Sunday, May26, 2019 L-36.com


Marine Weather and Tides
Onalaska, WA

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 5:24AMSunset 8:53PM Sunday May 26, 2019 2:22 PM PDT (21:22 UTC) Moonrise 1:18AMMoonset 11:38AM Illumination 46% Phase: Third Quarter Moon; Moon at 23 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- 301 Am Pdt Sun May 26 2019
In the main channel.. - general seas...4 to 6 feet today, lowering to 3 to 5 feet tonight and Monday. - first ebb...around 11 am Sunday. Seas 5 to 7 feet. - second ebb...around 1215 am Monday. Seas around 6 feet. - third ebb...around 1215 pm Monday. Seas around 5 feet.
PZZ200 301 Am Pdt Sun May 26 2019
Synopsis for the southern washington and northern oregon coast.. High pressure will develop across the pac nw waters today and Mon, persisting through at least Wed. Thermal low pressure is expected to strengthen along the northern ca and southern or coastline Tue and Wed.


7 Day Forecast for Marine Location Near Onalaska, WA
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location: 46.51, -122.63     debug


Area Discussion for - Seattle, WA
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Fxus66 ksew 261529
afdsew
area forecast discussion
national weather service seattle wa
829 am pdt Sun may 26 2019

Synopsis Drier and warmer conditions are expected to start today
over much of western washington and continue into the week ahead.

Lingering moisture from an upper level low south of the area will
allow for afternoon and evening showers over the cascades most
days.

Short term today through Tuesday Wrap around moisture from an
upper low to the south will bring a few showers today and Monday,
mainly to the cascades. There also might be an isolated
thunderstorm over the cascades each afternoon and evening where it
will be unstable. A weak upper ridge will move over the area on
Tuesday. It should be a dry day expect for a slight chance of
showers over the mountains in the afternoon.

For today, morning low clouds should burn off but there will be
mid and high clouds coming in from the east so partly sunny is
probably about right. There are currently some showers drifting
west from the cascades into the metro area but these seem to be
fading as they move off the mountains and it does not look like
they will amount to much. Highs will be near normal today.

There should be less clouds on Monday. The added sunshine will
result in highs warming several degrees with lower to mid 70s for
much of the interior away from the water. Stronger low level
onshore flow should produce morning clouds and afternoon sunshine
on Tuesday with highs cooling 3-6 degrees. Schneider

Long term Wednesday through Saturday Previous
discussion... Weak upper level ridging will remain the predominant
weather feature for the remainder of the week yielding a generally
dry pattern... However both GFS and ECMWF show occasional hints of
a stray shower here or there due to disturbances associated with
an upper level trough extending into eastern wa. Odds... And thus
pops... Are not terribly favorable for precip... But cannot exactly
leave 0 pops either. As such... Generally silent pops of less than
10 pct are present. A weak upper level trough looks to move into
the area Friday night... With both models kind of agreeing on
this... And this will see a rise in pops for near the end of the
forecast period... But models do disagree on how far south the
feature will plunge... And as such have gone with just slight
chance pops at this time. Smr

Aviation An upper level ridge will build into northern portions
of british columbia later today. East to northeasterly flow aloft
into tonight with an upper level low located well south of the
area. Surface flow will be light northerly through today becoming
onshore early Monday morning.

Ceilings generallyVFR to MVFR currently, though lifr at kpae with
nearby vicinity fog at khqm. CIGS will continue to improve through
the morning withVFR for most by 18z-19z. Mid and high level clouds
will be around into tonight. Light onshore flow late tonight into
early Monday morning may lead to another round of ifr stratus early
Monday, especially across the coast and into the south sound.

Ksea... Improvement to CIGS this morning with MVFR becomingVFR by
18z. Some mid level clouds will be around for the afternoon.

Showers will develop over the cascades this afternoon but the flow
aloft does not look strong enough to push the showers over the
terminal late this afternoon into this evening. Light onshore flow
will develop late tonight with ifr stratus possible Monday
morning. Northerly winds 7 to 12 knots will become light late this
evening. Jd

Marine Light northerly flow will continue through today. Surface
flow will turn onshore early Monday and continue through Tuesday. A
weak surface low will push into the offshore waters later Tuesday
and dissipate into Wednesday.

Small craft advisory winds likely for the central and eastern strait
of juan de fuca both Monday and Tuesday evening. The onshore flow
could be strong enough both days for gale force winds. Jd

Hydrology The daily hydrology discussion has ended until the
start of the next rainy season; it will only be updated as needed
until then.

Sew watches warnings advisories
Wa... None.

Pz... None.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
LOPW1 - 9440422 - Longview, WA 33 mi41 min 56°F1010.5 hPa
TCMW1 - 9446482 - Tacoma Met, WA 54 mi35 min WNW 8 G 8.9
TCNW1 - 9446484 - Tacoma, WA 54 mi41 min 51°F1011.6 hPa

Wind History for Longview, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Chehalis-Centralia Airport, WA22 mi28 minVar 610.00 miMostly Cloudy64°F53°F68%1011.2 hPa

Wind History from CLS (wind in knots)
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Last 24hrCalmNW453CalmCalmCalmCalmCalmCalmCalmCalmCalmN5CalmNW74344
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1 day agoSW86
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SW6SW5S4SW4Calm5CalmS5CalmCalmSW3S4S4
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Tide / Current Tables for Longview, Washington - IGNORE HEIGHTS
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for Longview, Columbia River, Washington
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Weather Map and Satellite Images
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wmap_P
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
Wind Forecast for Seattle, WA (17,4,5,8)
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Ground Weather Radar Station Portland, OR
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weather_mapweather_map weather_map

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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.