Thursday, August22, 2019 L-36.com


Marine Weather and Tides
Minnehaha, WA

Version 3.4
NOTICE
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 6:18AMSunset 8:08PM Thursday August 22, 2019 7:55 PM PDT (02:55 UTC) Moonrise 10:39PMMoonset 12:20PM Illumination 50% Phase: Third Quarter Moon; Moon at 22 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- 244 Pm Pdt Thu Aug 22 2019
In the main channel.. - general seas...around 3 to 5 feet through Friday. - first ebb...around 1015 pm Thursday. Seas building to 7 feet. - second ebb...around 1030 am Friday. Seas building to 5 feet. - third ebb...around 1115 pm Friday. Seas building to 5 feet.
PZZ200 244 Pm Pdt Thu Aug 22 2019
Synopsis for the southern washington and northern oregon coast.. High pressure over the waters with a thermal low along the north california and south oregon coast will continue through Friday. A trough temporarily weakens the high pressure during the weekend.


7 Day Forecast for Marine Location Near Minnehaha, WA
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location: 45.62, -122.67     debug


Area Discussion for - Portland, OR
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Fxus66 kpqr 222137
afdpqr
area forecast discussion
national service portland or
237 pm pdt Thu aug 22 2019

Synopsis Seasonable weather is expected Friday through the
weekend with morning clouds clearing in the afternoon. Warmer weather
is expected next week with interior temperatures likely warming into
the 90s.

Short term Today through Monday... Ridging beginning to build over
the pacific northwest today bringing dry and warming conditions. Not
much change to the forecast through the weekend. The ridge won't get
much more space to build after today as an upper trough drops
southeast out of the gulf of alaska. This flattens the ridge starting
Friday afternoon, keeping temperatures seasonable through the
weekend. As large scale upper troughing moves over the area Friday
night into Saturday, may see a weakening front clip the SW washington
coast and willapa hills for a slight chance of rain, but expect dry
conditions elsewhere. Ridging begins to build again on Sunday,
starting a more significant warming trend into next week. Bowen

Long term Monday night through Thursday... Stronger ridging builds
next week, but confidence remains low in exactly how hot temperatures
will get. Models diverge by Tuesday regarding the location and
strength of thermal troughing, which will have a significant impact
on temperatures. If troughing builds such that we end up with strong
offshore flow, temperatures next week could be quite hot - at least
in the mid 90s for a day or two. But if offshore flow is limited,
temperatures will remain slightly more moderate, maybe reaching 90
for a couple of days. The place with the biggest swing based on the
flow pattern will be the coast, which can get just as hot or even
hotter than inland areas with strong offshore flow but otherwise
remains quite moderate. Didn't make a ton of changes to the forecast
temperatures in the long term period due to significant model changes
in the last 24 hours and previously mentioned model discrepancies.

Bowen

Aviation GenerallyVFR conditions with CIGS around 3500 to
4000 ft. Look for a return of MVFR CIGS around 2000 to 3000
feet as well as some MVFR vis along the coast starting around
05z Friday. Coastal locations could also see some periods of ifr
cigs through Friday morning then expect improvement toVFR
conditions starting around 16z Friday. Inland locations expect
vfr conditions through Friday morning.

Kpdx and approaches...VFR conditions with CIGS around 3500 to
4000 feet expected to prevail through Friday morning. 42

Marine High pressure steadily rebuilds through late this
afternoon, tightening the pressure gradient against the thermal
low along the south oregon and north california coast. The
central oregon coastal waters should see winds gusts to 25 kt
later this afternoon and tonight. An advisory has been issued for
this event. High pressure weakens later Friday and into the
weekend as a weak trough moves through. The high pressure
strengthens again early next week.

Seas around 7 ft with 10 to 11 second periods, but should
subside through Friday to around 4 to 5 feet with 7 to 9 second
periods.

Pqr watches warnings advisories
Or... None.

Wa... None.

Pz... Small craft advisory until 5 am pdt Friday for waters from
cascade head to florence or from 10 to 60 nm.

Small craft advisory until 9 pm pdt this evening for coastal
waters from cascade head to florence or out 10 nm.

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
LOPW1 - 9440422 - Longview, WA 37 mi56 min 71°F1016.8 hPa (-0.9)
TLBO3 - 9437540 - Garibaldi, Tillamook Bay, OR 66 mi56 min 59°F1017.5 hPa (-0.8)
ASTO3 - 9439040 - Astoria, OR 71 mi56 min NNW 8.9 G 9.9 64°F 69°F1017.7 hPa (-0.7)

Wind History for Longview, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Pearson Airfield, WA1 mi63 minNNE 510.00 miFair73°F52°F48%1016.3 hPa
Portland, Portland International Airport, OR4 mi63 minN 610.00 miA Few Clouds73°F53°F50%1016.3 hPa
Scappoose Industrial Airpark, OR14 mi63 minNNW 710.00 miFair72°F53°F52%1016 hPa
Portland, Portland-Troutdale Airport, OR15 mi63 minN 010.00 miFair73°F53°F50%1016.3 hPa
Portland-Hillsboro Airport, OR16 mi63 minENE 810.00 miFair71°F53°F53%1016.1 hPa

Link to 5 minute data for KVUO

Wind History from VUO (wind in knots)
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Last 24hrE3--Calm4--4NW5--NW5CalmCalmCalmCalmCalmW4N3W6N5NE644----Calm
1 day agoSW7----------Calm--SE4SE4SE3----CalmSE4E5S5Calm--5SE9S7CalmCalm
2 days agoNW7----------CalmCalmCalmCalmCalmCalmCalmCalmCalmE4CalmCalmSW4----5S36

Tide / Current Tables for Vancouver, 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 Kelley Point, Oregon - IGNORE HEIGHTS
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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 Portland, OR (22,6,7,8)
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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.