Sunday, June25, 2017 L-36.com


Marine Weather and Tides
Des Moines, WA

Version 3.4
What's New / NOTES
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 5:12AMSunset 9:12PM Sunday June 25, 2017 1:54 AM PDT (08:54 UTC) Moonrise 6:15AMMoonset 9:36PM Illumination 2% 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- 900 Pm Pdt Sat Jun 24 2017
Tonight..N wind to 10 kt. Wind waves 1 ft or less.
Sun..N wind 5 to 15 kt. Wind waves 2 ft or less.
Sun night..N wind 5 to 15 kt becoming sw after midnight. Wind waves 2 ft or less.
Mon..S wind to 10 kt becoming sw 5 to 15 kt in the afternoon. Wind waves 2 ft or less.
Mon night..SW wind 10 to 20 kt becoming S 5 to 15 kt after midnight. Wind waves 1 to 3 ft.
Tue..S wind to 10 kt becoming ne 5 to 15 kt in the afternoon. Wind waves 2 ft or less.
Tue night..N wind to 10 kt in the evening becoming light. Wind waves 1 ft or less.
Wed..S wind to 10 kt becoming variable. Wind waves 1 ft or less.
Thu..S wind to 10 kt becoming n. Wind waves 1 ft or less.
PZZ100 900 Pm Pdt Sat Jun 24 2017
Synopsis for the northern and central washington coastal and inland waters..A thermally induced trough of low pres just off the coast will shift E of the cascades late Sunday afternoon, causing the flow to become onshore or westerly. The flow will strengthen Sunday night and then peak on Monday evening. Gales are possible in the strait of juan de fuca on Sunday night but are more likely on Monday night.

7 Day Forecast for Marine Location Near Des Moines, WA
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location: 47.39, -122.35     debug


Area Discussion for - Seattle, WA
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Fxus66 ksew 250428
afdsew
area forecast discussion
national weather service seattle wa
928 pm pdt Sat jun 24 2017

Synopsis High pressure aloft will bring one more very warm day
to western washington on Sunday. Much cooler temperatures with
some night and morning clouds will prevail Monday through
Wednesday with an upper trough over the area and and low level
onshore. An upper ridge will move over the area later in the week
for some modest warming.

Short term An upper ridge currently over the area will shift
inland tonight and Sunday. A thermal trough over the coast will
also shift inland later Sunday. Sunday should be a few degrees
warmer than today for the interior with record highs likely. A
heat advisory remains in effect. The coast will cool 5-10 degrees
as onshore flow develops in the afternoon.

An onshore push will occur Sunday night with low clouds developing
at the coast in the evening and spreading at least partially
inland early Monday morning. There might even be a few showers
over the southern cascades Monday morning as a short wave clips
the area but most of this is expected to be east of the crest.

Highs will be much cooler on Monday with most areas cooling 15 to
20 degrees. Low clouds should burn back to the coast during the
day.

Moderate to strong onshore flow will continue Monday night and
Tuesday. Low clouds should once again spread inland overnight with
more extensive coverage Tuesday morning and a slower burnoff later
in the day. Highs should cool a few more degrees back to near
normal. Schneider

Long term Previous discussion... Progs agree on some ridging
aloft with rising heights Wednesday and Thursday. This change
should translate into some thinning of the marine layer resulting
in a late night morning clouds, afternoon sunshine regime. For
Friday and Saturday, the progs differ on retaining the building
height trend vs some weak troughing off the coast. Bottom line
here is likely maintaining low level onshore flow and the marine
layer, with afternoon sunshine particularly in the interior and a
bit warmer than average temperatures. Buehner

Aviation A strong upper ridge axis is squarely over western
washington this evening. It will move to the northern rockies over
the next 24 hours. Light northwest flow aloft will become
southwest on Sunday. Weak low-level offshore flow and a dry air
mass will continue through Sunday morning. Low-level onshore flow
will develop later Sunday, and the low-level air mass will start
to moisten on Sunday night. Clear skies through the day on Sunday,
then marine stratus should make its first appearance near grays
harbor as early as Sunday evening.

Ksea... Clear skies and light north wind will persist through
Sunday evening. haner

Marine A somewhat diffuse thermal pressure trough will linger
near the coast until after sunrise on Sunday, leading to weak
low-level offshore flow. The trough will move east of the cascades
on Sunday afternoon, opening the door to increasing onshore
gradients and wind. Uil-bli gradient should peak on Monday night,
by which time westerly gales appear likely in the central and
eastern strait. Cannot rule out gales on Sunday night, thus the
gale watch, but the nam's forecast uil-bli gradient of +2 to +2.7
mb on Sunday night is not convincing at that time. Haner

Sew watches warnings advisories
Wa... Heat advisory until 9 pm pdt Sunday for bellevue and vicinity-
bremerton and vicinity-east puget sound lowlands-hood canal
area-seattle and vicinity-southwest interior-tacoma area.

Pz... Small craft advisory until 10 pm pdt this evening for 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
out 10 nm.

Gale watch from Sunday evening through late Sunday night for
central u.S. Waters strait of juan de fuca-east entrance
u.S. Waters strait of juan de fuca.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
TCNW1 - 9446484 - Tacoma, WA 9 mi55 min 70°F 51°F1014.3 hPa (-0.8)
TCMW1 - 9446482 - Tacoma Met, WA 9 mi55 min W 9.9 G 12
EBSW1 - 9447130 - Seattle, WA 15 mi55 min S 1.9 G 1.9 66°F 53°F1014.6 hPa (-0.7)
WPOW1 - West Point, WA 19 mi55 min NNE 8 G 8 63°F 1014.7 hPa (-0.8)52°F
46121 21 mi47 min 3.9 64°F 1013.3 hPa58°F

Wind History for Tacoma MET, WA
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NE2
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Seattle, Seattle-Tacoma International Airport, WA4 mi62 minNNE 1210.00 miFair73°F51°F46%1015 hPa
Boeing Field - King County International Airport, WA10 mi62 minVar 310.00 miFair74°F53°F48%1014.4 hPa
Renton Municipal Airport, WA10 mi62 minWNW 910.00 miFair74°F55°F54%1014.5 hPa
Tacoma, Tacoma Narrows Airport, WA15 mi62 minVar 310.00 miFair70°F48°F46%1013.7 hPa
Tacoma / McChord Air Force Base, WA17 mi57 minN 010.00 miFair64°F56°F79%1014.7 hPa
Pierce County-Thun Field, WA20 mi60 minN 010.00 miFair63°F59°F88%1014.9 hPa
Bremerton, Bremerton National Airport, WA23 mi59 minNE 710.00 miFair71°F46°F42%1015.7 hPa
Fort Lewis / Gray U. S. Army Airfield, WA24 mi1.9 hrsN 010.00 miFair72°F57°F60%1014.7 hPa

Wind History from SEA (wind in knots)
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Last 24hrN5NE5N9E3NE5NE3N7N10N8N9N9NW7N11N9NW11N11N9N9N7N9N9N12N13N12
1 day agoN8NE6NE6NE5N5N6N8N9N6N7N9N9
G16
NW10NW10N11N12N11N12N9N6N8N10N9N9
2 days agoNE6NE4CalmN6N5N6N7N8NE8NE7N11NE11
G17
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N9NW9NW9NW9N14N9N10N10N6NE8NE8

Tide / Current Tables for Des Moines, Washington
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Des Moines
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Sun -- 12:27 AM PDT     6.44 feet Low Tide
Sun -- 05:13 AM PDT     Sunrise
Sun -- 05:23 AM PDT     11.65 feet High Tide
Sun -- 07:15 AM PDT     Moonrise
Sun -- 12:37 PM PDT     -3.41 feet Low Tide
Sun -- 07:56 PM PDT     13.06 feet High Tide
Sun -- 09:10 PM PDT     Sunset
Sun -- 10:35 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
6.66.67.69.110.611.611.410.17.94.91.6-1.3-3.1-3.3-1.80.94.47.910.812.513.112.5119

Tide / Current Tables for Skagit Bay, 1 mile S of Goat Island, Washington Current
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Skagit Bay
Click for Map
Sun -- 12:13 AM PDT     1.58 knots Max Flood
Sun -- 03:22 AM PDT     -0.00 knots Slack
Sun -- 05:14 AM PDT     Sunrise
Sun -- 06:44 AM PDT     -1.60 knots Max Ebb
Sun -- 07:16 AM PDT     Moonrise
Sun -- 09:42 AM PDT     0.00 knots Slack
Sun -- 12:46 PM PDT     2.20 knots Max Flood
Sun -- 04:55 PM PDT     -0.00 knots Slack
Sun -- 07:36 PM PDT     -1.49 knots Max Ebb
Sun -- 09:10 PM PDT     Sunset
Sun -- 10:35 PM PDT     Moonset
Sun -- 10:54 PM PDT     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.61.51.20.6-0.8-1.3-1.5-1.6-1.4-10.71.62.12.221.71.2-0.4-1.2-1.4-1.5-1.3-10.3

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 (4,6,7,8)
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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.