Monday, October23, 2017 L-36.com


Marine Weather and Tides
Issaquah, WA

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 7:38AMSunset 6:05PM Monday October 23, 2017 4:27 AM PDT (11:27 UTC) Moonrise 10:21AMMoonset 7:47PM Illumination 11% Phase: Waxing Crescent; Moon at 3 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- 300 Am Pdt Mon Oct 23 2017
Today..SE wind to 10 kt in the morning becoming light. Wind waves 1 ft or less. Patchy fog in the morning.
Tonight..N wind to 10 kt. Wind waves 1 ft or less. Patchy fog after midnight.
Tue..N wind to 10 kt. Wind waves 1 ft or less. Patchy fog in the morning.
Tue night..N wind to 10 kt in the evening becoming light. Wind waves 1 ft or less.
Wed..Light wind becoming S 5 to 15 kt in the afternoon. Wind waves 2 ft or less.
Wed night..SE wind to 10 kt becoming N after midnight. Wind waves 1 ft or less.
Thu..N wind 5 to 15 kt. Wind waves 2 ft or less.
Fri..N wind to 10 kt. Wind waves 1 ft or less.
PZZ100 300 Am Pdt Mon Oct 23 2017
Synopsis for the northern and central washington coastal and inland waters..A surface ridge forming over western wa will produce weak offshore flow today through Tuesday. A weak cold front will move southeast across the area on Wednesday. Northerly offshore flow will prevail Thursday and Friday as a ridge builds over southern british columbia.

7 Day Forecast for Marine Location Near Issaquah, WA
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location: 47.54, -122.02     debug


Area Discussion for - Seattle, WA
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Fxus66 ksew 231050 cca
afdsew
area forecast discussion
national weather service seattle wa
330 am pdt Sun oct 23 2017

Synopsis High pressure building over the region will provide dry
weather through Tuesday. Residual moisture will produce some morning
fog or low clouds the next couple days. A weak front will move
through the area Wednesday with some spotty light rain. Dry weather
returns Thursday and should prevail through the weekend.

Short term High pressure will build north over the region through
Tuesday providing dry and mild weather. Stable conditions and
residual low level moisture will result in some late night and
morning fog across the lowlands. Satellite imagery and obs indicate
some low clouds around the area this morning. This will mix out by
late morning with afternoon sunshine the next couple days. High
temperatures should run slightly above average, mainly in the lower
60s.

A decaying front will push southeast across the area on Wednesday.

Recent model runs have trended toward a weaker system with marginal
moisture and lift. Rain should be spotty and quite light, probably
less than a tenth for most locations. Kept pops limited to chance
category.

Long term The GFS ecwmf are in agreement in building a strong
ridge of high pressure over the region Thursday through the weekend.

This will provide a longer stretch of dry weather and mostly clear
skies. There may be some patchy morning fog in prone spots,
otherwise sunny skies and near average temperatures are expected.

Mercer

Hydrology All area rivers are now below flood stage, and levels
will continue falling today. The last of the flood warnings for the
snohomish, snoqualmie, and cowlitz rivers will be ended early this
morning. Dry weather is expected through next weekend, except for a
little light rain on Wednesday. Amounts will be too light to have
any affect on rivers. New flooding is not expected the next 7 days.

Aviation An upper level ridge building over the pacnw will
produce moderate westerly flow aloft through tonight. The air mass
has been gradually drying especially at mid and upper levels, but
the lower air mass is still moist enough from the recent rains that
patchy ifr fog or low stratus will continue through around 18z
Monday. Otherwise conditions will beVFR.

Ksea... A bkn017 layer has formed at ksea at 08z which supports a bkn-
ovc low stratus layer 12z-17z. Other stations around the local area
also have low level moisture producing some low stratus.

Surface winds will be SE 3-5kt this morning becoming N this
afternoon. Kam

Marine A surface ridge building over W wa will produce
weak offshore flow today through Tuesday.

Westerly swell 10 to 14 feet this morning, generated by recent
storms, will gradually subside through this evening, falling below
10 feet after midnight. A SCA for hazardous seas will continue
through this evening.

A weak cold front will move southeast across the area on Wednesday,
with small craft advisory winds over the coastal waters and in the
strait of juan de fuca. Northerly offshore flow will follow the
front Thursday and Friday as a ridge builds over southern british
columbia. Kam

Sew watches warnings advisories
Wa... None.

Pz... Small craft advisory for hazardous seas 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 for rough bar until 11 pm pdt this evening
for grays harbor bar.

Small craft advisory for hazardous seas until 5 pm pdt this
afternoon for west entrance u.S. Waters strait of juan de
fuca.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
EBSW1 - 9447130 - Seattle, WA 17 mi40 min S 1.9 G 4.1 53°F 54°F1035 hPa
WPOW1 - West Point, WA 24 mi28 min SSE 7 G 8 53°F 1034.8 hPa (+1.9)49°F
46120 25 mi36 min WSW 7.8 54°F 1034.1 hPa54°F
TCMW1 - 9446482 - Tacoma Met, WA 28 mi40 min S 1.9 G 2.9
TCNW1 - 9446484 - Tacoma, WA 28 mi46 min 48°F 53°F1035.3 hPa

Wind History for Seattle, Puget Sound, WA, WA
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Renton Municipal Airport, WA11 mi35 minSE 310.00 miMostly Cloudy49°F46°F93%1035.3 hPa
Boeing Field - King County International Airport, WA15 mi35 minSE 410.00 miMostly Cloudy50°F46°F89%1034.7 hPa
Seattle, Seattle-Tacoma International Airport, WA17 mi35 minSE 510.00 miOvercast50°F46°F86%1035.4 hPa

Wind History from RNT (wind in knots)
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SE4S10S9S7S5S6SE4CalmCalmSE3S3SE3SE3SE3
1 day agoE3SE43S33SE454E6E73E8E6SE7S9
G15
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2 days agoS5SE4SE4SE5S12
G18
SE6SE8SE10SE9SE8S15
G21
S12
G18
S11SE9SE96SE8SE5E4CalmCalmSE3CalmCalm

Tide / Current Tables for Duwamish Waterway, Washington
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Duwamish Waterway
Click for Map
Mon -- 01:40 AM PDT     0.02 feet Low Tide
Mon -- 07:40 AM PDT     Sunrise
Mon -- 08:33 AM PDT     10.70 feet High Tide
Mon -- 11:21 AM PDT     Moonrise
Mon -- 02:15 PM PDT     5.41 feet Low Tide
Mon -- 06:06 PM PDT     Sunset
Mon -- 07:13 PM PDT     9.43 feet High Tide
Mon -- 08:48 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.60.30.11.135.47.89.610.610.6108.87.365.45.66.67.78.89.49.28.26.74.8

Tide / Current Tables for Restoration Point, 0.6 miles ESE of, Washington Current
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Restoration Point
Click for Map
Mon -- 02:31 AM PDT     0.00 knots Slack
Mon -- 04:54 AM PDT     0.66 knots Max Flood
Mon -- 07:40 AM PDT     Sunrise
Mon -- 08:44 AM PDT     -0.00 knots Slack
Mon -- 11:22 AM PDT     Moonrise
Mon -- 11:45 AM PDT     -0.59 knots Max Ebb
Mon -- 03:29 PM PDT     0.00 knots Slack
Mon -- 04:41 PM PDT     0.20 knots Max Flood
Mon -- 06:06 PM PDT     Sunset
Mon -- 07:06 PM PDT     -0.00 knots Slack
Mon -- 08:49 PM PDT     Moonset
Mon -- 11:18 PM PDT     -0.86 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.8-0.5-0.20.20.60.70.60.40.2-0.1-0.4-0.5-0.6-0.5-0.3-0.10.10.20.10-0.2-0.5-0.7-0.8

Weather Map and Satellite Images
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Weather Map
wmap_P
IR Satellite Image from GEOS
west_satellite

GOES Local Image of PacificNorthwest    EDIT
Geos

Wind Forecast for Seattle, WA (7,2,3,4)
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Ground Weather Radar Station Seattle/Tacoma, WA
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weather_mapweather_map weather_map

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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.