High Wind Warning 9, NWS Medford, OR

358 
WWUS76 KMFR 230314
NPWMFR

URGENT - WEATHER MESSAGE
National Weather Service Medford OR
714 PM PST Sun Dec 22 2024

CAZ081-231515-
/O.EXP.KMFR.WI.Y.0036.000000T0000Z-241223T0300Z/
/O.CON.KMFR.HW.W.0009.241223T2100Z-241224T0900Z/
Central Siskiyou County-
Including the cities of Weed
714 PM PST Sun Dec 22 2024

...HIGH WIND WARNING REMAINS IN EFFECT FROM 1 PM MONDAY TO 1 AM PST 
TUESDAY...

* WHAT...South winds 30 to 40 mph with gusts up to 60 mph expected.

* WHERE...The Shasta Valley, including I-5 and the cities of Weed, 
  Gazelle, Grenada, and Montague. Strongest winds are expected from 
  Grenada south to Weed, including I-5.

* WHEN...From 1 PM Monday to 1 AM PST Tuesday.

* IMPACTS...For the Wind Advisory, gusty winds could blow around 
  loose objects. Tree limbs could be blown down and a few power 
  outages may result. For the High Wind Warning, damaging winds 
  could blow down trees and power lines. Widespread power outages 
  are possible. Travel could be very difficult, especially for high 
  profile vehicles.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Winds this strong can make driving difficult, especially for high 
profile vehicles. Use extra caution.

Fasten loose objects or shelter objects in a safe location prior to 
the onset of winds.

&&

$$

ORZ026-231515-
/O.CON.KMFR.WI.Y.0037.241223T2100Z-241224T0400Z/
Jackson County-
Including the cities of Ashland and Medford
714 PM PST Sun Dec 22 2024

...WIND ADVISORY REMAINS IN EFFECT FROM 1 PM TO 8 PM PST MONDAY...

* WHAT...Southeast winds 20 to 30 mph with gusts up to 50 mph 
  expected.

* WHERE...Southern Rogue Valley, including the city of Ashland, 
  Talent and Phoenix.

* WHEN...From 1 PM to 8 PM PST Monday.

* IMPACTS...Gusty winds will blow around unsecured objects. Tree 
  limbs could be blown down and a few power outages may result.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Winds this strong can make driving difficult, especially for high 
profile vehicles. Use extra caution.

&&

$$

CAZ085-ORZ030-031-231515-
/O.CON.KMFR.WI.Y.0037.241224T0300Z-241224T1200Z/
Modoc County-Northern and Eastern Klamath County and Western Lake
County-Central and Eastern Lake County-
714 PM PST Sun Dec 22 2024

...WIND ADVISORY REMAINS IN EFFECT FROM 7 PM MONDAY TO 4 AM PST 
TUESDAY...

* WHAT...South winds 20 to 30 mph with gusts up to 55 mph expected.

* WHERE...This includes the Summer Lake area and the mountains 
  across Lake County and eastern Klamath County, and Modoc County.

* WHEN...From 7 PM Monday to 4 AM PST Tuesday.

* IMPACTS...Gusty winds will blow around unsecured objects. Tree 
  limbs could be blown down and a few power outages may result.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Winds this strong can make driving difficult, especially for high 
profile vehicles. Use extra caution.

&&

$$

TD

748 
WWUS76 KMFR 230952
NPWMFR

URGENT - WEATHER MESSAGE
National Weather Service Medford OR
152 AM PST Mon Dec 23 2024

CAZ081-231800-
/O.CON.KMFR.HW.W.0009.241223T2100Z-241224T0900Z/
Central Siskiyou County-
Including the cities of Weed
152 AM PST Mon Dec 23 2024

...HIGH WIND WARNING REMAINS IN EFFECT FROM 1 PM THIS AFTERNOON TO 1 
AM PST TUESDAY...

* WHAT...South winds 30 to 40 mph with gusts up to 60 mph expected.

* WHERE...The Shasta Valley, including I-5 and the cities of Weed, 
  Gazelle, Grenada, and Montague. Strongest winds are expected from 
  Grenada south to Weed, including I-5.

* WHEN...From 1 PM this afternoon to 1 AM PST Tuesday.

* IMPACTS...Damaging winds will blow down trees and power lines. 
  Widespread power outages are expected. Travel will be difficult, 
  especially for high profile vehicles.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Winds this strong can make driving difficult, especially for high 
profile vehicles. Use extra caution.

Fasten loose objects or shelter objects in a safe location prior to 
the onset of winds.

&&

$$

ORZ026-231800-
/O.NEW.KMFR.FG.Y.0012.241223T0952Z-241223T1800Z/
/O.CON.KMFR.WI.Y.0037.241223T2100Z-241224T0400Z/
Jackson County-
Including the cities of Ashland, Medford, Applegate, Gold Hill,
Shady Cove, Jacksonville, and Rogue River
152 AM PST Mon Dec 23 2024

...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM PST THIS MORNING...
...WIND ADVISORY REMAINS IN EFFECT FROM 1 PM THIS AFTERNOON TO 8 PM 
PST THIS EVENING...

* WHAT...For the Dense Fog Advisory, visibility one quarter mile or 
  less in dense fog. For the Wind Advisory, southeast winds 20 to 30 
  mph with gusts up to 50 mph expected.

* WHERE...For the Dense Fog Advisory, Rogue and Applegate valleys, 
  including Phoenix, Medford, White City, Central Point, Rogue 
  River, Jacksonville, Ruch and Applegate. For the Wind Advisory, 
  southern Rogue Valley, including the city of Ashland, Talent and 
  Phoenix.

* WHEN...For the Dense Fog Advisory, until 10 AM PST this morning. 
  For the Wind Advisory, from 1 PM this afternoon to 8 PM PST this 
  evening.

* IMPACTS...Low visibility could make driving conditions hazardous 
  this morning. Gusty winds will blow around unsecured objects this 
  afternoon and evening. Tree limbs could be blown down and a few 
  power outages may result.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If driving, slow down, use your headlights, and leave plenty of 
distance ahead of you.

Winds this strong can make driving difficult, especially for high 
profile vehicles. Use extra caution.

&&

$$

ORZ023-024-231800-
/O.NEW.KMFR.FG.Y.0012.241223T0952Z-241223T1800Z/
Central Douglas County-Eastern Curry County and Josephine County-
Including the cities of Canyonville, Green, Cave Junction,
Sutherlin, Umpqua, Roseburg, Drain, Elkton, Wilderville,
Winchester, Myrtle Creek, Grants Pass, and Merlin
152 AM PST Mon Dec 23 2024

...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM PST THIS MORNING...

* WHAT...Visibility one quarter mile or less in dense fog.

* WHERE...Central Douglas County and Eastern Curry County and 
  Josephine County, including I-5, Highways 199, 138, 38 and 42 as 
  well as the cities of Grants Pass, Cave Junction, Canyonville, 
  Roseburg, Sutherlin and Elkton.

* WHEN...Until 10 AM PST this morning.

* IMPACTS...Low visibility could make driving conditions hazardous. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If driving, slow down, use your headlights, and leave plenty of 
distance ahead of you.

&&

$$

CAZ085-ORZ030-031-231800-
/O.CON.KMFR.WI.Y.0037.241224T0300Z-241224T1200Z/
Modoc County-Northern and Eastern Klamath County and Western Lake
County-Central and Eastern Lake County-
152 AM PST Mon Dec 23 2024

...WIND ADVISORY REMAINS IN EFFECT FROM 7 PM THIS EVENING TO 4 AM 
PST TUESDAY...

* WHAT...South winds 25 to 35 mph with gusts up to 55 mph expected.

* WHERE...This includes the Summer Lake area and the mountains 
  across Lake County and eastern Klamath County, and Modoc County.

* WHEN...From 7 PM this evening to 4 AM PST Tuesday.

* IMPACTS...Gusty winds will blow around unsecured objects. Tree 
  limbs could be blown down and a few power outages may result.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Winds this strong can make driving difficult, especially for high 
profile vehicles. Use extra caution.

&&

$$

MAS

997 
WWUS76 KMFR 231747
NPWMFR

URGENT - WEATHER MESSAGE
National Weather Service Medford OR
947 AM PST Mon Dec 23 2024

ORZ026-240115-
/O.EXP.KMFR.FG.Y.0012.000000T0000Z-241223T1800Z/
/O.CON.KMFR.WI.Y.0037.241223T2100Z-241224T0400Z/
Jackson County-
Including the cities of Shady Cove, Rogue River, Jacksonville,
Gold Hill, Medford, Ashland, and Applegate
947 AM PST Mon Dec 23 2024

...WIND ADVISORY REMAINS IN EFFECT FROM 1 PM THIS AFTERNOON TO 8 PM 
PST THIS EVENING...
...DENSE FOG ADVISORY WILL EXPIRE AT 10 AM PST THIS MORNING...

* WHAT...Dense fog advisory will expire 10 AM. Southeast winds 20 to 
  30 mph with gusts up to 50 mph expected.

* WHERE...For the Wind Advisory, southern Rogue Valley, including 
  the city of Ashland, Talent and Phoenix.

* WHEN...From 1 PM this afternoon to 8 PM PST this evening.

* IMPACTS...Gusty winds will blow around unsecured objects this 
  afternoon and evening. Tree limbs could be blown down and a few 
  power outages may result.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Winds this strong can make driving difficult, especially for high 
profile vehicles. Use extra caution.

&&

$$

ORZ023-024-231900-
/O.EXP.KMFR.FG.Y.0012.000000T0000Z-241223T1800Z/
Central Douglas County-Eastern Curry County and Josephine County-
Including the cities of Wilderville, Grants Pass, Sutherlin,
Umpqua, Myrtle Creek, Merlin, Green, Roseburg, Winchester, Cave
Junction, Drain, Elkton, and Canyonville
947 AM PST Mon Dec 23 2024

...DENSE FOG ADVISORY WILL EXPIRE AT 10 AM PST THIS MORNING...

The threat has ended.

$$

CAZ081-240115-
/O.CON.KMFR.HW.W.0009.241223T2100Z-241224T0900Z/
Central Siskiyou County-
Including the cities of Weed
947 AM PST Mon Dec 23 2024

...HIGH WIND WARNING REMAINS IN EFFECT FROM 1 PM THIS AFTERNOON TO 1 
AM PST TUESDAY...

* WHAT...South winds 30 to 40 mph with gusts up to 60 mph expected.

* WHERE...The Shasta Valley, including I-5 and the cities of Weed, 
  Gazelle, Grenada, and Montague. Strongest winds are expected from 
  Grenada south to Weed, including I-5.

* WHEN...From 1 PM this afternoon to 1 AM PST Tuesday.

* IMPACTS...For the Wind Advisory, gusty winds could blow around 
  loose objects. Tree limbs could be blown down and a few power 
  outages may result. For the High Wind Warning, damaging winds 
  could blow down trees and power lines. Widespread power outages 
  are possible. Travel could be very difficult, especially for high 
  profile vehicles.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Winds this strong can make driving difficult, especially for high 
profile vehicles. Use extra caution.

Fasten loose objects or shelter objects in a safe location prior to 
the onset of winds.

&&

$$

CAZ085-ORZ030-031-240115-
/O.CON.KMFR.WI.Y.0037.241224T0300Z-241224T1200Z/
Modoc County-Northern and Eastern Klamath County and Western Lake
County-Central and Eastern Lake County-
947 AM PST Mon Dec 23 2024

...WIND ADVISORY REMAINS IN EFFECT FROM 7 PM THIS EVENING TO 4 AM 
PST TUESDAY...

* WHAT...South winds 25 to 35 mph with gusts up to 55 mph expected.

* WHERE...This includes the Summer Lake area and the mountains 
  across Lake County and eastern Klamath County, and Modoc County.

* WHEN...From 7 PM this evening to 4 AM PST Tuesday.

* IMPACTS...Gusty winds will blow around unsecured objects. Tree 
  limbs could be blown down and a few power outages may result.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Winds this strong can make driving difficult, especially for high 
profile vehicles. Use extra caution.

&&

$$

Guerrero

208 
WWUS76 KMFR 232211
NPWMFR

URGENT - WEATHER MESSAGE
National Weather Service Medford OR
211 PM PST Mon Dec 23 2024

CAZ081-240800-
/O.CON.KMFR.HW.W.0009.000000T0000Z-241224T0900Z/
Central Siskiyou County-
Including the cities of Weed
211 PM PST Mon Dec 23 2024

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 1 AM PST TUESDAY...

* WHAT...South winds 30 to 40 mph with gusts up to 60 mph.

* WHERE...The Shasta Valley, including I-5 and the cities of Weed, 
  Gazelle, Grenada, and Montague. Strongest winds are expected from 
  Grenada south to Weed, including I-5.

* WHEN...Until 1 AM PST Tuesday.

* IMPACTS...Damaging winds will blow down trees and power lines. 
  Widespread power outages are expected. Travel will be difficult, 
  especially for high profile vehicles.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Winds this strong can make driving difficult, especially for high 
profile vehicles. Use extra caution.

Fasten loose objects or shelter objects in a safe location prior to 
the onset of winds.

&&

$$

ORZ026-240400-
/O.CON.KMFR.WI.Y.0037.000000T0000Z-241224T0400Z/
Jackson County-
Including the cities of Medford and Ashland
211 PM PST Mon Dec 23 2024

...WIND ADVISORY REMAINS IN EFFECT UNTIL 8 PM PST THIS EVENING...

* WHAT...Southeast winds 20 to 30 mph with gusts up to 50 mph 
  expected.

* WHERE...For the Wind Advisory, southern Rogue Valley, including 
  the city of Ashland, Talent and Phoenix.

* WHEN...Until 8 PM PST this evening.

* IMPACTS...Gusty winds will blow around unsecured objects this 
  afternoon and evening. Tree limbs could be blown down and a few 
  power outages may result.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Winds this strong can make driving difficult, especially for high 
profile vehicles. Use extra caution.

&&

$$

CAZ085-ORZ030-031-240800-
/O.CON.KMFR.WI.Y.0037.241224T0300Z-241224T1200Z/
Modoc County-Northern and Eastern Klamath County and Western Lake
County-Central and Eastern Lake County-
211 PM PST Mon Dec 23 2024

...WIND ADVISORY REMAINS IN EFFECT FROM 7 PM THIS EVENING TO 4 AM 
PST TUESDAY...

* WHAT...South winds 25 to 35 mph with gusts up to 55 mph expected.

* WHERE...This includes the Summer Lake area and the mountains 
  across Lake County and eastern Klamath County, and Modoc County.

* WHEN...From 7 PM this evening to 4 AM PST Tuesday.

* IMPACTS...Gusty winds will blow around unsecured objects. Tree 
  limbs could be blown down and a few power outages may result.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Winds this strong can make driving difficult, especially for high 
profile vehicles. Use extra caution.

&&

$$

BMS

043 
WWUS76 KMFR 240704
NPWMFR

URGENT - WEATHER MESSAGE
National Weather Service Medford OR
1104 PM PST Mon Dec 23 2024

CAZ081-240900-
/O.CON.KMFR.HW.W.0009.000000T0000Z-241224T0900Z/
Central Siskiyou County-
Including the cities of Weed
1104 PM PST Mon Dec 23 2024

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 1 AM PST TUESDAY...

* WHAT...South to southeast winds 30 to 40 mph with gusts up to 60 
  mph.

* WHERE...The Shasta Valley, including I-5 and the cities of Weed, 
  Gazelle, Grenada, and Montague. Strongest winds are expected from 
  Grenada south to Weed, including I-5.

* WHEN...Until 1 AM PST Tuesday.

* IMPACTS...For the High Wind Warning, damaging winds could blow 
  down trees and power lines. Widespread power outages are possible. 
  Travel could be very difficult, especially for high profile 
  vehicles.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Winds this strong can make driving difficult, especially for high 
profile vehicles. Use extra caution.

Fasten loose objects or shelter objects in a safe location prior to 
the onset of winds.

&&

$$

CAZ085-ORZ030-031-241200-
/O.CON.KMFR.WI.Y.0037.000000T0000Z-241224T1200Z/
Modoc County-Northern and Eastern Klamath County and Western Lake
County-Central and Eastern Lake County-
1104 PM PST Mon Dec 23 2024

...WIND ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST TUESDAY...

* WHAT...South to southwest winds 25 to 35 mph with gusts up to 55 
  mph.

* WHERE...This includes the Summer Lake area, the mountains across 
  Lake County and eastern Klamath County, and Modoc County.

* WHEN...Until 4 AM PST Tuesday.

* IMPACTS...Gusty winds will blow around unsecured objects. Tree 
  limbs could be blown down and a few power outages may result.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Winds this strong can make driving difficult, especially for high 
profile vehicles. Use extra caution.

&&

$$

DW

352 
WWUS76 KMFR 240839
NPWMFR

URGENT - WEATHER MESSAGE
National Weather Service Medford OR
1239 AM PST Tue Dec 24 2024

CAZ081-240945-
/O.EXP.KMFR.HW.W.0009.000000T0000Z-241224T0900Z/
Central Siskiyou County-
Including the cities of Weed
1239 AM PST Tue Dec 24 2024

...HIGH WIND WARNING WILL EXPIRE AT 1 AM PST EARLY THIS MORNING...

Winds have eased below warning criteria for this event. 

$$

CAZ085-ORZ030-031-241200-
/O.CON.KMFR.WI.Y.0037.000000T0000Z-241224T1200Z/
Modoc County-Northern and Eastern Klamath County and Western Lake
County-Central and Eastern Lake County-
1239 AM PST Tue Dec 24 2024

...WIND ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST EARLY THIS 
MORNING...

* WHAT...South to southwest winds 25 to 35 mph with gusts up to 55 
  mph.

* WHERE...This includes the Summer Lake area, the mountains across 
  Lake County and eastern Klamath County, and Modoc County.

* WHEN...Until 4 AM PST early this morning.

* IMPACTS...Gusty winds will blow around unsecured objects. Tree 
  limbs could be blown down and a few power outages may result.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Winds this strong can make driving difficult, especially for high 
profile vehicles. Use extra caution.

&&

$$

BR-y

Area Forecast Discussion
National Weather Service Medford OR
837 AM PST Sun Dec 22 2024

.DISCUSSION...Models remain on track with a front moving inland
today. Snow levels will rise (to 6000-7000 ft) ahead of this
front this morning and this afternoon with most areas seeing rain
as this front moves through. Some light rain has fallen across
Coos and Douglas. Rain will increase along the coast and in the
Mount Shasta area late this morning, then spread inland across the
area this afternoon. Some windy conditions will develop across the
area with strongest winds over the mountains. Additionally, advisory
level winds (see the NPWMFR) are expected in the Shasta Valley
and southern Rogue Valley. South winds have increased overnight
and this morning to 20 mph and gusts of 35 mph in the Weed area
and are expected to peak today with gusts of around 40 to 55 mph.
In the southern Rogue valley, gusty south winds will develop later
this morning and this afternoon with gusts to 45 mph are
expected. These winds will lower behind the front later this
evening. With the front, thunderstorms may also be a concern
across the marine waters and along the coast. Observations show
lightning mainly just south of the area off the coast of northern
California. Models support a 10-20% chance for thunderstorms in
coastal waters off southern Oregon and along the southern Oregon
coast today.

&&

.AVIATION...22/12Z TAFS...Mainly VFR conditions prevail this
morning, though there are some areas of low clouds resulting in LIFR
conditions in West Side Valleys. Another strong front will affect
the region today, bringing another round of widespread showers and
gusty southerly winds, including areas of low level wind shear near
the coast  and over the Umpqua Basin with south to southwest winds
of 40 to 50 kts at 2000 feet. This front will push inland late
morning and through the afternoon, bringing areas of MVFR and
widespread terrain obscurations. /BR-y

&&

.MARINE...Updated 200 AM PST Sunday December 22, 2024...Very high,
steep, and chaotic mixed seas will be a persistent feature in the
marine waters through much of the forecast period. Multiple strong
fronts will pass through the area today and through the holiday
week, bringing multiple rounds of gale force south winds, with storm
force gusts a possibility with each front.

The next front in the series arrives early this morning and south
winds increase rapidly to gales with occasional storm force gusts by
late morning and afternoon along with very high, steep, and chaotic
mixed seas. The pattern repeats again Sunday night and Monday as
winds ease while very high background west swell remains. This is
immediately followed by another strong front later Monday. As a
deepening low pressure moves along 130W Monday afternoon, pressure
gradients will be stronger with this front, and as a result winds
will be higher - gales at least and storm force winds are possible.
We've extended hazards out through late Monday night, which includes
a Hazardous Seas Warning for all areas from late tonight into Monday
afternoon and then a Gale Watch for all areas starting Monday
afternoon. Currently, seas of 15 to 24 feet are forecast today into
Tuesday.

&&

.PREV DISCUSSION... /Issued 347 AM PST Sun Dec 22 2024/

DISCUSSION...Active weather will continue across SW Oregon and
northern California today and through much of the next week,
taking us through Christmas and toward the New Year. We are smack
dab in the middle of our climatologically wettest part of the
year, and much of this week will confirm that. Several windy, wet
frontal systems will roll through the area between now and next
weekend in a largely progressive weather pattern with an active
Pacific jet stream that will ensure the parade of storms into the
PacNW. Of course, the details matter, so we'll attempt to hash
them out for you over the course of the week.

One thing that stands out is, for the most part, snow levels will
be high enough to keep the most impactful snowfall near and above
the higher major passes (Siskiyou Summit/Lake of the Woods)
through Christmas Day. That isn't to say there won't be any winter
impacts during the period, just that they will be relatively
minor compared to what could occur in a wet pattern like this. Two
fronts, one this afternoon into this evening and another stronger
one later Monday into Tuesday, will bring rain and breezy to
windy conditions followed by post-frontal showers. There should be
about a 6-12 hour break following each of these fronts through
Christmas Day. The first one today looks pretty typical. Expect
some rain to develop at the coast late this morning, then spread
inland across the area this afternoon, eventually to the east side
by late afternoon. Model pressure gradients peak in the -4 to -5
mb range OTH-ACV, so we expect some breezy winds along the coast,
but not enough for warnings. MFR-RDD gradient peaks around -6 mb
and this will result in gusty south winds in the Shasta Valley
and the southern end of the Rogue Valley prior to the onset of
precip. A Wind Advisory is in effect for those areas, where wind
gusts could reach 45 to 50 mph. We are expecting gusty south
winds over the east side too late this afternoon/evening, but
these probably remain just below advisory levels. Rain amounts of
0.10-0.30 of an inch seem like a good bet in most west side
valleys as well as over most of the east side, though less than
0.10 of an inch will occur in portions of Modoc County and the
deserts east of Winter Rim. The most precip will fall along the
coast, particularly in the coast ranges of Curry County and into
portions of western/southern Siskiyou County where amounts of
0.75-1.50 inches will be common. As mentioned before, snow levels
stay largely high enough to keep any snow confined to the highest
mountains above 5500 feet tonight.

The second front will take aim at the coast Monday night. This
front will be supported by a strong upper level disturbance that
will spawn a rapidly deepening surface low that will track
northward just outside of 130W. Pressure falls associated with
the low are significant with the low bombing out just west of
Vancouver Island late Monday night. Models are showing surface
pressures down below 970 mb with some of the strongest solutions
showing it reaching below 960 mb. This one should be windier than
its predecessor, as model wind fields do show a 55-65 kt mid-
level jet crossing the area late Monday afternoon/evening. We've
issued a High Wind Watch for the Shasta Valley and it should be
windy enough again for additional wind advisories in the Rogue
Valley and east side. It's tricky along the coast, since the flow
backs to the south/southeast, which isn't favorable for high winds
along the coast (and the gradient OTH-ACV is only -6 mb). We've
held off any headlines there despite the strength of the low well
offshore. Once again, another slug of high PWATs/IVT will move
inland with the front, so once the flow shifts to SSW, downslope
effects here in the valley should give way to rapidly increasing
rain chances Monday evening. Since this front is moving quickly,
the associated moderate AR should pass through in relatively short
order. The steadiest precip will push east of the Cascades
Tuesday morning and precip becomes more showery behind it. All in
all, rain amounts are more impressive with this one, especially
inland. Amounts are largely in the 0.50-2.00 inch range area wide,
but again, highest in Curry and western/southern Siskiyou
counties, where tallies could reach 3.00 inches in some areas.

Colder air will move in behind this system with snow levels
dropping to around the higher passes by Tuesday morning. As
mentioned, though, much of the precip will be ending by then, so
accumulations in the mountains should be relatively minor and in
the 2-6 inch range during Tuesday. Christmas Eve into Christmas
Day, weak short wave ridging should arrive resulting in a period
of drying, but this could also mean a red-nosed guided sleigh may
be necessary. The break will last most of Christmas Day for much
of the area, but the next moisture-laden front will push toward
the PacNW with precipitation breaking out along the coast by
afternoon, and spreading inland by evening. Wednesday night into
Thursday will be another wet one. This time, snow levels will be
low enough to support significant mountain snowfall with
preliminary amounts of 10-20 inches in the Cascades/Siskiyous and
Mt Shasta region. Most of the accumulation should be up above I-5
(above 4000 feet), but could briefly come down to pass level.

At least a few more wet fronts will come in late in the week and
into next weekend. As such, rivers, creeks and streams will be on
the rise. We'll be monitoring this for flood potential as we head
toward the New Year. The good news is that extended guidance (Week
2 after Dec 30) is showing a trend toward drier conditions.
-Spilde

BEACH HAZARDS...Updated 200 AM PST Sunday, December 22, 2024...
Numerous fronts will bring periods of increasing swells and
dangerous surf conditions this weekend and through next week. A High
Surf Advisory remains in effect through this evening, with large
breaking waves of 21 to 26 feet expected. It will be followed
immediately by a High Surf Warning from late this evening through
Monday evening as the next, stronger front will bring dangerously
large breaking waves of 25 to 33 feet. Conditions are expected to
slowly improve on Tuesday, but another round of dangerous surf
conditions can be expected late Wednesday (Christmas Day) through
Thursday, if not longer.

Extremely large breaking waves will create very hazardous conditions
along beaches and area shorelines. Waves will inundate beaches and
surge into normally dry areas. Infrastructure damage and significant
beach erosion can be expected. Stay away from area beaches during
this period of active weather. /BR-y

&&

.MFR WATCHES/WARNINGS/ADVISORIES...
OR...Wind Advisory until 7 PM PST this evening for ORZ026.

     High Surf Advisory until 10 PM PST this evening for ORZ021-022.

     High Surf Warning from 10 PM this evening to 4 AM PST Tuesday
     for ORZ021-022.

CA...Wind Advisory until 7 PM PST this evening for CAZ081.

     High Wind Watch from Monday afternoon through late Monday night
     for CAZ081.

PACIFIC COASTAL WATERS...Gale Warning until 7 PM PST this evening for
     PZZ350-356-370-376.

     Hazardous Seas Warning from 7 PM this evening to 1 PM PST Monday
     for PZZ350-356-370-376.

     Gale Watch from Monday afternoon through late Monday night for
     PZZ350-356-370-376.

&&

CC