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Marine Weather and Tides Cedar Mill, OR Version 3.4

What's New / NOTES 5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive. 5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

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Sunrise 5:21AM

Sunset 9:06PM

Thursday June 22, 2017 11:16 AM PDT (18:16 UTC)

Moonrise 3:26AM

Moonset 6:30PM

Illumination 2%

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.

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Marine Forecasts

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PZZ210 Columbia River Bar- 857 Am Pdt Thu Jun 22 2017 In the main channel..Combined seas 5 ft tonight through tonight. However, seas will temporarily build to near 8 ft during the ebb around 415 pm this afternoon and to near 8 feet with breakers likely during the very strong ebb around 445 am Friday morning.

PZZ200 857 Am Pdt Thu Jun 22 2017 Synopsis for southern washington and northern oregon coast.. High pressure over the northeast pacific and thermal low pressure over the northern california and southern oregon coastal waters holds through Saturday. Weak low pressure will impact the waters Sunday and Monday.

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7 Day Forecast for Marine Location Near Cedar Mill, OR

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Area Discussion for - Portland, OR

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Fxus66 kpqr 221617 afdpqr area forecast discussion national weather service portland or 916 am pdt Thu jun 22 2017 Synopsis High pressure aloft over the forecast area will strengthen through the weekend. A thermally-induced surface trough and resultant offshore low-level flow will result in hot temperatures Friday through the weekend. A southwest marine surge occurs along the central coast Saturday night and Sunday. A deeper marine push occurs Monday for much cooler temperatures inland. Strong onshore flow continues Tuesday through mid-week, followed by a gradual warming trend late in the week. Short term Thursday through Saturday... No major changes to the fcst this morning. Visible satellite shows some patchy clouds over the coastal waters, but otherwise skies are clear across the cwa. The 12z ksle sounding came in with an 850 mb temp of around 12.5 c, compared to 10 c yesterday afternoon, which confirms that the air mass is continuing to gradually warm. Expect afternoon highs to reach into the upper 70s to low 80s over the interior lowlands today, with 60s at the coast. There will also again be breezy NW winds developing later this afternoon and evening. So we will have one more pleasant and seasonal day before a significant hot spell begins Fri and continues through the weekend. A strong upper level ridge in excess of 590 dm anchored over the ne pac will begin to shift closer to the coast fri, leading to a steady warming of the air mass over the region. A thermally-induced surface trough will strengthen along the coast tonight and expect subsidence inversions to become more pronounced in the oregon coast range and all cascades and foothills areas. 850 mb temps Fri are fcst to climb to near or slightly above 20c. Offshore low-level flow develops fri as well, which will help to boost temps through downslope compression. Even the coast should get into the act fri, with 75 to 80 possible, especially along the N oregon and S washington coast. The thermally-induced surface trough settles over the coast, oregon coast range and SW washington willapa hills Fri night and sat. Models in general agreement showing 850 mb temps of 22 to 24 c by 00z sun. Coupled with continued offshore flow, inland valley temps expected to be in the mid to upper 90s. There is also the potential for places like kast and ktmk to get close to 90 deg sat. The latest NAM run hints at a south flow reversal along the south coast late sat afternoon, possibly reaching florence by 00z sun. Pyle weishaar Long term Saturday night through Thursday... The NAM shows the south coastal surge moving up the coastline Sat night, getting close to ktmk by 12z sun. Some of this marine air will likely seep into the central oregon coast range valleys. However, light offshore low-level flow continues elsewhere, with strong subsidence inversions remaining in place for the cascades. The operational GFS and ECMWF show 850 mb temps Sun peaking around 24c. Went a touch lower Sun inland compared

to sat. The surface thermal trough may remain over the interior valleys and near the cascades Sun so MAX temps could end up slightly warmer than forecast. The ECMWF hints at some mid-level moisture spreading north from n. Cal Sun afternoon. Also, the ECMWF has a short-wave moving over the top of the 500 mb ridge Sun afternoon, lowering heights just a bit. Cooling occurs Mon as a short-wave reaches SW oregon and another disturbance moves into southern b.C.. The ECMWF would suggest the potential for elevated convection for the cascades and possibly foothills Mon afternoon, followed by a much deeper marine surge mon night. The deep marine layer holds Tue and Wed with daytime temps a little below normal. High pressure strengthens late in the week for a return to seasonal conditions. Weishaar Aviation Vfr conditions through the period. North winds will increase in the afternoon in most locations, but will be especially gusty (25 to 30 kt) along the coast south of ktmk. Kpdx and approaches...VFR with clear skies today and tonight. North winds will increase this afternoon with 20 to 25 kt gusts possible through the early evening. ~tj bentley Marine There will be persistent north winds over the waters through Saturday due to high pressure over the NE pacific and thermal low pressure over NW california and S oregon. The winds will be strongest south of cascade head, with frequent gusts of 25 to 30 kt. Winds within 10 nm of the coast will weaken during the nights, and become offshore through the early mornings. The winds will build steep and choppy seas that will reach heights of 8 to 10 feet south of cascade head at times. Weak low pressure develops across the waters Saturday night and holds through Monday. This will result in a southerly wind reversal for the waters mainly within 10 nm. ~tj Pqr watches warnings advisories Or... None. Wa... None. Pz... Small craft advisory for winds until 5 am pdt Saturday for waters from CAPE shoalwater wa to florence or from 10 to 60 nm. Small craft advisory for winds until 11 pm pdt Friday for coastal waters from CAPE shoalwater wa to florence or out 10 nm. Small craft advisory for hazardous seas until midnight pdt tonight for coastal waters from cascade head or to florence or out 60 nm. Interact with us via social media:

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Weather Reporting Stations

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Stations	Dist	Age	Wind	Air Temp	Water Temp	Waves	Pressure	DewPt
LOPW1 - 9440422 - Longview, WA	38 mi	47 min			61°F		1024.6 hPa
TLBO3 - 9437540 - Garibaldi, Tillamook Bay, OR	61 mi	47 min			52°F		1023.4 hPa
ASTO3 - 9439040 - Astoria, OR	68 mi	47 min	SW 1 G 1.9	61°F	64°F		1024.7 hPa

Wind History for Longview, WA

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Last 24hr

1 day ago

2 days ago

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Airport Reports

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Airport	Dist	Age	Wind kt	Visibility	Sky/Weather	Temp	DewPt	Humidity	Pressure
Pearson Airfield, WA	6 mi	24 min	N 4	10.00 mi	Fair	68°F	48°F	51%	1023.2 hPa
Portland, Portland International Airport, OR	9 mi	24 min	W 8	10.00 mi	Fair	66°F	46°F	49%	1023.2 hPa
Portland-Hillsboro Airport, OR	10 mi	24 min	E 5	10.00 mi	Fair	70°F	48°F	46%	1023 hPa
Scappoose Industrial Airpark, OR	14 mi	24 min	N 11 G 16	10.00 mi	Fair	71°F	46°F	42%	1023.2 hPa
Portland, Portland-Troutdale Airport, OR	20 mi	24 min	W 4	10.00 mi	Fair	68°F	50°F	53%	1023.1 hPa
Aurora State Airport, OR	23 mi	24 min	N 10	10.00 mi	Fair	70°F	46°F	44%	1023.2 hPa

Wind History from VUO (wind in knots)

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Tide / Current Tables for St. Johns, Willamette River, Oregon - IGNORE HEIGHTS

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St. Johns Click for MapNote: The Columbia River is subject to annual freshets. Short range predictions are available at local river forecast centers. The data for stations above Harrington Point apply only during low river stages. There is a tidal influence along most of the Thu -- 01:10 AM PDT     2.03 feet Low Tide Thu -- 04:25 AM PDT     Moonrise Thu -- 04:59 AM PDT     9.52 feet High Tide Thu -- 05:22 AM PDT     Sunrise Thu -- 02:24 PM PDT     -1.09 feet Low Tide Thu -- 06:23 PM PDT     7.31 feet High Tide Thu -- 07:29 PM PDT     Moonset Thu -- 09:04 PM PDT     Sunset Tide / Current data from XTide NOT FOR NAVIGATION

12am	1am	2am	3am	4am	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm	10pm	11pm
2.3	2	2.8	5.5	8.3	9.5	9.2	8.3	6.8	5.1	3.4	1.8	0.5	-0.5	-1	-0.6	1.9	5	7.1	7.2	6.7	5.8	4.8	3.8

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Tide / Current Tables for Vancouver, Washington - IGNORE HEIGHTS

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Vancouver Click for MapNote: The Columbia River is subject to annual freshets. Short range predictions are available at local river forecast centers. The data for stations above Harrington Point apply only during low river stages. There is a tidal influence along most of the Thu -- 01:22 AM PDT     2.03 feet Low Tide Thu -- 04:25 AM PDT     Moonrise Thu -- 05:21 AM PDT     Sunrise Thu -- 05:36 AM PDT     9.52 feet High Tide Thu -- 02:36 PM PDT     -1.09 feet Low Tide Thu -- 07:00 PM PDT     7.31 feet High Tide Thu -- 07:29 PM PDT     Moonset Thu -- 09:03 PM PDT     Sunset Tide / Current data from XTide NOT FOR NAVIGATION

12am	1am	2am	3am	4am	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm	10pm	11pm
2.4	2.1	2.4	4.4	7.1	9.1	9.5	8.9	7.6	5.9	4.1	2.4	0.9	-0.3	-1	-0.9	0.9	3.7	6.3	7.3	7	6.3	5.3	4.2

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Weather Map and Satellite Images

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Weather Map

IR Satellite Image from GEOS GOES Local Image of PacificNorthwest    EDIT

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Wind Forecast for Portland, OR (14,3,4,5)

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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 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.