Thursday, September19, 2019 L-36.com


Marine Weather and Tides
Friday Harbor, WA

Version 3.4
NOTICE
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 6:54AMSunset 7:19PM Thursday September 19, 2019 11:42 AM PDT (18:42 UTC) Moonrise 9:04PMMoonset 11:28AM Illumination 69% Phase: Waning Gibbous; Moon at 20 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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PZZ133 Northern Inland Waters Including The San Juan Islands- 848 Am Pdt Thu Sep 19 2019
Today..NW wind 5 to 15 kt becoming W in the afternoon. Wind waves 2 ft or less.
Tonight..SW wind 10 to 20 kt. Wind waves 1 to 3 ft. A slight chance of showers.
Fri..S wind to 10 kt. Wind waves 1 ft or less. A slight chance of showers.
Fri night..S wind 10 to 20 kt becoming 5 to 15 kt after midnight. Wind waves 1 to 3 ft.
Sat..S wind 5 to 15 kt. Wind waves 2 ft or less.
Sat night..SE wind 5 to 15 kt becoming 10 to 20 kt after midnight. Wind waves 1 to 3 ft.
Sun..S wind 15 to 25 kt becoming W 5 to 15 kt. Wind waves 2 to 4 ft subsiding to 2 ft or less.
Mon..SW wind to 10 kt becoming se. Wind waves 1 ft or less.
PZZ100 848 Am Pdt Thu Sep 19 2019
Synopsis for the northern and central washington coastal and inland waters..Onshore flow will prevail through Friday with high pressure offshore and lower pressure inland. Small craft advisory strength westerlies are possible in the strait tonight and again on Friday night. A frontal system will approach the area Saturday, then move inland Sunday, turning the winds southerly.


7 Day Forecast for Marine Location Near Friday Harbor town, WA
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location: 48.62, -123.15     debug


Area Discussion for - Seattle, WA
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Fxus66 ksew 191603
afdsew
area forecast discussion
national weather service seattle wa
903 am pdt Thu sep 19 2019

Synopsis A weak upper ridge will build inland today. A weak
system will slide down the back of the ridge tonight and Friday for
a slight chance of showers. Better chances for rain are expected
Saturday night and Sunday as frontal system arrives.

Short term today through Saturday Low level stratus and patchy
fog has formed across portions of the western wa lowlands this
morning with visibility down to a mile or less in spots. The fog
is shallow and we should see improving conditions late this
morning. Otherwise, expect a mix of clouds today but dry
conditions. 33
previous discussion... A weak upper ridge will be the primary
weather feature of the day as it builds over W wa... Keeping
conditions dry and partly to mostly sunny. Models remain
persistent in showing an extremely weak feature hot on its heels
though... Dipping down into the area tonight and into Friday... But
impressive is not one of the first thousand words to describe this
feature. The ECMWF plays things a little wetter with it... But
ultimately the best moisture remains just along the border of the
pqr sew cwas. Ultimately... Pops with this feature will remain
pretty low with the most widespread impact simply being increased
cloud cover. Another round of ridging builds in for Friday night
and into Saturday but both flattens and moves eastward rather
quickly with the ridge axis east of the cascades by Saturday
afternoon. Models remain in good agreement regarding next frontal
system expected to reach the coast Saturday night.

Afternoon high temperatures will remain fairly static throughout the
short term... Ranging in the mid to upper 60s for lowland
locations. Smr

Long term Sunday through Wednesday Previous discussion... The
aforementioned frontal system will bring widespread rain to the
cwa for the bulk of Sunday before it moves east of the cascades
Sunday evening and showers taper off Sunday night. An upper level
ridge does follow closely behind but like the ridges mentioned in
the short term... Does not hang around for any prolonged amount of
time... Making a hasty exit Monday evening. The system behind that
ridge is a point of contention for the models... With the gfs
fizzling the system out pretty quickly while the ECMWF also
weakens the system as it passes through but slowly enough so that
precip with the system would still be a very real possibility.

Opted to take an average of these two solutions... Leaning maybe a
bit more toward the drier gfs. The gulf in model solutions widens
for Wednesday as the GFS has a so-weak-as- to-nearly-be-zonal-flow
ridge over W wa while the ECMWF keeps a troughier pattern
overhead. Having leaned toward the GFS for Tuesday... Opted to
follow suit for Wednesday as well. Smr

Aviation Northerly flow aloft will persist today as an upper
level ridge over the offshore waters builds into the area and an
upper level trough continues to dig into the great basin. Low
level flow will remain weakly onshore. Some moisture in the low
levels has allowed for fog development across the area during the
overnight and early morning hours. Current observations indicate
a mixed bag of ceilings across the region, with areas eitherVFR
or ifr lifr in areas with fog. Expect areas of ifr lifr to dissipate
by late this morning and giving way toVFR conditions this afternoon.

High clouds will increase this afternoon ahead of a weather system
moving into british columbia.

Ksea... Satellite imagery has indicated fog has made it into the
terminal this morning, yielding ifr lifr ceilings at times.

Expect fog to dissipate by 18-19z, yieldingVFR conditions for
the afternoon hours and into the evening. Surface winds will
remain light and variable becoming s-sw 7 knots or less from mid
morning through the afternoon. 27 14

Marine Relatively light onshore flow will prevail through
Friday with high pressure offshore and lower pressure inland.

Onshore flow will be enough for low-end small craft advisory
westerlies in the central and east strait this evening. A frontal
system will then approach from the west on Saturday and then move
through the area Saturday night into Sunday. 27 14

Hydrology The daily hydrology discussion has ended until the
start of the next rainy season; it will only be updated as needed
until then.

Sew watches warnings advisories
Wa... None.

Pz... Small craft advisory from 5 pm this afternoon to 2 am pdt Friday
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
FRDW1 - 9449880 - Friday Harbor, WA 9 mi66 min Calm G 1.9 54°F 52°F1018.7 hPa
46088 - New Dungeness, WA (Hein Bank) 20 mi52 min NNE 1.9 G 1.9 54°F 52°F1 ft1018.5 hPa (+0.6)53°F
CHYW1 - 9449424 - Cherry Point, WA 27 mi60 min 1019.1 hPa
CPMW1 27 mi60 min S 5.1 G 6 53°F
CPNW1 27 mi96 min SSE 2.9 G 6 54°F
SISW1 - Smith Island, WA 27 mi52 min S 4.1 G 4.1 53°F 1018.8 hPa49°F
46118 31 mi47 min 54°F 1018 hPa54°F
PBFW1 - Padilla Bay Reserve, WA 38 mi132 min S 2.9 54°F 1019 hPa53°F
PTAW1 - 9444090 - Port Angeles, WA 38 mi66 min NNW 5.1 G 7 57°F 51°F1018.8 hPa
PTWW1 - 9444900 - Port Townsend, WA 41 mi60 min NNE 5.1 G 5.1 55°F 52°F1019.5 hPa

Wind History for Friday Harbor, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Friday Harbor Airport, WA10 mi1.8 hrsN 04.00 miFog/Mist55°F53°F93%1019 hPa
Eastsound, Orcas Island Airport, WA15 mi1.8 hrsN 010.00 miOvercast55°F55°F100%1018.6 hPa

Link to 5 minute data for KFHR

Wind History from FHR (wind in knots)
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Last 24hrN75
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N6N95NE5SW3W4W4W3CalmCalmCalmCalmCalmCalmNW3CalmCalmCalmCalmSE3CalmSE3
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SE7S73CalmCalmCalmCalmS4S4CalmCalmCalmCalmCalmCalmCalm34NE10
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Tide / Current Tables for Roche Harbor, San Juan Island, Washington
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Roche Harbor
Click for Map
Thu -- 02:40 AM PDT     0.76 feet Low Tide
Thu -- 06:54 AM PDT     Sunrise
Thu -- 09:36 AM PDT     5.92 feet High Tide
Thu -- 12:28 PM PDT     Moonset
Thu -- 02:42 PM PDT     4.18 feet Low Tide
Thu -- 07:16 PM PDT     Sunset
Thu -- 08:24 PM PDT     6.50 feet High Tide
Thu -- 10:04 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.81.60.90.81.32.23.34.45.35.85.95.65.14.64.34.24.54.95.56.16.56.45.94.9

Tide / Current Tables for Limestone Point, Spieden Channel, Washington Current
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Limestone Point
Click for MapFlood direction 85 true
Ebb direction 283 true

Thu -- 03:13 AM PDT     0.00 knots Slack
Thu -- 05:51 AM PDT     1.77 knots Max Flood
Thu -- 06:54 AM PDT     Sunrise
Thu -- 08:26 AM PDT     -0.00 knots Slack
Thu -- 12:27 PM PDT     Moonset
Thu -- 12:34 PM PDT     -1.90 knots Max Ebb
Thu -- 03:44 PM PDT     0.00 knots Slack
Thu -- 05:55 PM PDT     1.04 knots Max Flood
Thu -- 07:16 PM PDT     Sunset
Thu -- 07:28 PM PDT     -0.00 knots Slack
Thu -- 10:04 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-3.1-2.5-1.5-0.30.71.51.81.30.4-0.4-1.1-1.6-1.9-1.8-1.4-0.60.20.810.5-0.4-1.2-1.9-2.5

Weather Map
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wmap_P
GEOS 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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
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.