Friday, May25, 2018 L-36.com


Marine Weather and Tides
Snoqualmie, WA

Version 3.4
What's New / NOTES
5/20/2018 -- NOAA is having problems with the data feed that I use to draw the graphs. They are aware of the issue and working to resolve it. Sometimes changing the location by about a mile will give a correct graph. 3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.

Sunrise 5:17AMSunset 8:53PM Friday May 25, 2018 11:55 AM PDT (18:55 UTC) Moonrise 3:43PMMoonset 2:51AM Illumination 83% Phase: Waxing Gibbous; Moon at 11 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- 857 Am Pdt Fri May 25 2018
Today..NW wind to 10 kt becoming N in the afternoon. Wind waves 1 ft or less.
Tonight..N wind 5 to 15 kt becoming S after midnight. Wind waves 2 ft or less. A slight chance of drizzle after midnight.
Sat..S wind to 10 kt. Wind waves 1 ft or less. A slight chance of drizzle in the morning.
Sat night..NW wind to 10 kt becoming variable after midnight. Wind waves 1 ft or less.
Sun..Light wind becoming nw 5 to 15 kt in the afternoon. Wind waves 2 ft or less.
Sun night..NW wind 5 to 15 kt becoming variable after midnight. Wind waves 2 ft or less.
Mon..SE wind to 10 kt becoming n. Wind waves 1 ft or less.
Tue..Light wind becoming N to 10 kt. Wind waves 1 ft or less.
PZZ100 857 Am Pdt Fri May 25 2018
Synopsis for the northern and central washington coastal and inland waters..Moderate to strong onshore flow will continue through the memorial day weekend. This will lead to near gale or gale force winds over the central and eastern strait of juan de fuca, mainly during the late afternoon through overnight hours through this weekend. The strongest onshore flow is expected this evening.

7 Day Forecast for Marine Location Near Snoqualmie, WA
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location: 47.53, -121.84     debug


Area Discussion for - Seattle, WA
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Fxus66 ksew 251629
afdsew
area forecast discussion
national weather service seattle wa
930 am pdt Fri may 25 2018

Synopsis Today will be dry and any clouds should dissipate.

Onshore surface flow will increase tonight, bringing marine clouds
inland along with areas of drizzle Saturday. The pattern will remain
similar through memorial day. Next week will be a little cooler.

Short term There are clouds over most of the interior this
morning, but the coast, olympics, and northwest interior are mostly
clear. Most of the cloudiness will evaporate this afternoon and
especially this evening. Little if any drizzle will fall out of the
clouds today. Highs today will be 65-70 over the interior, with
lower 60s on the coast.

Onshore flow will increase tonight. Westerly gales are likely in the
strait tonight, and marine stratus will arrive over the interior
late tonight. The marine layer is likely to be thick enough to
produce areas of drizzle. High temperatures will again be in the 60s.

Onshore surface flow will weaken considerably Saturday night and
Sunday. This will mean fewer clouds and no drizzle on Sunday. With
plenty of sunshine, temperatures will be higher, with mid 60s on the
coast and low to mid 70s inland. Burke

Long term Previous discussion... Memorial day is still expected to
be dry, and temperatures should be about the same or slightly lower
than on Sunday. So, it still looks like a nice day for outdoor
activities.

The GFS and canadian models were now close to the ECMWF solution
in regards to the timing of the midweek system. Thus, the ecmwf
was the model of preference for this period (memorial day thru
Thursday). Expect onshore flow to strengthen on memorial day in
response to the approaching upper level trof. This trof will move
the area on Tuesday for cooler and cloudier conditions. The models
were drier with this system; therefore, decided to confine the
mention of showers to the puget sound convergence zone and the
north cascades.

The pacific northwest will remain under the influence of low
pressure aloft Wednesday through Thursday for below normal temps.

There will be a chance of showers over mainly the mountains and
within the puget sound convergence zone.

Aviation The tail end of a weak upper trough will brush by
western washington late today. This will strengthen low-level
onshore flow. Current marine clouds over the interior will burn
off around mid-afternoon. Expecting greater coverage of marine
clouds and somewhat lower CIGS on Saturday am. Moderate southwest
flow aloft today will become weak northwesterly on Saturday. The
air mass will be stable, with a moist marine lower down low and
dry air above.

Ksea... Stratus burnoff now expected around 21z. Winds will be
light and variable until 21z, then pick up a bit out of the north.

A turn back to light southerly wind is expected late this evening,
in the 05z-07z time frame. More marine clouds on Saturday morning,
with CIGS below 020 expected. Haner

Marine Moderate to strong onshore flow will continue through
the memorial day weekend. This will lead to near gale or gale
force winds over the central and eastern strait of juan de fuca,
mainly during the late afternoon through overnight hours through
this weekend. The strongest onshore flow is expected this evening.

Gale warnings are in effect for the central and eastern strait
during the normal diurnal peak this evening. Haner

Sew watches warnings advisories
Wa... None.

Pz... Small craft advisory until midnight pdt tonight for coastal
waters from point grenville to CAPE shoalwater out 10 nm.

Gale warning until 3 am pdt Saturday for central u.S. Waters
strait of juan de fuca-east entrance u.S. Waters strait of
juan de fuca.

Small craft advisory from 2 pm this afternoon to 3 am pdt
Saturday for admiralty inlet-northern inland waters
including the san juan islands.

Small craft advisory until 9 pm pdt this evening 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 27 mi85 min W 5.1 G 6 55°F 52°F1017.9 hPa
WPOW1 - West Point, WA 33 mi115 min N 7 G 8 54°F 1017.9 hPa (+0.0)47°F
46120 34 mi84 min SSE 9.7 54°F 1017.2 hPa49°F
TCNW1 - 9446484 - Tacoma, WA 35 mi85 min 56°F 52°F1017.9 hPa
TCMW1 - 9446482 - Tacoma Met, WA 35 mi85 min NW 4.1 G 4.1
46125 49 mi79 min Calm 54°F 1017.3 hPa46°F

Wind History for Seattle, Puget Sound, WA, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Renton Municipal Airport, WA20 mi62 minNNW 410.00 miOvercast59°F48°F67%1017.8 hPa
Boeing Field - King County International Airport, WA24 mi62 minENE 410.00 miOvercast59°F46°F64%1017.4 hPa

Wind History from RNT (wind in knots)
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Last 24hrCalm363NW6N6N5NW6NW5NW5NW5W7NW8NW9N5N7N4CalmNW7NW7NW6NW5N6NW4
1 day agoN5N6NW5N5N5NW4CalmNW4W7SW7S8SE7S6S5S5SW6S5S5S6S7S5S43Calm
2 days agoNW9NW9NW8NW9NW8NW9NW9NW8NW7NW8NW8NW7NW8NW7NW7N7NW10NW5CalmCalmNW6NW4NW4N4

Tide / Current Tables for Duwamish Waterway, Washington
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Duwamish Waterway
Click for Map
Fri -- 02:28 AM PDT     11.41 feet High Tide
Fri -- 03:53 AM PDT     Moonset
Fri -- 05:21 AM PDT     Sunrise
Fri -- 09:27 AM PDT     1.44 feet Low Tide
Fri -- 03:37 PM PDT     8.68 feet High Tide
Fri -- 04:44 PM PDT     Moonrise
Fri -- 08:51 PM PDT     Sunset
Fri -- 09:04 PM PDT     3.81 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
8.610.411.311.310.48.76.44.22.41.51.62.64.36.17.78.58.686.85.44.33.84.25.4

Tide / Current Tables for Seattle, Washington
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Seattle
Click for Map
Fri -- 02:27 AM PDT     11.76 feet High Tide
Fri -- 03:53 AM PDT     Moonset
Fri -- 05:21 AM PDT     Sunrise
Fri -- 09:16 AM PDT     1.52 feet Low Tide
Fri -- 03:36 PM PDT     8.95 feet High Tide
Fri -- 04:44 PM PDT     Moonrise
Fri -- 08:52 PM PDT     Sunset
Fri -- 08:53 PM PDT     4.01 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
9.110.811.711.610.68.86.44.12.31.61.82.94.66.588.88.98.26.95.54.444.55.8

Weather Map and Satellite Images
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wmap_P
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 (14,3,4,5)
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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.