Friday, September25, 2020
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Marine Weather and Tides
Seaside, OR

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 7:02AMSunset 7:04PM Friday September 25, 2020 5:08 PM PDT (00:08 UTC) Moonrise 3:40PMMoonset 12:00AM Illumination 63% Phase: Waxing Gibbous; Moon at 9 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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PZZ250 Coastal Waters From Cape Shoalwater Wa To Cascade Head Or Out 10 Nm- 207 Pm Pdt Fri Sep 25 2020
.small craft advisory in effect through Saturday morning...
Tonight..SW wind 5 to 10 kt with gusts to 15 kt. Wind waves sw 2 ft at 4 seconds. W swell 11 ft at 12 seconds. Chance of showers.
Sat..SW wind 5 to 10 kt with gusts to 15 kt. Wind waves sw 2 ft at 4 seconds. W swell 9 ft at 11 seconds. Showers likely.
Sat night..W wind 5 to 10 kt with gusts to 15 kt, becoming S after midnight. Wind waves sw 1 ft at 4 seconds. W swell 7 ft at 10 seconds.
Sun..E wind to 5 kt, becoming ne in the afternoon. Wind waves ne 1 ft at 4 seconds. W swell 6 ft at 10 seconds. Patchy fog.
Sun night..NE wind 10 to 15 kt. Gusts to 20 kt, becoming 15 kt after midnight. Wind waves ne 2 ft at 4 seconds. W swell 6 ft at 10 seconds.
Mon..NE wind 10 to 15 kt with gusts to 20 kt. Wind waves 3 ft. W swell 5 ft.
Mon night..NE wind 10 to 15 kt with gusts to 20 kt. Wind waves 3 ft. W swell 10 ft.
Tue..E wind 5 to 10 kt. Wind waves 2 ft. W swell 9 ft.
Wed..NE wind 5 to 10 kt. Wind waves 1 ft. W swell 6 ft.
PZZ200 207 Pm Pdt Fri Sep 25 2020
Synopsis for the southern washington and northern oregon coast.. Winds will weaken over night as the front has passed over the waters. Seas will stay elevated through Saturday morning. High pressure builds on Saturday and strengthens on Sunday, bringing weaker winds and subsiding seas.


7 Day Forecast for Marine Location Near Seaside, OR
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location: 46, -123.92     debug


Area Discussion for - Portland, OR
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FXUS66 KPQR 252114 AFDPQR

Area Forecast Discussion National Weather Service Portland OR 215 PM PDT Fri Sep 25 2020

SYNOPSIS. The cold front that brought rain to the region Friday will move off to the east Friday night. Behind the front, showers will persist through Saturday. There will be a change to a drier and warmer weather pattern Sunday and lasting through next week as a light offshore flow develops.

SHORT TERM. Tonight through Monday . Surface observations showed a cold front had moved onto the coast early Friday afternoon. At its current rate of movement the front should cross most of the forecast area during the afternoon hours, which fits well with models. The band of subtropical moisture ahead of the front will shift to the south and east this evening as well. Radar already showed precipitation becoming more showery early Friday afternoon over coastal areas. Models show low level onshore flow to weaken fairly quickly tonight and Saturday, but forecast soundings indicate low levels through Saturday to remain moist and unstable. This will keep a threat of showers going over most of the area through Saturday, with the best chances over the orographically favored terrain in the light westerly flow.

Saturday night and Sunday models are consistent in building an upper ridge just off the coast, with an inverted surface trough building north up the Oregon coast. A light flow initially with recently moistened ground should be favorable for some valley fog Sunday morning. Offshore flow then strengthens Sunday and Sunday night, likely reaching its peak by Monday morning, but the overall peak gradients suggest wind gusts likely on the order of just 30 mph through the west Gorge and nearby Cascade foothills. The offshore flow will initiate a period of drier continental air moving in, with temperatures warming back above normal by Monday.

LONG TERM. Monday night through Friday . Models in general agreement showing an upper ridge near the coast early next week, then slowly shifting the axis inland through the course of the week. Initially this will keep a surface trough along the coast through Tuesday, for an offshore flow that will extend to the coast. During the latter half of the week as the ridge axis shifts inland, models generally agree on the surface trough shifting inland, at least during the afternoon and evening hours. This will allow some marine influence to return to the coastal areas. Elsehwere a generally light continuation of offshore flow will allow for some drying through the week with daytime temperatures running a little above normal while nighttime lows run near normal in the valleys. The easterly offshore flow will likely bring whatever wildfire smoke is available from over the Cascades and just east of the Cascades westward into the region, assuming the fires are still generating smoke.

AVIATION. The cold front has moved onshore and winds along the coast are weakening. Conditions will improve to a mix of VFR to MVFR along the northern coast and a mix of MVFR to IFR along the central coast. Inland sites will continue to see gusty winds ahead of the front between 25-30 kt. The front is still expected to move east of the Cascade Range by 03Z.

Conditions will improve inland to a mix of VFR to MVFR going into this evening as scattered showers and broken ceilings around 020 move through the area. Potential for LLWS until 02Z across the Columbia River Gorge and northern Cascades. Expect primarily speed shear rather than directional shear around 020 ft between 40-50 kt. Winds will ease but gusts near 15 kt are possible through 03Z.

Patchy fog in the southern Willamette Valley as well as along the central coast is expected after 12Z but should improve by 17Z Saturday. Winds will progressively turn westerly and weaken to below 10 kt. A second round of showers will move across the area after 12-14Z Saturday.

Refer to http://weather.gov/zse for detailed regional aviation weather and hazard information.

KPDX AND APPROACHES . VFR will be the dominant trend going into tonight but intermittent periods of MVFR should be expected as showers move through the area. LLWS is possible through the Gorge and northern Cascade Range through 02Z. Showers and potential for MVFR ceilings return around 14Z Saturday. -BPhillips

MARINE. Winds are dropping off quickly across the waters but waters will continue to stay hazardous to small crafts through Saturday afternoon. The westerly swell currently around 16 ft at 15 sec will dissipate down to 10 ft, 11 sec by Saturday morning. Winds will turn to a more north to northeasterly pattern going into the weekend as high pressure builds over the NE Pacific.

Expect light winds and seas to stay below 10 ft through Monday afternoon. Potential for seas to build to 10 ft Monday night with an approaching westerly swell but conditions are marginal as of now. -BPhillips

PQR WATCHES/WARNINGS/ADVISORIES. OR . None. WA . None. PZ . Small Craft Advisory until 11 AM PDT Saturday for coastal waters from Cape Shoalwater WA to Florence OR out 60 NM.

Small Craft Advisory until 5 PM PDT Saturday for Columbia River Bar.



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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ASTO3 - 9439040 - Astoria, OR 16 mi69 min WSW 6 G 11 62°F 64°F1012.3 hPa (+1.9)
46243 - Clatsop Spit, OR - 162 19 mi73 min 56°F10 ft
TLBO3 - 9437540 - Garibaldi, Tillamook Bay, OR 31 mi69 min 57°F1013.9 hPa (+1.2)
46029 - COL RIVER BAR - 20NM West of Columbia River Mouth 32 mi49 min 7.8 G 14 61°F1012.6 hPa
46248 - Astoria Canyon, OR (179) 39 mi73 min 62°F12 ft
TOKW1 - 9440910 - Toke Point, WA 49 mi69 min WSW 8 G 11 61°F 61°F1011.9 hPa (+2.1)

Wind History for Astoria, OR
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Astoria, Astoria Regional Airport, OR11 mi14 minSW 510.00 miOvercast60°F55°F84%1012.5 hPa

Link to 5 minute data for KAST

Wind History from AST (wind in knots)
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2 days agoSW6E6CalmSE3CalmCalmSE3SE3S11
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Tide / Current Tables for Seaside, 12th Avenue bridge, Necanicum River, Oregon
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Seaside
Click for Map
Fri -- 12:23 AM PDT     Moonset
Fri -- 03:30 AM PDT     0.07 feet Low Tide
Fri -- 07:07 AM PDT     Sunrise
Fri -- 09:13 AM PDT     4.38 feet High Tide
Fri -- 03:36 PM PDT     1.30 feet Low Tide
Fri -- 04:39 PM PDT     Moonrise
Fri -- 07:06 PM PDT     Sunset
Fri -- 08:04 PM PDT     5.15 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.91.10.50.10.20.81.93.144.44.33.83.12.41.71.41.42.13.44.65.154.63.9

Tide / Current Tables for Astoria (Youngs Bay), Columbia River, Oregon
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Astoria (Youngs Bay)
Click for Map
Fri -- 12:22 AM PDT     Moonset
Fri -- 02:59 AM PDT     0.03 feet Low Tide
Fri -- 07:06 AM PDT     Sunrise
Fri -- 09:35 AM PDT     6.24 feet High Tide
Fri -- 02:50 PM PDT     3.09 feet Low Tide
Fri -- 04:39 PM PDT     Moonrise
Fri -- 07:05 PM PDT     Sunset
Fri -- 08:46 PM PDT     7.30 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.61.30.400.41.32.64.15.36.16.25.74.843.33.13.54.45.56.47.17.36.85.7

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
Ground Weather Radar Station Portland, OR
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