Tuesday, October22, 2019 L-36.com


Marine Weather and Tides
Tacoma, 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 7:36AMSunset 6:11PM Tuesday October 22, 2019 7:29 AM PDT (14:29 UTC) Moonrise 12:00AMMoonset 2:53PM Illumination 35% 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- 202 Am Pdt Tue Oct 22 2019
.small craft advisory in effect until 11 am pdt this morning...
Today..NE wind 15 to 25 kt easing to 10 to 20 kt in the afternoon. Wind waves 2 to 4 ft. A slight chance of showers.
Tonight..NE wind 5 to 15 kt. Wind waves 2 ft or less.
Wed..N wind to 10 kt. Wind waves 1 ft or less. Patchy fog in the morning.
Wed night..N wind to 10 kt in the evening becoming light. Wind waves 1 ft or less.
Thu..Light wind. Wind waves 1 ft or less.
Thu night..Light wind. Wind waves 1 ft or less.
Fri..S wind 5 to 15 kt becoming variable to 10 kt. Wind waves 1 to 2 ft.
Sat..Variable wind to 10 kt becoming n. Wind waves 1 ft or less.
PZZ100 202 Am Pdt Tue Oct 22 2019
Synopsis for the northern and central washington coastal and inland waters..The last in a series of frontal systems will push south of the area today. Onshore flow will diminish this afternoon into Wednesday with lighter winds as high pressure builds over the region. The next system will arrive sometime Friday into Saturday.


7 Day Forecast for Marine Location Near Tacoma, WA
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location: 47.27, -122.43     debug


Area Discussion for - Seattle, WA
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Fxus66 ksew 220945
afdsew
area forecast discussion
national weather service seattle wa
245 am pdt Tue oct 22 2019

Synopsis Rain chances will decrease from north to south today
as a frontal system sags further south and out of the area. High
pressure aloft will then start to build into the region from the
west, making way for drier weather Wednesday and Thursday. Rain
chances return Friday as a quick system drops down from british
columbia. Dry weather returns over the weekend as cool northerly
flow develops over the region.

Short term today through Thursday A frontal boundary is
gradually shifting southeastward and nearly out of the CWA this
morning, but not before driving several rivers in the area above
flood stage. Several hours of heavy rain in the warm sector of
the system were focused on the olympics and portions of the
cascades. Flood waves will take some time to travel downstream
over the next 24 hours, but a drying trend will take place today
as an upper level ridge builds into the region. Clouds will thin
late today, but there's plenty of low level moisture hanging
around and it will be slow to clear. Temperatures will be mild
with highs near if not a little above average.

Skies may briefly clear this evening, but light surface gradients
and low level moisture will likely lead to the formation of some
stratus and patchy fog Wednesday morning. That should clear by
midday with low level flow becoming increasingly northerly and
upper level ridging continuing to build into the area. Dry weather
continues Wednesday night into Thursday as upper level ridging
remains in control. It will, however, start to flatten later
Thursday in response to a system moving into the central british
columbia coast. Temperatures through the short term period look to
be seasonal or perhaps just a bit above normal.

Long term Friday through Monday The aforementioned system is
expected to clip washington Friday into Friday night. Best chances
of precipitation look to be across the northern half of the
forecast area and in the mountains. The system carves out a broad
trough over the intermountain west as it departs the area over the
weekend. Dry, cool northerly flow aloft develops over western
washington on the back side of the trough as we get into the
weekend and early next week. Upper ridging remains centered well
offshore. This is a dry pattern for us, but it will become
decidedly cooler with daytime highs in the lower to mid 50s and
the return of chilly nights with many locations seeing overnight
lows in the 30s. 27

Aviation Strong northwest flow aloft continues as a front
departs the area. Low level flow is moderate to strong onshore in
the wake of the front. The air mass is quite moist and stable.

Widespread ifr and low MVFR ceilings will persist across much of
the area through late this afternoon.VFR conditions are possible
for a period this evening, but weakening surface gradients and the
presence of low level moisture could lead to the return of ifr or
low MVFR ceilings in stratus and or fog for portions of the region
on Wednesday morning.

Ksea... Ifr or low MVFR ceilings are expected to persist into this
afternoon with a rather soupy post-frontal air mass over the area.

Some improvement is possible near or after 00z, but stratus and or
fog is expected to become a factor by 12z Wednesday with a few
hours of ifr ceilings possible. Gusty s-sw surface winds will
gradually diminish toward midday then become light and variable or
weak northerly this evening. 27

Marine System continues to drop south of the waters early this
morning. Winds behind it are beginning to relax across the coastal
waters but have extended SCA due to borderline hazardous seas
through the day today (~10 ft at 11 to 12 seconds). Inland, breezy
winds continue with SCA through the morning hours for most of the
inland waters. The exception will be the central and eastern
strait where westerly push is starting to ramp up. Issued a gale
warning earlier tonight to account for strong westerlies that will
continue through the morning hours. Small craft level winds will
likely continue following the gale warning. Winds will then relax
tonight into Wednesday as high pressure finally builds into the
area. Next system arrives sometime Friday into Saturday with
breezier winds. Ceo

Hydrology Over the last 24 hours, 3-6 inches of rain fell in the
central cascades, 2-4 inches fell in the north cascades, and 3-6
inches fell in the western and southern olympics. This rain was
enough to drive several rivers above flood stage. Rain has tapered
considerably as of 2 am.

However, the rivers continue to respond. The snoqualmie river is
forecast to have moderate to major flooding along its length. The
tolt river will as well. Minor flooding is forecast on the
skykomish, stillaguamish, samish, and nooksack rivers. On the
northwest olympic peninsula, where the rain ended soonest, the
bogachiel river is the only river to flood that has turned over
and begun to recede.

The good news is that hydrologically significant precipitation has
just about ended. A front is exiting the region to the southeast,
and the dry weather that is forecast for the next several days
will allow all rivers to fall below flood stage--some as soon as
this morning. The snoqualmie river valley will experience flooding
for the rest of Tuesday at least and possibly into Wednesday. The
crest of the snoqualmie river near carnation is forecast to occur
late Tuesday afternoon, and that reach of the river will not fall
below flood stage until Wednesday morning. Burke

Sew watches warnings advisories
Wa... Flood watch through late tonight for admiralty inlet area-
bellevue and vicinity-cascades of snohomish and king
counties-cascades of whatcom and skagit counties-east puget
sound lowlands-eastern strait of juan de fuca-everett and
vicinity-hood canal area-lower chehalis valley area-north
coast-olympics-seattle and vicinity-western strait of juan
de fuca-western whatcom county.

Pz... Small craft advisory until 11 pm pdt this evening 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 from 9 am this morning to 11 pm pdt this
evening for central u.S. Waters strait of juan de fuca-east
entrance u.S. Waters strait of juan de fuca.

Gale warning until 9 am pdt this morning for central u.S. Waters
strait of juan de fuca-east entrance u.S. Waters strait of
juan de fuca.

Small craft advisory until 11 am pdt this morning for admiralty
inlet-northern inland waters including the san juan islands-
puget sound and hood canal.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
TCMW1 - 9446482 - Tacoma Met, WA 1 mi59 min SSE 4.1 G 6
TCNW1 - 9446484 - Tacoma, WA 1 mi59 min 57°F 55°F1025.3 hPa
46121 16 mi54 min 57°F 1024.9 hPa53°F
WPOW1 - West Point, WA 27 mi89 min ENE 8.9 G 11 53°F 1024.3 hPa (+3.5)53°F
46120 34 mi53 min E 3.9 55°F 1024 hPa51°F
46125 45 mi51 min 5.8 54°F 1023.9 hPa50°F

Wind History for Tacoma MET, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Tacoma / McChord Air Force Base, WA8 mi91 minSSW 710.00 miMostly Cloudy55°F55°F100%1025.1 hPa
Tacoma, Tacoma Narrows Airport, WA8 mi36 minSSW 910.00 miOvercast54°F52°F93%1024.8 hPa
Seattle, Seattle-Tacoma International Airport, WA13 mi36 minSSW 610.00 miOvercast57°F52°F83%1025.7 hPa
Pierce County-Thun Field, WA14 mi54 minWSW 310.00 miFair55°F55°F100%1025.7 hPa
Fort Lewis / Gray U. S. Army Airfield, WA15 mi91 minS 610.00 miMostly Cloudy56°F55°F100%1024.8 hPa
Boeing Field - King County International Airport, WA19 mi36 minN 04.00 miLight Rain Fog/Mist56°F53°F90%1024.9 hPa
Renton Municipal Airport, WA19 mi36 minVar 39.00 miOvercast58°F52°F81%1025.5 hPa
Bremerton, Bremerton National Airport, WA23 mi33 minNE 85.00 miLight Rain Fog/Mist52°F52°F100%1026.5 hPa

Link to 5 minute data for KTIW

Wind History from TIW (wind in knots)
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1 day agoSE3S54S43S5--SW11
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2 days agoCalmS3SW4W5W3SW4SW6SW12
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Tide / Current Tables for Tacoma, Commencement Bay, Washington
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Tacoma
Click for Map
Tue -- 12:21 AM PDT     Moonrise
Tue -- 05:54 AM PDT     0.53 feet Low Tide
Tue -- 07:38 AM PDT     Sunrise
Tue -- 01:31 PM PDT     11.73 feet High Tide
Tue -- 03:53 PM PDT     Moonset
Tue -- 06:09 PM PDT     Sunset
Tue -- 07:34 PM PDT     6.35 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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8.37.25.63.82.20.90.51.12.64.779.210.811.611.6119.88.47.16.46.46.97.68.4

Tide / Current Tables for Discovery Island, 3.3 miles NE of, Washington Current
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Discovery Island
Click for Map
Tue -- 12:21 AM PDT     Moonrise
Tue -- 03:57 AM PDT     -1.45 knots Max Ebb
Tue -- 07:38 AM PDT     Sunrise
Tue -- 08:03 AM PDT     0.00 knots Slack
Tue -- 11:05 AM PDT     1.59 knots Max Flood
Tue -- 02:22 PM PDT     -0.00 knots Slack
Tue -- 03:53 PM PDT     Moonset
Tue -- 05:47 PM PDT     -1.17 knots Max Ebb
Tue -- 06:09 PM PDT     Sunset
Tue -- 10:20 PM PDT     0.00 knots Slack
Tue -- 11:26 PM PDT     0.24 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.3-0.7-1.1-1.3-1.5-1.3-1-0.6-00.81.41.61.410.3-0.3-0.8-1.1-1.2-1-0.8-0.4-0.10.2

Weather Map
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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.
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Wind Forecast for Seattle, WA (10,2,3,4)
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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.