Sunday, September24, 2017 L-36.com


Marine Weather and Tides
Stevenson, 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 6:59AMSunset 7:02PM Sunday September 24, 2017 1:44 AM PDT (08:44 UTC) Moonrise 10:29AMMoonset 8:42PM Illumination 14% 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
    EDIT      (on/off)   Help
7 Day Forecast for Marine Location Near Stevenson, WA
   Hourly   EDIT   Help
location: 45.68, -121.9     debug


Area Discussion for - Portland, OR
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus66 kpqr 240343
afdpqr
area forecast discussion
national weather service portland or
842 pm pdt Sat sep 23 2017

Synopsis Expect mostly sunny skies Sunday, other than some morning
coastal stratus. The next front arrives mon, with increasing chance
of light rain. High pressure builds later tue, and remains over the
region through end of next week. This will allow for dry weather,
with above normal temperatures under some offshore flow.

Short term Tonight through Tuesday... An upper level ridge will
move onshore over the pac NW later tonight and Sunday, which will
bring a warm and dry end to the weekend. Satellite imagery shows
mostly clear skies across SW washington and NW oregon tonight.

Northerly winds and upwelling over the waters should allow for at
least some stratus formation over the coastal waters later tonight,
and expect that the coast will be mostly cloudy to start Sun morning.

Although the 00z NAM suggests some clouds over the northern interior
as well, am not nearly as confident that this will occur. However,
there will likely be pockets of radiational fog or low stratus over
the interior lowlands early Sun morning. Otherwise, expect a mostly
sunny day, with afternoon highs generally a few degrees warmer than
today.

As the ridge moves inland sun, it flattens out with a couple of weak
shortwaves moving into wa Sun night and mon. With few clouds and weak
ridging aloft, temps should warm Sun a few degrees over todays highs.

Mid level moisture spreads in Sun night, but with little apparent
lift overall. However, the low level flow turns southerly along the
south wa coast to inject a some low level moisture as the surface
ridge sinks south, so will keep a slight chance for some light rain
there late Sun night. As upper level ridging rebuilds offshore mon
and the surface ridge remains extending inland over far northwest
or, the chances for rain will be slow to spread inland. Lingering
baroclinicity will keep a slight chance for rain over the northwest
part of the forecast area into Mon night.

Mon sees the building upper ridge pushing in closer to the coast. As
a thermal induced surface trough builds up the oregon coast tue,
flow turns offshore for most of the forecast area. This brings
warming temps, and decreasing clouds. Pyle

Long term Upper ridge slowly pushes inland Wed and thu, moving
east towards the northern rockies fri. Low level flow remains
offshore Wed through Fri as the inverted surface trough drifts
offshore and weakens. This will bring warmer than normal temps to
the region including the coast, with the warmest days likely to be
wed and thu. By Fri night models in general agreement with pushing a
weak shortwave through the pacific nw, pushing down upper heights
and allowing a weak cold front to move in. While still likely too
dry to carry any sort of mentionable pop, the flattened flow should
still allow some clouds back in, while cooling temps down a few
degrees.

Aviation Vfr across the region tonight. Return of stratus to
the coastal area will bring return to ifr CIGS to by 07z with
potential for lifr by 09z as winds ease. Weak onshore push will
bring CIGS to around kkls and maybe as far as kpdx. Otherwise,
expect only patchy local stratus at best. WidespreadVFR inland
by 18z, withVFR returning to coast closer to 20z.

Kpdx and approaches...VFR this evening and early tonight, but
about a 35 percent chance of lower MVFR CIGS developing at the
terminal after 15z as stratus pushes up the columbia river.

Cullen

Marine Light north winds continue across the waters Sunday
under high pressure. A front will cross the waters on Monday with
a shift to south winds but speeds generally 15 knots or less.

High pressure then develops over the waters towards midweek, with
a return of north winds and the potential for advisory strength
winds returning by Tuesday night south of cascade head. Seas
remain generally 4 to 6 feet through the first half of next week.

Cullen

Pqr watches warnings advisories
Or... None.

Wa... None.

Pz... None.

Interact with us via social media:


Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
LOPW1 - 9440422 - Longview, WA 63 mi45 min 65°F1019.9 hPa (+0.3)

Wind History for Longview, WA
(wind in knots)    EDIT      (on/off)   Help
Last
24hr
1 day
ago
2 days
ago

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure

Wind History from CZK (wind in knots)
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
Last 24hr24------------------------SW12
G20
SW6W6----SW65SW5
G15
5SW11
G18
1 day ago53------------------------322SW632SE2E21S2
2 days ago----------------------------1214334434

Tide / Current Tables for Ellsworth, Washington - IGNORE HEIGHTS
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Ellsworth
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

Sun -- 06:47 AM PDT     0.07 feet Low Tide
Sun -- 07:00 AM PDT     Sunrise
Sun -- 11:03 AM PDT     7.09 feet High Tide
Sun -- 11:31 AM PDT     Moonrise
Sun -- 06:44 PM PDT     1.50 feet Low Tide
Sun -- 07:03 PM PDT     Sunset
Sun -- 09:45 PM PDT     Moonset
Sun -- 10:47 PM PDT     7.94 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
7.36.14.73.21.90.90.20.11.53.96.17.16.96.15.1432.11.61.635.47.47.9

Tide / Current Tables for Vancouver, Washington - IGNORE HEIGHTS
   EDIT      (on/off)   Help   One Week of Data
Vancouver
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

Sun -- 06:22 AM PDT     0.07 feet Low Tide
Sun -- 07:00 AM PDT     Sunrise
Sun -- 10:37 AM PDT     7.09 feet High Tide
Sun -- 11:31 AM PDT     Moonrise
Sun -- 06:19 PM PDT     1.50 feet Low Tide
Sun -- 07:03 PM PDT     Sunset
Sun -- 09:46 PM PDT     Moonset
Sun -- 10:21 PM PDT     7.94 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
6.85.54.12.71.50.60.10.52.556.77.16.65.74.63.52.61.91.51.946.47.87.8

Weather Map and Satellite Images
       (on/off)   Help
Weather Map
wmap_P
IR Satellite Image from GEOS
west_satellite

GOES Local Image of PacificNorthwest    EDIT
Geos

Wind Forecast for Portland, OR (4,6,7,8)
      (on/off)   Help

Ground Weather Radar Station Portland, OR
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

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.