Friday, March24, 2017 L-36.com


Marine Weather and Tides
Grapeview, WA

Version 3.4
What's New / NOTES
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.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 7:00AMSunset 7:31PM Friday March 24, 2017 4:51 PM PDT (23:51 UTC) Moonrise 4:27AMMoonset 2:46PM Illumination 7% Phase: Waning Crescent; Moon at 27 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- 240 Pm Pdt Fri Mar 24 2017
.small craft advisory in effect until midnight pdt tonight...
Tonight..SW wind 15 to 25 kt becoming S 10 to 20 kt after midnight. Wind waves 2 to 4 ft. Showers likely. A slight chance of tstms this evening.
Sat..SW wind 10 to 20 kt becoming 5 to 15 kt in the afternoon. Wind waves 1 to 3 ft. A chance of showers.
Sat night..Variable wind to 10 kt becoming se after midnight. Wind waves 1 ft or less. A slight chance of showers in the evening.
Sun..SE wind to 10 kt becoming S in the afternoon. Wind waves 1 ft or less.
Sun night..SE wind to 10 kt becoming sw 10 to 20 kt after midnight. Wind waves 1 ft or less building to 1 to 3 ft.
Mon..S wind 5 to 15 kt becoming sw to 10 kt in the afternoon. Wind waves 2 ft or less.
Mon night..SW wind 5 to 15 kt. Wind waves 2 ft or less.
Tue and Wed..S wind 10 to 20 kt. Wind waves 1 to 3 ft.
PZZ100 240 Pm Pdt Fri Mar 24 2017
Synopsis for the northern and central washington coastal and inland waters..Weak higher pres to build over the coastal waters through Saturday with onshore flow easing. The next pacific frontal system is forecast to move onshore late Sunday. A following frontal system is expected to arrive by Tuesday. Another stronger system expected Wednesday.

7 Day Forecast for Marine Location Near Grapeview, WA
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location: 47.3, -122.85     debug


Area Discussion for - Seattle, WA
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Fxus66 ksew 241537
afdsew
area forecast discussion
national weather service seattle wa
840 am pdt Fri mar 24 2017

Synopsis An upper trough will bring showers and a slight chance
of thunderstorms today and this evening. Showers will decrease
Saturday as the trough shifts inland. The pattern will remain fairly
wet into the middle of next week as a series of weather systems move
through the area.

Short term Radar and satellite imagery indicate a front has moved
east of puget sound, leaving a more showery pattern behind. Visible
satellite picture indicates there should be at least some clearing
today, though a cumulus field is likely to fill in the clear areas
and there will be showers as an upper trough remains over the
region. The air mass will be unstable enough for a slight chance of
thunderstorms this afternoon and early evening. Snow has tapered on
the volcanoes and the winter weather advisory in the cascades will
be allowed to expire at 11 am. Snow will continue at times in
showers. Highs today will be mainly in the lower to mid 50s.

Showers will taper tonight and become somewhat confined to the
mountains and coast with the loss of daytime heating. The upper
trough over the area will maintain a chance of showers into Saturday
but the coverage will be less than today. Showers will taper
significantly Saturday night as high pressure aloft briefly moves
over the area. Sunday morning is likely to be dry as well over most
of the region.

Another frontal system will bring an increasing chance of rain
Sunday. This system is somewhat split and not too impressive but all
areas should see some rain. Rain will move onto the coast in the
morning. The interior will likely be dry until afternoon when rain
will arrive. Burke/schneider

Long term Previous discussion... An upper trough will shift east
of the area Monday for decreasing showers but there won't really be
any break in the wet weather as warm front rain from the next
frontal system will already be moving into the area in the
afternoon. The warm front should result in a drippy Monday night. A
trailing cold front will keep rain chances high on Tuesday and
Wednesday. Drier weather is expected on Thursday as an upper ridge
builds over the northeast pacific. Schneider

Aviation An upper trough off the coast is expected to
weaken and move onshore Saturday. SW flow aloft over washington
becoming westerly Saturday. Air mass moist and weakly unstable.

Areas of showers east of the offshore upper trough today into this
evening. MainlyVFR ceilings though dipping to MVFR in some showers.

Sunbreaks between the showers at times as well. The air mass is
unstable enough that any warmer sunshine may help develop an
isolated thunderstorm from about 20z-02z. Afternoon convective
temperatures will run from about 47 to 51 deg. Decreasing showers
after sundown this evening but continuing and more widely scattered
into Saturday morning.

Ksea... PrimarilyVFR ceilings today dipping to the upper end of MVFR
in passing showers. The risk of any afternoon thunderstorms is no
more than 20 percent. SE winds this morning should become S to SW by
18z and pick up this afternoon to 10 to 20 kt before easing after
02z. Buehner

Marine A 992 mb low 350 nm west of CAPE flattery will continue
tracking north into the central british columbia coast today. Weak
higher pres to build over the coastal waters through tonight and
Saturday. Onshore flow into western washington today to weaken
tonight.

The next pacific frontal system is forecast to move onshore late
Sunday. A following frontal system is expected to arrive by Tuesday.

Both of these systems look relatively weak and gale force winds
appear unlikely. Buehner

Hydrology River flooding is unlikely over the next 7 days.

Sew watches/warnings/advisories
Wa... Winter weather advisory until 11 am pdt this morning for
cascades of pierce and lewis counties-cascades of whatcom
and skagit counties.

Pz... Small craft advisory until 6 am pdt Saturday 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 for hazardous seas from 6 am to 3 pm pdt
Saturday 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 for rough bar until 6 am pdt Saturday for
grays harbor bar.

Small craft advisory until midnight pdt tonight for admiralty
inlet-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-east entrance u.S. Waters strait of
juan de fuca-northern inland waters including the san juan
islands-puget sound and hood canal-west entrance u.S.

Waters strait of juan de fuca.

Small craft advisory for hazardous seas from midnight tonight to
3 pm pdt Saturday 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.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46121 7 mi44 min 12 49°F 1010.2 hPa45°F
TCNW1 - 9446484 - Tacoma, WA 23 mi51 min 54°F 47°F1010.8 hPa (+0.7)
TCMW1 - 9446482 - Tacoma Met, WA 23 mi51 min S 8.9 G 17
WPOW1 - West Point, WA 33 mi51 min S 17 G 18 50°F 1009.8 hPa (+0.3)45°F
EBSW1 - 9447130 - Seattle, WA 34 mi51 min S 5.1 G 8.9 53°F 47°F1010.6 hPa (+0.7)

Wind History for Tacoma MET, WA
(wind in knots)    EDIT      (on/off)   Help
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NW7
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G25

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Bremerton, Bremerton National Airport, WA13 mi56 minS 11 G 177.00 miMostly Cloudy48°F44°F87%1011.2 hPa
Tacoma, Tacoma Narrows Airport, WA14 mi58 minSSW 14 G 217.00 miRain50°F43°F77%1011.2 hPa
Shelton, Shelton Sanderson Field, WA17 mi58 minSW 15 G 236.00 miLight Rain50°F45°F83%1010.2 hPa
Fort Lewis / Gray U. S. Army Airfield, WA20 mi1.9 hrsSSE 1410.00 miMostly Cloudy53°F47°F82%1010.6 hPa
Olympia, Olympia Airport, WA22 mi57 minSSW 12 G 1710.00 miLight Rain50°F46°F89%1011.1 hPa
Tacoma / McChord Air Force Base, WA22 mi1.9 hrsSSW 15 G 2310.00 miMostly Cloudy53°F44°F73%1010.9 hPa

Wind History from PWT (wind in knots)
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Last 24hrSW7W4SW4SW4W3CalmW4NW5CalmCalmCalmCalmCalmCalmCalmS3S6S8S11
G16
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G24
1 day agoS19
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SW22
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S10S9S9S9S7S8S6S7S7S5S4S4S5S9S11SW6S8SE6S9S7
2 days agoS8
G15
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G21
S4CalmSE3CalmCalmCalmCalmSW3SW3S6S11
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Tide / Current Tables for McMicken Island, Case Inlet, Puget Sound, Washington
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McMicken Island
Click for Map
Fri -- 04:38 AM PDT     13.37 feet High Tide
Fri -- 05:26 AM PDT     Moonrise
Fri -- 07:05 AM PDT     Sunrise
Fri -- 10:36 AM PDT     5.94 feet Low Tide
Fri -- 03:25 PM PDT     11.25 feet High Tide
Fri -- 03:46 PM PDT     Moonset
Fri -- 07:30 PM PDT     Sunset
Fri -- 10:21 PM PDT     1.13 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.67.31012.113.213.312.510.98.97.16.166.98.510.111.111.110.28.76.64.22.31.21.4

Tide / Current Tables for Pickering Passage, North, Washington Current
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Pickering Passage
Click for Map
Fri -- 01:42 AM PDT     0.64 knots Max Flood
Fri -- 05:27 AM PDT     Moonrise
Fri -- 05:46 AM PDT     -0.00 knots Slack
Fri -- 07:05 AM PDT     Sunrise
Fri -- 09:29 AM PDT     -0.37 knots Max Ebb
Fri -- 11:59 AM PDT     0.00 knots Slack
Fri -- 01:52 PM PDT     0.37 knots Max Flood
Fri -- 03:46 PM PDT     Moonset
Fri -- 04:45 PM PDT     -0.00 knots Slack
Fri -- 07:30 PM PDT     Sunset
Fri -- 08:42 PM PDT     -0.54 knots Max Ebb
Fri -- 11:58 PM PDT     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.30.60.60.50.40.2-0-0.2-0.3-0.4-0.4-0.200.30.40.30.1-0-0.2-0.4-0.5-0.5-0.5-0.3

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 (19,4,5,8)
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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.