An incoming front brought high winds to a number of locations in northeast California.
Every event with a place to put it; 1 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 MFR wrote it up.
An incoming front brought high winds to a number of locations in northeast California.
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 Medford, OR wrote its last area forecast discussion before the first event at Nov 26, 3:53 AM PST, 2 hours 11 minutes earlier.
Area Forecast Discussion
National Weather Service Medford OR
353 AM PST Sun Nov 26 2017
.SHORT TERM...A surface low has tracked north along the Pacific
Northwest coast. Satellite imagery shows this low located off
British Columbia with a trailing cold front extending down along
the coast of Washington and Oregon. The main impacts with this
strong will be gusty winds over the area with locally strong winds
and rain developing today as this front moves inland.
Strong gusty winds have developed ahead of this front as the
surface pressure gradient has increased over the area. South winds
are gusting to are currently gusting to around 40 to 60 mph in
the southern Shasta Valley, in the Summer Lake area and over some
higher mountains. Areas along the coast are seeing gusts of 30 mph
with up to 60 mph at higher elevations over headlands. In the
Rogue Valley, winds have increased from south Medford to Ashland
with gusts of around 30 mph. Winds are expected to increase
further and peak early morning for areas west of the Cascades.
East of the Cascades expect winds to peak late this morning into
this afternoon. Please refer to NPWMFR or your local point and
click forecasts for the specifics regarding the locally strong
winds expected today.
Light to moderate rain is expected across the area today with
locally heavy rain in Curry county and south-central and
western Siskiyou county. Snow levels will remain elevated this
morning lowering to around 6500 feet in the Cascades and 5000
feet west of the Cascades late this afternoon, then lowering to
4000 to 5000 ft this evening into tonight. As snow levels lower
another low pressure system is expected to track into southern
portions of the area.
Behind the front, an upper trough will into the region and a low
pressure system will move around the trough and approach the
northern California and southern Oregon coast. Models show
agreement with this low approaching the coast late this evening
and moving inland early Monday morning. However there remains
variability on how far south the low will track. The GFS and NAM
continue to show a more southerly track with the low approaching
the Northern California coast, with the upper low moving inland
just north of the San Francisco Bay area. Meanwhile the ECMWF has
been consistent for at least the last 5 runs showing the low
approaching coast near the Oregon-California border tonight and
moving inland over northern California Monday morning. The SREF
also shows a more northerly track, although not as far north as
the ECMWF. The main impact of a more northerly track would be
light precipitation over the area tonight into Monday morning.
This combined with lowering snow levels down to 3500-4500 feet
Monday morning would support some snow, around 1-3 inches over
higher passes, in the Cascades and Siskiyous as well as over the
mountains in Siskiyou County. However, the more southerly track
would result in little precipitation over the area tonight into
MOnday morning, with mainly just light precipitation in Northern
California and from the Cascades east in Southern Oregon. Have
gone with a blend of the ECMWF/SREF with the GFS solutions. Will
need to continue to monitor the model forecasts and satellite
imagery as this low tracks towards the region.
A weak high pressure ridge builds into the region briefly late Monday
afternoon and night. Then a front and upper trough will move into
the area from the northwest and bring light precipitation on
Tuesday. Another period of dry weather follows Wednesday into
Thursday as high pressure returns. Areas of valley fog are likely
during the overnight and morning periods under high pressure.
&&
.AVIATION...26/12TAF CYCLE...VFR conditions prevail for most areas,
with MVFR conditions along the coast south of Cape Blanco. Strong,
gusty southerly winds are present along the coast, over the ridges, and
east of the Cascades. Even inland valleys west of the Cascades are
seeing gusty winds, especially the Shasta Valley and the southern end
of the Rogue Valley. These strong gusty winds are resulting in mountain
wave turbulence and LLWS along the coast and inland valleys (including
KMFR and KRBG) that will likely persist through late morning. Winds
will shift to westerly this afternoon after frontal passage west of the
Cascades and remain gusty east of the Cascades through this evening.
Cigs will lower to MVFR with the frontal passage later this morning
with local IFR cigs/vsbys expected in heavier rain and showers. Expect
terrain obscurations with frontal passage and lingering behind the
front as well. /BR-y
&&
.MARINE...Updated 200 AM PST Sunday 26 Nov 2017...High-end south
gales and very steep, hazardous seas will continue into this morning
with seas peaking early this morning. The combination of west swell and
a fresh southwest swell behind the front will continue high and steep
seas through Monday evening. A brief break from high seas is expected
overnight Monday into early Tuesday morning. However, swell dominated
seas are likely to rise rapidly late Tuesday with a high to very high
long period west swell expected through Wednesday. /BR-y
&&
.MFR WATCHES/WARNINGS/ADVISORIES...
OR...High Wind Warning until 1 PM PST this afternoon for ORZ030-031.
Wind Advisory until 1 PM PST this afternoon for ORZ029>031.
Wind Advisory until 8 AM PST this morning for ORZ026.
CA...High Wind Warning until 1 PM PST this afternoon for CAZ085.
Wind Advisory until 1 PM PST this afternoon for CAZ084-085.
High Wind Warning until 11 AM PST this morning for CAZ081.
Wind Advisory until 11 AM PST this morning for CAZ081.
Pacific Coastal Waters...Small Craft Advisory for hazardous seas from 10 AM this morning
to 10 PM PST Monday for PZZ350-356-370-376.
Gale Warning until 10 AM PST this morning for
PZZ350-356-370-376.
Hazardous Seas Warning until 10 AM PST this morning for
PZZ350-356.
Small Craft Advisory from 10 AM this morning to 4 PM PST this
afternoon for PZZ370-376.
CCThe national radar mosaic for the moment the first event began.
1 high wind. Local standard time, as filed.
The Rush Creek RAWS recorded a gust to 61 mph at 26/1103 PST and a gust to 59 mph at 26/1203 PST. The Timber Mountain RAWS recorded a gust to 60 mph at 26/0703 PST.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in California in 2017Every state in 2017This day in weather historyWarnings in California, November 2017
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: 723088.