Tuesday, October22, 2019 L-36.com


Marine Weather and Tides
Navy Yard City, WA

Version 3.4
NOTICE
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 7:38AMSunset 6:11PM Tuesday October 22, 2019 5:43 PM PDT (00:43 UTC) Moonrise 12:00AMMoonset 2:55PM Illumination 31% Phase: Waning Crescent; Moon at 24 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
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PZZ135 Puget Sound And Hood Canal- 311 Pm Pdt Tue Oct 22 2019
Tonight..NE wind 5 to 15 kt easing to 10 kt after midnight. Wind waves 2 ft or less.
Wed..N wind to 10 kt. Wind waves 2 ft or less. Patchy fog in the morning.
Wed night..N wind to 10 kt in the evening becoming light. Wind waves 2 ft or less.
Thu..Light wind. Wind waves 1 ft or less.
Thu night..Light wind. Wind waves 1 ft or less.
Fri..Light wind becoming sw 5 to 15 kt in the afternoon. Wind waves 2 ft or less.
Fri night..Variable wind to 10 kt. Wind waves 1 ft or less.
Sat..Variable wind to 10 kt becoming n. Wind waves 1 ft or less.
Sun..N wind to 10 kt. Wind waves 1 ft or less.
PZZ100 311 Pm Pdt Tue Oct 22 2019
Synopsis for the northern and central washington coastal and inland waters..High pressure will build into the washington waters this afternoon, then inland Wednesday. Strong onshore flow from earlier today will decrease through Wednesday. High pressure will linger through Thursday, then the next pacific frontal system will arrive Friday.


7 Day Forecast for Marine Location Near Navy Yard City CDP, WA
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location: 47.55, -122.65     debug


Area Discussion for - Seattle, WA
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Fxus66 ksew 222232
afdsew
area forecast discussion
national weather service seattle wa
332 pm pdt Tue oct 22 2019

Synopsis River flooding from Monday's rain event will continue
to subside over the next 24 hours as conditions dry out. The next
cold front will pass thru on Friday, bringing a quick round of
rain showers to the area. As the weekend progresses, a ridge of
high pressure will build into the region, allowing for a dry
forecast through the middle of next week.

Short term tonight through Friday It's been a rather eventful
24 hours across western washington. An organized frontal system,
with rather strong WAA in its warm sector brought widespread rain
across the area yesterday. Mountainous terrain received the
highest rainfall with an average of 2-4 inches, though there were
localized areas of over 5 inches, especially across the central
cascades, where convergence was maximized. As such, a handful of
rivers across the central and northern cascades, as well as the
olympics were able to rise above flood stage. This lead to the
first river flooding event of the season, where the snoqualmie
river at the falls reached major flood stage. Most other rivers
that rose above flood stage experienced minor flooding, with a
select few making it into moderate flood stage.

This afternoon, western washington is in a post-frontal
environment, with the sfc cold front and remaining shower activity
located to the south and east. Nevertheless, a few areas of
drizzle remain as low level moisture remains trapped at the sfc.

Visible satellite shows that some areas of clearing have taken
place, with the exception of some passing high clouds. Aside from
drizzle, the area will remain dry into the overnight hours, with a
few rivers across the central cascades remaining near or above
flood stage, though the majority should continue to recede. Areas
of fog will develop overnight, in the typical spots across the
sw, but also patchy areas of fog are likely around the sound.

With high pressure at the sfc, and a ridge building aloft on
Wednesday, the Sun with finally make an appearance!!! This will
likely occur in the afternoon, after morning fog and low clouds
dissipate, especially across the lowlands. This will also
continue to reduce flooding concerns along the remaining rivers in
flood. High pressure will remain in control through Thursday,
keeping for dry conditions, albeit some more cloud cover as a
river of moisture channels north into bc.

On Friday, a shortwave trough across the pacific will tap into
this moisture channel, swinging the next cold front through the
area during the day. This front will become separated from the
main atmospheric river channel as it approaches the area. In
addition to this, the progressive nature of this system will allow
it pass thru fairly quickly. Rain showers will be likely along the
front on Friday, but no additional flooding impacts are expected
at this time.

Kovacik

Long term Saturday through Tuesday A rather quiet long term
forecast is currently in store for western washington. Per
ensemble guidance, the longwave weather pattern will begin to
transition to more of a far eastern pacific ridge and west-central
us trough.

Beginning Saturday, a weak shortwave trough will dive down from bc
across eastern washington and make way towards the great basin
area. A few showers could materialize as this system grazes by,
mainly across the cascades. QPF would be minimal.

By Sunday, eastern pacific ridge begins to build more firmly into
the pacific northwest. This sets the local area up for a dry
weather forecast-!with sun!-for much of next week. The tradeoff
for this tranquil fall weather will be cooler temps-with highs
generally low 50s most lowlands (mid-upper 40s near water and 30s-
40s in the mountains) with lows in the 30s (20s for mountains).

Kovacik

Aviation Northwest flow aloft as an upper level ridge builds into
the region. The air mass is generally moist near the surface and
stable. Convergence zone activity across king county this afternoon
with MVFR around the central puget sound.VFR mid-level clouds
otherwise with some high clouds over western washington. Generally
vfr MVFR in spots into this evening with MVFR ifr low clouds by late
tonight into Wednesday morning with weakening surface gradients.

Lifr fog development is also possible, especially across the south
sound. Winds generally light northerly. Jd
ksea... MVFR CIGS this afternoon with ifr possible through 23z with
convergence zone activity around. Otherwise, generally MVFR into
tonight with ifr stratus possible early Wednesday morning. Fog
development is also possible in the vicinity of ksea later tonight
into the morning. Winds by this evening will be light northerly. Jd

Marine Small craft advisory level winds for the central and
eastern portions of the strait of juan de fuca as well as the
coastal waters through this evening. Otherwise, high pressure will
build in Wednesday and Thursday across the area with light offshore
flow. Another system will slide through the waters on Friday
afternoon through Friday night for SCA level winds across the
coastal waters and elevated winds elsewhere.

Hydrology Most rivers have crested and are receding. While the
upper snoqualmie has crested it is still above flood. The lower
snoqualmie is rising and will not crest until tonight. The snohomish
is still rising as well. All rivers will have crested by tomorrow
morning. After the current flooding is over, no new flooding
through the rest of the week. Bower

Sew watches warnings advisories
Wa... None.

Pz... Small craft advisory until 11 pm pdt this evening for central
u.S. Waters strait of juan de fuca-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 11 pm pdt this evening for east
entrance u.S. Waters strait of juan de fuca.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
WPOW1 - West Point, WA 14 mi44 min W 2.9 G 2.9 54°F 1030.3 hPa (+0.4)52°F
46121 19 mi49 min 55°F 1029.8 hPa53°F
46120 20 mi45 min 55°F 1029.3 hPa49°F
TCMW1 - 9446482 - Tacoma Met, WA 23 mi62 min NW 4.1 G 5.1
TCNW1 - 9446484 - Tacoma, WA 23 mi62 min 55°F 55°F1030.1 hPa
46125 25 mi46 min 3.9 54°F 1029.4 hPa51°F
PTWW1 - 9444900 - Port Townsend, WA 39 mi62 min SW 8.9 G 14 55°F 51°F1030.7 hPa

Wind History for Seattle, Puget Sound, WA, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Bremerton, Bremerton National Airport, WA8 mi48 minENE 510.00 miOvercast53°F51°F93%1032 hPa
Boeing Field - King County International Airport, WA19 mi51 minVar 310.00 miOvercast57°F48°F74%1030 hPa
Seattle, Seattle-Tacoma International Airport, WA20 mi51 minENE 67.00 miOvercast55°F48°F80%1030.6 hPa
Tacoma, Tacoma Narrows Airport, WA20 mi51 minNNE 310.00 miMostly Cloudy53°F52°F96%1029.7 hPa
Renton Municipal Airport, WA23 mi51 minN 06.00 miOvercast with Haze57°F48°F72%1030.5 hPa

Link to 5 minute data for KPWT

Wind History from PWT (wind in knots)
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--SW8SW5CalmS3CalmNE8NE5E5SE4E43E5E4NE7NE5NE5
1 day ago3S5SE3SW7CalmCalmCalmSW9SW9S12SW13S12S9S9S11S8S8S11--S9
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2 days agoNE4CalmCalmCalmCalmW3CalmCalmCalmCalmCalmSW5S7SW4CalmSW3SW4S6S7S4SW9SW14
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Tide / Current Tables for Bremerton, Washington
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Bremerton
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Tue -- 12:20 AM PDT     Moonrise
Tue -- 05:59 AM PDT     0.52 feet Low Tide
Tue -- 07:39 AM PDT     Sunrise
Tue -- 01:33 PM PDT     11.73 feet High Tide
Tue -- 03:54 PM PDT     Moonset
Tue -- 06:09 PM PDT     Sunset
Tue -- 07:39 PM PDT     6.29 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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8.47.25.73.92.310.512.54.56.89.110.711.611.7119.88.47.16.46.36.87.58.3

Tide / Current Tables for Port Washington Narrows, North Entrance of, Washington Current
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Port Washington Narrows
Click for Map
Tue -- 12:20 AM PDT     Moonrise
Tue -- 04:13 AM PDT     -1.93 knots Max Ebb
Tue -- 06:22 AM PDT     0.00 knots Slack
Tue -- 07:39 AM PDT     Sunrise
Tue -- 10:21 AM PDT     2.79 knots Max Flood
Tue -- 02:31 PM PDT     -0.00 knots Slack
Tue -- 03:54 PM PDT     Moonset
Tue -- 06:03 PM PDT     -1.57 knots Max Ebb
Tue -- 06:09 PM PDT     Sunset
Tue -- 08:39 PM PDT     0.00 knots Slack
Tue -- 10:42 PM PDT     0.41 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.4-0.8-1.3-1.7-1.9-1.6-0.50.71.72.42.82.72.31.50.5-0.3-1-1.4-1.6-1.2-0.50.10.40.4

Weather Map
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wmap_P
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 (20,4,5,8)
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Ground Weather Radar Station Seattle/Tacoma, WA
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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.