Monday, June26, 2017 L-36.com


Marine Weather and Tides
Onalaska, WA

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
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.

Sunrise 5:18AMSunset 9:11PM Monday June 26, 2017 10:17 AM PDT (17:17 UTC) Moonrise 7:30AMMoonset 10:17PM Illumination 7% Phase: Waxing Crescent; Moon at 3 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- 834 Am Pdt Mon Jun 26 2017
In the main channel..Combined seas around 4 ft today and tonight. However, seas will temporarily build to 6 or 7 ft during the ebb around 745 pm this evening, and 8 ft with breakers likely during the very strong ebb around 8 am Tue morning.
PZZ200 834 Am Pdt Mon Jun 26 2017
Synopsis for southern washington and northern oregon coast.. Higher pres will remain over the ne pac and along the S washington and N oregon coasts for the next few days. Thermal low pres will tend to remain well S in N california. After some S winds along the immediate coast today along parts of the oregon coast, winds will tend to be summer type N or nw much of the week.

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 261622
afdsew
area forecast discussion
national weather service seattle wa
922 am pdt Mon jun 26 2017

Synopsis Onshore flow will bring a typical weather pattern of
night and morning clouds, with afternoon clearing and near normal
temperatures for the upcoming work week. An upper level trough will
move through the area over the weekend bringing a slight chance of
showers.

Short term Satellite imagery this morning showing a mixed
bag of clouds, including mid and high clouds over a marine stratus
deck along the coast, central strait and much of the interior south
of admiralty inlet. Low cloud coverage over the interior will
continue to expand through mid morning before beginning to lift and
burn back to the coast around midday. Mid and high level clouds will
continue to stream into the area with the southwesterly flow aloft
today. Weak instability aloft coupled with an upper level short wave
moving into oregon may be enough to product a few light showers,
especially over the south this morning. The instability and
dynamics over oregon is resulting in a few weak thunderstorms just
west of the portland vancouver area this morning. While it is not
expected to affect the area this morning it does warrant mention and
will be monitored. Afternoon clearing will result in mostly sunny
skies for most of the interior. Lingering onshore flow will make it
clearing along the coast difficult. High temperatures today will be
near normal.

The overall weather pattern will remain in place through Wednesday
with late night and morning clouds and afternoon clearing over the
interior. Temperatures will remain near normal. On Wednesday, an
upper level ridge offshore will begin to build into the region while
flow at low levels remains onshore. This will set the stage for a
bit of warming, mainly Thursday into Friday.

Long term From previous discussion... Extended models in good
agreement Thursday and Friday with the upper level ridge offshore
moving over the area. 500 mb heights rising into the lower 580 dms.

The low level flow will remain onshore both days. High temperatures
will be a few degrees warmer both days compared to the short term
with with 70s and lower 80s over the interior. With the onshore flow
highs on the coast will remain in the 60s.

Model solutions inconsistent for the weekend with the GFS building
another ridge over the area for Sunday while the ECMWF brings a
trough into western washington for the weekend with a weak
shortwave. The canadian model is a compromise between the GFS and
ecmwf. The ECMWF solution has remained consistent for a few runs
while the ridging on the GFS is a somewhat new solution. The
forecast is more in line with the ECMWF solution at this point and
will stick with that idea in this package with mostly
cloudy partly sunny skies and a slight chance of showers at some
point over the weekend. Highs will cool back down to near
normal, 60s to mid 70s. Felton

Aviation A slow moving weak upper level trof centered over
western canada will prevail over the region thru this evening. Sw
flow aloft will become W this evening. The low level flow will
remain strong onshore thru this evening. The air mass is weakly
unstable (above the marine layer) over SW wa this morning. There is
a slight risk of isold tstms over lewis county this morning.

Expect primarily MVFR CIGS (1-2k ft) to prevail over much of the
lower elevations this morning. The clouds are anticipated to scatter
out over the interior between 1800 and 2100 utc. Areas of MVFR cigs
will persist over the coast throughout the day.

Ksea... Expect MVFR CIGS this morning. It looks like the stratus may
hang around later than the current TAF indicates, possibly as late
as 2000 utc. Look for low clouds (MVFR cigs) to return late tonight
or after 2 am pdt. Winds will be S or SW 5-13 knots, strongest this
afternoon and evening.

Marine
High pres offshore with lower pres E of the cascades will result in
onshore flow through midweek. The flow will be the strongest through
this evening.

Sew watches warnings advisories
Wa... None.

Pz... Gale warning until midnight pdt tonight for central u.S.

Waters strait of juan de fuca-east entrance u.S. Waters strait of
juan de fuca.

Small craft advisories are in effect for parts of the coastal
waters, the west entrance to the strait of juan de fuca, and the
admiralty inlet.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
LOPW1 - 9440422 - Longview, WA 33 mi48 min 64°F1016 hPa
TCNW1 - 9446484 - Tacoma, WA 54 mi48 min 63°F 52°F1015 hPa
TCMW1 - 9446482 - Tacoma Met, WA 54 mi48 min NNW 5.1 G 7

Wind History for Longview, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Chehalis-Centralia Airport, WA22 mi23 minVar 410.00 miA Few Clouds64°F55°F73%1015.6 hPa

Wind History from CLS (wind in knots)
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Last 24hrNE5Calm434CalmNW7
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5SW6SW4SW53SW4CalmCalmCalmCalmCalmS6SW4SW4SW4
1 day agoNE7N10N87
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NE9CalmCalmNE6CalmCalmCalmCalmCalmCalmCalmCalmCalm3NE6
2 days agoN10NE8N10N8NE10
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N7N7CalmN3N5CalmCalmCalmNE3CalmCalmCalmCalmCalm4N7
G14

Tide / Current Tables for Longview, Washington - IGNORE HEIGHTS
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Longview
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

Mon -- 01:38 AM PDT     2.17 feet Low Tide
Mon -- 05:22 AM PDT     Sunrise
Mon -- 05:38 AM PDT     9.46 feet High Tide
Mon -- 08:32 AM PDT     Moonrise
Mon -- 02:30 PM PDT     -1.68 feet Low Tide
Mon -- 07:11 PM PDT     8.00 feet High Tide
Mon -- 09:07 PM PDT     Sunset
Mon -- 11:17 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.92.32.34.16.999.48.87.55.83.920.4-0.9-1.6-1.40.73.76.687.87.164.8

Tide / Current Tables for Longview, Columbia River, Washington
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Longview
Click for Map
Mon -- 12:33 AM PDT     1.15 feet Low Tide
Mon -- 05:16 AM PDT     5.83 feet High Tide
Mon -- 05:22 AM PDT     Sunrise
Mon -- 08:32 AM PDT     Moonrise
Mon -- 01:50 PM PDT     -0.49 feet Low Tide
Mon -- 06:27 PM PDT     4.40 feet High Tide
Mon -- 09:07 PM PDT     Sunset
Mon -- 11:17 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.21.223.555.85.64.53.42.72.31.70.8-0.1-0.50.31.83.44.34.33.632.41.9

Weather Map and Satellite Images
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Weather Map
wmap_P
IR Satellite Image from GEOS
west_satellite

GOES Local Image of PacificNorthwest    EDIT
Geos

Wind Forecast for Seattle, WA (13,3,4,5)
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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.