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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 7:02AM

Sunset 5:47PM

Thursday February 21, 2019 2:41 PM PST (22:41 UTC)

Moonrise 8:41PM

Moonset 8:34AM

Illumination 94%

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 211750 afdpqr area forecast discussion national weather service portland or 950 am pst Thu feb 21 2019 Synopsis High pressure will bring dry weather today, albeit still on the chilly side. While much of the region sees partly to mostly sunny skies today, low clouds are expected to persist into early afternoon for the inland valleys south of salem. Meanwhile, a cold front will be approaching from the gulf of alaska. This system will spread valley rain and mountain snow across the forecast area Friday. The front will likely stall over oregon through the weekend, bringing plenty of precipitation to portions of western oregon. Snow levels will lower to the north of the front, potentially approaching the valley floors at times, though this remains uncertain. More certain is the fact that another major dump of snow appears likely for the oregon cascades this weekend through early next week. Short term Today through Saturday... No changes. Previous discussion follows. Weak high pressure will move southward across the forecast area today, bringing a break from the wet weather. Some patches of dense valley fog developed earlier Wednesday night, but these have generally lifted in favor of a low stratus deck. Low clouds will be most persistent south of salem today, especially near eugene. While our current high temperature forecast has eugene reaching the lower to mid 40s today, eugene could easily be stuck in the 30s today if low clouds fail to clear by late afternoon. A similar situation may happen in hood river as well, due to the stratus and cool air that have pooled up in the columbia basin. Otherwise, northerly flow and high pressure should bring partly to mostly sunny skies for most of the forecast area today, with temperatures only slightly below seasonal normals. Our next frontal system is taking shape as a potent shortwave trough moves into the gulf of alaska. The resulting low pressure and cold front will move quickly southeast, spreading precipitation across much of western washington by midday Friday and across northwest oregon Friday afternoon and evening. At this point it appears precipitation will arrive too late to cause a snow or freezing rain threat for low elevations Friday, especially as southerly flow increases through the day. However, if the frontal timing speeds up by 4-6 hours from latest guidance, there could be a brief period of snow or freezing rain in the lowlands Friday morning. Again, this appears unlikely based on latest guidance, with only about a 10 percent chance of significant snow- or ice-related problems for the lowlands Friday. Latest guidance continues to suggest the front will stall somewhere over west-central or southwestern oregon Saturday as it begins to interact with the subtropical branch of the jet stream. If and where this front stalls will have major implications on the forecast Saturday through early next week. Given that most models have some variant of an atmospheric river aimed toward west-central or southwest oregon by late Sat night, suspect the front will stall somewhere near douglas county. This should allow a switch to scattered showers for the north of roughly salem, while areas to the south remain in a steadier valley rain mountain snow pattern. One potential wrinkle in the forecast Friday night and Saturday is shown by the 00z and now 06z gfs, as another slug of jet stream energy sets up right over our cwa. This may enhance shower activity to the north of the front, primarily for our north coastal zones and inland areas pdx metro northward. With a quasi-stationary front to our south, southerly flow ahead of any showers would be limited and there is a chance snow levels could be lower than would normally be expected with the -6 deg c 850 mb temps and onshore flow shown by the 06z nam. We kept snow levels above 1000 feet for the time being, but this certainly bears watching. Due to continued uncertainty in where the heaviest, steadiest QPF is expected, and the fact steady snow is not expected in the cascades until Friday evening, will hold off on issuing any winter highlights to allow the day shift a chance to take a gander at the 12z model cycle. However, confidence is high that some locations in the oregon cascades are going to see another foot or two of snow - or more - by the middle of next week. Weagle Long term Saturday night through Wednesday... No changes. Previous

discussion follows. As mentioned above in the short term discussion, the location where the frontal zone stalls Fri night sat, if it stalls at all, will have significant implications on the forecast through early next week. For now, our forecast is based on the admittedly weak assumption that the frontal zone will stall near douglas county, with the steadiest, heaviest QPF aimed toward lane county and points south. However, there have been model-to-model and run-to-run differences. For example, the 06z GFS shifted the quasi- stationary front about 50-100 miles north of the 00z run, placing it closer to salem. With waves of low pressure travelling along the front and remaining south of the columbia gorge while crossing the cascades, this solution would bring the risk of lowland snow for sw washington, columbia gorge, and perhaps even the portland metro area. This also could bring a hydro threat to areas near and south of the front, which in the particular case of the 06z gfs, would be areas salem southward. However, this is just one of many solutions, and the majority seem to want to stall the front further south... Keeping areas north of salem drier while eugene flirts with low elevation snow and SW oregon deals with most of the hydro concerns. This seems to be one of those situations a blend of models is made for, especially when it comes positioning of the front, so we nudged the forecast toward the national blend. Confidence in any model solution is lower than usual for the early to middle portion of next week, as there is a complex pattern upstream complicated by a potential blocking ridge over alaska and interaction between the polar and subtropical branches of the jet stream. Once the synoptic pattern is settled on by the models, we will have a better idea of the finer details. Weagle Aviation Areas of a low stratus with ifr CIGS have persisted this morning in the willamette valley, and are likely to persist into the early afternoon, especially in the south valley, before dissipating and leaving behindVFR conditions. GenerallyVFR conditions are then expected to persist for most of the area tonight, before low clouds begin to spread back into the northern part of the area Friday morning. The low clouds are likely to lead to MVFR CIGS along the north coastal areas after about 15z, while inland clouds are likely to remainVFR. There is a chance for seeing some low stratus or fog with ifr conditions redeveloping late tonight in the south willamette valley, most likely after 09z and continuing through 16z. Kpdx and approaches... Kpdx is likely to remain on the southern fringes of an ifr cloud deck into the early afternoon, before clouds eventually break up leavingVFR conditions after 19-20z.VFR conditions are then expected to continue through the night and into Friday morning, with a small chance of fog or low stratus redeveloping between 09z and 16z. Marine No changes. Previous discussion follows. Winds and seas continue to ease today. Winds are below advisory criteria, but seas remain around 12 feet this morning and should then drop below 10 feet this evening. Winds will then turn more northeasterly before winds back to the west Friday ahead of the next storm system. This front appears rather weak, but should be strong enough to produce small craft advisory level wind gusts of 25 kt across at least the northern waters Friday. Winds should then be rather tame across the waters over the weekend as a weak surface low pressure develops off the washington coast and drops southward. A low pressure developing along a stalled front somewhere off the northern california or southern oregon coast could impact the waters early next week, but where it will end up remains highly uncertain. Latest model projections generally keep it south, but if it tracks more directly into our waters or north of us then winds and seas will almost certainly be higher. Mh neuman Pqr watches warnings advisories Or... None. Wa... None. Pz... Small craft advisory for hazardous seas until 10 pm pst this evening for coastal waters from CAPE shoalwater wa to florence or out 60 nm. Small craft advisory for rough columbia river bar from 4 pm this afternoon to 8 pm pst this evening. 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	60 min			41°F		1019.7 hPa
ASTO3 - 9439040 - Astoria, OR	44 mi	60 min	W 4.1 G 5.1	41°F	41°F		1019.2 hPa
46243 - Clatsop Spit, OR - 162	63 mi	42 min			48°F	7 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	46 min	WSW 5	10.00 mi	Fair	48°F	30°F	50%	1020.2 hPa
Scappoose Industrial Airpark, OR	23 mi	49 min	SE 5	10.00 mi	Fair	47°F	28°F	50%	1019.6 hPa

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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 (17,4,5,8)

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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.