Thursday, January23, 2020
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Marine Weather and Tides
Long Beach, WA

Version 3.4
NOTICE
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 7:48AMSunset 5:05PM Thursday January 23, 2020 10:23 AM PST (18:23 UTC) Moonrise 7:14AMMoonset 4:00PM Illumination 2% Phase: Waning Crescent; Moon at 28 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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PZZ210 Columbia River Bar- 209 Am Pst Thu Jan 23 2020
.small craft advisory in effect from 1 pm pst this afternoon through this evening...
In the main channel.. - general seas...7 to 9 feet through Friday morning. - first ebb... Around 330 am Thursday. Seas to 11 ft with breakers possible. - second ebb...strong ebb around 345 pm Thursday. Seas to 12 ft with breakers possible. - third ebb...around 415 am Friday. Seas to 11 ft.
PZZ200 209 Am Pst Thu Jan 23 2020
Synopsis for the southern washington and northern oregon coast.. A nearly stationary front will move northeast over the waters Thursday, moving inland Friday morning. Another warm front, stemming from the pacific ahead of a gulf of alaska, low will move northeast inland Saturday morning. Active weather remains through next week.


7 Day Forecast for Marine Location Near Long Beach, WA
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location: 46.37, -124.05     debug


Area Discussion for - Portland, OR
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FXUS66 KPQR 231305 AAA AFDPQR

Area Forecast Discussion National Weather Service Portland OR 235 AM PST Thu Jan 23 2020

SYNOPSIS. Rain increasing today, as a cold front slow pushes into the region. Heaviest rain will be in the evening. Then showery later tonight and Fri, though showers will be decreasing Fri afternoon. Unsettled weather continues this weekend into early next week, with rain at times. But, temperatures stay mild, with snow levels remaining mostly above the major passes of the Cascades.

SHORT TERM. Tonight through Saturday . Warm front has lifted north of the region Wed evening, with rain generally confined the north of the region early this morning. However, cold front just offshore, and will slowly creep eastward today. Light rain over the coastal waters and along the coast this morning, as well as over the north Coast Range and into the Willapa Hills.

Will be breezy across the region today, with moderate south winds. Gradients never open up completely, as a southeasterly gradient persists until the front passes. So, winds that are over the region this am will persist into later afternoon and early evening. So, along the coastal headlands and open beaches, will see gusts of 45 to 55 mph throughout the day. The strongest will be on headlands that are exposed to south winds, as well as those areas where south winds can be channeled between caps along and near the headlands. Away from beaches, coastal communities generally will see gusts 30 to 45 mph. Breezy south winds farther inland as well, with gusts 30 to 45 mph over the higher terrain of the coastal mtns, and 25 to 35 mph through the Willamette Valley.

As the cold front progresses eastward, and slowly at that, rain will gradually spread inland. Rain will spread across much the inland north today, with heavier rain in the afternoon. Bit of a break for the interior, with not much in way of rain for areas to south of Salem this am. Will PoPs lower for those area, with 30 to 50 pct for this am. Then, increasing PoPs this afternoon.

As the front pushes to the coast later today, rain could be heavy at times along the coast and over the higher terrain of the coastal mountains. Total rainfall of 1 to 3 inches for the Willapa Hills and Coast Range, though closer to 1 to 1.5 inches farther south. Cascades generally at 1 to 3 inches over South Washington Cascades, with 0.75 to 1.50 inches for the Oregon Cascades, lowest to south of Santiam Pass. Snow levels stay at or above 6000 feet into tonight, then lower to 4500 to 5000 feet later tonight. But, by that time, precipitation will be waning, so snowfall stays under 6 inches.

Timing suggests cold front will push onshore this evening, and push to the Cascades by midnight. Rain will transition to showers around or just after midnight. Still mild, with south to southwest flow. Showers gradually decreasing on Friday. Fri afternoon may not be too bad, weatherwise, with mix of sun and clouds, with scattered showers. Overall, not too bad for mid to late January.

Models continue to show another low pres area lifting north across the region later Fri night into Sat. But, has been some model differences in strength of the low, and well as the QPF. Will keep that time frame broadbrushed, with rain increasing late Fri night. Even on Saturday, PoPs problematic, as boundary still over the region. Will keep PoPs high, with 70 to 90 pct, as hard to see where if any break may occur. /Rockey

LONG TERM. Saturday night through Wednesday . Models remain in good agreement that a progressive weather pattern will continue to bring periods of valley rain and mountain snow through the end of the forecast period. Guidance continues to hint at a weak surface low pressure system moving across the waters Saturday night into Sunday which could result in a brief period of windy conditions along the coast as the trailing cold front moves onshore Sunday morning. Additional shortwave disturbances look to then move across the PNW through the first half of next week which will keep valley rain and mountain snow going, with periods of heavy rain possible on Monday and Wednesday. We look to be between systems on Tuesday. Unfortunately, zonal flow aloft will likely keep rain/snow chances elevated Tuesday, but would not be surprised to see a period of drier conditions Tuesday night. /64

AVIATION. Southerly flow through much of the forecast area continues as a weak front pushes inland Thu morning. In contrast, easterly winds will persist through the gorge, although not overly strong. MVFR cigs expected through the next 24 hrs as the atmosphere is fairly saturated. The southerly winds through the valley has mixed conditions, keeping visibility VFR. Rain showers will last through Fri morning with heavier showers along the coast. During times of the heavier showers, visibility may be reduced at times. In the post frontal environment, around 04Z Fri, a weak ridge will build in causing winds to generally lower inland. Gusty conditions will persist along the coast. By the end of the period, yet another front is approaching northwest Oregon and southwest Washington.

KPDX AND APPROACHES . Mainly MVFR cigs through the period as the column of air over the area is fully saturated. A chance of periods of VFR cigs are possible in the afternoon, it will be short-lived as a cold front approaches the area after 04Z Fri. Southerly winds will persist through the next 24 hrs ranging from 10 to 15 kt. Winds aloft are more southwesterly. Because of this trend, there is a chance for some LLWS, however conditions are marginal so was left out of the TAF. /Muessle

MARINE. Active pattern will persist through the next week as a series of fronts stemming from the Pacific move over the waters. Thu there are several mesoscale lows embedded within the flow of a broad trough. These weak lows are creating several different swells from both a southerly and westerly direction. The southerly swell is the most dominate through Thu afternoon with heights around 11 ft with a 10 second period. The westerly swell will become more dominate on Thu night and will be consistent through next week. In general, heights will be around 12 to 14 ft through the next several days with a few periods of building seas; the first overnight Thu-Fri, then again Sun night through Mon. With both of these systems seas will likely build up to 17 ft. Occasional seas to 18 ft are possible, but not expected to be widespread.

Winds wind peak Thu as the gale warning extends through Thu afternoon. The strongest winds will be in the central outer waters. Winds will return to 15 to 20 kt gusts up to 25 kt Thu night through Sat. /Muessle

PQR WATCHES/WARNINGS/ADVISORIES. OR . None. WA . Coastal Flood Advisory from 9 AM this morning to 3 PM PST this afternoon for South Washington Coast.

PZ . Gale Warning until 4 PM PST this afternoon for coastal waters from Cape Shoalwater WA to Florence OR out 60 NM.

Small Craft Advisory until 6 AM PST early this morning for Columbia River Bar.

Small Craft Advisory from 1 PM this afternoon to 7 PM PST this evening for Columbia River Bar.



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 nm offshore. This area is commonly referred to as the forecast area.


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46243 - Clatsop Spit, OR - 162 11 mi53 min 50°F12 ft
ASTO3 - 9439040 - Astoria, OR 19 mi53 min S 11 G 19 54°F 43°F1013.7 hPa
TOKW1 - 9440910 - Toke Point, WA 24 mi59 min S 20 G 27 51°F 48°F1013.6 hPa
46029 - COL RIVER BAR - 20NM West of Columbia River Mouth 28 mi33 min S 27 G 33 51°F 49°F13 ft1012.8 hPa (+0.0)51°F
46248 - Astoria Canyon, OR (179) 35 mi53 min 50°F14 ft
WPTW1 - 9441102 - Westport, WA 37 mi47 min S 15 G 25 50°F 48°F1012.8 hPa

Wind History for Astoria, OR
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Astoria, Astoria Regional Airport, OR17 mi28 minSSW 19 G 3210.00 miLight Rain and Breezy54°F51°F90%1014 hPa

Link to 5 minute data for KAST

Wind History from AST (wind in knots)
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Tide / Current Tables for Tarlatt Slough, Willapa Bay, Washington
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Tarlatt Slough
Click for Map
Thu -- 01:05 AM PST     8.73 feet High Tide
Thu -- 06:48 AM PST     4.04 feet Low Tide
Thu -- 07:13 AM PST     Moonrise
Thu -- 07:49 AM PST     Sunrise
Thu -- 12:18 PM PST     10.48 feet High Tide
Thu -- 03:59 PM PST     Moonset
Thu -- 05:06 PM PST     Sunset
Thu -- 07:41 PM PST     0.01 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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8.18.78.57.86.85.54.44.156.58.19.610.410.39.486.241.80.30.11.12.95.1

Tide / Current Tables for Fort Canby, Jetty A, Columbia River, Washington
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Fort Canby
Click for Map
Thu -- 12:02 AM PST     7.40 feet High Tide
Thu -- 04:54 AM PST     4.16 feet Low Tide
Thu -- 07:12 AM PST     Moonrise
Thu -- 07:49 AM PST     Sunrise
Thu -- 11:10 AM PST     9.15 feet High Tide
Thu -- 04:00 PM PST     Moonset
Thu -- 05:07 PM PST     Sunset
Thu -- 06:00 PM PST     -0.90 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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7.47.16.25.34.54.24.55.46.67.88.79.18.87.45.53.31.3-0.3-0.9-0.40.82.64.56.2

Weather Map
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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.
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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Portland, OR (13,3,4,5)
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Ground Weather Radar Station Portland, OR
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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.