hours 43 minutes earlier.
Area Forecast Discussion
National Weather Service Pendleton OR
417 AM PDT Fri Nov 4 2022
.Updated for Aviation...
SHORT TERM... Today through Saturday night...Multiple weather
concerns are anticipated for the next 36 hours, as Washington and
Oregon are under an strong westerly flow and an atmospheric river
(AR) that extends as far as the International Dateline. Winds are
one of the primary concerns, and High Wind Warnings and Wind
Advisories will be issued for the morning package. A strong cold
front will be accompanied by a 75kt jet at 850mb and a surface
gradient as tight as 14mb from PDX-GEG. Most of the forecast area
will be under a warning or advisory beginning this afternoon
through 7 AM Saturday. Models are in agreement that winds will
quickly shut off Saturday morning after 15Z for many areas, but it
will be locally windy.
The AR has an integrated vapor transport (IVT) as high as 1200
kg/m/s aimed directly over WA state, and the AR will sag southward
towards the WA/OR border later today ahead of the cold front. For
the next 24 hours, QPF amounts of 3-5 inches are forecast for the
WA/OR Cascades and the northern Blue mountains. A Hydrologic
Outlook statement was issued to highlight the sharp rises of
rivers and streams, and there will be additional wording of the
Outlook to alert of debris flows along recent burn scars such as
Schneider Springs, Green Ridge, Sturgill, Nebo, and Double Creek.
Snow levels will climb significantly today, but snow is heavy at
this time. A Winter Weather Advisory is in effect for the northern
Blue Mountains and Wallowa above 3000 feet until 11 AM this
morning. Heavy snow will fall for the next several hours before
changing to rain, so the winter advisory looks good. ODOT shows
about 1-3 inches of new snow have fallen in the Blue Mtns
overnight. The concerns will quickly change from snow to heavy
rain ahead of the cold frontal passage.
The cold frontal passage tonight will lower snow levels from
around 7500 feet this evening to 3000 feet over south central WA
and 5500-6500 feet over southeast WA and northeast OR by 12Z
Saturday. By 18Z Saturday, snow levels will range from 2500 feet
north to 4000 feet south. Drier air behind the front will taper
off or end precipitation on Saturday. There will continued to be
orographic showers over the mountains in a strong WNW flow aloft
Saturday through Saturday night. At this time, no winter
highlights are anticipated although there will be around 3-6
inches of snow for a large area of the Cascade east slopes and the
eastern mountains. Locally higher amounts are expected at the
higher peaks. If QPF and snow amounts are more than forecast for
Saturday and Saturday night, winter highlights may be in order.
Wister/85
LONG TERM...
Sunday through Thursday ...An upper level low off the British
Columbia coast will drop south through Tuesday and carve out a
large trough that will move onshore Tuesday night. There are some
model differences as to how far south the low gets, with the GFS
bringing the low further south over California and being slower
moving it northeastward... but the main impact from this trough as
it moves eastward through midweek will be unseasonably cold
temperatures. Temperatures will be 15 to 25 degrees below normal on
Tuesday and Wednesday, which look to be the coldest days. Due to the
discrepancies in the model solutions, there are some differences in
the temperatures, with the ECMWF and NBM being a bit warmer than the
GFS.
Sunday looks to see some decent precipitation chances, then after
that it looks to be mainly dry in most locations, with some light
snow focused on the mountains. With the trough moving across the
region through midweek and the cold air aloft (and at the surface)
there will be enough instability around for abundant clouds and snow
showers almost anywhere at anytime. But overall precip chances at
any given time are low and any amounts outside of the higher
elevations will be light. Some of the precip chances will be
dependent on the ultimate track of the low. By Thursday, ridging
will build back over the area.
As far as temperatures go...the ECMWF EFI shows values for high
temperatures on Monday in the -0.7 to -0.8 mainly west of the
Cascades, but starting to move over the western portions of our
region. By Tuesday, most of our area, except for the eastern
sections is has values of -0.6 to -0.7 with the western sections -
0.7 to -0.8. On Wednesday, our whole area is -0.7 to -0.8, with
some locations -.08 to -0.9 and portions of north-central Washington
-0.9 to -0.95 for high temperatures. Low temperatures are not as
anomalous...mainly in the -0.7 to -0.8 range.
Taking a look at the ensemble clusters, they are more supportive
overall of the ECMWF low placement and timing. The cluster phase
space analysis shows better clustering on days 3 and 4, though not
as much later on.
High temperatures on Sunday, will mainly be in the 40s, with highs
near 50 in the Basin. Highs on Monday will be mainly in the lower
40s...then the bottom drops out! Highs on Tuesday will not get
above 30 in some areas and not out of the 30 in most. Wednesday
will be similar, though possibly a degree or two warmer in some
locations and cooler in others. Overnight lows will be in the 20s
Monday night then in the teens and 20s Tuesday night and Wednesday
night.
AVIATION...
12Z TAFS...Abundant moisture and strong wind will impact the TAF
sites from a weather system moving across the area through
Saturday.
Most locations should remain VFR, local MVFR conditions can not be
ruled out in any heavier RA. However, the most likely sites to
have extended MVFR would be ALW and DLS.
Beyond that, the major concern is very strong wind, which will
increase later this morning/early afternoon then peak during the
overnight to early morning Saturday hours before slowly subsiding
(but remaining elevated) on Saturday. Wind gusts of 50 kts are
forecast and wind gusts of greater than 50 kts can not be ruled
out. Additionally, LLWS is in the forecast mainly for about the
first half of the period as the winds ramp up.
&&
.PRELIMINARY POINT TEMPS/POPS...
PDT 58 38 50 31 / 70 70 30 20
ALW 58 40 51 33 / 80 70 40 30
PSC 62 46 55 39 / 50 60 10 20
YKM 59 37 52 27 / 80 70 20 40
HRI 62 43 53 36 / 40 60 20 20
ELN 54 34 47 27 / 90 80 30 50
RDM 55 36 47 25 / 50 90 50 20
LGD 46 34 44 25 / 100 100 60 30
GCD 50 36 48 25 / 90 80 60 20
DLS 64 45 53 36 / 90 100 40 60
&&
.PDT WATCHES/WARNINGS/ADVISORIES...
OR...Wind Advisory from 2 PM this afternoon to 7 AM PDT Saturday for
ORZ041-505-511.
High Wind Warning from 2 PM this afternoon to 7 AM PDT Saturday
for ORZ044-507-508-510.
Winter Weather Advisory until 11 AM PDT this morning for ORZ049-
050-502-503.
High Wind Warning from 10 AM this morning to 7 AM PDT Saturday
for ORZ509.
WA...Wind Advisory from 2 PM this afternoon to 7 AM PDT Saturday for
WAZ024-026-027.
High Wind Warning from 2 PM this afternoon to 7 AM PDT Saturday
for WAZ028>030.
Winter Weather Advisory until 11 AM PDT this morning for WAZ030.
High Wind Warning from 10 AM this morning to 7 AM PDT Saturday
for WAZ521.
&&
SHORT TERM...85
LONG TERM....77
AVIATION...77The national radar mosaic for the moment the first event began.
6 high wind. Local standard time, as filed.
The mesonet station ODT55 measured a gust of 73 mph at 0742PDT November 4th and the mesonet station ODT02 measured a gust of 60mph at 1446PDT November 4th.
The Mesonet station ODT43 measured a gust of 67mph at 1421PDT November 4th and Mesonet station PAOF3 measured a gust of 58mph at 1648PDT November 4th.
The mesonet station ODT17 measured a gust of 62mph at 0221PDT on November 5th.
The ASOS KPDT measured a gust of 77 mph at 0011PDT on November 5th and the mesonet site EW7176 measured a gust of 67 mph at 0030PDT on November 5th.
The Mesonet station DW1028 measured a gust of 72mph at 1715PDT on November 4th and the Mesonet station CW5615 measure a gust of 59mph at 0031PDT on November 5th.
The mesonet station ODT44 measured a gust of 63mph at 2351PDT November 4th, and the ASOS KHRI measure a gust of 60mph at 0024PDT November 5th.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Oregon in 2022Every state in 2022This day in weather historyWarnings in Oregon, November 2022
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: 1066808, 1066807, 1066809, 1066724, 1066725, 1066810.