Saturday, December4, 2021
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Marine Weather and Tides
Dallas, OR

Version 3.4
NOTICE
3/30/2021 -- ANZ330 has been split into ANZ331 and ANZ332. Click EDIT in Marine Forecast and select your new zone.
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 7:32AMSunset 4:33PM Saturday December 4, 2021 6:18 AM PST (14:18 UTC) Moonrise 8:13AMMoonset 4:54PM Illumination 0% Phase: New Moon; Moon at 0 days in cycle
NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.
Marine Forecasts
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PZZ255 Coastal Waters From Cascade Head To Florence Or Out 10 Nm- 236 Am Pst Sat Dec 4 2021
.gale warning in effect from 10 am pst this morning through this afternoon...
Today..S wind 10 to 15 kt with gusts to 20 kt, becoming sw 20 to 25 kt with gusts to 35 kt. Combined seas 12 ft with a dominant period of 14 seconds. Rain.
Tonight..N wind 15 to 20 kt with gusts to 25 kt, easing to 10 to 15 kt with gusts to 20 kt after midnight. Wind waves N 2 ft at 5 seconds. NW swell 9 ft at 11 seconds.
Sun..NE wind 5 to 10 kt. Gusts to 15 kt early in the morning. Wind waves ne 1 ft at 4 seconds. NW swell 8 ft at 10 seconds.
Sun night..E wind 5 to 10 kt, becoming S 10 to 15 kt with gusts to 20 kt after midnight. Wind waves S 3 ft at 5 seconds. NW swell 6 ft at 10 seconds. Rain.
Mon..SW wind 10 to 15 kt. Gusts to 25 kt. Wind waves sw 3 ft at 5 seconds. W swell 8 ft at 10 seconds. Rain.
Mon night..W wind 5 to 10 kt. Gusts to 15 kt in the evening. Wind waves W 1 ft at 4 seconds. W swell 8 ft at 10 seconds. Chance of showers.
Tue..W wind 5 kt, becoming sw 10 to 15 kt. Wind waves 2 ft. W swell 7 ft.
Wed..NW wind 15 to 20 kt, easing to 10 to 15 kt. Wind waves 3 ft. W swell 8 ft.
PZZ200 236 Am Pst Sat Dec 4 2021
Synopsis for the southern washington and northern oregon coast.. A low pressure system moves across the waters on today with gales expected. More settled conditions on Sunday as high pressure builds over the waters. Active weather returns early next week.


7 Day Forecast for Marine Location Near Dallas, OR
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location: 44.99, -123.35     debug


Area Discussion for - Portland, OR
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FXUS66 KPQR 041102 AFDPQR

Area Forecast Discussion National Weather Service Portland OR 302 AM PST Sat Dec 4 2021

SYNOPSIS. Another fast moving front will push across region today, with rain, along with some light snow for the Cascades. Chilly tonight, with frost and fog for inland valleys. Rain returns later Sunday night into Monday, as a rather robust front moves across region. This front will usher much cooler air into the region. Cool and unsettled weather continues for most of next week, with snow levels running 1500 to 2500 feet, though could be even lower towards end of next week.

SHORT TERM. Today through Monday . Inland areas under plenty of low clouds this am, with areas of fog for areas of the Cowlitz Valley southward through Vancouver/Portland metro, and down into to the mid-Willamette Valley. Farther to the south, low clouds that persisted in the evening remain, with little if any fog. These low clouds will last into this am, but will break up a bit more after sunrise, as a front approaches.

That front is associated with weather system that was centered about 350 to 400 miles west of Astoria (as of 2 am). This system is pushing hard to the east, riding a 140 to 150 kt jet. But that jet maxima will lift a bit more to the north this am, pushing inland over southern British Columbia. With that, the low will also lift a bit north, moving onto the south Washington coast (likely around Hoquiam) around midday. As the low approaches, most of the main lift and moisture will be to the north and east of the low's track. As such, will see rain will increase over southwestern Washington between 6 and 8 am, but will take a bit longer for the rain to spread across northwest Oregon. Timing such that this that will be a 10 am to noon timeframe when rain spreading over northwest Oregon, and perhaps not until closer to noon for areas farther south such as Lane County. Will trend forecasts in this direction.

Rainfall amounts will vary drastically across the region, with 0.50 to 0.75 inch over parts of southwest Washington and the far north Oregon coast/Coast Range (higher amounts toward the higher terrain). As move to the south over rest of northwest Oregon, rainfall mostly 0.10 to 0.20 for northwest Oregon, with 0.25 to 0.50 over higher terrain. Even less for areas to south of Salem, with 0.05 to 0.10 for those areas. Snow levels are lower today, running 4500 to 5000 feet. That, along with the anticipated QPF, would expect to see a few inches for the Cascades. But, with main snow would be on the Washington Cascades, with up to 6 inches on highest peaks, such as Mount St Helens.

System will also bring somewhat breezy south to southwest winds to the region later this am. Gusts 35 to 45 mph for most areas after 8 am on the coast, and 20 to 30 mph farther inland after 10 am. Once the front comes onshore, sometime in late morning to early afternoon, winds will turn more westerly but still somewhat breezy.

System will gradually weaken later today into the evening, with precipitation waning. Then, another chilly night under partial clearing. Winds ease overnight, setting up another night with fog and areas of frost as temperatures drop into the lower to mid 30s. After a chilly start, looks like will see variable clouds on Sunday with cool afternoon. Highs generally stay in the mid 40s.

Later Sunday night, the next shortwave will approach from the northwest after rounding the northern ridge axis. Past models runs have generally come together with the 12z, 18Z, and 00Z runs generally showing showing the surface low center reflection slightly trailing the shortwave trough axis. This indicates snow levels may start 1500 to 2000 feet across our northern tier, such as inland southwest Washington, late Sun night, but will then quickly rise toward 4500 to 5500 feet Monday am. This shortwave does have a warmer and moisture subtropical origin and has potential to bring advisory level snow amounts to the south Washington Cascades, mostly Monday morning. The upper shortwave trough and trailing surface low then slide south across the CWA Monday afternoon to bring colder advection and lowering snow levels back toward 3000 feet Monday evening. By then, however, the majority of QPF will have exited the area. When all done, snowfall totals for Sunday night to Monday evening will expected to be 10 to 18 inches for the Washington Cascades, with 8 to 12 inches for the Oregon Cascades. Will likely need to post a Winter Storm Watch for the Cascades for Monday and Monday night, but too early to do so at this time. Will coming shifts continue to evaluate and make that call. /Rockey

LONG TERM. Tuesday through Thursday . Starting Tuesday, conditions will begin to settle as a weak ridge will build over the area. This ridge should keep the area generally rain free - or at least very little rainfall accumulation which would generally be contained to higher terrain. However, this will be short lived as the upper level pattern suggests another strengthening trough advancing over the area on Wednesday afternoon which is being enhanced by the jet stream at 250mb. Wind speeds within the streak range from around 140-160kt between the GFS, ECMWF, and Canadian models, but this is just one instance of support for this trough. Cooler air is also beginning to wrap in behind the trough which will aid in strengthening the overall system.

Enhanced precipitation is expected on Wednesday especially along the Cascades. There is still some uncertainty in regards to precipitation amounts with this system, but interestingly enough, ensembles are it a lot better agreement than with the low pressure system expected on Monday. Most ensemble members are in line with precipitation picking back up on Wednesday afternoon and persisting through the remainder of the week with few, if any breaks. Terrain influences may increase accumulations along the Cascades.

One challenge that will start on Thursday are temperatures as there will be the intrusion of significantly cooler air than we have seen for a few weeks. Aloft, temperatures behind the system on Wednesday are sitting around -5C at about 5000 ft which will likely persist through the remainder of the work week allowing temperatures to steadily cool over the following days. Snow levels will likely drop through the end of the week, with the potential to see levels around 1500-2000 ft by Thursday afternoon. Even with those lower levels, a slight ridging pattern may help keep any precipitation at bay. -Muessle

AVIATION. 12Z TAFS: IFR/LIFR fog & low stratus filling much of the Willamette Valley this morning, while coastal area mostly VFR as mid level cloud arrive ahead of the next system. At the coast, will see low MVFR to IFR conditions spreading from north to south from about 15-19Z as the front near, then trend to mostly VFR 00-04Z Sun behind the front. Winds at the coast will become gusty with south to southwest gusts 30-35 kt, then a quick shift to the northwest as the front slides moves south along the coast. LLWS expected at KAST and vicinity this morning with southwest wind 30-50 kt near 2000 ft. For inland areas, increasing south wind in the valley expected to slowly lift fog and stratus with IFR conditions gone 16-19Z and lifting to a MVFR to VFR cigs per HREF guidance. MOS and model soundings in general agreement as well. MVFR should become more widespread after 19Z ahead of the front, the trending to VFR 00-03Z after frontal passage.

For detailed regional Pac NW aviation weather information, go online to: https://weather.gov/zse

KPDX AND APPROACHES . LIFR in low stratus and vis reduction as well. South wind to increase through the morning to aid in scouring the low clouds. This expected to occur around 16Z with VFR to MVFR through about 00Z then followed by VFR in the west to northwest flow behind the front.

MARINE. The next low pressure system will move east across the northern zones this morning and then push inland, likely along the south Washington coast mid to late afternoon. Will see south to southwest winds increase rapidly across all coastal waters in the morning with Gales expected. May even see gusts up to 40 kt with the associated front. The front will move through Sat afternoon with a sharp wind shift to the west then northwest. Northerly winds around 25 kt are expected to continue behind the front, especially across the northern coastal waters. Will keep the Gale warning for the northern waters through 6 PM Saturday. Conditions on Sunday appear to be more settled as high pressure builds over the waters along with light offshore flow. Seas will subside to around 6 ft by Sunday evening. More active weather returns on Monday as a low is forecast to move into the region from the north. Models are coming into better agreement with this system but still some uncertainty. /mh

BEACH HAZARDS . Perigean tides are expected this weekend which will bring exceptionally high tides Saturday afternoon. High tides are expected to reach or exceed 11 ft. Minor tidal overflow flooding is possible in low lying areas near beaches, estuaries and other exposed susceptible areas. /DH

PQR WATCHES/WARNINGS/ADVISORIES. OR . Coastal Flood Advisory from 11 AM this morning to 2 PM PST this afternoon for North Oregon Coast.

WA . Coastal Flood Advisory from 11 AM this morning to 2 PM PST this afternoon for South Washington Coast.

PZ . Gale Warning from 6 AM this morning to 6 PM PST this evening for coastal waters from Cape Shoalwater WA to Cascade Head OR out 60 nm.

Small Craft Advisory from 6 AM to 10 AM PST this morning for coastal waters from Cascade Head OR to Florence OR out 60 nm.

Gale Warning from 10 AM this morning to 4 PM PST this afternoon for coastal waters from Cascade Head OR to Florence OR out 60 nm.

Small Craft Advisory until 7 AM PST this morning for Columbia River Bar.

Small Craft Advisory from 2 PM this afternoon to 8 PM PST this evening for Columbia River Bar.




www.weather.gov/portland

Interact with us via social media: www.facebook.com/NWSPortland www.twitter.com/NWSPortland


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SBEO3 - 9435380 - South Beach, OR 45 mi48 min SW 7G13 51°F 52°F1020.2 hPa
NWPO3 - Newport, OR 46 mi78 min SW 14G16 51°F
TLBO3 - 9437540 - Garibaldi, Tillamook Bay, OR 49 mi48 min 50°F1019.2 hPa

Wind History for South Beach, Yaquina River, OR
(wind in knots)    EDIT      (on/off)   Help
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This dayE6
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
McMinnville, McMinnville Municipal Airport, OR18 mi25 minN 00.50 miFog40°F38°F93%1020.2 hPa
Salem - McNary Field, OR18 mi22 minS 710.00 miA Few Clouds43°F40°F89%1020.2 hPa

Link to 5 minute data for KSLE

Wind History from SLE (wind in knots)
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This day0N3N5N7NE8E6E7E3E500000SW30S6S5S7S6S6S74S7
1 day agoW6W60W40NW7N5N7N6NE8N9N7N7N10N8N6N7N6N6N4NW5N4NW4NW4
2 days ago0NW4000N3N4NW40NW4NW40S300W30NW3N400000

Tide / Current Tables for Nestucca Bay entrance, Oregon
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Nestucca Bay entrance
Click for Map
Sat -- 12:29 AM PST     6.99 feet High Tide
Sat -- 05:48 AM PST     2.62 feet Low Tide
Sat -- 07:37 AM PST     Sunrise
Sat -- 08:16 AM PST     Moonrise
Sat -- 11:32 AM PST     9.69 feet High Tide
Sat -- 04:33 PM PST     Sunset
Sat -- 04:55 PM PST     Moonset
Sat -- 06:58 PM PST     -1.78 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Nestucca Bay entrance, Oregon, Tide feet
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6.9
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4.6


Tide / Current Tables for Kernville, Siletz River, Oregon
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Kernville
Click for Map
Sat -- 12:58 AM PST     5.47 feet High Tide
Sat -- 06:29 AM PST     1.91 feet Low Tide
Sat -- 07:37 AM PST     Sunrise
Sat -- 08:16 AM PST     Moonrise
Sat -- 12:01 PM PST     7.57 feet High Tide
Sat -- 04:35 PM PST     Sunset
Sat -- 04:56 PM PST     Moonset
Sat -- 07:39 PM PST     -1.29 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Kernville, Siletz River, Oregon, Tide feet
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5.1
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NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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