Wednesday, June28, 2017 L-36.com


Marine Weather and Tides
Manchester, 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 5:13AMSunset 9:13PM Wednesday June 28, 2017 10:24 AM PDT (17:24 UTC) Moonrise 9:49AMMoonset 11:25PM Illumination 22% Phase: Waxing Crescent; Moon at 5 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- 859 Am Pdt Wed Jun 28 2017
Today..Light wind becoming S 5 to 15 kt in the afternoon. Wind waves 2 ft or less.
Tonight..Variable wind 5 to 15 kt becoming S after midnight. Wind waves 2 ft or less.
Thu..Light wind becoming N to 10 kt in the afternoon. Wind waves 1 ft or less.
Thu night..NW wind 5 to 15 kt in the evening becoming light. Wind waves 2 ft or less.
Fri..Light wind becoming variable to 10 kt in the afternoon. Wind waves 1 ft or less.
Fri night..NW wind 5 to 15 kt in the evening becoming light. Wind waves 2 ft or less.
Sat..Light wind becoming N to 10 kt. Wind waves 1 ft or less.
Sun..NE wind to 10 kt becoming n. Wind waves 2 ft or less.
PZZ100 859 Am Pdt Wed Jun 28 2017
Synopsis for the northern and central washington coastal and inland waters..High pressure offshore with low pressure east of the cascades will maintain onshore flow of varying strength through this weekend. The flow will become strong enough Friday afternoon and evening for the possibility of gale force winds over parts of the strait of juan de fuca.

7 Day Forecast for Marine Location Near Manchester, WA
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location: 47.57, -122.53     debug


Area Discussion for - Seattle, WA
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Fxus66 ksew 281554
afdsew
area forecast discussion
national weather service seattle wa
900 am pdt Wed jun 28 2017

Synopsis A surface ridge offshore will maintain onshore flow into
early next week. This will produce typical early summer weather with
mild temperatures, morning low clouds, and afternoon sunshine. An
upper level ridge will weaken the onshore flow and produce a minor
warming trend Thursday and Friday. Stronger onshore flow will bring
more cloud cover this weekend, and possibly light rain to the coast.

Short term Satellite imagery shows stratus has filled in most of
the lowlands this morning. The mountains, especially the olympics,
are mostly sunny. Today will be quite similar to Tuesday with low
level onshore flow continuing. Model cross sections show the marine
layer depth pretty similar to yesterday. End result is a persistence
forecast for today with the stratus burning back to the coast
midday. High will be similar to Tuesday's readings with mid 60s
along the coast and mid 60s to mid 70s inland.

The upper level ridge offshore will move east later today and
tonight. 500 mb heights will rise over the area with the ridge axis
just offshore at 12z Thursday. Low level onshore flow will weaken,
resulting in less morning cloud cover for the interior Thursday
morning. With less cloud cover and the warming temperatures aloft,
highs on Thursday will be a few degrees warmer with mid and upper
60s on the coast and 70s common over the interior. Lows tonight
will mostly be in the 50s.

The upper level ridge will move through the area Thursday night into
Friday morning with 500 mb heights peaking in the lower to mid 580
dms. Onshore pressure gradients don't begin to increase again until
Friday afternoon making for a mostly sunny day across most of the
area on Friday. Friday will be the warmest day in the forecast
period with some lower 80s from seattle south. North of seattle 70s
will be common with highs near 70 on the coast. Burke felton

Long term Previous discussion... Extended models in good agreement
for the weekend with zonal flow aloft and low level onshore flow on
Saturday for morning clouds and some afternoon sunshine over the
interior. A weak trough approaches the coast on Sunday for a slight
chance of showers in the morning. Low level onshore flow remaining
intact through Monday with a weak trough remaining over the area for
a continuation of the morning clouds with some afternoon sunshine
scenario for the interior. Some differences show up in the models
for the 4th with the GFS beginning to build a ridge while the
ecmwf keeps the weak trough in the area. Both solutions are dry.

Current forecast is closer to the less cloud cover a few degrees
warmer GFS solution. Will stay with that idea for the morning
forecast package. Felton

Aviation Upper level high pressure offshore will slowly make its
way eastward today with flow aloft mainly from the northwest. Low
level flow will remain onshore. Low level stratus are expected to
linger through the morning hours... Resulting in CIGS generally
remaining in the MVFR range in many locations... Before starting to
break up between 18-21z... With partly sunny skies expected afterward.

Ksea... Above discussion applies... Although would narrow the time
frame for stratus burn-off slightly... Probably happening between 18-
20z. Winds southwesterly 6-10 kts turning northerly by this evening.

Smr

Marine Higher pres offshore with lower pres E of the cascades
will maintain onshore flow of varying strength through the week.

Inherited forecast suggests the prospect for low end SCA winds for
the strait this evening and tonight. Will await new model data and
make decision on whether or not a headline is needed for afternoon
forecast package. This onshore flow is expected to strengthen Friday
afternoon and evening for the possibility of gale force winds over
parts of the strait of juan de fuca.

Sew watches warnings advisories
Wa... None.

Pz... Small craft advisory for central and east strait late this
afternoon and tonight.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
WPOW1 - West Point, WA 8 mi84 min S 11 G 12 55°F 1017.1 hPa (+0.7)51°F
EBSW1 - 9447130 - Seattle, WA 10 mi54 min SSW 7 G 8 58°F 53°F1017.1 hPa
TCMW1 - 9446482 - Tacoma Met, WA 21 mi54 min WSW 6 G 9.9
TCNW1 - 9446484 - Tacoma, WA 22 mi54 min 60°F 53°F1017.3 hPa
46121 23 mi48 min 7.8 57°F 1016.3 hPa51°F
PTWW1 - 9444900 - Port Townsend, WA 39 mi54 min N 5.1 G 5.1 54°F 51°F1017.4 hPa

Wind History for Seattle, Puget Sound, WA, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Boeing Field - King County International Airport, WA12 mi31 minSW 610.00 miOvercast59°F53°F81%1017.1 hPa
Bremerton, Bremerton National Airport, WA14 mi28 minSSW 810.00 miOvercast57°F51°F81%1018.7 hPa
Seattle, Seattle-Tacoma International Airport, WA15 mi31 minSSW 1010.00 miOvercast59°F50°F72%1017.8 hPa
Renton Municipal Airport, WA17 mi31 minS 410.00 miOvercast60°F51°F72%1017.6 hPa
Tacoma, Tacoma Narrows Airport, WA21 mi31 minSSW 710.00 miOvercast57°F50°F78%1017.2 hPa

Wind History from BFI (wind in knots)
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Last 24hrSW76W73SW6Calm3CalmCalmCalmE3CalmW5NW3W4CalmS4S5S5SW66S8S7SW6
1 day agoS9S11
G19
55SW9S76S63S83S5S5S5S8S8S7S8S5SW6S5S55SW6
2 days agoNW653NW5N8NW7NW8NW1056CalmNW4CalmNW4S6S8S10S8SE7W5SW5S5SW5SW5

Tide / Current Tables for Clam Bay, Rich Passage, Washington
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Clam Bay
Click for Map
Wed -- 03:16 AM PDT     5.36 feet Low Tide
Wed -- 05:15 AM PDT     Sunrise
Wed -- 08:12 AM PDT     9.36 feet High Tide
Wed -- 10:49 AM PDT     Moonrise
Wed -- 02:55 PM PDT     -0.64 feet Low Tide
Wed -- 09:11 PM PDT     Sunset
Wed -- 10:13 PM PDT     12.53 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
9.87.76.15.45.66.57.78.89.39.186.23.91.6-0.1-0.60.124.57.49.911.712.512.2

Tide / Current Tables for Rich Passage, West end, Washington Current
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Rich Passage
Click for Map
Wed -- 01:10 AM PDT     -3.26 knots Max Ebb
Wed -- 03:52 AM PDT     0.00 knots Slack
Wed -- 05:15 AM PDT     Sunrise
Wed -- 06:19 AM PDT     1.26 knots Max Flood
Wed -- 09:03 AM PDT     -0.00 knots Slack
Wed -- 10:49 AM PDT     Moonrise
Wed -- 12:42 PM PDT     -3.67 knots Max Ebb
Wed -- 03:06 PM PDT     0.00 knots Slack
Wed -- 06:54 PM PDT     4.13 knots Max Flood
Wed -- 09:11 PM PDT     Sunset
Wed -- 11:04 PM PDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-2.6-3.2-2.8-1.40.10.91.21.20.80.1-1.2-2.5-3.5-3.6-2.4-0.21.52.93.84.13.82.91.60.1

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 (13,3,4,5)
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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.