Saturday, February29, 2020
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Marine Weather and Tides
South Bend, 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 6:55AMSunset 6:00PM Friday February 28, 2020 9:44 PM PST (05:44 UTC) Moonrise 9:22AMMoonset 11:13PM Illumination 31% Phase: Waxing Crescent; Moon at 6 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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PZZ110 Grays Harbor Bar- 806 Pm Pst Fri Feb 28 2020
.small craft advisory in effect through Saturday afternoon... Combined seas 10 to 12 ft building to 12 to 14 ft Saturday morning. Bar conditions rough with breakers possible. Maximum ebb currents will occur around 745 am and 8 pm Saturday.
PZZ100 806 Pm Pst Fri Feb 28 2020
Synopsis for the northern and central washington coastal and inland waters..A cold front moved through this evening. Strong onshore flow tonight will gradually ease Saturday and Sunday. A series of relatively weak fronts will move through the area Monday through Wednesday.


7 Day Forecast for Marine Location Near South Bend, WA
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location: 46.69, -123.82     debug


Area Discussion for - Portland, OR
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FXUS66 KPQR 282234 AFDPQR

Area Forecast Discussion National Weather Service Portland OR 230 PM PST Fri Feb 28 2020

SYNOPSIS. A cold front will move southeast through western Washington and Oregon Friday evening bringing a period of rain and a cooler air mass. Showers, and possibly a few thunderstorms will follow later tonight through Saturday night as a cold trough of low pressure aloft moves across the region. A lingering frontal boundary will result in a continued chance for rain through the middle of next week.

SHORT TERM. Tonight through Sunday . Radar and satellite showed a cold front approaching the coast Friday afternoon, which is expected to move across the forecast area this evening. While fairly narrow, there appears to be deep enough low level moisture to stick with high pops for a several hour period during frontal passage. The following upper trough is rather cold and expected to move across the region late Saturday and Saturday night. Model soundings continue to show a rather deep layer of instability extending up above 500 mb as the cold core passes through, with lapse rates suggesting a chance for thunderstorms and small hail across much of the region. Snow levels expected to drop down into the range of the Coast Range and Cascade Foothills early Saturday, and remain low into Sunday. While some snow accumulations appear likely, amounts generally expected to fall short of any sort of winter weather advisory criteria as the low level flow quickly weakens and turns northerly limiting orographic effects.

By Sunday the depth of the unstable layer is much reduced as subsidence begins under ridging aloft. This will greatly reduce chances for showers, restricting chances primarily to the Cascades and Coast Range. Sunday night and Monday sees the approach of a warm front and a return to a stable onshore flow, bringing an increase in clouds and chances for rain. Model time-height cross sections continue to show moisture primarily in the low levels below 850 mb, with best isentropic lift evident along the 290K isentrope.

LONG TERM. Monday night through Friday . Models tending to keep a baroclinic zone over the region through Wednesday night under a zonal flow aloft, so will need to keep a chance for rain through midweek. Best chances will tend to be across the northern parts of the forecast area. By Thursday models still in fairly good agreement with the general pattern, which is shown amplifying in response to a digging trough near 140W. This appears likely to result in a drier and warmer day on Thursday, followed by increasing chances for rain by Friday as the trough approaches the coast and pushes a cold front inland.

AVIATION. The cold front is expected to arrive along the coast around 02Z which will turn the winds into a more westerly pattern. Coastal sites will have a brief period of VFR in the post- frontal airmass but these conditions are likely to drop back to MVFR around 07Z. Inland sites north of KSLE are expected to drop down into MVFR ceilings around 10Z. KSLE will most likely experience a mix of low end VFR to MVFR conditions and KEUG will likely stay VFR through the night. The unstable air mass will increase showers across the area and bring a slight chance of thunderstorms. Turbulent conditions should be expected along the coast starting around 06Z along the coast and 12Z inland.

KPDX AND APPROACHES . VFR conditions will persist through the day and into this evening. Ceilings will drop to MVFR around 10Z ahead of the cold front. Expect ceilings around 2000 ft with light rain. There is a slight chance of thunderstorm development around 12Z behind the cold front. Turbulence is expected during this time. -BPhillips

MARINE. Small craft advisory winds will spread from northwest to southeast as the front moves through the waters. The strongest winds will be in the PZZ270 zone this afternoon through evening. Post-frontal northwest wind gusts to 25 kt can be expected late Fri night through much of Sat. Slight chance of thunderstorms are expected tonight through Saturday afternoon.

Wave heights build to 15 ft Fri evening and then hold in the 12 to 14 ft range Sat. There is an increased risk of sneaker waves with the long period swell Saturday afternoon through Sunday morning. Seas fall below 10 ft late Sun night, but then build again Tuesday. Seas are expected to stay around 10 to 12 ft past Tuesday night. -BPhillips

PQR WATCHES/WARNINGS/ADVISORIES. OR . None. WA . None. PZ . Small Craft Advisory until 4 AM PST Sunday for coastal waters from Cape Shoalwater WA to Florence OR out 60 NM.

Small Craft Advisory from 6 PM this evening to 7 PM PST Saturday 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
TOKW1 - 9440910 - Toke Point, WA 8 mi68 min WSW 16 G 23 47°F 48°F1015 hPa
WPTW1 - 9441102 - Westport, WA 21 mi68 min WSW 25 G 32 47°F 48°F1013.6 hPa
46211 - Grays Harbor, WA (036) 25 mi44 min 48°F12 ft
ASTO3 - 9439040 - Astoria, OR 33 mi56 min SSW 12 G 16 47°F 44°F1016.1 hPa
46243 - Clatsop Spit, OR - 162 37 mi44 min 47°F10 ft
46099 45 mi114 min WSW 21 48°F 47°F1012.3 hPa

Wind History for Toke Point, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Hoquiam, Bowerman Airport, WA22 mi51 minSW 2310.00 miLight Rain and Windy46°F42°F86%1014.2 hPa

Link to 5 minute data for KHQM

Wind History from HQM (wind in knots)
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Last 24hrN3CalmCalmCalmN4NE3N3E3E3E4E4SW7--SW6S13S11S16S14W15SW11SW15S12S19SW23
1 day agoN3N3CalmCalmCalmW5CalmS4E5E3E3CalmCalmS3SW4SW6SW6SW7W11W11W7NW5NW3Calm
2 days agoSW3CalmCalmCalmCalmCalmCalmSE3E3E3CalmE4E4CalmCalmSW5SW4SW7SW8W8W6W6CalmCalm

Tide / Current Tables for Mailboat Slough, Willapa River, Willapa Bay, Washington
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for Grays Harbor Entrance, Washington Current
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Grays Harbor Entrance
Click for Map
Sat -- 01:03 AM PST     1.92 knots Max Flood
Sat -- 04:27 AM PST     -0.00 knots Slack
Sat -- 06:56 AM PST     Sunrise
Sat -- 07:44 AM PST     -2.64 knots Max Ebb
Sat -- 09:45 AM PST     Moonrise
Sat -- 11:15 AM PST     0.00 knots Slack
Sat -- 01:36 PM PST     1.45 knots Max Flood
Sat -- 04:58 PM PST     -0.00 knots Slack
Sat -- 06:01 PM PST     Sunset
Sat -- 07:53 PM PST     -1.94 knots Max Ebb
Sat -- 11:05 PM PST     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.61.91.71.10.4-0.6-1.7-2.5-2.6-2.3-1.5-0.30.81.41.41.10.6-0-0.9-1.7-1.9-1.7-1.1-0.1

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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Portland, OR (0,6,7,8)
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Ground Weather Radar Station Portland, OR
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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.