Thursday, August17, 2017 L-36.com


Marine Weather and Tides
Felida, 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 6:13AMSunset 8:15PM Thursday August 17, 2017 6:12 PM PDT (01:12 UTC) Moonrise 12:47AMMoonset 4:08PM Illumination 18% Phase: Waning Crescent; Moon at 25 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- 233 Pm Pdt Thu Aug 17 2017
In the main channel..Combined seas around 5 ft tonight and Fri. However, seas temporarily 8 to 9 ft during the strong ebb around 215 am early Fri, and 7 ft with the weaker ebb around 3 pm Fri.
PZZ200 233 Pm Pdt Thu Aug 17 2017
Synopsis for southern washington and northern oregon coast.. High pres will persist over the coastal waters through early next week. Thermal low pres over nw ca/sw or will keep northerly winds in place, with breezy afternoon/evening winds.

7 Day Forecast for Marine Location Near Felida, WA
   Hourly   EDIT   Help
location: 45.73, -122.75     debug


Area Discussion for - Portland, OR
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus66 kpqr 172142
afdpqr
area forecast discussion
national weather service portland or
242 pm pdt Thu aug 17 2017

Synopsis Persistent surface high pressure over the NE pacific
combined with low pressure east of the cascades will maintain onshore
winds the next several days. Slight variations of the upper level
pressure pattern will result in slight variations in how expansive
nighttime morning clouds will be through early next week. The clouds
should clear in the afternoons with temperatures remaining near the
seasonal normals. An upper level ridge is expected early next week
for less clouds and slightly warmer temperatures.

Short term This afternoon through Sunday... Morning clouds have
cleared from all but the most northern oregon coast and southern
washington coast. Even there, though, skies should become sunny by
late afternoon. Expect a quick return of marine stratus to the coast
late this evening with a little bit less inland penetration,
particularly south of about salem where skies may remain clear
tonight.

There will be little change in the weather Friday as another upper
level trough passes by to the north and low-level onshore winds
persist. The marine layer should deepen late Friday night and early
Saturday morning as an upper level trough develops over NW oregon for
a better chance for more widespread clouds Saturday morning.

Therefore the temperatures Saturday afternoon will be slightly
cooler. The pattern remains much the same Sunday, but 850 mb
temperatures warm a couple of degrees, so expect seasonable but
slightly warmer afternoon temperatures Sunday after morning clouds
dissipate. Bowen

Long term Sunday night through Thursday... First up, for your
eclipse forecast: thermal trough that develops along the northern
california coast may be the saving grace for eclipse viewers on
oregon's central coast. The ECMWF brings that trough north into
southwest oregon, which may turn flow offshore enough to keep clouds
out of the path of totality along the coast. We know eclipse viewers
are rooting for that solution. However, the evil GFS is keeping the
thermal trough farther south and flow more northerly which would
allow marine clouds to come onshore along oregon's central coast.

Really and truly we have two scenarios: one where the sky along the
coast remains overcast and another where the sky is clear and it's
about 50-50 right now which scenario will occur. Locations farther
north up near astoria have a higher chance of marine clouds sticking
around through the eclipse. For those inland, under northerly or
northeasterly flow we typically don't see marine clouds make it very
far inland, so locations from the coast range eastward have a very
good chance of clear skies for the eclipse Monday morning.

The approaching trough will make it to our area on Wednesday,
bringing a chance for drizzle or light rain to the north coast on
Wednesday and cloud cover for the rest of the area. As the trough
moves inland, there will be a slight chance for thunderstorms up in
the cascades Wednesday afternoon and evening. As the trough
continues to pass over the area, expect another slight chance of
thunderstorms in the cascades on Thursday. -mccoy

Aviation Dry and stable northwesterly flow aloft. Marine
stratus around astoria and northward into early this evening,
as well as pockets of stratus to north of kalama until around
23z. GenerallyVFR overnight with light flow aloft. But will see
coastal stratus return later tonight to the coast and inland
areas north of salem. But, like today, clouds will break up over
most areas between 18z and 20z.

Kpdx and approaches...VFR tonight with light northwesterly winds
through this evening. Will see MVFR stratus creep back into
region from the north after 11z, linger Fri am, then burn out
between 18z and 20z fri. rockey.

Marine Rather persistent pattern through Sunday, with high
pres over the pac, and thermal low pres over NW calif and sw
oregon. This will maintain northerly winds, with gustier winds
in afternoon evenings, primarily to south of newport.

Seas will generally 5 to 7 ft through the period, but may build
to around 8 ft at times to south of newport with the stronger
north winds. rockey

Pqr watches warnings advisories
Or... None.

Wa... None.

Pz... Small craft advisory for winds through late tonight on
coastal waters from cascade head to florence.

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 mi43 min 72°F1020.5 hPa
TLBO3 - 9437540 - Garibaldi, Tillamook Bay, OR 63 mi43 min 56°F1021.6 hPa
ASTO3 - 9439040 - Astoria, OR 63 mi43 min WNW 6 G 9.9 66°F 71°F1022 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, OR7 mi20 minN 1010.00 miFair79°F53°F41%1019.3 hPa
Pearson Airfield, WA9 mi20 minWNW 510.00 miFair79°F55°F44%1019.4 hPa
Portland, Portland International Airport, OR11 mi20 minNNW 510.00 miA Few Clouds80°F55°F42%1019.4 hPa
Portland-Hillsboro Airport, OR17 mi20 minENE 810.00 miFair79°F57°F47%1019.5 hPa
Portland, Portland-Troutdale Airport, OR22 mi20 minWNW 510.00 miFair80°F54°F41%1019.2 hPa

Wind History from SPB (wind in knots)
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
5
PM
6
PM
Last 24hrNW6NW8NW86N7N53NW3NW7NW6NW3CalmCalmN43N4N6N66E8E8NE7N7N10
1 day agoNW5NW7N5N7N7N9N6N4N4NE3N4CalmCalmCalm55Calm4--6E7E55NW9
2 days agoNW4N4NW4CalmCalmCalmN3NW4N4NW3CalmCalmCalmCalmN633N7N7N10N6
G15
N4N7
G14
NW9

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

Thu -- 01:33 AM PDT     8.24 feet High Tide
Thu -- 01:47 AM PDT     Moonrise
Thu -- 06:14 AM PDT     Sunrise
Thu -- 10:55 AM PDT     -0.13 feet Low Tide
Thu -- 03:16 PM PDT     6.21 feet High Tide
Thu -- 05:08 PM PDT     Moonset
Thu -- 08:14 PM PDT     Sunset
Thu -- 10:36 PM PDT     2.42 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
6.588.27.76.85.54.12.81.60.70.1-0.10.82.84.96.16.15.64.94.13.42.82.52.6

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

Thu -- 01:47 AM PDT     Moonrise
Thu -- 02:33 AM PDT     8.24 feet High Tide
Thu -- 06:14 AM PDT     Sunrise
Thu -- 11:43 AM PDT     -0.13 feet Low Tide
Thu -- 04:16 PM PDT     6.21 feet High Tide
Thu -- 05:08 PM PDT     Moonset
Thu -- 08:14 PM PDT     Sunset
Thu -- 11:24 PM PDT     2.42 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.66.788.27.76.75.442.61.50.60-0.11.1356.16.15.64.94.13.32.82.5

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 (21,6,7,8)
      (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.