Thursday, December13, 2018 L-36.com


Marine Weather and Tides
Parkwood, 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 7:48AMSunset 4:21PM Wednesday December 12, 2018 10:51 PM PST (06:51 UTC) Moonrise 11:39AMMoonset 9:32PM Illumination 31% Phase: Waxing Crescent; Moon at 6 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- 828 Pm Pst Wed Dec 12 2018
.gale warning in effect through Thursday morning...
Tonight..S wind 25 to 35 kt. Wind waves 4 to 6 ft. Rain.
Thu..S wind 15 to 25 kt rising to 20 to 30 kt in the afternoon. Wind waves 3 to 5 ft. Rain.
Thu night..S wind 15 to 25 kt. Wind waves 2 to 4 ft. A chance of rain.
Fri..SE wind 20 to 30 kt becoming S 25 to 35 kt in the afternoon. Wind waves 4 to 6 ft.
Fri night..S wind 5 to 15 kt. Wind waves 2 ft or less.
Sat..S wind to 10 kt. Wind waves 1 ft or less.
Sat night..SE wind to 10 kt. Wind waves 1 ft or less.
Sun..SE wind 5 to 15 kt becoming s. Wind waves 2 ft or less.
Mon..S wind 5 to 15 kt. Wind waves 2 ft or less.
PZZ100 828 Pm Pst Wed Dec 12 2018
Synopsis for the northern and central washington coastal and inland waters..Strong frontal systems move across the area tonight into Thursday, Friday, and next week. Small craft and gale force winds are likely at times through the week ahead.


7 Day Forecast for Marine Location Near Parkwood, WA
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location: 47.55, -122.62     debug


Area Discussion for - Seattle, WA
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Fxus66 ksew 130448
afdsew
area forecast discussion
national weather service seattle wa
848 pm pst Wed dec 12 2018

Synopsis A strong front will bring rain and heavy mountain
snow to western washington tonight into Thursday. Expect windy
conditions across most of the area including greater puget sound.

Another wet and potentially windy system will reach the area
Friday, then a break on Saturday. Additional fronts will affect
the area early next week keeping the pattern active.

Short term An active weather pattern will continue over the
next few days and beyond, as a series of frontal systems affect
the region. The next vigorous frontal system is pushing inland.

This system will have very strong flow in the low to mid levels,
with 925 mb winds reaching 50 kt across the olympics. This will
dump appreciable rain amounts and concerns of flooding on the
olympic peninsula has prompted another flood watch to be issue.

Check the latest hydrology section below for further details. For
current river specific information refer to the latest flood
bulletin.

All the meso models show a deep meso low developing this evening
with gradients expected to increase rapidly. The pdx-bli gradient
should peak near +11 mb around midnight, with almost all the
isobars from around sea everett to around admiralty inlet. This
set up should easily give advisory level winds with gusts 45 to 50
mph to areas near admiralty inlet including the north portion of
puget sound. The uw WRF shows surprisingly strong winds down to
tacoma which is a bit unusual with a meso low forcing the wind
speeds. There could be some gusts to 45 mph tonight and into early
Thursday with possible downed tree branches and localized power
outages. Winds should increase this evening and peak overnight
before easing.

Snow will continue to fall in the mountains. Milder air will
filter into the area, but cold air will probably remain trapped in
the passes. There could be some periods of mixed precipitation
including freezing rain or sleet. Storm totals should end up in
the 1 to 2 foot range with locally 3 feet at mount baker.

Models show another even stronger low developing Friday which will
bring rain and stronger winds to the area. At least wind advisory
strength winds are expected for most the area. However, the strong
southeast gradient favors the north interior which could get high
wind. A watch may be needed, forecasts should be monitored
closely.

Mercer

Long term A succession of wet fronts will impact the pacific
northwest this weekend into next week. Rain amounts in the
mountains and lowlands could be significant, increasing the risk
of landslides. None of the systems look particularly cold, but
snow levels should be low enough for period of heavy snow in the
mountains, especially ski resorts. There will probably be some
intrusion of milder air at times with fluctuating snow levels.

Overall, these systems should improve snowpack.

Mercer

Aviation Next system is making its way inland this evening.

Conditions range fromVFR to ifr across TAF sites though sites
withVFR CIGS currently will likely drop down as heavier
rain moisture moves onshore. Little improvement is expected thru
much of Thursday. As a weak ridge of mid level high pressure tries
to briefly build in on Thursday, widespread rain should lift
north but still give way to fairly numerous showers. In addition,
with this weather system, winds will continue to be breezy gusty into
Thursday. There is indication of winds off the sfc increasing to
around 40-50kt, so have continued wind shear in the tafs tonight.

Ksea... Winds are beginning to pick up and gust to 20 to 25 kts.

This trend should continue thru much of the TAF cycle. Wind shear
has also been placed in the TAF tonight to account for development
of strong low level winds. Scattered showers will transition to
more widespread heavier rain thru the night before tapering again
to showers Thursday.VFR CIGS will likely lower to MVFR with rain
tonight and little recovery is anticipated at this time thru
Thursday. Winds may gradually subside a bit into the 10 to 15 kt
range toward end of TAF period.

Kovacik ceo

Marine Next system is making its way inland this evening.

Winds have picked up fairly rapidly. Gale warings are in effect
for most of the coastal and inland waters with the expection of a
small craft advisory in the central strait. A brief lull in the
strong winds will take place late Thursday morning thru mid
afternoon but it will be brief. Winds will likely be small craft
for all waters during this time period. Next, stronger system
quickly moves in in its wake Thursday evening - Friday where
winds will likely pick right back up to gale force for most waters.

Gale watch continues for this period but likely will be upgraded
with next marine package. In addition, SCA for rough bar at grays
harbor will remain in effect thru early Friday.

Kovacik ceo

Hydrology The skokomish river in mason county is below flood
stage and leveling off but will start rising again tonight and
Thursday due to another round of heavy rain over the region. Minor
to moderate flooding is forecast for the skokomish river with
this next wave. There is a flood watch for the rest of the olympic
peninsula for the possibility of a variety of flooding with the
heavy rain. The bogachiel river is specifically one river that may
also flood with this storm system. Other rivers flowing of the
olympics will be monitored. Otherwise, additional flooding is not
expected through the end of the week.

The stormy pattern continues into next week and still show a potent
storm mid-week, but current model runs are trending to push some of
the heaviest rain just north into vancouver island as the upper
ridge amplifies, leaving western wa with less precipitation than
earlier runs. Still, river models are showing there could be more
widespread flooding with that system.

Jbb

Sew watches warnings advisories
Wa... Wind advisory until noon pst Thursday for admiralty inlet area-
bellevue and vicinity-bremerton and vicinity-everett and
vicinity-hood canal area-san juan county-seattle and
vicinity-tacoma area-western skagit county-western whatcom
county.

Winter storm warning until noon pst Thursday for cascades of
pierce and lewis counties-cascades of snohomish and king
counties-cascades of whatcom and skagit counties.

Flood watch from midnight pst tonight through Thursday afternoon
for admiralty inlet area-central coast-eastern strait of
juan de fuca-hood canal area-lower chehalis valley area-
north coast-olympics-western strait of juan de fuca.

Wind advisory until 9 am pst Thursday for central coast-north
coast.

Pz... Small craft advisory for rough bar until 4 am pst Friday for
grays harbor bar.

Gale watch from Thursday afternoon through late Thursday night
for admiralty inlet-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-
east entrance u.S. Waters strait of juan de fuca-northern
inland waters including the san juan islands-west entrance
u.S. Waters strait of juan de fuca.

Gale warning until 7 am pst Thursday 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-west entrance u.S. Waters strait of
juan de fuca.

Gale warning until 10 am pst Thursday 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 7 am pst Thursday for central 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 12 mi52 min S 34 G 38 47°F 1020.2 hPa (-1.5)41°F
EBSW1 - 9447130 - Seattle, WA 15 mi58 min SE 5.1 G 9.9 46°F 51°F1021.1 hPa
46120 19 mi44 min 48°F 1019.3 hPa42°F
46121 20 mi48 min 47°F 1020.5 hPa44°F
TCNW1 - 9446484 - Tacoma, WA 22 mi58 min 46°F 51°F1021.8 hPa
TCMW1 - 9446482 - Tacoma Met, WA 22 mi58 min SSE 5.1 G 8
PTWW1 - 9444900 - Port Townsend, WA 39 mi106 min ESE 9.9 G 19 47°F 48°F1017.5 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, WA9 mi56 minSSW 118.00 miLight Rain43°F42°F97%1022.2 hPa
Boeing Field - King County International Airport, WA17 mi59 minSE 89.00 miLight Rain45°F41°F86%1021.2 hPa
Seattle, Seattle-Tacoma International Airport, WA18 mi59 minS 810.00 miLight Rain45°F41°F86%1021.7 hPa
Tacoma, Tacoma Narrows Airport, WA19 mi59 minS 16 G 2210.00 miLight Rain44°F39°F85%1021 hPa
Renton Municipal Airport, WA21 mi59 minSE 310.00 miOvercast46°F41°F83%1021.7 hPa

Wind History from PWT (wind in knots)
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Last 24hrCalmCalm3CalmCalmSW6SW3S3SE4CalmCalmS14S10S8S11S75S7S8S14
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2 days agoS7S8S8S6SW8--S7W5SW4SW4SW6S6S7S10S12S10S9--S7S3S4S7S8S9

Tide / Current Tables for Bremerton, Washington
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Bremerton
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Thu -- 02:22 AM PST     0.89 feet Low Tide
Thu -- 07:50 AM PST     Sunrise
Thu -- 09:51 AM PST     12.42 feet High Tide
Thu -- 12:06 PM PST     Moonrise
Thu -- 04:07 PM PST     6.27 feet Low Tide
Thu -- 04:19 PM PST     Sunset
Thu -- 08:25 PM PST     8.25 feet High Tide
Thu -- 10:34 PM PST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.41.811.12.34.36.6910.912.112.411.910.89.37.86.76.36.57.17.78.28.27.56.5

Tide / Current Tables for Port Washington Narrows, North Entrance of, Washington Current
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Port Washington Narrows
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Thu -- 12:40 AM PST     -1.85 knots Max Ebb
Thu -- 02:40 AM PST     0.00 knots Slack
Thu -- 06:40 AM PST     2.84 knots Max Flood
Thu -- 07:50 AM PST     Sunrise
Thu -- 10:51 AM PST     -0.00 knots Slack
Thu -- 12:06 PM PST     Moonrise
Thu -- 02:27 PM PST     -1.60 knots Max Ebb
Thu -- 04:19 PM PST     Sunset
Thu -- 07:52 PM PST     -0.01 knots Min Ebb
Thu -- 10:34 PM PST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-1.8-1.8-0.90.41.42.32.72.82.51.80.9-0.1-0.8-1.3-1.6-1.6-1.3-0.9-0.4-0.1-0-0.2-0.5-0.9

Weather Map and Satellite Images
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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.
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Wind Forecast for Seattle, WA (1,6,7,8)
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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.