Wednesday, June28, 2017 L-36.com


Marine Weather and Tides
Scappoose, OR

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 5:23AMSunset 9:06PM Wednesday June 28, 2017 10:39 AM PDT (17:39 UTC) Moonrise 9:53AMMoonset 11:25PM Illumination 22% Phase: Waxing Crescent; Moon at 5 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
PZZ210 Columbia River Bar- 826 Am Pdt Wed Jun 28 2017
.small craft advisory for rough columbia river bar in effect until noon pdt today...
.small craft advisory for rough columbia river bar in effect from 7 pm pdt this evening through this evening...
In the main channel..Combined seas 5 ft today and tonight. However, seas temporarily near 8 ft with breakers during the strong ebb around 845 am this morning, and near 9 ft with breakers during the weaker ebb around 930 pm this evening.
PZZ200 826 Am Pdt Wed Jun 28 2017
Synopsis for southern washington and northern oregon coast.. Little change in overall weather pattern through the coming weekend. High pres will remain over the ne pac. Meanwhile, thermal low pres will remain over nw california and far sw oregon. Pres gradients will strengthen later Sun and Mon, with a bit more in the way of gusty northerly winds and choppy seas.

7 Day Forecast for Marine Location Near Scappoose, OR
   Hourly   EDIT   Help
location: 45.7, -122.87     debug


Area Discussion for - Portland, OR
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus66 kpqr 281632
afdpqr
area forecast discussion
national weather service portland or
931 am pdt Wed jun 28 2017

Synopsis Typical summer conditions continue through the forecast
period. An upper ridge will traverse the area Thursday and Friday,
bringing less morning stratus and slightly warmer afternoon
temperatures. Otherwise, the seasonable pattern of morning clouds and
afternoon Sun continues into early next week.

Short term Today through Saturday... Morning cloud deck not quite
as deep as yesterday, and expect burn-off an hour or so earlier today
compared to yesterday (between 20-21z 1-2 pm pdt this afternoon).

No updates to the previous discussion, which follows below. Drb
the overall weather pattern is remarkably similar to this time 24
hours ago, with most sites within a few degrees of yesterday's
temperatures and surface observations reflecting a marine stratus
deck at the coast and along the the lower columbia, but not yet fully
solid through the willamette valley. Latest satellite data depicts a
solid marine push against the coast range and willapa hills, with
inland penetration along the lower columbia towards the portland
metro area as well as into the southern willamette valley around
eugene. Meanwhile, a secondary stratus layer is developing along the
cascade foothills and beginning to build back into the remaining
portions of the valley. Can't rule out a little drizzle early this
morning out of this deeper marine layer, especially along the
coast coast range. Clouds will again be a little slow to clear, but
most of the forecast area will have at least mostly sunny conditions
by the late afternoon with temperatures into the upper 70s in the
inland valleys and in the 60s along the coast.

The offshore upper ridge will move closer to the region late tonight
and into Thursday before moving across the area early Friday.

Low-level flow remains onshore, but expect a compressed marine layer
under the rising heights associated with the ridge. As a result,
expect a weaker marine push with less widespread stratus Thursday
morning. With skies clearing earlier in the day and a warming air
mass (850 mb temperatures warming to around 14 degrees c), expect
temperatures inland to reach the lower 80s in the afternoon. As the
ridge axis moves across the region Friday, even less morning cloud
cover and temperatures into the mid 80s in the valleys can be
expected. Flow aloft becomes a bit more northwesterly as the ridge
continues eastward, with a return to more widespread morning clouds
before abundant afternoon sunshine and temperatures remaining
slightly above normals. Cullen

Long term Saturday night through Tuesday... A rather typical
summertime pattern continues through the holiday weekend as westerly
flow continues through the period. A series of weak embedded impulses
will pass well north of the area at times, with the largest impact to
the local area being increased cloud cover as the marine layer
deepens. Model guidance continues to favor late Saturday and Monday
as the likely timing for this disturbances to pass closest to the
area, but still some variability among ensemble guidance. However,
guidance has trended even more towards less (if any) light rain or
drizzle, so have also guided the forecast for early next week in this
direction. Expect that most locations will remain entirely dry
through the period with temperatures holding slightly above seasonal
normals over the weekend, then trending closer to normal for the
start of next week. Cullen

Aviation Not much change from Tuesday. Tops 040-045 and bases
again 015-025. Timing of clearing inland today similar or an
hour or so earlier than Tuesday at most, while the coast should
remain mostly cloudy through the day and this evening. MVFR cigs
return inland tonight and Thu morning with best coverage in the
north and southward along the cascade foothills, with possibly
less coverage in the west side of the valley.

Kpdx and approaches... MVFR stratus will give way toVFR
conditions early to mid afternoon, then return late tonight and
by around sunrise thu. Pt

Marine Not much change in overall weather pattern, as will see
rather persistent high pres over the NE pac, and thermal low
pres staying well south over NW california. Gradients not all
that strong, so northerly winds generally staying under 20 kt,
close to 20 kt at times in the far outer waters. Winds will be
less Thursday than today, increase a little Friday, decrease
Saturday, then increase again possibly Sunday.

Wave models are running 1-2 ft below the observed values this
morning, and with short periods of only 7 or 8 seconds, leading
to choppy seas. Issued a small craft advisory for hazardous seas
for this. Will keep it in effect through this evening and let the
next shift see if we need to extend it any further, but seas
will be falling some tonight and Thursday. Seas will then remain
below small craft advisory values through the weekend. Pt

Pqr watches warnings advisories
Or... None.

Wa... None.

Pz... Small craft advisory for hazardous seas until 11 pm pdt this
evening for coastal waters from CAPE shoalwater wa to
florence or out 60 nm.

Small craft advisory for rough columbia river bar until noon
pdt today.

Small craft advisory for rough columbia river bar from 7 pm
this evening to midnight pdt tonight.

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 28 mi51 min 64°F1018.2 hPa
TLBO3 - 9437540 - Garibaldi, Tillamook Bay, OR 56 mi51 min 61°F1018.9 hPa
ASTO3 - 9439040 - Astoria, OR 59 mi51 min WNW 4.1 G 7 57°F 65°F1017.9 hPa

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
Scappoose Industrial Airpark, OR5 mi46 minN 010.00 miOvercast60°F51°F72%1018 hPa
Portland-Hillsboro Airport, OR12 mi46 minVar 310.00 miOvercast60°F50°F70%1018.1 hPa
Pearson Airfield, WA12 mi46 minN 010.00 miOvercast61°F53°F75%1018.2 hPa
Portland, Portland International Airport, OR16 mi46 minN 010.00 miOvercast60°F51°F72%1018.3 hPa

Wind History from SPB (wind in knots)
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
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
Last 24hr3N4E5E54E6E7E5CalmN8NW7NW5NW6N64N7N5CalmCalmS3CalmCalmCalmCalm
1 day agoN93N6S63E8N5W9
G18
NW12
G18
NW7N8N7N9N8N8N6N7N4N6N4N4NW34Calm
2 days agoE43E4E4E44N11NW7NW10
G17
N11NW4N6N8N5N6N7N5N8NW3N6N6N5CalmNW4

Tide / Current Tables for Rocky Point, Multnomah Channel, Oregon
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Rocky Point
Click for Map
Wed -- 04:48 AM PDT     0.55 feet Low Tide
Wed -- 05:24 AM PDT     Sunrise
Wed -- 09:19 AM PDT     2.59 feet High Tide
Wed -- 10:53 AM PDT     Moonrise
Wed -- 05:45 PM PDT     0.13 feet Low Tide
Wed -- 09:04 PM PDT     Sunset
Wed -- 10:42 PM PDT     2.32 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.91.71.410.70.60.81.52.22.62.52.11.81.51.310.60.20.10.51.11.82.22.3

Tide / Current Tables for Kelley Point, Oregon - IGNORE HEIGHTS
   EDIT      (on/off)   Help   One Week of Data
Kelley Point
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

Wed -- 05:24 AM PDT     Sunrise
Wed -- 06:30 AM PDT     2.13 feet Low Tide
Wed -- 10:22 AM PDT     8.38 feet High Tide
Wed -- 10:53 AM PDT     Moonrise
Wed -- 07:05 PM PDT     -0.71 feet Low Tide
Wed -- 09:04 PM PDT     Sunset
Wed -- 11:47 PM PDT     8.02 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
7.76.95.94.73.62.72.22.44.36.78.28.37.66.44.93.31.80.5-0.3-0.70.12.55.37.4

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 (13,3,4,5)
      (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.