Friday, March22, 2019 L-36.com


Marine Weather and Tides
Navy Yard City, WA

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 7:07AMSunset 7:27PM Friday March 22, 2019 4:57 AM PDT (11:57 UTC) Moonrise 8:46PMMoonset 7:26AM Illumination 98% Phase: Waning Gibbous; Moon at 16 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- 421 Am Pdt Fri Mar 22 2019
.small craft advisory in effect from 2 pm pdt this afternoon through late tonight...
Today..S wind 5 to 15 kt rising to 15 to 25 kt in the afternoon. Wind waves 2 ft or less building to 2 to 4 ft in the afternoon. A chance of rain in the afternoon.
Tonight..S wind 15 to 25 kt. Wind waves 2 to 4 ft. Rain likely in the evening then a slight chance of showers after midnight.
Sat..S wind 5 to 15 kt becoming to 10 kt in the afternoon. Wind waves 2 ft or less. A slight chance of showers in the morning then a chance of showers in the afternoon.
Sat night..NW wind 5 to 15 kt becoming to 10 kt after midnight. Wind waves 2 ft or less.
Sun..S wind to 10 kt. Wind waves 1 ft or less.
Sun night..N wind to 10 kt becoming 5 to 15 kt after midnight. Wind waves 2 ft or less.
Mon..NE wind to 10 kt becoming S 5 to 15 kt. Wind waves 2 ft or less.
Tue..Light wind. Wind waves less than 1 ft.
PZZ100 421 Am Pdt Fri Mar 22 2019
Synopsis for the northern and central washington coastal and inland waters..A front will affect area waters today with strengthening southerly winds most waters and onshore flow through the strait. Significant westerly swell will also affect the coastal waters and west entrance to the strait of juan de fuca tonight through Saturday.


7 Day Forecast for Marine Location Near Navy Yard City CDP, WA
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location: 47.55, -122.65     debug


Area Discussion for - Seattle, WA
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Fxus66 ksew 220954
afdsew
area forecast discussion
national weather service seattle wa
254 am pdt Fri mar 22 2019

Synopsis A weak front will lift northeast across the area this
afternoon and evening bringing an increase in clouds and some
light rain to the area. Breezy to windy conditions can be expected
with the front this evening. Cool weather with showers can be
expected on Saturday as a weak upper trough moves across the
region. Then it will be dry on Sunday. Another front will bring
precipitation to the area on Monday. Then unsettled weather will
continue into next week.

Short term today through Sunday A negatively tilted frontal
system that connects a system moving into central california with
a deep low in the gulf of alaska will lift northeastward across
the region this afternoon and this evening. Expect clouds to
thicken and light rain to spread into the area from the southwest
mainly this afternoon and evening. Mesoscale models continue to
show breezy to locally windy conditions developing this evening as
southerly pressure gradients tighten with the front, but winds are
expected to remain below advisory criteria.

Behind the front, expect partly cloudy to mostly cloudy conditions
with showers on Saturday as a weak upper level trough moves across
the area. At this time it appears that instability and upper level
diffluence will be greatest over western oregon on Saturday, so
will leave thunderstorms out of the forecast for now.

Low level flow will tend to become north to northeasterly on
Sunday as high pressure builds over southwestern british columbia
and the next negatively tilted frontal system approaches the area
from the southwest. So the idea of a dry day on Sunday still looks
good.

Temperatures in the short term appear that they will be near
normal for late march with highs in the mid 50s to lower 60s and
lows in the upper 30s to mid 40s for the most part. Albrecht

Long term Monday through Thursday Models are consistent on
Monday in showing another frontal system lifting into the area
from the south and southwest. This will result in more rain later
Monday followed by a showery pattern later Monday night into
Tuesday. Expect temperatures on Monday to be slightly cooler than
normal with the precipitation, then near normal temperatures are
expected on Tuesday with the showers.

The forecast Wednesday and beyond gets more challenging as models
develop a strong ridge over the gulf of alaska allowing cool high
pressure over the northwest territories of canada to drop
southward into british columbia and alberta. At lower latitudes, a
strong jet stream continues to move into central and southern
portions of california mid to late week. Western washington is
left between the two streams with possible offshore flow - but
also possibly a frontal system camped over the area. No changes
were made to the forecast from Wednesday onward for now. Albrecht

Aviation Cloud cover encompasses the majority of the area this
morning as a frontal system slowly approaches the region from the
west. Recent trends in observations actually depict clear skies from
hoquiam over to olympia, with partly to mostly cloudy skies to the
east and north. Ceilings are largely MVFR andVFR and this should
continue into thru the morning hours ahead of the front. Will likely
see a few breaks in clouds at times. Winds early this morning range
from calm to S SE around 5-6kts.

As the front approaches the coast by the afternoon, additional cloud
cover is expected-mostlyVFR but some higher end MVFR is possible as
well. Along with the clouds, rain will begin to spread across the
area and winds will begin to pick up towards 10-12kts. As the rain
along the front pushes west to east Friday evening and Friday night,
rain will decrease in coverage and give way to scattered showers.

Ceilings may also drop to MVFR behind the front. Winds will maintain
a southerly component with speeds dropping back below 10kts.

Ksea... GenerallyVFR through the evening hours, with a few breaks in
the clouds this morning ahead of the front. Front will push into the
area this afternoon and evening, bringing rain showers. Rain showers
will taper into Saturday with a chance for MVFR CIGS early Saturday
morning. Winds generally south at less than 5kts, then increasing to
near 10kts this afternoon.

Marine Increasing southerly winds this morning will result
in small craft advisory conditions most area waters through this
evening, with small craft advisory westerlies through the central
and east strait this evening. In addition, significant westerly
swell - 10 to 12 feet - will reach the coastal waters and west
entrance Friday night through Saturday. Winds and seas will ease
Sunday.

Hydrology No river flooding expected over the next seven days.

Sew watches warnings advisories
Wa... None.

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 james island to point grenville 10 to
60 nm-coastal waters from point grenville to cape
shoalwater 10 to 60 nm.

Small craft advisory from 11 am this morning to 11 pm pdt this
evening 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 from 2 pm this afternoon to 5 am pdt
Saturday for east entrance u.S. Waters strait of juan de
fuca.

Small craft advisory from 5 pm this afternoon to 5 am pdt
Saturday for northern inland waters including the san juan
islands.

Small craft advisory from 2 pm this afternoon to midnight pdt
tonight for admiralty inlet.

Small craft advisory from 2 pm this afternoon to 3 am pdt
Saturday for puget sound and hood canal.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
WPOW1 - West Point, WA 14 mi58 min Calm G 1.9 46°F 1015.3 hPa (-1.3)44°F
46121 19 mi43 min 44°F 1015 hPa42°F
46120 20 mi47 min W 1.9 48°F 1014 hPa44°F
TCMW1 - 9446482 - Tacoma Met, WA 23 mi46 min NW 4.1 G 4.1
TCNW1 - 9446484 - Tacoma, WA 23 mi46 min 50°F 48°F1015.4 hPa
46125 25 mi45 min 3.9 45°F 1014.3 hPa43°F
PTWW1 - 9444900 - Port Townsend, WA 39 mi46 min SE 2.9 G 4.1 47°F 48°F1015.4 hPa

Wind History for Seattle, Puget Sound, WA, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Bremerton, Bremerton National Airport, WA8 mi62 minN 01.50 miFog/Mist35°F34°F96%1017.2 hPa
Boeing Field - King County International Airport, WA19 mi65 minN 010.00 miFair49°F42°F77%1015 hPa
Seattle, Seattle-Tacoma International Airport, WA20 mi65 minSE 410.00 miMostly Cloudy50°F43°F77%1015.5 hPa
Tacoma, Tacoma Narrows Airport, WA20 mi65 minN 010.00 miFair43°F39°F89%1015.2 hPa
Renton Municipal Airport, WA23 mi65 minN 010.00 miOvercast50°F43°F77%1015.6 hPa

Wind History from PWT (wind in knots)
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Last 24hrSW5S4SW3SW3SW7SW9S12
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S13--SW6SW5S5CalmCalmSW4CalmCalmCalmCalm
1 day agoNE4CalmCalmCalmNE4NE5NE6NE6NE9
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N8NE9NE9NE8NE5CalmSW8SW4CalmCalmSW4CalmCalm
2 days agoN3NE4N43NE3NE6E5W44Calm3N4NE8NE10NE8NE8NE7NE4NE6CalmCalmNE5CalmNE4

Tide / Current Tables for Bremerton, Washington
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Bremerton
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Fri -- 12:30 AM PDT     0.88 feet Low Tide
Fri -- 06:48 AM PDT     12.84 feet High Tide
Fri -- 07:09 AM PDT     Sunrise
Fri -- 08:25 AM PDT     Moonset
Fri -- 01:08 PM PDT     1.21 feet Low Tide
Fri -- 07:14 PM PDT     11.62 feet High Tide
Fri -- 07:26 PM PDT     Sunset
Fri -- 09:46 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.11.12.55810.612.412.811.9107.24.42.21.21.83.56.18.710.711.611.39.97.75.2

Tide / Current Tables for Port Washington Narrows, North Entrance of, Washington Current
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Port Washington Narrows
Click for Map
Fri -- 12:53 AM PDT     0.00 knots Slack
Fri -- 04:26 AM PDT     3.62 knots Max Flood
Fri -- 07:09 AM PDT     Sunrise
Fri -- 08:03 AM PDT     -0.00 knots Slack
Fri -- 08:25 AM PDT     Moonset
Fri -- 11:38 AM PDT     -2.91 knots Max Ebb
Fri -- 01:28 PM PDT     0.00 knots Slack
Fri -- 04:57 PM PDT     3.44 knots Max Flood
Fri -- 07:26 PM PDT     Sunset
Fri -- 08:34 PM PDT     -0.00 knots Slack
Fri -- 09:46 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-20.21.72.93.63.52.81.60.1-1.1-2.2-2.8-2.8-1.10.92.23.13.43.12.20.9-0.5-1.5-2.3

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.