Saturday, May26, 2018 L-36.com


Marine Weather and Tides
Skykomish, 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 5:10AMSunset 8:45PM Friday May 25, 2018 9:27 PM PDT (04:27 UTC) Moonrise 3:40PMMoonset 2:48AM Illumination 86% 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- 817 Pm Pdt Fri May 25 2018
Tonight..NW wind 5 to 15 kt becoming S after midnight. Wind waves 2 ft or less.
Sat..SW wind to 10 kt. Wind waves 1 ft or less.
Sat night..N wind to 10 kt. Wind waves 1 ft or less.
Sun..Light wind becoming sw to 10 kt in the afternoon. Wind waves 1 ft or less.
Sun night..NW wind to 10 kt becoming variable after midnight. Wind waves 1 ft or less.
Mon..Light wind. Wind waves less than 1 ft.
Mon night..NW wind to 10 kt. Wind waves 1 ft or less.
Tue..Light wind becoming variable 5 to 15 kt. Wind waves 2 ft or less.
Wed..SW wind 5 to 15 kt becoming variable. Wind waves 2 ft or less.
PZZ100 817 Pm Pdt Fri May 25 2018
Synopsis for the northern and central washington coastal and inland waters..Moderate to occasionally strong onshore flow will continue through the memorial day weekend and into the middle of next week. 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 each day. The strongest onshore flow is expected this evening.

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 260345
afdotx
area forecast discussion
national weather service spokane wa
845 pm pdt Fri may 25 2018

Synopsis
Thunderstorms are expected to develop this afternoon evening, and
some may be capable of producing hail and heavy rain over the
southern idaho panhandle. A few showers may linger into Saturday
morning before drier weather arrives for the memorial day weekend.

Cooler weather is expected by the middle of next week.

Discussion
Tonight: a closed upper level low pressure system over california
will feed moisture up into primarily the southeastern portion of
the region. Best mid level moisture and instability will reside
from around the northeast blue mtns to the central panhandle mtns
and points southeastward. Afternoon convection across this area is
expected to continue into the evening hours. Surface based cape
values of up to around 1,000 j kg with 0-6 km shear of between
25-30 kts will be sufficient for isolated stronger thunderstorms
resulting in gusty outflow winds and small hail. The severe
thunderstorm threat doesn't look promising however as storms will
be moving into a less favorable storm environment. Synoptic level
forcing with shortwave energy rotating around the low will be
better south of our area. P-wats will be at around 1 inch meaning
that thunderstorms will contain very heavy rain. The good news is
that thunderstorms will be moving, albeit at a slow pace of
around 15 kts to the northeast. A flash flood watch is in effect
for portions of the northeast blue mtns, lewiston-clarkston areas
and the camas prairie through this evening. The primary threat
for flash flooding will be in steep terrain and in urban areas
such as in the lewiston-clarkston valley. The good news is that i
don't think any one thunderstorm will create a flash flooding
scenario since storms will be moving, but the threat will increase
substantially if multiple storms track over the same area.

Shortwave energy off of the northwest coast will also track across
the region tonight as an open wave. Models show a small chance for
shower developing along the frontal boundary. I decided to address
this potential by adding sprinkles to the forecast tonight. The
front will push across overnight with drier air filtering by
Saturday. This will reduce our potential for precip over the
weekend. Temperatures will be cooler on Saturday, especially over
the idaho panhandle, but warm back up on Sunday with highs back up
into the upper 70s to low 80s.

Winds will pick up through the cascade gaps this evening with
gusts of 20-30 mph expected across the wenatchee area tonight.

Winds will be a little breezy across the basin on Saturday behind
the cold front, but not expected to cause any impacts. Svh
Monday through Friday: we'll start the week hot and dry then cool
down with shower chances later in the week. It will be a great
memorial day to usher in the summer season for anyone with outdoor
plans. The upper low to our south stays over utah, far enough
away to keep any of that wrap around precipitation to our
southeast in central idaho. Under the high pressure ridge we'll
enjoy sunny skies and temperatures around 10 degrees above average
for late may, reaching in the 80s.

Tuesday begins our transition from our dry and warm ridge to a
cooler and more moist pattern. A cool trough of low pressure
begins to move inland on Tuesday bringing increased moisture and
cloud cover. We'll start sunny and clouds will increase from the
northwest through the afternoon evening, as well as some breezy
winds in the columbia basin in the afternoon. The cold front will
swing through around late Tuesday night early Wednesday through
there is still some uncertainty about exact timing. This cold
frontal passage will come with a line of showers likely early in
the day Wednesday. The latest run of the ec has actually come in
line with the GFS in showing this precip Wednesday morning, so
confidence it increasing that we'll see some showers, especially
for the northern mountains and panhandle mountains given the
upslope flow trajectory. Along with showers the front will bring
gusty post frontal winds to the basin and in the lee of the
cascades, generally gusting up to 20-30 mph. Under this cold pool
we'll see instability increasing as well and some Wednesday
afternoon thunderstorms are possible, mainly for the northern
mountains. Beyond Wednesday we'll generally stay under this cool
and more unsettled pattern through late week, with high
temperatures in the 60s on Wednesday increasing to the low 70s by
Friday. Bw

Aviation
00z tafs: evening thunderstorms are possible for kpuw and klws.

Some of these storms could be strong with heavy rain, hail and
strong winds. None of these have a high enough probability to put
into the taf. Elsewhere gusty evening winds are expected to
develop at keat and kmwh.

Preliminary point temps pops
Spokane 79 57 71 49 78 54 10 10 20 0 0 0
coeur d'alene 80 55 70 47 78 52 10 30 20 10 10 0
pullman 76 54 65 46 73 51 10 60 40 10 10 0
lewiston 82 61 71 52 80 56 10 70 50 10 10 10
colville 82 54 80 49 86 51 10 10 10 0 0 0
sandpoint 80 53 74 46 79 49 10 20 20 10 10 0
kellogg 78 54 67 46 76 50 20 60 40 10 10 10
moses lake 82 54 78 49 84 53 0 10 0 0 0 0
wenatchee 81 53 76 52 84 55 0 0 0 0 0 0
omak 82 54 79 51 85 53 10 10 0 0 0 0

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 mi40 min E 1.9 G 4.1 63°F 53°F1016.9 hPa
WPOW1 - West Point, WA 74 mi28 min N 13 G 13 56°F 1017 hPa (+0.4)48°F
TCNW1 - 9446484 - Tacoma, WA 80 mi46 min 63°F 51°F1017 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 mi32 minVar 610.00 miOvercast47°F43°F86%1016.5 hPa

Wind History from SMP (wind in knots)
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Last 24hrS5S4543S4SW5S5Calm--4536SW7SW76SW8SW766
G16
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1 day ago555SW53SW3S5S4----------------56S764S465
2 days agoS4S4S4S3S3S3S4CalmCalmCalmCalmS443355
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Tide / Current Tables for Marysville, Quilceda Creek, Washington
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Marysville
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Sat -- 03:14 AM PDT     10.94 feet High Tide
Sat -- 04:17 AM PDT     Moonset
Sat -- 05:17 AM PDT     Sunrise
Sat -- 10:27 AM PDT     0.30 feet Low Tide
Sat -- 04:48 PM PDT     9.14 feet High Tide
Sat -- 05:52 PM PDT     Moonrise
Sat -- 08:54 PM PDT     Sunset
Sat -- 10:21 PM PDT     4.15 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
6.58.510.110.910.79.77.95.63.31.40.40.51.73.767.88.99.18.67.66.14.94.24.4

Tide / Current Tables for Everett, Washington
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Everett
Click for Map
Sat -- 03:06 AM PDT     11.17 feet High Tide
Sat -- 04:17 AM PDT     Moonset
Sat -- 05:18 AM PDT     Sunrise
Sat -- 09:57 AM PDT     0.34 feet Low Tide
Sat -- 04:40 PM PDT     9.33 feet High Tide
Sat -- 05:52 PM PDT     Moonrise
Sat -- 08:54 PM PDT     Sunset
Sat -- 09:51 PM PDT     4.62 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
7.49.210.611.210.89.57.54.92.50.90.30.92.54.66.78.39.29.38.77.464.94.65.2

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 Spokane, WA (0,6,7,8)
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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.