Wednesday, August21, 2019 L-36.com


Marine Weather and Tides
Woodway, WA

Version 3.4
NOTICE
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 6:11AMSunset 8:13PM Wednesday August 21, 2019 4:08 AM PDT (11:08 UTC) Moonrise 10:06PMMoonset 11:19AM Illumination 67% Phase: Waning Gibbous; Moon at 21 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- 301 Am Pdt Wed Aug 21 2019
Today..S wind 10 to 20 kt. Wind waves 1 to 3 ft. Rain.
Tonight..S wind 5 to 15 kt becoming se after midnight. Wind waves 2 ft or less. A chance of showers.
Thu..Light wind becoming N to 10 kt in the afternoon. Wind waves 1 ft or less.
Thu night..N wind to 10 kt becoming ne after midnight. Wind waves 1 ft or less.
Fri..N wind to 10 kt. Wind waves 1 ft or less.
Fri night..N wind to 10 kt becoming variable after midnight. Wind waves 1 ft or less.
Sat..S wind to 10 kt becoming n. Wind waves 1 ft or less.
Sun..SE wind to 10 kt becoming n. Wind waves 1 ft or less.
PZZ100 301 Am Pdt Wed Aug 21 2019
Synopsis for the northern and central washington coastal and inland waters..A weakening front will move through the area today. Onshore flow will develop behind the front tonight and continue through the weekend. A weaker frontal system will approach the area on Friday and dissipate over the area on Saturday.


7 Day Forecast for Marine Location Near Woodway, WA
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location: 47.81, -122.38     debug


Area Discussion for - Seattle, WA
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Fxus66 ksew 210954
afdsew
area forecast discussion
national weather service seattle wa
254 am pdt Wed aug 21 2019

Synopsis A cold front will bring rain to the region today.

Expect dry weather by Thursday afternoon with a weak high pressure
over the area. A series of systems will pass generally to our
north Friday into the weekend keeping temperatures near normal and
bringing a chance of showers mainly to the coast and northern
areas. Warmer and drier conditions are expected to develop early
next week.

Short term today through Friday Light rain ahead of an
approaching frontal system has spread onto the coast early this
morning. There is a distinct lack of cloud cover from the central
puget sound southward as of 2 am pdt, but that is expected to
abruptly change as we approach sunrise this morning. The models
have backed off with QPF with this system as it loses steam
bumping up against a broad ridge over the western us. Nonetheless,
some light rain will spread into puget sound by midday with the
front as it moves through. For north king and snohomish counties,
the best shot of precipitation may actually be with a brief
convergence zone that is expected to develop behind the front this
evening. High temperatures will be considerably cooler across the
interior today with 60s to near 70 common.

The front will shift east of the area tonight with shower activity
lingering... Especially around the convergence zone. That activity
will dissipate by daybreak Thursday as post-frontal onshore flow
relaxes and upper level ridging begins to build back into the
area. We should see a return of some sunshine by mid or late
afternoon Thursday with high temperatures returning to near
normal. Upper level ridging will flatten by Friday as the first of
a series of systems pass by mainly to the north. It may produce an
increase in high and mid clouds later in the day Friday, but most
areas should see a partly sunny day with temperatures similar to
those of Thursday.

Long term Saturday through Tuesday Another system moves to
the north on Saturday. While still rather weak, heights will fall
further and there will be a chance of showers for the coast and
the interior from seattle northward. Partly to mostly cloudy
conditions are expected with temperatures a little below normal.

Sunday looks much the same as the last in the series of upper
level disturbances passes through british columbia.

And this is where things begin to change. For much of the past
few weeks, the longwave pattern has favored upper level troughing
to our west and a broad ridge over the interior west. As the
trough over british columbia pushes eastward early next week, it
is expected to carve out a decent trough over the northern plains
states. In response to this, a fairly high amplitude ridge is
expected to develop over the pacific northwest with 500mb heights
well into the 580s Tuesday and beyond. In addition, a thermal
trough may develop along the coast with low level flow turning
offshore. The models have been hinting at this for a couple days
now. It is still several days out, but we may be looking at at
least a few very warm days to close out the month of august.

Summer isn't over yet... Meteorological or astronomical. 27

Aviation An upper trough and an associated weakening frontal
system will move through the area today. Weak high pressure aloft
will build over the area tonight. The flow aloft will be westerly.

Low level southerly flow ahead of the front will turn westerly
behind the front. The air mass is moist and stable.

Clouds will increase across the area today with lowering ceilings
as a front moves onshore. Low clouds will persist at the coast.

The interior should see increasing mid clouds at first this
morning then low clouds will become widespread this afternoon and
evening.

A weak puget sound convergence zone is possible tonight.

Ksea... High clouds early this morning. Mid clouds will develop
later this morning and then low clouds this afternoon. Low
clouds should persist tonight. Southerly wind 4-8 knots. Schneider

Marine A weakening front will move onshore today with small
craft advisory strength southerly winds. Onshore flow behind the
front will bring small craft advisory strength westerly winds to
the outer coastal waters and for the central and eastern strait of
juan de fuca tonight. Winds in the strait will ease late tonight.

Winds over the outer coastal waters will ease Thursday but there
will probably be another round of small craft advisory strength
west to northwest winds for the coastal waters Thursday evening.

There will also be some 10 to 11 foot seas over the outer coastal
waters on Thursday.

An onshore flow pattern will continue Friday and into the weekend
with the usual diurnal small craft advisory strength west winds in
the strait each evening. A weak frontal system will approach the
area on Friday and then dissipate over the area on Saturday. The
main impact will be to turn the winds a bit more southerly but
speeds should remain sub-advisory strength. Schneider

Hydrology The daily hydrology discussion has ended until the
start of the next rainy season; it will only be updated as needed
until then.

Sew watches warnings advisories
Wa... None.

Pz... Small craft advisory until 11 am pdt Thursday for coastal waters
from CAPE flattery to james island 10 to 60 nm-coastal
waters from james island to point grenville 10 to 60 nm-
coastal waters from point grenville to CAPE shoalwater 10
to 60 nm-northern inland waters including the san juan
islands.

Small craft advisory until 11 am pdt this morning for coastal
waters from CAPE flattery to james island out 10 nm-coastal
waters from james island to point grenville out 10 nm-
coastal waters from point grenville to CAPE shoalwater out
10 nm.

Small craft advisory until 5 am pdt Thursday for east entrance
u.S. Waters strait of juan de fuca.

Small craft advisory from 5 pm this afternoon to 5 am pdt
Thursday for central u.S. Waters strait of juan de fuca.

Small craft advisory until noon pdt today for admiralty inlet.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46120 4 mi38 min SSW 5.8 63°F 1014.4 hPa55°F
WPOW1 - West Point, WA 11 mi69 min S 14 G 15 62°F 1015.5 hPa (+0.0)56°F
PTWW1 - 9444900 - Port Townsend, WA 29 mi57 min E 4.1 G 7 60°F 53°F1014.8 hPa
TCMW1 - 9446482 - Tacoma Met, WA 37 mi57 min SE 5.1 G 5.1
TCNW1 - 9446484 - Tacoma, WA 38 mi57 min 61°F 56°F1016.1 hPa
46121 41 mi32 min 60°F 1015.8 hPa57°F
SISW1 - Smith Island, WA 43 mi79 min SE 15 G 17 64°F 1013.8 hPa (+0.0)53°F
PBFW1 - Padilla Bay Reserve, WA 45 mi39 min S 8.9 65°F 1014 hPa56°F

Wind History for Seattle, Puget Sound, WA, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Everett Snohomish County, WA9 mi76 minSSE 1110.00 miMostly Cloudy63°F54°F73%1015.3 hPa
Boeing Field - King County International Airport, WA20 mi76 minSSE 710.00 miFair63°F54°F73%1015.7 hPa
Renton Municipal Airport, WA23 mi76 minSSE 410.00 miFair61°F55°F84%1016.1 hPa

Link to 5 minute data for KPAE

Wind History from PAE (wind in knots)
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Last 24hrN3N3CalmCalmCalmCalmS43W5W5----S9S8S8----N4------S9--SE11
1 day agoN3N4N4N4--CalmW4--N4W5W7NW7NW4W7W5N6N4--------N3N4Calm
2 days agoCalmN4----CalmS5SW3SW4W4W6CalmW6SW6NW3N8N6N6N6N6--N4----4

Tide / Current Tables for Edmonds, Washington
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Edmonds
Click for Map
Wed -- 03:29 AM PDT     2.85 feet Low Tide
Wed -- 06:12 AM PDT     Sunrise
Wed -- 09:31 AM PDT     8.28 feet High Tide
Wed -- 12:18 PM PDT     Moonset
Wed -- 03:15 PM PDT     3.68 feet Low Tide
Wed -- 08:11 PM PDT     Sunset
Wed -- 09:35 PM PDT     10.12 feet High Tide
Wed -- 11:05 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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7.35.53.9333.756.37.58.28.27.66.65.44.33.73.94.96.37.89.210109.3

Tide / Current Tables for President Point, 1.5 mile E of, Washington Current
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President Point
Click for MapFlood direction 203 true
Ebb direction 24 true

Wed -- 12:11 AM PDT     -0.50 knots Max Ebb
Wed -- 04:51 AM PDT     0.00 knots Slack
Wed -- 06:12 AM PDT     Sunrise
Wed -- 06:28 AM PDT     0.19 knots Max Flood
Wed -- 09:27 AM PDT     -0.00 knots Slack
Wed -- 12:16 PM PDT     -0.35 knots Max Ebb
Wed -- 12:18 PM PDT     Moonset
Wed -- 04:21 PM PDT     0.00 knots Slack
Wed -- 06:21 PM PDT     0.24 knots Max Flood
Wed -- 08:11 PM PDT     Sunset
Wed -- 09:32 PM PDT     -0.00 knots Slack
Wed -- 11:06 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.5-0.5-0.4-0.3-0.100.20.20.10-0.1-0.3-0.3-0.3-0.3-0.2-00.10.20.20.20.1-0.1-0.3

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 (7,2,3,4)
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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.