Monday, May29, 2017 L-36.com


Marine Weather and Tides
Skykomish, 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 5:07AMSunset 8:50PM Monday May 29, 2017 8:34 PM PDT (03:34 UTC) Moonrise 8:31AMMoonset 11:39PM Illumination 21% Phase: Waxing Crescent; Moon at 5 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- 300 Pm Pdt Mon May 29 2017
Tonight..NW wind 10 to 20 kt becoming se to 10 kt after midnight. Wind waves 2 ft or less. A slight chance of showers after midnight.
Tue..Light wind becoming S 5 to 15 kt in the afternoon. Wind waves less than 1 ft becoming 2 ft or less in the afternoon. A chance of showers in the morning then a chance of tstms in the afternoon.
Tue night..Variable wind 5 to 15 kt becoming S after midnight. Wind waves 2 ft or less. A chance of tstms and showers in the evening then a chance of showers after midnight.
Wed..S wind to 10 kt becoming variable in the afternoon. Wind waves 1 ft or less.
Wed night..Variable wind 5 to 15 kt becoming S after midnight. Wind waves 2 ft or less.
Thu..SW wind 5 to 15 kt. Wind waves 2 ft or less.
Thu night..Variable wind 5 to 15 kt becoming sw after midnight. Wind waves 2 ft or less.
Fri..S wind to 10 kt becoming n. Wind waves 1 ft or less.
Sat..N wind to 10 kt becoming ne. Wind waves 1 ft or less.
PZZ100 300 Pm Pdt Mon May 29 2017
Synopsis for the northern and central washington coastal and inland waters..A surface ridge over the offshore waters this afternoon combined with a surface trough over eastern wa will maintain moderate to strong onshore flow through Tuesday night. The ridge will shift over the wa coast Tuesday evening as a weakening cold front approaches the region. The weak surface ridge will shift over the western wa interior Wednesday while the approaching front eventually dissipates over the coastal waters Wednesday night and Thursday.

7 Day Forecast for Marine Location Near Skykomish, WA
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location: 47.78, -121.05     debug


Area Discussion for - Spokane, WA
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Fxus66 kotx 292349
afdotx
area forecast discussion
national weather service spokane wa
449 pm pdt Mon may 29 2017

Synopsis
High pressure continues over the inland northwest through Tuesday
with another very warm day. There is a small chance of
thunderstorms in the higher elevations, otherwise expect dry
weather. This warm spell will contribute to rises on rivers from
the cascades into north idaho. A strong cold front will arrive
Tuesday night with strong gusty winds and a good chance of
showers and thunderstorms. By Wednesday and for the rest of the
week, expect seasonal temperatures, breezy winds and a chance of
showers and thunderstorms in the higher terrain.

Discussion
Tonight through Tuesday... Upper level ridge will hold onto the
region one more day. This will bring more of the same... Ie warm
and sunny weather to most locations. In fact it should be the
hottest day in the recent stint of weather as 850 mb temps warm
1-2 more degrees over today. That should equate to highs in the
mid 80s and 90s or a couple even a couple degrees warmer than
today. While our confidence is high for that trend over the
eastern half of the forecast area, the warming is less certain
near the cascades. That is because the ridge will begin its
breakdown which should advect some high level moisture and clouds
over this portion of the forecast area ahead of a strong cold
front. The reduced insolation could result in cooler temperatures
despite the warming at 850 mbs. Speaking of clouds and the cold
front, this could be an interesting situation. Confidence is high
this front will drop temperatures significantly and initially
bring gusty winds. Most model guidance brings the front into the
cascades during the early evening and across the remainder of the
forecast area overnight. The timing is right to support some winds
of 20-30 mph during the evening across the lower columbia basin,
waterville plateau, and wenatchee area, with lesser amounts
overnight across the remainder of the area. Whats less certain is
what to do with precipitation chances.

While much of the precipitation threat will be tied to the arrival
of the front, in the cascades during the late afternoon, there is
more curiosity for the threat of convection developing ahead of
the upper level trough over SE washington and nc oregon. Most of
the convective allowing models are showing a pretty nice cluster
of thunderstorms developing ahead of the trough in nc oregon by
mid-afternoon and then pushing it across SE washington into nc
idaho late in the afternoon or early evening. These thunderstorms
(if they form) will benefit from a very unstable air mass which
will develop above the low-level thermal ridge. SBCAPE values
could climb into the 1000-1500 j kg range while 0-6km shear values
reach 30-35 kts. This could be enough to generate some strong
thunderstorms which would be capable of producing large hail.

Whether or not these can move into SE wa or nc id during the
evening before weakening is questionable, but if they do they bear
watching. Otherwise again most of the shower and thunderstorm risk
will be tied to the incoming trough and cold front. These should
mainly impact the cascades, okanogan highlands, and okanogan
valley during the evening and then shift into extreme eastern
washington and north idaho overnight. The thunderstorm threat will
gradually taper off during the night. Fx
Wednesday through Monday: expect a pattern change with bring more
seasonal temperatures, breezy winds in the columbia basin and
occasional mountain showers. After the strong cold front push
through the region Tuesday night, an upper level trough will set
up off the washington coast with a moist southwest flow into the
region accompanied by embedded disturbances. On Wednesday, the
remains of the front linger over the southern panhandle with a
resurgence of convection in the afternoon and early evening.

Breezy winds will develop with higher gusts in the afternoon while
temperatures feel the effects of the cold air advection and cool
about 20 degrees. The boundary remains stalled Wednesday night
into Thursday with the best chance of precipitation from the blue
mountains into the central idaho panhandle. The arrival of a
shortwave of Thursday will help enhance convection in most areas
with a chance of thunderstorms possible across northeast
washington into north idaho, and kick the boundary east. Another
disturbance arrives on Friday with a repeat of mainly afternoon
and evening convection in the higher terrain. There is a good a
chance for dry weather on Saturday as a shortwave ridge builds
over the region. This will be short lived as another pacific
trough digs down the west coast and increases a moist and unstable
southwest flow by Sunday afternoon into Monday. There are some
model discrepancies on the track of this trough so will lean
toward climo pops for Sunday night into Monday. Yet, there may be
signs of warming and drying by middle of next week. Rfox.

Aviation
00z tafs: isolated thunderstorms will be possible over the higher
terrain above republic to metalline falls in northeast wa and in
the central to northern idaho panhandle late this afternoon.

Expect the possibility for convection to wane quickly though after
02z with clear skies andVFR conditions tonight into Tuesday.

Higher clouds will filter in over the region ahead of a cold front
on Tuesday, especially closer to the cascade mtns. Chances for
thunderstorms will also increase in the afternoon Tuesday, but
best chances will be after 00z Wednesday. Svh

Preliminary point temps pops
Spokane 60 89 58 74 53 72 0 0 20 20 20 10
coeur d'alene 54 87 55 73 51 72 0 0 20 30 20 20
pullman 52 87 55 72 52 70 0 0 20 20 50 20
lewiston 58 94 61 78 56 76 0 0 30 20 50 40
colville 50 90 58 76 52 73 0 10 40 30 20 50
sandpoint 49 85 54 75 49 69 10 10 20 30 40 30
kellogg 49 86 53 76 47 68 10 0 10 30 70 50
moses lake 56 94 60 80 55 78 0 0 40 10 0 10
wenatchee 62 90 58 79 58 75 0 10 30 10 0 20
omak 52 91 60 79 53 76 0 0 30 20 10 20

Otx watches warnings advisories
Id... None.

Wa... None.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
EBSW1 - 9447130 - Seattle, WA 69 mi46 min WNW 1.9 G 5.1 64°F 51°F1012.8 hPa
WPOW1 - West Point, WA 74 mi34 min NE 7 G 8 59°F 1013 hPa (-0.4)52°F
TCNW1 - 9446484 - Tacoma, WA 80 mi52 min 67°F 51°F1013.3 hPa

Wind History for Seattle, Puget Sound, WA, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Stampede Pass, WA37 mi38 minWSW 310.00 miFair67°F53°F61%1013.9 hPa

Wind History from SMP (wind in knots)
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Last 24hr3SW4SW3CalmCalmCalmCalmCalmCalmE3NE3NE3333534E54CalmCalm3SW3
1 day agoCalmSW3CalmCalmCalmCalmCalmCalmCalmE33343453CalmCalm3E3NW7NW63
2 days ago34SW4SW3SW3SW3W3SW3SW3CalmCalmCalmCalmCalmCalmCalm343CalmCalmN4NW53

Tide / Current Tables for Marysville, Quilceda Creek, Washington
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Marysville
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Mon -- 03:01 AM PDT     5.51 feet Low Tide
Mon -- 05:15 AM PDT     Sunrise
Mon -- 07:36 AM PDT     9.80 feet High Tide
Mon -- 09:35 AM PDT     Moonrise
Mon -- 02:49 PM PDT     -2.22 feet Low Tide
Mon -- 08:57 PM PDT     Sunset
Mon -- 09:55 PM PDT     11.66 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
8.87.265.567.28.69.69.78.97.352.4-0-1.7-2.2-1.11.34.37.39.811.211.711.2

Tide / Current Tables for Everett, Washington
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Everett
Click for Map
Mon -- 02:31 AM PDT     6.13 feet Low Tide
Mon -- 05:15 AM PDT     Sunrise
Mon -- 07:28 AM PDT     10.01 feet High Tide
Mon -- 09:36 AM PDT     Moonrise
Mon -- 02:19 PM PDT     -2.47 feet Low Tide
Mon -- 08:57 PM PDT     Sunset
Mon -- 09:47 PM PDT     11.91 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
8.77.26.26.26.989.29.99.98.86.84.21.3-1.1-2.4-2.1-0.42.35.38.210.411.611.911.3

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 Spokane, WA (23,6,7,8)
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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.