Monday, March25, 2019

Marine Weather and Tides
Onalaska, WA

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 7:03AMSunset 7:32PM Monday March 25, 2019 3:08 PM PDT (22:08 UTC) Moonrise 12:00AMMoonset 8:59AM Illumination 76% Phase: Waning Gibbous; Moon at 20 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- 252 Pm Pdt Mon Mar 25 2019
In the main channel.. - general seas...6 to 7 ft tonight, decreasing to 4 to 5 ft Tuesday and Tuesday night. - first ebb...ebb around 915 pm this evening. Seas temporarily building to near 9 ft. - second ebb...ebb around 930 am Tuesday morning. Seas temporarily building to near 9 ft. - third ebb...ebb around 10 pm Tuesday evening. Seas temporarily building to near 7 ft.
PZZ200 252 Pm Pdt Mon Mar 25 2019
Synopsis for the southern washington and northern oregon coast.. An occluded front is lifting north through the waters today. Winds are becoming southerly behind the front. Winds decrease between systems Tuesday before another front lifts north into the waters on Wednesday. A weak surface low will approach central/southern oregon coast Thursday into Friday. Another weak front may arrive over the weekend.

7 Day Forecast for Marine Location Near Onalaska, WA
   Hourly   EDIT   Help
location: 46.51, -122.63     debug

Area Discussion for - Seattle, WA
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus66 ksew 252200
area forecast discussion
national weather service seattle wa
300 pm pdt Mon mar 25 2019

Synopsis A weakening front will through the area this evening
with rain changing to showers. Post frontal showers will end on
Tuesday. A second system will clip the southern part of the area
on Wednesday. An upper level low off the oregon coast Thursday
will dissipate Friday. The next system will arrive late next

Short term tonight through Thursday A front will push north
through the area this evening. Areas of light rain will change to
spotty showers tonight as the front pushes north into canada.

There might be an isolated thunderstorm off the central coast
behind the front tonight where it will be a bit unstable but the
threat looks too low to mention in the forecast.

Isolated to scattered showers will linger behind the front into
Tuesday, especially over the mountains. Showers should pretty much
end entirely Tuesday evening as weak high pressure aloft moves
overhead. Most of the area is looking dry on Wednesday as well.

Difluent southerly flow aloft ahead of an upper low off the oregon
coast will bring a threat of showers to areas south of seattle
later Wednesday. The chance of showers will expand to most of
western washington Wednesday night and Thursday as the upper low
offshore oregon slowly approaches the coast. Temperatures will be
near normal through the period. Schneider

Long term Friday through Monday A weak upper trough will
linger over the area Friday and possibly into Saturday with some
wrap around moisture and instability for a slight chance of
showers. There might be a dry 12-24 hour period later Saturday
into Sunday but it's hard to completely rule out a few showers for
now given the uncertainty and spread in the long range models. It
looks a bit wetter Sunday night and Monday as a pacific weather
system reaches the area but nothing out of the ordinary for this
time of year. Schneider

Aviation Radar shows rain across portions of the coast and
southwest interior. Rain will continue to spread into the region
from south to north later this afternoon into this evening. Rain
will become showery in nature overnight into Tuesday. The air
mass is moist and unstable.VFR ceilings will continue through
this evening with MVFR possible overnight, generally between 08z-
18z, following the passing of the front. Some clearing Tuesday
afternoon into the evening. Winds will be breezy as the front
pushes through. Expect winds to become southerly following the
front with sustained winds 10-15 kts and gusts near 25 kts

Ksea...VFR conditions through this evening. Rain will arrive 23z-
00z and continue through 04-05z. Rain will become spotty in nature
following 05z. MVFR CIGS possible overnight into Tuesday
following the front. Light E NE winds will become southerly by 00z
with sustained southerly 10-15 kts, gusts near 20 kts possible. Jd

Marine Onshore winds will continue through tonight as a frontal
system pushes through the area and an area of low pressure lingers
off the coast. Small craft winds will diminish for the strait
during the evening hours and continue for the coastal waters
through tonight. Winds will transition to southerly this evening
along the interior waters, with small craft winds into Tuesday.

Winds will likely turn offshore Tuesday night into Wednesday with
an area of low pressure located off of the oregon coast. Jd

Hydrology River flooding is not expected for the next 7 days.

Sew watches warnings advisories
Wa... None.

Pz... Small craft advisory until 5 am pdt Tuesday for coastal waters
from CAPE flattery to james island 10 to 60 nm-coastal
waters from CAPE flattery to james island out 10 nm-coastal
waters from james island to point grenville 10 to 60 nm-
coastal waters from james island to point grenville out 10
nm-coastal waters from point grenville to CAPE shoalwater
10 to 60 nm-coastal waters from point grenville to cape
shoalwater out 10 nm.

Small craft advisory until 2 pm pdt Tuesday for admiralty inlet-
east entrance u.S. Waters strait of juan de fuca-northern
inland waters including the san juan islands-puget sound
and hood canal.

Small craft advisory until 5 pm pdt this afternoon for central
u.S. Waters strait of juan de fuca-west entrance u.S.

Waters strait of juan de fuca.

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 33 mi39 min 45°F1012.2 hPa
TCMW1 - 9446482 - Tacoma Met, WA 54 mi39 min NNW 6 G 7
TCNW1 - 9446484 - Tacoma, WA 54 mi39 min 52°F 48°F1012 hPa

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
Chehalis-Centralia Airport, WA22 mi74 minN 09.00 miPartly Cloudy50°F44°F82%1012.5 hPa

Wind History from CLS (wind in knots)
Last 24hr55CalmE5E5CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmNE4CalmCalmCalmNW3S3
1 day agoN3NE3N7NW4CalmCalmCalmCalmCalmCalmCalmCalmS3CalmCalmCalmCalmS3S4Calm33CalmCalm
2 days agoS13

Tide / Current Tables for Longview, Washington - IGNORE HEIGHTS
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Tide / Current Tables for Longview, Columbia River, Washington
   EDIT      (on/off)   Help   One Week of Data
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Weather Map and Satellite Images
       (on/off)   HelpWeather Map
GOES Local Image of PacificNorthwest    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Seattle, WA (18,4,5,8)
      (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.