Monday, May29, 2017

Marine Weather and Tides
St. Helens, OR

Version 3.4
What's New / NOTES
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 5:23AMSunset 8:52PM Monday May 29, 2017 4:24 AM PDT (11:24 UTC) Moonrise 8:44AMMoonset 11:41PM Illumination 16% Phase: Waxing Crescent; Moon at 4 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- 213 Am Pdt Mon May 29 2017
In the main channel..Combined seas around 2 to 4 ft through Monday. However...seas temporarily 6 ft during the very strong ebb around 815 am Monday morning...and 4 ft during the ebb around 9 pm Monday evening.
PZZ200 213 Am Pdt Mon May 29 2017
Synopsis for southern washington and northern oregon coast.. High pres will remain over the coastal waters with low pres inland through early next week. A weak front will move through later this week then high pressure and gusty northerlies return next weekend.

7 Day Forecast for Marine Location Near St. Helens, OR
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location: 45.87, -122.8     debug

Area Discussion for - Portland, OR
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Fxus66 kpqr 291059
area forecast discussion
national weather service portland or
359 am pdt Mon may 29 2017

Synopsis Cooler for Monday, with a lot more in way of low clouds
in the morning into early afternoon. Approaching low pressure from
the west will bring increasing southerly flow aloft. This will
result in threat of late afternoon early evening thunderstorms over
the central oregon cascades today. The thunder threat spreads
further north Tuesday. Otherwise, back to typical late may early
june weather, with partly to mostly cloudy skies and near seasonable

Short term (today through Wednesday night) low clouds continue to
stream inland through the coast range gaps. They will continue to
largely fill the i-5 corridor this morning and will result in
another 3-5 degree drop to temperatures today inland. Tricky area
will be the columbia river gorge and just how far east the cooler
marine air will influence conditions today. Feel the surface thermal
trough will still have some influence for the central gorge with the
hood river area still making it into the upper 80s today but then
rapidly cooling this evening as a westerly marine push dominates.

On the larger scale, the approaching trough will stay offshore today
but there is a southern piece off the northern california coast
which has undergone cyclogenesis spinning up into a nearly mesoscale
closed low. That appears to have taken enough energy to now confine
the thunderstorm threat closer to willamette pass. Most of the
cooler air aloft will remain over the ocean and this leave a
generally more stable air mass over the area. Additionally, the
cooler inland temperatures will make it harder for surface parcels
to overcome a midlevel cap sitting around 750 mb. Later this evening
and overnight, models continue to show some form of light shower
activity across the region. Confidence is very low for precise
location thus have broadbrushed the threat. Amounts should remain
rather light, however.

For Tuesday, models are in much better agreement regarding the shape
and strength of the short-wave trough approaching the area. The
trough axis passes overhead Tuesday afternoon with the colder air
aloft holding off until after dark. This will greatly reduce the
potential for thunderstorms across the area and have reduced the
threat to the cascades. Even then, do not have strong feelings they
will develop west of the cascade crest. Best chance will be Tuesday
afternoon but feel most activity will develop over the east slopes
late Tuesday afternoon and evening leaving just modest shower
activity on the west side.

The longer wave upper trough will split apart Wednesday with another
segment of energy crossing south of the region and into northern
california with the primary low staying well northwest. This could
leave Wednesday largely dry as we sit in between these two segments.

There may be enough left of a trailing cold (cool?) front to bring
light rain Wednesday night, but it is already showing signs of
splitting apart on models which usually leads to little or no precip
in reality. Jbonk

Long term (Thursday through Sunday) no changes. Bulk of
the previous discussion follows. Additional shortwaves will move
through the area Thursday and Friday which will increase shower
chances. The forecast becomes a lot more uncertain towards next
weekend as the ECMWF tries to cut off an upper low overhead while
the GFS strengthens a ridge into the area. Went with a consensus
blend today and will work to add more details this week as things
become more clear. Bentley

Aviation High ifr CIGS around 900 ft will fill most of the
interior tonight and early Monday starting in the south and
working northward as well as spreading up the columbia river to
kpdx. Clouds will dissipate over the interior through midday mon
while coastal areas are likely to remain cloudy.

Kpdx and approaches... CIGS at 800 to 900 ft through much of
Monday morning, dissipating by around 18z for skc the rest of
the day. Bowen

Marine Quiet conditions continue with winds below 20 kt
through at least the middle of this week and likely longer. Winds
turn late Tuesday from out of the northwest to out of the
southwest then south. Seas around 4 ft and will continue through
at least the middle of the week.

Next chance for winds above 20 kt will be next weekend as a
broad upper-level ridge builds over the NE pacific, setting up a
summer-like gusty northerly wind pattern over our waters.

Bowen mccoy

Pqr watches warnings advisories
Or... None.

Wa... None.

Pz... None.

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
LOPW1 - 9440422 - Longview, WA 18 mi55 min 57°F1019.4 hPa
ASTO3 - 9439040 - Astoria, OR 56 mi55 min NW 5.1 G 7 52°F 60°F1019.5 hPa
TLBO3 - 9437540 - Garibaldi, Tillamook Bay, OR 63 mi55 min 52°F1019.7 hPa

Wind History for Longview, WA
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1 day
2 days

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Scappoose, Scappoose Industrial Airpark, OR8 mi32 minN 510.00 miFair53°F50°F89%1018.4 hPa
Kelso, Kelso-Longview Airport, WA18 mi29 minWNW 510.00 miOvercast54°F51°F90%1020 hPa
Pearson Airfield, WA19 mi32 minN 510.00 miOvercast55°F53°F93%1018.5 hPa
Portland, Portland International Airport, OR21 mi32 minNNW 310.00 miOvercast55°F51°F87%1018.3 hPa
Portland, Portland-Hillsboro Airport, OR24 mi32 minWNW 410.00 miFair52°F50°F93%1018.1 hPa

Wind History from SPB (wind in knots)
Last 24hrCalmCalmN4CalmCalmE3NE4NE4Calm44E3CalmE6N8N9N8N10N11N9--N7N5N5
1 day agoW4W3CalmCalmE3E43NE4E43CalmE4E4E4E3W3N5N5N5SE3SE3CalmCalmCalm
2 days agoCalmW3CalmCalmE6CalmNE4CalmN34NE5E7N6N6N8N7NW4N4N6NW3W5CalmCalmW3

Tide / Current Tables for Saint Helens, Oregon - IGNORE HEIGHTS
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Saint Helens
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 -- 04:15 AM PDT     2.38 feet Low Tide
Mon -- 05:26 AM PDT     Sunrise
Mon -- 07:46 AM PDT     9.20 feet High Tide
Mon -- 09:44 AM PDT     Moonrise
Mon -- 05:07 PM PDT     -1.24 feet Low Tide
Mon -- 08:51 PM PDT     Sunset
Mon -- 09:27 PM PDT     7.81 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Tide / Current Tables for Kalama, Washington - IGNORE HEIGHTS
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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 -- 03:26 AM PDT     2.38 feet Low Tide
Mon -- 05:25 AM PDT     Sunrise
Mon -- 07:09 AM PDT     9.20 feet High Tide
Mon -- 09:44 AM PDT     Moonrise
Mon -- 04:18 PM PDT     -1.24 feet Low Tide
Mon -- 08:50 PM PDT     7.81 feet High Tide
Mon -- 08:52 PM PDT     Sunset
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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Weather Map
IR Satellite Image from GEOS

GOES Local Image of PacificNorthwest    EDIT

Wind Forecast for Portland, OR (7,2,3,4)
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Ground Weather Radar Station Portland, OR
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weather_mapweather_map weather_map

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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 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 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.