Tuesday, May11, 2021
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Marine Weather and Tides
Portland, OR

Version 3.4
NOTICE
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 5:42AMSunset 8:31PM Tuesday May 11, 2021 4:09 AM PDT (11:09 UTC) Moonrise 4:54AMMoonset 7:40PM Illumination 0% Phase: New Moon; Moon at 29 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- 251 Am Pdt Tue May 11 2021
In the main channel.. - general seas...4 to 5 ft through Wednesday. - first ebb...strong ebb around 515 am Tuesday, with seas near 7 ft. - second ebb...around 545 pm Tuesday, with seas near 6 ft. - third ebb...strong ebb around 600 am Wednesday, with seas near 7 ft.
PZZ200 251 Am Pdt Tue May 11 2021
Synopsis for the southern washington and northern oregon coast.. Little to no change expected through Friday as high pressure will remain offshore. This will result in a surface thermal trough will remaining over the south or coast into northwest ca. This will result in a typical summer like patter of north winds over the coastal waters, which will be strongest during the afternoon and evening hours each day.


7 Day Forecast for Marine Location Near Portland, OR
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location: 45.53, -122.68     debug


Area Discussion for - Portland, OR
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FXUS66 KPQR 111005 AFDPQR

Area Forecast Discussion National Weather Service Portland OR 252 AM PDT Tue May 11 2021

SYNOPSIS. Upper level high pressure will result in dry weather and above average temperatures for much of the next week. The next significant storm system appears most likely to arrive early next week.

SHORT TERM. Today through Thursday . Models are in good agreement a low amplitude shortwave ridge will traverse the Pacific Northwest today before flattening Wednesday ahead of a weak shortwave trough dropping southeastward across the region late Thursday. The end result is that the region will remain dry, though. Coastal high temperatures should remain near 60F and inland high temperatures should climb well into the 70s through Thursday with a few spots in the Willamette Valley topping out near 80F Wednesday. The low level flow does back a little Wednesday into Thursday so morning marine clouds should become more prevalent along the coast and lower Columbia River during this time. /Neuman

LONG TERM. Thursday night through Tuesday . Models and their ensembles are in good agreement the aforementioned shortwave trough will dive southeastward into the Desert SW late Thursday through Saturday. This will result in a sharper shortwave ridge building back across the Pacific Northwest Saturday into Sunday. This will keep the area dry with high temperatures topping out in the 70s to low 80s for inland locations. Models and their ensembles do loosely agree another shortwave trough with more cold air aloft and better dynamics will approach the region early next week. There are still major differences in the timing and amplitude of the shortwave trough, though. In addition, approximately 20% of the ensembles suggest the area will remain dominated by a shortwave ridge through early next week. Given all of this, trying to time out when rain will fall . i.e. Sunday night, Monday, Monday night, Tuesday, etc . is still a low confidence forecast at best at this point so PoPs and temperatures remain in line with NBM guidance. /Neuman

AVIATION. High pressure aloft continues to dominate across the region resulting in northwesterly flow at the surface. Moist onshore flow, with temp and dew points getting closer, will likely result in some MVFR conditions along the coast developing around 12Z Tuesday. Elsewhere, the likelihood of MVFR or lower conditions developing is much lower, but can't rule out the possibility of some patchy cigs developing along the foothills of the Cascades and Coast range. All areas will return to VFR after 18Z Tuesday through the remainder of the period. Possibility of locally breezy northerly winds between 18Z Tuesday and 06Z Wednesday across the region, but should dissipate as night nears.

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

KPDX AND APPROACHES . VFR conditions prevailing, with a low probability of some MVFR conditions developing after 12Z Tuesday. VFR conditions expected to return by 18Z Tuesday. Locally breezy winds possible from 18Z Tuesday through 06Z Wednesday but should not exceed 20kt. /42

MARINE. Minimal change expected in overall conditions through Friday as high pressure will continue to be the dominant feature over the coastal waters. At the same time, a surface thermally induced trough will persist from northwest CA to the south OR coast, which will cause a prolonged period of northerly winds over the waters. Expect winds to be strongest during the afternoon and evening hours. Have extended the current Small Craft Advisory for PZZ255 & PZZ275 through Wednesday morning. Have also issued a Small Craft Advisory for PZZ270 & PZZ250 starting this afternoon through the evening hours, with the highest gusts south of Tillamook Head. In addition to the winds, seas will be fairly choppy of the central coastal waters next couple of days.

PQR WATCHES/WARNINGS/ADVISORIES. OR . None. WA . None. PZ . Small Craft Advisory from 11 AM this morning to 11 PM PDT this evening for coastal waters from Cape Shoalwater WA to Cascade Head OR out 60 NM.

Small Craft Advisory until 8 AM PDT Wednesday for coastal waters from Cascade Head OR to Florence OR out 60 NM.



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


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
LOPW1 - 9440422 - Longview, WA 42 mi51 min 56°F1023.4 hPa
TLBO3 - 9437540 - Garibaldi, Tillamook Bay, OR 66 mi51 min 1023.9 hPa
ASTO3 - 9439040 - Astoria, OR 74 mi51 min E 2.9 G 5.1 48°F 58°F1023.7 hPa

Wind History for Longview, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Pearson Airfield, WA6 mi16 minNNW 510.00 miFair50°F41°F71%1022.5 hPa
Portland, Portland International Airport, OR7 mi16 minN 010.00 miFair50°F43°F77%1022.5 hPa
Portland-Hillsboro Airport, OR14 mi16 minN 010.00 miFair45°F40°F83%1022.3 hPa
Portland, Portland-Troutdale Airport, OR15 mi16 minN 010.00 miFair47°F42°F83%1022.4 hPa
Scappoose Industrial Airpark, OR19 mi16 minNW 510.00 miFair50°F40°F68%1022.3 hPa
Aurora State Airport, OR20 mi16 minN 010.00 miFair48°F41°F77%1022.6 hPa

Link to 5 minute data for KVUO

Wind History from VUO (wind in knots)
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1 day agoNW3NW3NW3W4NW6NW5W6CalmW8--W8SW9W8W12W11NW9NW9
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2 days agoCalmCalmCalmCalmSE3Calm34W8SW4W43SW4W5NW5N3NW5N4N4N3NW3NW43Calm

Tide / Current Tables for Vancouver, Columbia River, Washington (dubious accuracy)
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Vancouver
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Tue -- 03:05 AM PDT     0.34 feet Low Tide
Tue -- 05:44 AM PDT     Sunrise
Tue -- 05:53 AM PDT     Moonrise
Tue -- 07:29 AM PDT     1.79 feet High Tide
Tue -- 12:01 PM PDT     New Moon
Tue -- 03:41 PM PDT     -0.20 feet Low Tide
Tue -- 08:19 PM PDT     1.35 feet High Tide
Tue -- 08:30 PM PDT     Sunset
Tue -- 08:40 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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10.80.50.30.50.91.41.71.71.51.210.90.60.2-0.1-0.20.10.61.11.31.31.21.1

Tide / Current Tables for Tillamook, Hoquarten Slough, Oregon
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Tillamook
Click for Map
Tue -- 01:34 AM PDT     6.21 feet High Tide
Tue -- 05:49 AM PDT     Sunrise
Tue -- 05:58 AM PDT     Moonrise
Tue -- 09:46 AM PDT     -0.25 feet Low Tide
Tue -- 12:01 PM PDT     New Moon
Tue -- 02:51 PM PDT     4.95 feet High Tide
Tue -- 08:34 PM PDT     Sunset
Tue -- 08:45 PM PDT     Moonset
Tue -- 09:27 PM PDT     1.31 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.866.25.84.93.82.61.40.5-0.1-0.20.51.93.54.64.94.74.13.22.41.71.41.52.5

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NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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