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Marine Weather and Tides Rainier, OR Version 3.4

What's New / NOTES 10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome. 10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

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Sunrise 7:15AM

Sunset 4:38PM

Saturday November 17, 2018 4:21 PM PST (00:21 UTC)

Moonrise 2:28PM

Moonset 12:52AM

Illumination 75%

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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7 Day Forecast for Marine Location Near Rainier, OR

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Area Discussion for - Portland, OR

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Fxus66 kpqr 172209 afdpqr area forecast discussion national weather service portland or 210 pm pst Sun nov 18 2018 Synopsis Dry weather with mild days and cool nights will continue into early next week as high pressure east of the cascades brings an offshore flow. The wetter pattern takes over Tue night and Wed as a couple of systems coming in off the pacific bring increasing chances for rain late in the week along with lowering snow levels. Short term Tonight through Tuesday... Models set on bringing a dry offshore flow through Tue as the ridge of high pressure just offshore moves slowly east across the region. Surface high pressure over the upper columbia basin is expected to sink south, maintaining a moderately strong offshore flow, with pdx-dls pressure gradients on the order of -8 mb. This is expected to remain a little weaker than the offshore flow earlier this week, and remains capped by a subsidence inversion that lingers below 2k ft, which should restrict winds primarly to the gorge and east portland metro area. Drying with the offshore flow will tend to limit fog potential next few nights and mornings despite mostly clear skies and, away from the gorge, light winds. Expect however to see at least some stratus develop in the central gorge and up into the hood river valley. Temperatures will see a limited diurnal swing in the windy spots, but expect to see continued cool nighttime temps and mild daytime temps elsewhere. Long term Tuesday night through Saturday... As the upper ridge is expected to continue to shift east Tue night and wed, with models indicater a weakening weather system approaching the coast. In general, models suggest some splitting of the system as it slowly approaches, but relatively deep moisture for increasing pops tue night and wed. Similar to a system earlier this week, cannot rule out a low probability of some light freezing rain in the central gorge and hood river valley Wed morning as moisture begins to overrun the cooler low level air trapped under the inversion. A considerably stronger system potenially arrives Thu or Thu night. Timing and strength of the syatem are called into question however as models begin to show increasing variance in solutions. As of the 12z runs, all models look promising for rain Thu or Thu night, with the possibility for strong winds along the coast when the cold front arrives. After post frontal showers Thu night and fri, models diverge sharply in key features Sat with ec at one extreme showing a ridge returning to the coast, and GFS at the other with a deep trough approaching the coast. A good case for blending model pops with some climatology. Aviation Vfr across the area early this afternoon and this is expected to be the rule through Sun morning. An exception could be portions of the central and south willamette valley, which are

wind-sheltered. Local ifr or worse could develop overnight, but confidence is lowering. Dew points are lower in those areas compaerd to 24 hours ago. The offshore low-level flow and east 850 mb flow will help to dry the lowest levels. Thus, will hint at some vis restriction at keug overnight. The offshore flow will produce gusts 35-45 kt at the west end of the columbia gorge. Pdx and approaches...VFR skc through Sun morning. At 21z the kpdx-kttd gradient was -0.2 mb, which is typically sufficient for east wind at the terminal. The kttd-kdls gradient was -5.7 mb, with the latest guidance showing it peaking around -8 mb tonight. Gusts around 25 kt can be expected at the terminal through tonight and up to 35 kt near kttd. Weishaar Marine Have extended the small craft advisory for wind in the northern waters through 12z sun. The primary wind-prone regions will be adjacent to the coastal gaps, but widespread gusts to 25 kt will occur as the offshore flow remains more of a larger-scale event. Wind speeds slowly diminish Sun as the offshore pattern weakens over the waters. Things begin to get interesting beginning Wed night as the pattern becomes more progressive. A strong low looks to take shape in the NE pac 12z thu. The GFS has been hinting at this feature for the past several runs. The latest ECMWF has finally caught up to the gfs. Both operational models spin up a 970-975 mb low center near vancouver island 00z fri. Ramped up the wind speeds Thu and Thu night, but still want remain cautious. Have indicated solid gales Thu afternoon through fri morning, but storm force not out of the question should model trends continue. Conditions settle down Fri night and sat, but the 12z operational model runs have a rather large disparity by then. Seas to hover at 5 to 7 ft through Sun morning, then 4 to 5 ft by Sun afternoon. Seas become more wind driven through early next week. Longer range forecast guidance suggests the potential for 20 ft or greater seas Thu through fri. The ECMWF wave model shows a 33 ft core near buoy 46089 Thu night, with 20-25 ft seas moving into the waters. The enp model is not so aggressive, about 10 ft lower with the max. Have gone rather conservative for now, generally 15-18 ft, but wave heights will likely need a boost if model trends hold. Weishaar Pqr watches warnings advisories Or... None. Wa... None. Pz... Small craft advisory for winds until 4 am pst Sunday for coastal waters from CAPE shoalwater wa to cascade head 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	0 mi	33 min			52°F		1022.1 hPa
ASTO3 - 9439040 - Astoria, OR	44 mi	33 min	NW 1 G 1	55°F	52°F		1021.1 hPa
46243 - Clatsop Spit, OR - 162	63 mi	21 min			53°F	4 ft

Wind History for Longview, WA

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Airport Reports

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Airport	Dist	Age	Wind kt	Visibility	Sky/Weather	Temp	DewPt	Humidity	Pressure
Southwest Washington Regional Airport, WA	3 mi	25 min	NNE 6	10.00 mi	Fair	55°F	42°F	62%	1022.8 hPa
Scappoose Industrial Airpark, OR	23 mi	28 min	NE 5	10.00 mi	Fair	58°F	30°F	35%	1021.4 hPa

Wind History from KLS (wind in knots)

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Tide / Current Tables for Knappa, Knappa Slough, Columbia River, Oregon

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Tide / Current Tables for Vancouver, Columbia River, Washington (dubious accuracy)

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Weather Map and Satellite Images

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GOES 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

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Wind Forecast for Portland, OR (19,4,5,8)

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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 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.