An incoming front brought high winds to a few locations along the southern Oregon coast.
Every event with a place to put it; 2 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 few locations along the southern Oregon coast.
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 Apr 11, 8:11 AM PST, 1 hour 50 minutes earlier.
Area Forecast Discussion
National Weather Service Medford OR
911 AM PDT Tue Apr 11 2017
.DISCUSSION...An update to the forecast is not necessary. The main
forecast concerns are gusty winds with a frontal system this
afternoon through tonight then lower snow levels with both a
wetter system late Wednesday into Wednesday night and a weak
trough on Thursday.
A surface low is offshore from northern California. It will not
be particularly deep but its track will take it north to northeast
through our coastal waters this evening. This close proximity to
the area will generate strong southerly winds with gusts to 60 MPH
possible at coastal headlands. Winds will also be strong with wind
advisories in effect in the Shasta Valley (except a high wind
warning near Weed), southern portion of the Rogue Valley, the
Shasta Valley, Lake County, and the Warner Mountains.
Precipitation will be mainly light today and tonight, though
moderate at times at the coast. The following system looks to
produce snowfall of less than advisory level amounts for much of
the higher terrain and east side with snow levels falling to
around 4500 feet with the majority of accumulation during
Wednesday evening. But, a possible exception is near Mount Shasta.
The highest amounts are expected there during the late afternoon
and evening of Wednesday. We will wait for the full suite of 12Z
model data to arrive before issuing any appropriate headline with
the afternoon package. -DW
In the long term...models are in fairly good agreement through
the forecast period. It will remain fairly active with the only
break in the action next Saturday into at least Sunday morning.
Not only will the pattern be active, but each storm is expected to
bring a cool air mass overhead, so we could be looking at
accumulating snow over the higher passes (Diamond Lake, Crater
Lake and possibly Lake of the Woods) and possibly in the vicinity
of Mount Shasta City. Snow could occur near and at Siskiyou
Summit, but with a strong April sun and warmer road temperatures,
they should remain wet most of the time during the day. However
could not rule out some road snow if heavier showers are in the
area during the night. This would be the case for Thursday night
and Sunday night. Keep in mind it's still a ways out there and
details could change from one day to the next, so stay tuned for
the latest updates. Right now it looks like the first half of next
weekend will be dry and milder. The models suggest the active
pattern will continue into the start of next week with a mean
trough remaining over the area and temperatures slightly below
normal. -Petrucelli
&&
.AVIATION...11/12Z TAF CYCLE...VFR will prevail this morning, though
isolated IFR ceilings are possible for a few hours near KRBG.
Ceilings will lower along the coast this morning with MVFR/local IFR
and periods of rain. Low pressure moving up the coast will bring
significant turbulence and low-level wind shear to KOTH 05-09z
before south-southwest winds surface thereafter. The lower
conditions will spread inland and likely obscure terrain at times.
Precipitation will be lighter and more showery inland with primarily
VFR, though conditions may occasionally lower to MVFR. Gusty south
winds will occur along the coast, Shasta Valley and over the east
side this afternoon and evening. -Spilde
&&
.MARINE...Updated 345 AM PDT Tuesday, 11 April 2017...Steep seas
will gradually subside to below 10 feet by mid morning. Rain will
accompany a warm front through the waters this morning into this
afternoon with a general east to northeast wind. Low pressure will
then strengthen and move north along the coast this evening and
overnight bringing a period of south gales and very steep seas.
Winds and seas should subside some by early Wednesday morning, but a
second front may bring an increase in south winds again Wednesday
afternoon and evening along with potentially very steep seas.
The weather will likely remain unsettled through Friday, followed by
a period of quieter conditions Saturday and Sunday. -Spilde
&&
.PREV DISCUSSION... /Issued 500 AM PDT Tue Apr 11 2017/
DISCUSSION...Winds continue to be expected to increase this
afternoon in the Shasta valley and the southern end of the Rogue
valley later this afternoon as winds increase ahead of the
approaching front. The MFR-RDD sfc pressure gradient increases to
-6 to -7 late this afternoon with 700 mb winds from the south-
southwest at 50 kt, supporting a high winds warning near Weed and
an advisory for the rest of the aforementioned areas. At this
time it does not look like the coast will see high wind warning
strength winds, but with the GFS and the NAM both showing the
surface low swinging close to the coast, although not as deep as
would normally be a concern, if the low is showing to be
significantly deeper than models are showing then winds could be a
good deal stronger than currently indicated. The next system in
line in the continuing many months long conveyor belt of wet
systems comes in Wednesday. This system will bring a colder air
mass with it, with 850 mb temps below freezing moving in Wednesday
evening. This will bring snow levels down to the Cascade passes,
and with the southerly flow increasing precip rates in the Mt
Shasta area, snow levels are expected to drop to Mount Shasta city
Thursday morning. However, the bulk of the front will be through
that area at that time and snow amounts are expected to only be
advisory amounts, and with road temperatures increasing daily with
the higher and higher sun angles, should melt quickly. Sven
&&
.MFR WATCHES/WARNINGS/ADVISORIES...
OR...Wind Advisory from 8 PM this evening to 8 AM PDT Wednesday for
ORZ031.
Wind Advisory from 5 PM this afternoon to 5 AM PDT Wednesday for
ORZ026.
CA...Wind Advisory from 8 PM this evening to 8 AM PDT Wednesday for
CAZ085.
Wind Advisory from 5 PM this afternoon to 5 AM PDT Wednesday for
CAZ081.
High Wind Warning from 5 PM this afternoon to 5 AM PDT Wednesday
for CAZ081.
Pacific Coastal Waters...Hazardous Seas Warning from 8 PM this evening to 3 AM PDT
Wednesday for PZZ350-356-370-376.
Small Craft Advisory from 3 AM to 11 AM PDT Wednesday for
PZZ356-376.
Hazardous Seas Watch from Wednesday morning through late
Wednesday night for PZZ350-356-370-376.
Gale Warning from 5 PM this afternoon to 3 AM PDT Wednesday for
PZZ356-376.
Small Craft Advisory for hazardous seas until 9 AM PDT this
morning for PZZ350-356-370-376.
Small Craft Advisory from 8 PM this evening to 11 AM PDT
Wednesday for PZZ350-370.
Gale Warning from 8 PM this evening to 3 AM PDT Wednesday for
PZZ350-370.
DW/JRS/MASThe national radar mosaic for the moment the first event began.
2 high wind. Local standard time, as filed.
The Long Prairie RAWS recorded a gust to 58 mph at 12/0013 PST. The Port Orford NOS/NWLON recorded a gust to 61 mph at 11/1906 PST, a gust to 62 mph at 11/1912 PST, and a gust to 63 mph at 11/2006 PST.
The Flynn Prairie RAWS recorded a gust to 58 mph at 11/2113 PST.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Oregon in 2017Every state in 2017This day in weather historyWarnings in Oregon, April 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: 679678, 679679.