Monday, November20, 2017

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 7:17AMSunset 4:35PM Monday November 20, 2017 7:41 AM PST (15:41 UTC) Moonrise 9:06AMMoonset 6:34PM Illumination 4% Phase: Waxing Crescent; Moon at 2 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- 704 Am Pst Mon Nov 20 2017
.small craft advisory for rough columbia river bar in effect until 4 pm pst this afternoon...
In the main channel..Combined seas 18 ft this morning then near 11 ft later this afternoon then near 6 ft by Tue morning. However, seas will temporarily build to near 14 ft with breakers during the ebb around 530 am. Seas to 8 ft with breakers likely can be expected during the strong ebb around 545 pm this afternoon. Seas near 6 ft with the ebb around 615 am Tue.
PZZ200 704 Am Pst Mon Nov 20 2017
Synopsis for southern washington and northern oregon coast.. A strong front moving slowly south over the coastal waters will drop south of the area this morning. This front will stall near the south oregon coast today then lift back northward late tonight and Tuesday for another round of gale force wind.

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 201044
area forecast discussion
national weather service portland or
245 am pst Mon nov 20 2017

Synopsis Wet and unsettled weather this week. A cold front will
move southeast across the area today. The front returns tonight and
tue, lifting north as a warm front. A cold front will push into the
region off the pacific Tuesday night and Wednesday. Another cold
front will move through on thanksgiving, with showers lingering into
Friday. Another front is expected for the weekend.

Short term Tonight through Wednesday... A fine line on klgx
radar, and buoys showed the cold front finally approaching the coast
early this morning, with coastal surface pres gradients beginning to
weaken. Expect the winds to diminish once the front moves onshore
during the early morning hours. Heaviest precipitation was out in
front of the front, where SW 850 mb winds from 50 to 60 kt were
coupled with precipitable water values of 1.1 to 1.2 inches. The
focus of the heaviest rains will shift south ahead of the front
today, with the front ultimately expected to drop down into sw
oregon. Surface observations in the south wa cascades were warming,
reflecting rising snow levels. Expect to be able to drop the winter
storm warning a little early there with the new forecast, as
precipitation turns over to rain over all but the highest

Models continue to show the upper level ridge quickly rebuilding
over the pacific NW tonight and tue, once the shortwave moving
across wa heads off to the east. This brings the old frontal
boundary over SW or back north tonight and tue, lifting the front
back up into wa. Good moist isentrpic lift is noted ini the lower
levels, seen along the 290k isentrope tonight, so will see
categorical pops spread back to the north overnight into early tue.

Deep moisture is noted with the air mass south the of the front and
feeding up over the front, with precipitable water values around 1.3
inches. The front moves up pretty quickly however, shifting the
focus for the heaviest rains back north into wa by tue. A mild and
very moist air mass however remains over the region into wed.

Dynamics however are rather weak, as a rather amorphous-looking old
baroclinic zone drifts in from the west. With the deep moisture,
will need keep a decent chance for pops going through wed, but not
enough confidence to keep categorical pops everywhere, so wlll back
off on pops a bit for Tue night and wed. South of the warm front tue
through wed, will see temps above normal with snow levels well above
pass levels.

Long term Wednesday night through Sunday. No changes.

Previous discussion follows. Expect steady rain across the region
during any pre-holiday travel. For thanksgiving, a front crossing
the area will bring rain to southwest washington and northwest
oregon, but expect temperatures to be several degrees above seasonal
normals, with afternoon highs in the mid to upper 50s. Snow levels
look to remain well above the cascade passes. There might be a
slight break in precipitation at the start of next weekend, but it's
looking more unlikely as a new system enters into the area during
the weekend. Bishop tolleson &&

Aviation Cold front slowly working south along the wa coast.

Front is moving ashore on the south wa coast as of 2 am and will
continue to slowly drop south and east this morning. Ahead of
the front mainly MVFR CIGS with occasional ifr CIGS and vis at
the coast and north of ksle inland. Lower conditions will fill in
south of ksle as the front nears. Model soundings suggest better
mixing after 18z Mon for improvement to an MVFR toVFR mix.

Cascades and higher terrain become frequently obscured. A warm
front lifts from south to north tonight into Tue morning. Expect
MVFR or lower conditions with this system.

Kpdx and approaches... Moderate rain in the area but generally
MVFR, but may see ifr CIGS through 18z as the front moves
through. Low-level instability after 18z will help to improve
flight conditions to an MVFR toVFR mix. Mh weishaar

Marine Front is slow to drop south along the coast. It appears
to have made landfall near willapa bay as of 2 am. It appears to
be weakening as well although slowly. Will continue gale warning
through early morning. There should be a short period of small
craft advisory winds and seas later in the morning then ease
quickly as weak high pressure build over the waters. This quiet
period will be benign as the front returns as a warm front
tonight into tue. This system will probably bring gale force
winds, especially to the outer zones later tonight into tue.

A series of systems move south to north offshore Wed and may
bring S winds 20 to 30 kt at times through thu.

With the slower movement of the front, combined seas remain near
20 ft and remains 3 to 4 ft above spectral bulletin forecast. Seas
forecast to drop to near 10 ft or less later this afternoon. Seas
climb back well into the teens Tue and look to remain at that
level through thanksgiving. Mh weishaar

Pqr watches warnings advisories
Or... None.

Wa... None.

Pz... Gale warning until 5 am pst early this morning for coastal
waters from CAPE shoalwater wa to cascade head or out 60

Gale warning until 7 am pst this morning for coastal waters
from cascade head or to florence or out 60 nm.

Small craft advisory for rough columbia river bar until 9 am
pst this morning.

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 mi42 min 49°F1000.2 hPa (-1.2)
TLBO3 - 9437540 - Garibaldi, Tillamook Bay, OR 63 mi42 min 50°F1002.6 hPa (+0.9)
ASTO3 - 9439040 - Astoria, OR 63 mi42 min NNW 8.9 G 12 50°F 50°F1000.6 hPa (+1.6)

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

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Scappoose Industrial Airpark, OR7 mi49 minSE 54.00 miLight Rain Fog/Mist51°F51°F100%1001 hPa
Pearson Airfield, WA9 mi49 minS 86.00 miLight Rain Fog/Mist54°F52°F93%1001.4 hPa
Portland, Portland International Airport, OR11 mi49 minSSW 1410.00 miLight Rain54°F51°F90%1001.5 hPa
Portland-Hillsboro Airport, OR17 mi49 minS 92.50 miLight Rain Fog/Mist52°F50°F93%1001 hPa
Portland, Portland-Troutdale Airport, OR22 mi49 minVar 55.00 miRain Fog/Mist55°F51°F87%1001.6 hPa

Wind History from SPB (wind in knots)
Last 24hrSE5SE6SE9SE8S4CalmCalmS3SE3S7SE7SE3SE10SE10E10SE7SE12SE12SE9S9SE12S5E4SE5
1 day agoW4CalmCalmCalmCalmE4SE5CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmW4W3CalmCalmCalmSE7SE6
2 days agoS7SW3S4SW7SW7SW85SW6S3N3W3NW3CalmCalmCalmCalmW4CalmCalmCalmCalmCalmCalmCalm

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

Mon -- 02:47 AM PST     -0.35 feet Low Tide
Mon -- 07:05 AM PST     7.69 feet High Tide
Mon -- 07:18 AM PST     Sunrise
Mon -- 09:05 AM PST     Moonrise
Mon -- 02:35 PM PST     2.92 feet Low Tide
Mon -- 04:34 PM PST     Sunset
Mon -- 06:13 PM PST     8.91 feet High Tide
Mon -- 06:34 PM PST     Moonset
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
   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

Mon -- 03:35 AM PST     -0.35 feet Low Tide
Mon -- 07:17 AM PST     Sunrise
Mon -- 08:05 AM PST     7.69 feet High Tide
Mon -- 09:05 AM PST     Moonrise
Mon -- 03:23 PM PST     2.92 feet Low Tide
Mon -- 04:35 PM PST     Sunset
Mon -- 06:34 PM PST     Moonset
Mon -- 07:13 PM PST     8.91 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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

GOES Local Image of PacificNorthwest    EDIT

Wind Forecast for Portland, OR (10,2,3,4)
      (on/off)   Help

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

Ad by Google

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.