An incoming front brought high wind to one location in south central Oregon.
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The episode as NWS MFR wrote it up.
An incoming front brought high wind to one location in south central Oregon.
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, 7:50 AM PST, 35 minutes earlier.
Area Forecast Discussion
National Weather Service Medford OR
850 AM PDT Mon Apr 11 2022
.SYNOPSIS...A strong front is moving onshore as heavy high impact
mountain snow continues. Blowing snow also remains an issue east
of the Cascades. High snowfall rates will continue through the
day. Gusty winds are expected across the whole area today. An
isolated thunderstorm west of the Cascades also can't be ruled out
this afternoon.
&&
.UPDATE...
Forecast remains on track this morning with snow falling to the
valley floors, yet struggling to stick below the snow level of
1700 feet. We would expect this to continue through the day even
with a little bit of daytime heating. There are breaks in between
the clouds, so the sun should get a little heat to the valley
floors, which in turn would limit snowfall accumulation.
Otherwise, we cancelled the wind warning along the coast and the
wind advisory over elevated terrain west of the Cascades as the
strongest winds have moved eastward. Breezy onshore winds will
still persist into the day as a cool unstable airmass moves into
the region. We'll evaluate the potential for more snow related
headlines continuing into the week today.
-Smith
&&
.DISCUSSION.../Issued 358 AM PDT Mon Apr 11 2022/
Road cameras in the Cascades and other mountainous areas show
whiteout conditions at exposed junctions, while others that are
more protected from the wind reveal accumulating snow on roadways.
Please read WSWMFR for all winter hazard related products.
Higher elevations along the coast are gusting above 50 mph, but as
of this writing lower elevations have yet to gust that high. We do
expect this though as the front moves onshore and for a short
period after frontal passage. This is expected in the next hour or
so. West winds will create gusty conditions across the remainder
of the region as well, but especially so in the coast range and
east of the Cascades. For more specifics please read NPWMFR.
Please refer to the previous two forecast discussions for any
further detail on the storm this morning and tonight. They outline
the meteorology well and discuss potential impacts from the
weather such as power outages from either wind or snow,The rest of
this discussion will focus on the next period of heaviest
snowfall.
The snow won't stop tonight, but it is expected to ease. And as it
does even colder air will move into the region. This opens
discussion to the possibility of snow down to west side valley
floors tonight into Tuesday morning, mainly the Illinois and
Rogue valley, including most or all of Grants Pass. Even the
eastern and southern parts of the Upqua Basin, like Glide and
Myrtle Creek could see light accumulations. Our forecast is
calling for less than half an inch in these locations. However
the big unknown is what the rain/snow mix in this afternoon's
showers do to prime the near surface environment. Even if snow
doesn't stick this afternoon, the air will be steadily cooling as
it melts the snow. So, the more of this that is occuring, the
more likely snow accumulations exceed the forecast of half an
inch. Unfortunately this is an unusual enough pattern for this
time of year, it is tough to have much confidence in what will
occur. Should signs point towards higher snowfall tonight, which
will likely look like more activity of showers, it is possible a
short notice advisory could be needed for west side valleys.
Then, as the trough moving through now stalls over the Idaho
panhandle, a second short wave will dig out of the Gulf of Alaska
and form its own surface low Tuesday afternoon. This will bring a
fresh source of moisture and energy to re-intensify snowfall
across the region. Again, north-south oriented mountain chains
will be the focus of the snowfall. From roughly 10 AM to 10 PM PDT
on Tuesday around another foot of snowfall in the Cascades and 6
to 10 inches in the coast range will be possible. Snow levels will
rise Tuesday afternoon from the valley floors to around 2000
feet, so while valley floors won't be impacted, most or all
mountain passes should expect increase snowfall accumulations. One
fortunate thing is that an organized front is not expected to
accompany this up tick in activity, so winds should remain on the
relatively lighter side, and thus limit the impact from reduced
visibilities in blowing snow.
Tuesday night the weather begins to ease again but, lingering
showers and snow levels down to the valley floors means that snow
for west side valleys is possible. However, compared to tonight,
Tuesday night should have less shower activity and thus a lower
chance for accumulations much above a tenth of an inch.
On Wednesday yet another surface low is expected to approach the
region, but this time from the west instead of northwest. This
could change the focus from SW Oregon to N. California. But, as
the previous discussion put it: The longevity of this troughy
pattern could be due to a blocking ridge upstream. That is to
say, most model solutions show our forecast area directly under or
within the influence of the right-side anchoring low of an omega
block. Models have a notoriously difficult time with blocking
patterns, thus adding even more uncertainty to what is already an
atypical scenario for our region.
-Miles
&&
.AVIATION...11/12Z TAFs...A strong cold front will bring a variety
of aviation hazards to the forecast area today. Strong winds,
lowering freezing levels to around 3000 ft MSL (continuing to lower
further through the day) and a mix of IFR and MVFR ceilings are
being observed. The front is crossing the Cascades this morning and
will bring snow to most terminals east of the Cascades. Mountain
obscuration will affect all higher terrain today into tonight.
Turbulence impacts will increase through the day. Last but not
least, thunderstorms are possible today from the Cascades westward
as a very unstable air mass develops over the area as the day
progresses. Keene
&&
.MARINE...Updated 800 AM PDT Monday, 11 April 2022...Northwest winds
will remain at or near gale force today with very steep and chaotic
seas. A very unstable air mass will support the possibility of
isolated thunderstorms and hail into this evening. Seas are expected
to peak this evening, but gusty winds and very steep seas will last
through Tuesday. Active weather is expected through the week, and
Small Craft Advisory conditions are expected from late Tuesday
through Wednesday, if not longer. -Keene/BPN
&&
.MFR WATCHES/WARNINGS/ADVISORIES...
OR...High Wind Warning until 11 PM PDT this evening for ORZ030-031.
Winter Weather Advisory until 5 PM PDT this afternoon for
ORZ029-030.
Wind Advisory until 11 PM PDT this evening for ORZ029>031.
Winter Weather Advisory until 11 PM PDT this evening above 2500
feet in the for ORZ023.
Winter Storm Warning until 11 PM PDT this evening above 2500
feet in the for ORZ024-026.
Winter Storm Warning until 11 AM PDT Tuesday for ORZ025.
Winter Storm Warning until 11 AM PDT Tuesday for ORZ027.
Winter Weather Advisory until 11 PM PDT this evening for ORZ028.
CA...High Wind Warning until 11 PM PDT this evening for CAZ085.
Wind Advisory until 11 PM PDT this evening for CAZ084-085.
Winter Storm Warning until 11 PM PDT this evening above 2500
feet in the for CAZ080.
Winter Weather Advisory until 11 PM PDT this evening for
CAZ083-084.
Pacific Coastal Waters...Gale Warning until 5 PM PDT this afternoon for
PZZ350-356-370-376.
Hazardous Seas Warning from 5 PM this afternoon to 5 PM PDT
Tuesday for PZZ350-356-370-376.PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEDFORD OR
527 AM PDT MON APR 11 2022
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0527 AM HEAVY RAIN GOLD BEACH 42.41N 124.42W
04/11/2022 M1.44 INCH CURRY OR TRAINED SPOTTER
24 HR TOTAL AS OF 5:30 AM PDT. STATION
ELEVATION: 49 FT.
&&
MCBPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEDFORD OR
715 AM PDT MON APR 11 2022
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0714 AM SNOW 1 W CRESCENT 43.46N 121.71W
04/11/2022 M9.2 INCH KLAMATH OR TRAINED SPOTTER
SNOW TOTAL SINCE START OF STORM. 0.44 IN
LIQUID EQUIVALENT.
&&
CZSThe national radar mosaic for the moment the first event began.
1 high wind. Local standard time, as filed.
The ODOT sensor on Oregon Highway 140 at Adel recorded a gust to 58 mph at 11/0829 PST.
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, April 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: 1007540.