Marine Weather and Tides
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen
|Sunrise 7:28AM||Sunset 6:27PM||Tuesday October 15, 2019 4:14 AM PDT (11:14 UTC)||Moonrise 6:42PM||Moonset 8:07AM||Illumination 97%|
7 Day Forecast for Marine Location Near Onalaska, WAHourly EDIT Help
Area Discussion for - Seattle, WA  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus66 ksew 151043|
area forecast discussion
national weather service seattle wa
343 am pdt Tue oct 15 2019
Synopsis A frontal system will approach western washington
this afternoon and move inland during the afternoon and evening
hours. A series of systems will follow and make their way through
the region throughout the remainder of the week, keeping the
pattern wet and unsettled.
Short term today through Thursday Current satellite imagery
indicates mostly high clouds moving across western washington
early this morning. Cloud coverage will continue to increase
throughout the day today as a frontal system approaches the coast.
Expect the messy system to reach the coast by the late morning
hours and slowly move inland throughout the afternoon and evening.
Most locations should continue to see dry conditions for much of
the day today before the front starts to move eastward. Winds will
be breezy ahead of the system for areas across the northern
interior. Temperatures today will be near normal-mostly in the
upper 50s to low 60s across the region.
A secondary front will then pass through the region on Wednesday
afternoon and evening. This second front looks to be better
organized-so have maintained rain in the forecast for much of the
day on Wednesday. This second system will bring another, stronger
round of breezy to locally windy conditions to areas across the
northern interior and sound. Latest guidance continues to indicate
wind speeds that remain just short of wind advisory criteria, so
have held off on any headlines for now. However, this will
continue to be monitored with later model runs. Temperatures on
Wednesday will remain in the upper 50s to lower 60s.
Yet another system will pass through the region on Thursday,
brining additional rainfall and another shot of breezy winds
along portions of the sound. A slight chance of thunderstorms
along the coast can also not be ruled out. Temperatures will
start to cool slightly and are only expected to reach the mid
Long term Friday through Monday A wet and unsettled pattern
will continue throughout the extended time frame, as an upper
level low pressure system continues to remain situated over the
western canadian coast. High temperatures will cool a few degrees
and mostly be in the low to mid 50s. Overnight lows will primarily
be in the lower to mid 40s. 14
aviation... Southwesterly flow aloft increasing through tonight as
cold front slowly approaches the coast. In the lower levels flow
remaining offshore with front to the west.
Increasing high clouds over the area this morning with a mid|
level deck arriving this afternoon. Rain beginning along the coast
midday with the rain pushing inland during the afternoon and
early evening hours. With the onset of the rain ceilings lowering
down into the 4500 to 6000 foot range over the interior with
ceilings remainingVFR into Wednesday morning. For the coast
ceilings lowering down into the 1000 to 2000 foot range with local
visibility 3-5sm in moderate rain.
Ksea... High cloud overcast this morning with a mid level deck
this afternoon. Ceilings lowering down to around 5000 feet 00z-03z
Wednesday and remaining near 5000 feet into Wednesday morning.
Light winds becoming southeast 4 to 8 knots this afternoon. Winds
increasing slightly overnight. Felton
Marine... A strong front will reach the coastal waters by
this afternoon and shift inland during the evening and overnight
hours. A gale warning is in effect for for the coastal waters and a
small craft advisory for the inland waters through Wednesday
afternoon. There is potential for gale force winds across portions
of the northern inland waters Wednesday afternoon as secondary front
moves through but will let day shift further assess. Have also
issued a small craft advisory for rough bar for grays harbor bar as
combined seas build to 10+ feet. Periods of blustery weather will
continue for the rest of the week as additional weather systems move
through the waters. Additional headlines will likely be needed. Seas
will also build along the coast to 15 to 20 foot range by
Hydrology A series of wet systems moving through the area
today into early next week will cause rivers to rise, but river
flooding is unlikely over the next seven days.
Sew watches warnings advisories
Pz... Gale warning from 6 am this morning to 5 pm pdt Wednesday 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 for rough bar from 2 pm this afternoon to 5
pm pdt Wednesday for grays harbor bar.
Small craft advisory from noon today to 5 pm pdt Wednesday 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.
Weather Reporting StationsEDIT (on/off)  Help NOTE: Click on distance to see the station location on a map
|Stations||Dist||Age||Wind||Air Temp||Water Temp||Waves||Pressure||DewPt|
|LOPW1 - 9440422 - Longview, WA||33 mi||74 min||57°F||1015.9 hPa (-0.5)|
|TCMW1 - 9446482 - Tacoma Met, WA||54 mi||74 min||SE 1.9 G 1.9|
|TCNW1 - 9446484 - Tacoma, WA||54 mi||80 min||47°F||56°F||1016.2 hPa|
Wind History for Longview, WA(wind in knots) EDIT (on/off)  Help
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports. Follow links for more data.
|Chehalis-Centralia Airport, WA||22 mi||79 min||N 0||8.00 mi||Fair||41°F||41°F||100%||1016.3 hPa|
Link to 5 minute data for KCLS
Wind History from CLS (wind in knots)
|1 day ago||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||SW||N||W||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm|
|2 days ago||Calm||Calm||Calm||Calm||Calm||Calm||E||Calm||Calm||Calm||Calm||Calm||N||Calm||NW||Calm||N||NE||Calm||Calm||Calm||NE||Calm||Calm|
EDIT Weekend mode (on/off) (on/off)  Help One Week of Data
EDIT (on/off)  Help One Week of Data
Weather Map(on/off)  Help Weather Map
GEOS 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 (7,2,3,4)(on/off)  Help
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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.