Saturday, May25, 2019 L-36.com


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.

Sunrise 5:27AMSunset 8:50PM Saturday May 25, 2019 4:44 AM PDT (11:44 UTC) Moonrise 12:49AMMoonset 10:38AM Illumination 61% Phase: Waning Gibbous; Moon at 21 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- 321 Am Pdt Sat May 25 2019
In the main channel.. - general seas...6 to 8 ft today, easing to 4 to 6 ft tonight into Sunday. - first ebb...around 10 am today. Seas 7 to 9 ft. - second ebb...around 1115 pm tonight. Seas 6 to 8 ft. - third ebb...around 11 am Sunday. Seas 5 to 7 ft.
PZZ200 321 Am Pdt Sat May 25 2019
Synopsis for the southern washington and northern oregon coast.. An upper level low will move south from vancouver island and cross the pac nw coastal waters today. Weak high pressure will then linger over the waters through at least Tue.


7 Day Forecast for Marine Location Near Rainier, OR
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location: 46.1, -122.95     debug


Area Discussion for - Portland, OR
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Fxus66 kpqr 250957
afdpqr
area forecast discussion
weather service portland or
255 am pdt Sat may 25 2019

Synopsis Cool and showery weather contiues today as another upper
level low moves south through the pac nw. Snow levels will be down
to the higher cascades passes today, although no significant
accumulations are expected. Warmer weather is expected Sun and mon
as ridging over the NE pac builds into the region. However, there
will be potential for cascades thunderstorms on Sunday and Monday.

Short term Today through Monday... Satellite images show Friday's
upper low dropping down into northeast california early this
morning, but with another rapidly moving down the british columbia
coast. Surface observations showed a few sprinkles across the
region, but overall showers showing up on radar were almost non-
existent. With continued low level onshore flow today, low levels
will remain moist, but model time-height cross sections of moisture
show deeper moisture arriving this afternoon with the next upper
low. With deep moisture showing up, expect showers to become more
widespread during the day today, and also likely heavier than most
of those experienced yesterday. Onshore flow ahead of the low will
enhance the precipitation later today over west facing terrain,
especially on and near the west slopes of the cascades. Similar to
yesterday, temperatures will be below normal with the clouds,
onshore flow and cool pool aloft moving across late in the day.

As the low continues to drop south down the californai coast
tonight, the main chances for showers will also sink south out of
the region. By Sunday models consistent in showing the low level
flow becoming more northerly and 850 mb temperatures quickly
rebounding back up to around 8c by 00z Monday. This should result in
a mostly dry day for the western part of the forecast area, with
valley temperatures climbing back into the 70s. A northeast mid
level flow and instability moving in from east of the cascades will
bring a chance for showers and thunderstorms initially to the
cascades. The northeast steering flow however suggests some threat
for showers and thunderstorms to drift west into the valleys late in
the afternoon to evening.

Monday present a similar situation to Sunday, but with the upper low
shifting east to utah and arizona. This effectively turns the mid
level flow more northerly over the forecast area. Some instability
remains over the cascades Monday, keeping a chance for showers and
thunderstorms going, but the steering flow makes it less likely to
see the showers drift west of the cascades. Perhaps a couple degrees
of warming can be expected Monday, but a continuation of low level
onshore flow is likely to hold valley temperatures in the 70s again.

Long term Monday night through Friday... No change. Previous
discussion follows. The broad upper-level ridge that has been
positioned off the west coast finally shifts inland into british
columbia on Monday. Because it will be so far north, this will allow
for a shortwave trough to slide just to our south on Monday night
into Tuesday. This brings showers and perhaps a few evening
thunderstorms to the cascades. Chance for showers comes to an end
after midnight Monday night. Another shortwave passes to our south
on Tuesday, but there is only a slight chance of some wrap-around
precipitation to clip our lane county cascades Tuesday afternoon and
evening. During the latter half of next week the forecast becomes
more difficult as the models don't have a great handle on the
pattern until Friday when there's a fairly good signal that a zonal
flow pattern is setting up for next weekend. -mccoy &&

Aviation As of 0930z, the forecast area was in between
weather systems with generalVFR conditions inland and MVFR along
the coast. Expect this to persist through about 15z, with
occasional ifr in periods of drizzle along the coast. Next low
pressure system moving in from the north will increase rain or
shower coverage across the forecast area by midday, continuing
through the afternoon. During this time CIGS will likely lower to
MVFR inland as rain becomes steadier. Coastal areas may see more
of a showery mode to precipitation, as they will be closer to
the cold pool aloft and thus less stable. Expect rain to slowly
taper off from north to south overnight, but MVFR is likely to
linger for most of the forecast area through at least 06z this
evening.

Kpdx and approaches...VFR CIGS in the 4000-5000 ft range early
this morning are expected to gradually deteriorate to MVFR in
increasing -ra by afternoon, with fairly steady -ra possible for
the afternoon hours. Precipitation is expected to slowly taper
off from north to south this evening, though MVFR CIGS are likely
to persist. Weagle

Marine Seas appear to have reached their peak across most of
our waters overnight, with 10 to 13 ft seas due to fresh swell
from our burst of n-nw wind Friday and Fri night. Winds have
been gradually easing and backing overnight; expect this trend to
continue as low pressure coming from the north displaces the
stronger northerly gradients into the offshore waters today.

Still, our outermost waters... About 40-50 nm or more offshore...

may continue to experience gusts 25-30 kt through this afternoon.

The proximity of the stronger n-nw winds will likely keep seas
above 10 ft into this evening for our outermost waters, while the
lack of windwave contribution allows seas closer to the coast to
gradually drop below 10 ft today.

A surface thermal trough along the south oregon coast is
forecast to strengthen sun, which will result in 20-25 kt gusts
for pzz275 and possibly into pzz255 Sun afternoon. Weaker
gradients Sun night through early next week will generally
result in wind speeds 15 kt or less. Seas eventually fall to
around 5 ft Sun night or Mon as winds remain moderate Monday and
Tuesday. Weagle weishaar

Pqr watches warnings advisories
Or... None.

Wa... None.

Pz... Small craft advisory for winds until 4 pm pdt this afternoon
for waters from CAPE shoalwater wa to florence or from 10
to 60 nm.

Small craft advisory for hazardous seas until 8 pm pdt this
evening for waters from CAPE shoalwater wa to cascade head
or from 10 to 60 nm.

Small craft advisory for hazardous seas until 5 pm pdt this
afternoon for coastal waters from CAPE shoalwater wa to
florence or out 10 nm.

Small craft advisory for hazardous seas until 11 pm pdt this
evening for waters from cascade head to florence or from
10 to 60 nm.

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
LOPW1 - 9440422 - Longview, WA 0 mi45 min 58°F1016.3 hPa (-0.4)
ASTO3 - 9439040 - Astoria, OR 44 mi45 min SSE 5.1 G 7 51°F 58°F1015.2 hPa (-0.4)
46243 - Clatsop Spit, OR - 162 63 mi45 min 56°F10 ft

Wind History for Longview, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Southwest Washington Regional Airport, WA3 mi49 minN 010.00 miOvercast52°F48°F86%1017 hPa
Scappoose Industrial Airpark, OR23 mi52 minN 010.00 miOvercast51°F46°F83%1015.9 hPa

Wind History from KLS (wind in knots)
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Last 24hrS3--S3S6SE5445W8
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W55NW33CalmS3S3CalmSE4S4Calm
1 day ago5NW4NW5N4NW65NW566NW7NW12W8NW7NW7NW8NW8W6NW7NW6W4NW7W7W5W5
2 days agoN4NW3N34NW5W63NW8W11W8
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NW6W5CalmNW3NW5NW46NW6NW5

Tide / Current Tables for Knappa, Knappa Slough, Columbia River, Oregon
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Knappa
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Sat -- 01:36 AM PDT     2.93 feet Low Tide
Sat -- 01:51 AM PDT     Moonrise
Sat -- 05:31 AM PDT     Sunrise
Sat -- 06:29 AM PDT     6.82 feet High Tide
Sat -- 11:41 AM PDT     Moonset
Sat -- 02:13 PM PDT     0.55 feet Low Tide
Sat -- 08:34 PM PDT     6.57 feet High Tide
Sat -- 08:51 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.5333.74.96.16.76.86.25.242.71.70.90.60.81.734.55.76.46.565.2

Tide / Current Tables for Vancouver, Columbia River, Washington (dubious accuracy)
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Vancouver
Click for Map
Sat -- 12:36 AM PDT     1.33 feet High Tide
Sat -- 01:46 AM PDT     Moonrise
Sat -- 03:31 AM PDT     1.00 feet Low Tide
Sat -- 05:29 AM PDT     1.11 feet High Tide
Sat -- 05:29 AM PDT     Sunrise
Sat -- 08:31 AM PDT     0.70 feet Low Tide
Sat -- 11:39 AM PDT     Moonset
Sat -- 12:16 PM PDT     1.59 feet High Tide
Sat -- 04:45 PM PDT     0.58 feet Low Tide
Sat -- 05:33 PM PDT     0.59 feet High Tide
Sat -- 08:45 PM PDT     Sunset
Sat -- 08:59 PM PDT     0.09 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.31.31.2111.11.10.90.70.711.41.61.51.20.80.60.60.60.40.20.10.20.6

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.
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Wind Forecast for Portland, OR (7,2,3,4)
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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.