Tuesday, December10, 2019
Privacy Policy
L-36.com


Marine Weather and Tides
Westport, OR

Version 3.4
NOTICE
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.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 7:41AMSunset 4:27PM Tuesday December 10, 2019 5:18 AM PST (13:18 UTC) Moonrise 3:47PMMoonset 5:56AM Illumination 98% Phase: Waxing Gibbous; Moon at 13 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- 253 Am Pst Tue Dec 10 2019
.small craft advisory in effect from this afternoon through this evening...
In the main channel.. - general seas...seas 6 ft, then near 9 ft late in the afternoon through early Wednesday. - first ebb...around 315 am Tuesday, with seas near 9 ft. - second ebb...strong ebb around 330 pm Tuesday. Seas near 13 ft with breakers likely. - third ebb...around 4 am Wednesday, with seas near 11 ft.
PZZ200 253 Am Pst Tue Dec 10 2019
Synopsis for the southern washington and northern oregon coast.. A front will move through the waters today with a stronger front on Wed likely to bring gale force winds. The active weather pattern continues through mid week with the possibility of a break late in the week.


7 Day Forecast for Marine Location Near Westport, OR
   Hourly   EDIT   Help
location: 46.15, -123.31     debug


Area Discussion for - Portland, OR
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
FXUS66 KPQR 101102 AFDPQR

Area Forecast Discussion National Weather Service Portland OR 301 AM PST Tue Dec 10 2019

SYNOPSIS. Mother Nature now playing catch up after our extended period of relatively dry weather, with a series of fronts that will push across the region over the next several days. First up arrives today, with light rain. But, much wetter front arrives Wed night into Thu, with areas of heavy rain. Snow levels will stay high, mostly at or above the passes. Cooler and showery weather arrives later Thu, and continues into the weekend. This cooler air will bring snow levels down to around 3000 feet for the weekend, with snow piling up in the Cascades.

SHORT TERM. Today through Thursday . After a relatively dry November and start to December, will see several days of rain across much of the region, as upper flow turns more westerly.

NOAA satellite imagery showing first front just offshore this am, with higher clouds being pushed out and ahead of the surface front. As expected, this front is getting stretched apart, thanks to a low pressure area near Vancouver Island and another low off the Calif coast. This stretching will weaken the front further and weaken the frontal lifting, resulting, with lower rainfall expected today. As is the case with such fronts, most of the precipitation will be light, and generally confined to being along and behind the surface front. Will trend forecasts in that direction, with light rain spreading to the coast this am, and inland later this morning.

Weak low pressure are off to our southwest, around 130W and 40N, will act to slow the inland progression of the frontal boundary, especially for northwest Oregon. So, with that in mind, will keep inland PoPs elevated for late afternoon into the early evening. This system will wind up being one of those high PoPs/low QPF (rainfall) events. Frontal remains will drag over the interior later today into the evening, with precipitation gradually decreasing this evening. Not a lot of signs for instability overnight, and that apparent from lack of colder cumulus offshore. So, with that in mind, seems reasonable that the rain/drizzle this evening will just come to an end in the evening, but continue for a time later over the Cascades.

Decreasing precipitation overnight, with relative dry period again late tonight into Wed am as will be between systems. But, next front will push towards the Pac NW later Wed. Have been model differences in timing of rain to the coast, but overall consensus is for rain to increase in the afternoon over much of the region, and pushing into the interior later in the afternoon and early evening. So, will maintain current trend that matches that timing. Will be rather wet Wed night into early Thu, with areas of heavy rain over the higher terrain. Model precipitation water values approaching 1.25 inch offshore Wed night, further supporting heavy rainfall for our area, especially over the higher terrain. For now, will keep total rainfall for Wed night and Thu am in the 1 to 3 inches range for the coast and coastal mountains, and 1 to 2 inches for the Cascades. Generally 0.75 to 1.25 inch for interior lowlands. Main front will push onshore later Thu am, with transition to breezy and showery weather for Thu afternoon. Will see enough instability over the coastal waters and coastal areas to include a slight chance of thunderstorms for Thu afternoon.

Snow levels stay above the major passes through Thu am, with heavy snow likely higher, mainly above 6000 feet. Could see up to a foot or more of snow at those elevations, but again, this will be well above the passes. /Rockey

LONG TERM. Thursday night through Monday . Models and their ensembles are in good agreement a broad shortwave trough will be in place over the Gulf of Alaska with a broad downstream and low amplitude shortwave ridge over the Great Basin late in the week. This will place the Pacific Northwest in a progressive westerly flow pattern through the first half of the weekend. Expect several rounds of showers Thursday night, Friday, and again on Saturday as shortwave trough slides eastward across the area. Snow levels should gradually lower from around 4000-5000 ft Thursday night to 2000-3000 ft Saturday as colder air from the Gulf of Alaska trough spreads eastward across the area. This should result in at least some snow for the Cascade passes Friday and Saturday, but at this point, it looks questionable that 6-12" will fall in any given 12 hour period at pass level. There seems to be reasonable agreement that shortwave ridging will then develop over the eastern Pacific and Pacific Northwest Sunday into Monday. This should result in the area temporarily drying out Sunday and/or Monday, but there is a bit more uncertainty in how this time period will play out when examining ensemble data. /Neuman

AVIATION. Widespread stratus across the area this morning with bases around 1000 ft and estimated tops near 2500-3000 ft. There is some IFR cigs and vis from about KMMV south in the Willamette Valley. Fog less of a factor this morning. Model consensus shows a improving trend through mid morning with high MVFR to VFR cigs developing. But as a front spreads rain into the area cigs and visibilities decrease again with IFR at the coast and MVFR inland. If areas like the Tualatin valley and KEUG area do not mix much, may not see much improvement. Showers diminish tonight but with onshore flow will likely see MVFR inland and lower at the coast.

KPDX AND APPROACHES . VFR prevailing with offshore flow through from the Gorge. Will see cigs lower as rain begins around midday, but do not expect MVFR until after 00Z Wed.

MARINE. Next front will bring southerly winds gusting 25 kt as it moves across the waters today. The front will move ashore by this evening, but overnight the next approaching system will bring increasing south winds. This front will likely bring gale force winds to the waters so have issued a Gale Watch for Wed and Wed night. Gales may end Wed evening but models disagree on the timing so for now will keep it through Wed night. Also the inner zones may just end up being a high end Small Craft Advisory.

Seas will be rising as well with around 10 ft today then another bump up to 15 to 17 ft later Wed and Thu with a gradual decline to 10 ft on Sat. /mh

PQR WATCHES/WARNINGS/ADVISORIES. OR . Air Stagnation Advisory until noon PST today for Cascade Foothills in Lane County-Central Willamette Valley-Greater Portland Metro Area-Lower Columbia-Northern Oregon Cascade Foothills-South Willamette Valley.

WA . Air Stagnation Advisory until noon PST today for Greater Vancouver Area-I-5 Corridor in Cowlitz County-South Washington Cascade Foothills.

PZ . Gale Watch from Wednesday afternoon through late Wednesday night for coastal waters from Cape Shoalwater WA to Florence OR out 60 NM.

Small Craft Advisory until 4 AM PST Wednesday for coastal waters from Cape Shoalwater WA to Florence OR from 10 to 60 NM.

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

Small Craft Advisory from 10 AM this morning to 1 AM PST Wednesday for coastal waters from Cape Shoalwater WA to Florence OR out 10 NM.



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

This discussion is for Northwest Oregon and Southwest Washington from the Cascade crest to 60 nautical miles offshore. This area is commonly referred to as the forecast area.


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
LOPW1 - 9440422 - Longview, WA 19 mi54 min 46°F1022.6 hPa
ASTO3 - 9439040 - Astoria, OR 25 mi48 min N 4.1 G 6 43°F 46°F1020.5 hPa
46243 - Clatsop Spit, OR - 162 44 mi18 min 49°F4 ft

Wind History for Longview, WA
(wind in knots)    EDIT      (on/off)   Help
Last
24hr
1 day
ago
2 days
ago

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports. Follow links for more data.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Southwest Washington Regional Airport, WA22 mi22 minSSE 610.00 miMostly Cloudy40°F37°F93%1023 hPa

Link to 5 minute data for KKLS

Wind History from KLS (wind in knots)
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
1
AM
2
AM
3
AM
4
AM
5
AM
Last 24hrCalmNW3NW3N3CalmN3CalmNW5CalmCalmCalmCalmE3CalmCalmS4S6S5S5SE83S4S8SE6
1 day agoCalmCalmCalmCalmS4SE4SE3SE6SE5SE3S3SE3CalmCalmCalmCalmCalmCalmCalmCalmCalmNW3CalmCalm
2 days agoSE7SE6SE7SE11
G16
SE8SE7SE8S3SE4CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm

Tide / Current Tables for Knappa, Knappa Slough, Columbia River, Oregon
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Knappa
Click for Map
Tue -- 12:41 AM PST     7.03 feet High Tide
Tue -- 05:58 AM PST     Moonset
Tue -- 06:36 AM PST     2.48 feet Low Tide
Tue -- 07:45 AM PST     Sunrise
Tue -- 12:03 PM PST     8.98 feet High Tide
Tue -- 03:47 PM PST     Moonrise
Tue -- 04:28 PM PST     Sunset
Tue -- 07:38 PM PST     -0.17 feet Low Tide
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
6.876.45.44.23.22.62.63.55.178.498.67.45.73.92.20.8-0-0.10.82.54.4

Tide / Current Tables for Settlers Point, Columbia River, Oregon
   EDIT      (on/off)   Help   One Week of Data
Settlers Point
Click for Map
Tue -- 12:34 AM PST     6.75 feet High Tide
Tue -- 05:58 AM PST     Moonset
Tue -- 06:31 AM PST     2.78 feet Low Tide
Tue -- 07:46 AM PST     Sunrise
Tue -- 11:56 AM PST     8.76 feet High Tide
Tue -- 03:48 PM PST     Moonrise
Tue -- 04:28 PM PST     Sunset
Tue -- 07:33 PM PST     -0.30 feet Low Tide
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
6.66.76.15.24.23.42.92.93.85.47.18.38.88.37.15.43.61.90.6-0.2-0.20.82.54.4

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
Wind Forecast for Portland, OR (8,2,3,4)
      (on/off)   Help

Ground Weather Radar Station Portland, OR
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

Cookie Policy:
This webiste uses cookies to save your settings. No personal information is saved. 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. I do not keep site logs longer than I need to to keep bad actors off the site. Basically, I delete them after looking at them. If you are subject to CCPA, Google ads on this site will not be based on your past behavior so you will likely not see an ad for a lawn mower just because you looked for one at a big box website. I do not believe this site is subject to CCPA but I am doing what I can to follow the guidelines 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 numerious 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.