Thursday, September21, 2017 L-36.com


Marine Weather and Tides
Southworth, 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 6:56AMSunset 7:09PM Thursday September 21, 2017 2:21 PM PDT (21:21 UTC) Moonrise 7:25AMMoonset 7:14PM Illumination 1% Phase: Waxing Crescent; Moon at 1 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 Thu Sep 21 2017
Today..Variable wind to 10 kt becoming N in the afternoon. Wind waves 1 ft or less. A slight chance of showers.
Tonight..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. Patchy fog in the morning.
Fri night..Light wind. Wind waves less than 1 ft.
Sat..S wind to 10 kt in the morning becoming light. Wind waves 1 ft or less.
Sat night..NW wind to 10 kt in the evening becoming light. Wind waves 1 ft or less.
Sun..Light wind becoming N to 10 kt. Wind waves less than 1 ft.
Mon..Light wind becoming N to 10 kt. Wind waves less than 1 ft.
PZZ100 859 Am Pdt Thu Sep 21 2017
Synopsis for the northern and central washington coastal and inland waters..Low pressure over western washington will shift east of the cascades this afternoon. Another surface low around 1010 mb will develop off vancouver island tonight and move south through the washington coastal waters Thursday. High pressure will build over the area Friday and remain over the area through Monday.

7 Day Forecast for Marine Location Near Southworth, WA
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location: 47.52, -122.52     debug


Area Discussion for - Seattle, WA
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Fxus66 ksew 211635
afdsew
area forecast discussion
national weather service seattle wa
935 am pdt Thu sep 21 2017

Synopsis An upper level trough will maintain a chance of
showers and cooler temperatures over western washington today,
mainly over the mountains and over the lowlands from seattle
southward. Drier north flow aloft from an offshore upper level ridge
will bring sunshine and a little warming Friday and Saturday. The
weakening ridge will move over the area Sunday and Monday but could
allow transient weak weather systems to bring some spotty light
rain. The ridge will build Tuesday or Wednesday for mostly sunny
weather.

Short term A large upper level trough centered over E wa and ne
oregon this morning will maintain somewhat moist n-ne flow aloft
over W wa today. Radar is picking up small showers forming over n
puget sound which are drifting S over the SW interior. This could be
just left over activity from earlier this morning as the new 12z
nam, 06z gfs, and 12z nam MOS guidance are all dry for the north
part of puget sound and the N interior today. 15z IR imagery
suggests a little reduction in the cloud cover over vancouver b.C.

And parts of the NW interior, so will go with the latest guidance
and hold off on expanding lowland showers today. Otherwise, guidance
agrees that the cascades and olympics will have scattered showers
today as will the lowlands S of the olympics,
the oregon upper level trough and the upstream upper level ridge
over the NE pacific will both slide a bit E tonight and Friday. The
flow aloft should dry enough to end the chance of showers for
everywhere except the cascades. The upper level ridge will tilt e
over southern b.C. By Saturday. There will be a lot of flow through
the ridge both Friday and Saturday which will allow mid and high
level moisture to move across W wa at times. There will be more
sunshine than today, but still periods of cloudiness. The warming
and drying from the ridge should be enough to push area high
temperatures into the lower to mid 60s, which would be just a little
below normal.

The weak upper level ridge remains in place over S b.C. On Sunday
but the models differ on whether a system moving through the ridge
will be strong enough to bring rain to W wa. The 06z GFS is the
wettest, bringing light rain to just about all of W wa. The 00z
ecmwf and 00z canadian models keep all the precip up over b.C. The
current forecast compromises between the two solutions with low
chance pops over the N part of W wa. Kam

Long term Previous discussion from the 335 am afd... The upper
level ridge persists Monday and into midweek keeping the area
relatively dry... Although each model shows a bit of moisture and
thus the potential for showers to dip south enough to be right on
the doorstep... But never really panning out. Not helping matters is
that there is really not much in the way of agreement as to which
systems or which days this will occur. Feels like a bit of a cop
out... But best course of action is to keep the forecast painted in
broad strokes with slight chance pops for much of the extended until
models can gel on something resembling a singular solution.

Regardless of precip... Should continue to see temperatures gradually
climb into the 70s for many locations for the first half of next
week. Smr

Aviation A broad upper level trough over the interior pacific
northwest will slowly migrate to the southeast through Thursday.

High pressure centered along 140w will persist, maintaining light
northerly flow aloft. The air mass is generally stable and somewhat
moist, mainly in the lower levels. Northerly flow will allow the air
mass to dry tonight and Thursday.

Cigs are variable across western wa this morning. Areas of ifr cigs
and vis are mostly affecting the southwest interior and
south central puget sound. Residual showers are also causing some
ifr conditions at the ksea kbfi terminals and pwt (bremerton).

Conditions should improve to mostlyVFR by midday and scatter out
this afternoon.

Ksea... Light southwest flow to 5 kt will become north-northwest by
early this afternoon. Northeast flow just above the surface and low
level moisture will cause ifr CIGS W showers as late as 18z.

Conditions should improve toVFR by midday and clouds will scatter
later in the day.

Marine Weak surface low over interior western wa will move
east of the cascades today. Another weak low will move south through
the coastal waters later tonight and Thursday. High pressure
building on Friday with high pressure remaining over the area into
the early part of next week. Winds are forecast to remain below 20
knots across the waters. Dtm

Sew watches warnings advisories
Wa... None.

Pz... None.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
WPOW1 - West Point, WA 11 mi82 min S 1.9 G 2.9 55°F 1014.4 hPa (+0.4)50°F
EBSW1 - 9447130 - Seattle, WA 11 mi52 min W 2.9 G 2.9 56°F 56°F1014.3 hPa
TCNW1 - 9446484 - Tacoma, WA 18 mi52 min 57°F 55°F1014.6 hPa
TCMW1 - 9446482 - Tacoma Met, WA 18 mi52 min N 1.9 G 1.9
46120 18 mi47 min NE 3.9 55°F 1013.6 hPa50°F
46121 20 mi46 min 3.9 55°F 1013.9 hPa50°F
PTWW1 - 9444900 - Port Townsend, WA 43 mi52 min NW 6 G 8.9 60°F 52°F1014.7 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 mi29 minVar 310.00 miMostly Cloudy59°F48°F69%1014 hPa
Seattle, Seattle-Tacoma International Airport, WA12 mi29 minVar 310.00 miMostly Cloudy57°F48°F72%1014.8 hPa
Bremerton, Bremerton National Airport, WA14 mi26 minN 010.00 miMostly Cloudy59°F46°F62%1015.9 hPa
Renton Municipal Airport, WA16 mi29 minN 010.00 miOvercast58°F53°F84%1014.5 hPa
Tacoma, Tacoma Narrows Airport, WA18 mi29 minSSW 410.00 miOvercast56°F50°F81%1014.5 hPa

Wind History from BFI (wind in knots)
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Last 24hrSE6W6SW3S4SW4S5E4SE4SE4SE5SE4SE7SE5SE7SE7SE5SE5SE5W3W33Calm43
1 day agoSW5W3Calm4NW4CalmE3SE6E3E4Calm3CalmCalmCalmCalmCalm3433NW3CalmCalm
2 days agoSW10SW5SE6SE10S4SE6S9S9SE10SE10SE8SE9SE6SE7SE8S8S11S6S7S7SW106S8S8

Tide / Current Tables for Harper, Yukon Harbor, Washington
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Harper
Click for Map
Thu -- 12:12 AM PDT     2.10 feet Low Tide
Thu -- 06:10 AM PDT     10.80 feet High Tide
Thu -- 06:55 AM PDT     Sunrise
Thu -- 08:24 AM PDT     Moonrise
Thu -- 12:19 PM PDT     1.71 feet Low Tide
Thu -- 06:30 PM PDT     11.50 feet High Tide
Thu -- 07:09 PM PDT     Sunset
Thu -- 08:13 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.12.546.18.31010.810.59.27.24.82.81.823.45.78.110.211.311.410.48.563.6

Tide / Current Tables for Skagit Bay, 1 mile N of Rocky Point, Washington Current
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Skagit Bay
Click for Map
Thu -- 01:16 AM PDT     0.00 knots Slack
Thu -- 04:50 AM PDT     0.81 knots Max Flood
Thu -- 06:33 AM PDT     -0.00 knots Slack
Thu -- 06:55 AM PDT     Sunrise
Thu -- 08:24 AM PDT     Moonrise
Thu -- 11:46 AM PDT     -1.19 knots Max Ebb
Thu -- 01:23 PM PDT     0.00 knots Slack
Thu -- 05:03 PM PDT     0.84 knots Max Flood
Thu -- 06:49 PM PDT     -0.00 knots Slack
Thu -- 07:09 PM PDT     Sunset
Thu -- 08:13 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-1.2-0.30.30.60.80.80.4-0.1-0.5-0.8-1-1.2-1.2-0.40.20.50.80.80.6-0.1-0.4-0.8-1-1.2

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 (17,4,5,8)
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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.