Sunday, January17, 2021
Privacy Policy
L-36.com

Marine Weather and Tides
Chinook, WA

Version 3.4
NOTICE
8/26/2020 The 7 day forecast is taking about 5 seconds to load but it will eventually load. NOAA is still working on it.
8/18/2020 NOAA continues to have trouble. Wind guest will occasionally be left off graphs. I am working with NOAA to resolve the issue.
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 7:52AMSunset 4:58PM Sunday January 17, 2021 12:30 AM PST (08:30 UTC) Moonrise 10:42AMMoonset 10:09PM Illumination 16% Phase: Waxing Crescent; Moon at 4 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
    EDIT      (on/off)   Help
PZZ210 Columbia River Bar- 816 Pm Pst Sat Jan 16 2021
.small craft advisory in effect through Sunday evening...
In the main channel.. - general seas...around 8 ft, but building to 10 to 12 ft Sunday afternoon. - first ebb...around 745 am Sunday. Seas to 11 ft. - second ebb...around 745 pm Sunday. Seas to 13 ft. - third ebb...around 830 am Monday. Seas to 15 ft.
PZZ200 816 Pm Pst Sat Jan 16 2021
Synopsis for the southern washington and northern oregon coast.. High pressure over the waters will weaken tonight as a weak frontal system moves through the waters. High pressure returns Sunday and will persist through early next week. Meanwhile, thermal low pressure develops over the south oregon waters Sunday morning and then expands north Sunday night and Monday.


7 Day Forecast for Marine Location Near Chinook, WA
   Hourly   EDIT   Help
location: 46.27, -123.95     debug


Area Discussion for - Portland, OR
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
FXUS66 KPQR 170436 AAA AFDPQR

Area Forecast Discussion . UPDATED National Weather Service Portland OR 835 PM PST Sat Jan 16 2021

Updated Aviation and Marine Sections

SYNOPSIS. A dry but mostly cloudy day expected today. A weak and quick moving front will produce rain later tonight and early Sunday morning with snow primarily above the Cascade passes. Dry weather is expected Monday through Wednesday with gradually decreasing nocturnal fog into the week and nighttime temperatures cooling into the 30s. A low pressure system is expected late in the week with some areas having potential for accumulating snow lowering to around 1000 feet. However there, amounts appear very light.

SHORT TERM. Tonight through Tuesday . A broad and strong ridge has its axis crossing the inland PacNW this afternoon. Low pressure well north in the Gulf of Alaska is sending a cold front across the top of the ridge. Most of the energy and cooler air, however, will pass into British Columbia. The southern end of the front will flatten the ridge, but not necessarily all that much. Rain will arrive later tonight and will largely stay on the warmer side of the upper jet. Snow level will rise to 6000-7000 feet tonight as the bulk of the precip arrives. Expect around 1/4 inch QPF on the higher end along the coast and coast range but will not be surprised to wind up with less on average. Behind the frontal passage early Sunday morning, cannot rule out an inch or two of snow falling as low as 3500 feet, but am not overly excited with this event.

Otherwise, the upper ridge budges very little and actually strengthens some with continental low pressure cutting off over southern California and the Desert Southwest by Monday night. This blocking pattern will send the threat of precip well north while the warmer air is pinched northward across our area. Expect morning clouds/fog and afternoon sun for Monday and Tuesday under an air mass bringing temperatures running a few degrees above normal. Nights will feel seasonably chilly, albeit cooler than recent and around freezing by Tuesday morning.

Given the clearer skies, this will allow the Columbia Basin to develop a cold pool resulting in higher pressure to form. The relative gradient across the Cascades in not particularly strong at around 5 mb, but will be enough paired with the cooler drainage winds to produce breezy conditions through the western Gorge and east Portland Metro beginning Monday night. /JBonk

LONG TERM. Tuesday night through Saturday . The aforementioned blocking pattern begins to weaken as the SoCal cutoff low begins drifting inland over the desert southwest. At the same time, a short wave well offshore starts lifting northeast toward the top of the ridge. Models generally agree this combination will begin to flatten the crest of the ridge and allow the shortwave to begin developing toward more of a compact closed low by Wednesday night. However, models greatly differ on the final form of the low and its position. The GFS is the most aggressive toward forming a closed low and bringing QPF starting Wednesday evening, while the EC and GEM keep it as more of an elongated open wave and hold off any precip threat until Thursday, if much at all. In all cases, the air mass accompanying this system will spend little time over the cooler north Pacific waters and will do little to significantly drop snow level beyond the higher foothills.

Cooler air continental air will likely trail the departing low/short wave Friday and Saturday. This will bring snow levels down to around 2000 feet, except where a continued easterly breeze will bring the snow level closer to 1000 feet. This occurs although with minimal, if any, precip in its wake heading into the weekend.

Going beyond the official forecast ending Saturday, today's combined model runs make Saturday night and Sunday the most interesting period to watch. A developing closed low drops south from the Bering sea and takes a near shore track down the BC coast. The resultant closed low on Sunday could end up anywhere from just off the Oregon coast to just outside of 130 West. This would place the CWA near or under prime diffluent flow aloft to produce precipitation. Additionally, some models then produce strong easterly pressure gradients across the Cascades which then bring cooler continental air across the Cascades. IF (notice the caps), IF this all comes together just right, then there is potential for a few inches of snow even across the interior valleys. That said, far too much can, and will likely change, between now and then. /JBonk

AVIATION. Predominately VFR across much of the area as of 04Z, but starting to see increasing areas of IFR in the Willamette Valley, generally KUAO to K77S. Expect the trend of increasing valley IFR coverage, with localized LIFR, to continue through 10Z or so, with increasing mid-level clouds above the stratus. A weak frontal system will reach the south Washington and far north Oregon coast between 06Z and 09Z and the remainder of the coast between 09Z and 12Z Sun. Would anticipate widespread IFR conditions over the coastal areas overnight through Sun morning. Inland areas likely to be predominant IFR 10Z through 20Z or so. Low-level north to northeast flow develops in the afternoon, which will result in VFR across much of the interior. The exception may be southwest Washington and the far north Oregon Coast Range where low-level onshore flow persists well into the afternoon.

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

KPDX AND APPROACHES . VFR at the terminal and vicinity as of 04Z. Cigs gradually lower through 10Z as a frontal system approaches the coast. There is a high chance of localized IFR to LIFR in the Tualatin River Valley 06Z to 10Z Sun. Light precipitation is expected to develop between 10Z and 12Z, with increasing IFR to MVFR conditions. These lower conditions will persist through 20Z Sun, followed by improvement to VFR in the afternoon. Weishaar

MARINE. Minimal changes to current forecast. Seas are generally in the 10 to 12 ft range this evening and will slowly subside to around 7 to 9 feet by early Sun. A weak frontal system moves through the waters overnight and will result in a shift to northwest wind between 12Z and 15Z.

High pressure builds in quickly from the NE Pacific Sunday. Meanwhile, a thermally-induced surface trough over the south Oregon waters Sun morninkg expands north Sun afternoon and evening. The thermal trough intensifies Sun night and Mon. A long-period swell train arrives Sunday, pushing seas back up into the mid teens by Monday morning. This swell initially arrives as an energetic set with periods in the 20 to 24 second range. Will show a transition Sun from the prevailing 12-14 second swell and a secondary 20-24 second swell, to making the latter swell set the primary swell by the afternoon. Winds and seas will reach small craft advisory level Sunday. TWill maintain the current small craft advisory for winds and seas starting Sunday morning. This long period swell will also heighten the risk of sneaker waves Sunday and through at least Monday and the current Beach Hazards Statement covers this well. Seas likely remain above 10 ft through Monday, then subside as high pressure and light winds prevail Tuesday and Wednesday. Weishaar/42

PQR WATCHES/WARNINGS/ADVISORIES. OR . None. WA . None. PZ . Small Craft Advisory until 10 PM PST this evening for coastal waters from Cape Shoalwater WA to Florence OR out 60 NM.

Small Craft Advisory from 10 AM Sunday to 4 PM PST Monday for coastal waters from Cape Shoalwater WA to Florence OR out 60 NM.

Small Craft Advisory until 10 PM PST Sunday for Columbia River Bar.



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


Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46243 - Clatsop Spit, OR - 162 10 mi35 min 47°F8 ft
ASTO3 - 9439040 - Astoria, OR 11 mi43 min SE 2.9 G 7 46°F 46°F1028.2 hPa
46029 - COL RIVER BAR - 20NM West of Columbia River Mouth 30 mi31 min SSW 9.7 G 14 51°F 51°F1028.4 hPa (+0.4)46°F
TOKW1 - 9440910 - Toke Point, WA 30 mi43 min SSE 5.1 G 5.1 46°F 49°F1028.1 hPa
46248 - Astoria Canyon, OR (179) 38 mi35 min 51°F9 ft
46211 - Grays Harbor, WA (036) 44 mi35 min 49°F9 ft
WPTW1 - 9441102 - Westport, WA 45 mi55 min ESE 4.1 G 5.1 44°F 49°F1028 hPa
TLBO3 - 9437540 - Garibaldi, Tillamook Bay, OR 49 mi43 min 1029.3 hPa

Wind History for Astoria, OR
(wind in knots)    EDIT      (on/off)   Help
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
Last
24hr
N5
N5
N2
N5
G8
N6
G9
N3
G7
NW3
SE2
G5
W3
N6
N3
G8
N1
G5
--
SE4
E2
NE2
S2
NW1
SE5
NE3
G6
NE1
G4
SE1
S2
E5
G8
1 day
ago
NE5
G8
NE2
G7
E7
G10
E5
G8
S1
SE4
SE3
S2
SE2
NW1
G4
SE4
SE4
--
SE5
NW2
--
--
S1
E1
SE1
SE2
--
N6
G9
NW2
G6
2 days
ago
N5
G10
NW6
G10
N8
G13
N10
G14
N11
G16
N9
G12
N9
G13
N9
G13
NW6
G10
N5
G9
S1
G6
E1
G5
SE4
E1
E2
NE4
G9
NE1
G4
S4
G11
E3
G8
SE4
G9

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports. Follow links for more data.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Astoria, Astoria Regional Airport, OR8 mi36 minSE 310.00 miLight Rain45°F43°F93%1028 hPa

Link to 5 minute data for KAST

Wind History from AST (wind in knots)
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
Last 24hrNE6NE6E7E6E5E6E6E4E4E4NE6NE3CalmW3E6E3E7E3CalmN5CalmSE3NE3SE3
1 day agoSW11
G19
SW7W8CalmN4CalmE3CalmCalmCalmNE3N4N5NW3W3NW3CalmCalmS3E3CalmE5E3Calm
2 days agoE7E8NE8E6NE6E11E8E7NE5NE6E7NE6NE6NE6E4E6NW6S8CalmCalmN7N9SW10
G20
SW13
G21

Tide / Current Tables for Chinook, Baker Bay, Columbia River, Washington
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Chinook
Click for Map
Sun -- 04:07 AM PST     7.81 feet High Tide
Sun -- 07:53 AM PST     Sunrise
Sun -- 09:32 AM PST     3.22 feet Low Tide
Sun -- 10:42 AM PST     Moonrise
Sun -- 03:30 PM PST     7.69 feet High Tide
Sun -- 04:59 PM PST     Sunset
Sun -- 09:51 PM PST     0.66 feet Low Tide
Sun -- 10:09 PM PST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
2.84.56.17.37.87.56.55.24.13.33.33.956.17.17.67.66.75.23.5210.71.2

Tide / Current Tables for Columbia River entrance (N. Jetty), Washington
   EDIT      (on/off)   Help   One Week of Data
Columbia River entrance (N. Jetty)
Click for Map
Sun -- 03:53 AM PST     7.22 feet High Tide
Sun -- 07:53 AM PST     Sunrise
Sun -- 09:24 AM PST     2.98 feet Low Tide
Sun -- 10:42 AM PST     Moonrise
Sun -- 03:16 PM PST     7.09 feet High Tide
Sun -- 04:59 PM PST     Sunset
Sun -- 09:43 PM PST     0.69 feet Low Tide
Sun -- 10:10 PM PST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
2.94.566.97.26.85.84.63.633.13.74.85.86.77.16.964.631.70.90.71.3

Weather Map
       (on/off)   Help Weather Map
wmap_P
GEOS Local Image of PacificNorthwest    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Ground Weather Radar Station




Cookie Policy:
This website uses cookies to save your settings. No personal information is saved. I do not collect statistics on your visit. You can disable cookies in your browser if you like but it is not recommended for this site. I do not sell cookies. Go to a bakery for that. In fact I do not sell anything. To disable cookies from L-36.com, please refer to the Help button in your browser.
Privacy Policy:
I do not sell or share any user data or anything else for that matter. The only personal information I save is in the site log which has a line for each page view which includes the IP address your browser sends in the header as well as which page you requested. I use this to block hackers and other bad actors. I do not use this raw data to create profiles on users. I periodically delete the log files. Google supplies the ads on this site. Because I do not track who you are, I cannot customize how these ads are served. They may be personalized to improve the ad experience. If you do not want personalized ads, please adjust the settings on the Google site HERE. NOTE: The best I can determine, this site is not subject to CCPA but I am doing my best to comply anyway.
Disclaimer:
The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerous of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.