Wednesday, April26, 2017 L-36.com


Marine Weather and Tides
Geneva, 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 5:54AMSunset 8:20PM Wednesday April 26, 2017 5:02 AM PDT (12:02 UTC) Moonrise 5:33AMMoonset 7:44PM Illumination 0% Phase: New Moon; Moon at 0 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- 300 Am Pdt Wed Apr 26 2017
.small craft advisory in effect through this evening...
Today..SW wind 15 to 25 kt. Wind waves 2 to 4 ft. Highest wind and waves south part. Scattered showers.
Tonight..W wind 15 to 25 kt easing to 10 to 20 kt after midnight. Wind waves 1 to 4 ft. Highest wind and waves S part. A chance of showers.
Thu..W wind 10 to 20 kt becoming 5 to 15 kt in the afternoon. Wind waves 1 to 3 ft. A chance of showers.
Thu night..W wind 15 to 25 kt. Wind waves 2 to 4 ft.
Fri..W wind 10 to 20 kt easing to 10 kt in the afternoon. Wind waves 1 to 3 ft subsiding to 1 ft or less in the afternoon.
Fri night..SW wind 10 to 20 kt becoming S 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.
Sun..SW wind 15 to 25 kt. Wind waves 2 to 4 ft.
PZZ100 300 Am Pdt Wed Apr 26 2017
Synopsis for the northern and central washington coastal and inland waters..Strong post frontal onshore flow today will gradually ease tonight and Thursday. Another front will reach the area over the weekend. Onshore flow gradually weakens early next week.

7 Day Forecast for Marine Location Near Geneva, WA
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location: 48.76, -122.41     debug


Area Discussion for - Seattle, WA
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Fxus66 ksew 261020
afdsew
area forecast discussion
national weather service seattle wa
320 am pdt Wed apr 26 2017

Synopsis Moist unsettled flow from the pacific into western
washington will maintain showery weather with some sunbreaks at
times through Thursday. A developing puget sound convergence zone
will enhance showers later today in the central sound area. Higher
pressure is expected to build Friday for a respite from the wet
weather that may hang on into Saturday. Another weather system is
forecast to arrive by Sunday for more rain before higher pressure
rebuilds early next week for drier weather heading into may.

Short term The old saying - april showers bring may flowers -
we certainly have had plenty of april showers with more in store the
next few days. A flat upper level ridge resides southwest of the
pacific NW this morning with a 140 knot plus jet extending from near
the dateline into the region. There are a sequence of shortwaves
embedded in the jet that will maintain moist unsettled weather into
Thursday.

Tuesday's weakening front moved onshore overnight with spotty rain.

The next shortwave approaching 130w appearing well on water vapor
satellite imagery at this early hour will move onshore and enhance
showers later today, particularly in southern sections of the area.

At the surface, a ridge of higher pressure off the coast will
increase onshore flow as well. This pattern will help create a puget
sound convergence zone later today that has the potential to sag
south from northern kitsap and snohomish counties south well into
king county this evening thanks to the strong flow to develop in the
strait of juan de fuca.

Another embedded shortwave is forecast to swing onshore Thursday to
keep the showers going, but mainly in the mountains and higher
terrain. High temperatures look to remain a bit below late april
averages.

Guidance strongly suggests that Friday may offer a break in the
precipitation with some sunshine as a ridge of higher pressure
builds off the coast. Have those sunglasses handy. Buehner

Long term The next question is will the drier weather hang on
into Saturday. The canadian and ECMWF concur with the ridge holding
for another dry day while the GFS is quicker in spreading
precipitation onshore during the day. At this point, have indicated
a growing threat of rain for the olympic peninsula and coast during
the day Saturday and increasing clouds elsewhere. Then this weather
system should provide more rain Saturday night with decreasing
showers on Sunday.

As the month of may begins, guidance again is not consistent. The
ecmwf rebuilds the upper ridge while the canadian and GFS swing yet
another shortwave onshore for additional showers. But beyond Monday,
restless natives eager for some sunshine may get some as it appears
higher pressure aloft will build over the region. Buehner

Aviation Moderate westerly flow aloft becoming light
northwesterly flow aloft tonight as a trough shift eastward. Strong
onshore flow today with a moist and weakly unstable air mass air
mass over western washington through this evening. Showers will
decrease later tonight. The puget sound convergence zone could
become active this afternoon and evening in the prone corridor from
sea-pae. A wind shift to the north-northwest will occur over north
puget sound this afternoon and could cause southwest winds at
kbfi/ksea to turn westerly or switch to north-northwest for a few
hours late in afternoon and early evening. Opposing flow w/ wind
speeds to 10 kt at ksea/kbli possible roughly 00z-05z early this
evening. Mostly MVFR CIGS and isolated ifr CIGS this morning
becoming predominatelyVFR this afternoon except lower with showers
or near the convergence zone.

Ksea... The air mass is saturated near the surface with periods of
ifr possible until around daybreak. Otherwise predominately MVFR
cigs this morning improving to mostlyVFR this afternoon. Breezy
southwest winds 10-16 kt W /gusts 25-28 kt. The puget sound
convergence zone will develop during the afternoon and could reach
the terminal by around 00z late this afternoon. Winds could shift
more westerly and then north-northwesterly at times through 06z
before switching back to a southerly direction and decreasing. A
period of opposing flow at ksea/kbfi could occur late this afternoon
or evening w/ wind speed up to 10-12 kt out of the south and lighter
from the north direction. Dtm

Marine Onshore flow will increase today behind a front as an
upper level system crosses the area. Winds should gradually east
later tonight. Small craft winds expected most waters for post
frontal onshore west-southwesterly winds. A stronger westerly push
is anticipated in the central/east strait, thus a gale warning is up
from midday through most of tonight. Small craft winds may continue
over other waters near the east entrance to the strait. Dtm

Sew watches/warnings/advisories
Wa... None.

Pz... Small craft advisory all waters.

Gale warning central and eastern strait late this morning
through late tonight.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CHYW1 - 9449424 - Cherry Point, WA 20 mi50 min SSE 6 G 8.9 1006.7 hPa
CPMW1 20 mi50 min SSE 12 G 14 49°F
PBFW1 - Padilla Bay Reserve, WA 21 mi92 min S 4.1 49°F 1008 hPa48°F
FRDW1 - 9449880 - Friday Harbor, WA 35 mi86 min S 4.1 G 6 48°F 48°F1007.1 hPa
SISW1 - Smith Island, WA 38 mi62 min SSE 7 G 8 48°F 1007.4 hPa (+0.7)
PTWW1 - 9444900 - Port Townsend, WA 49 mi50 min Calm G 0 49°F 49°F1008.4 hPa

Wind History for Cherry Point South Dock, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Bellingham, Bellingham International Airport, WA7 mi69 minSSE 11 G 1710.00 miOvercast50°F48°F93%1007.4 hPa
Burlington/Mount Vernon, Skagit Regional Airport, WA20 mi67 minS 510.00 miOvercast50°F48°F94%1007.8 hPa

Wind History from BLI (wind in knots)
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SE8E5CalmSE7E4CalmCalmS7S11
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1 day agoNE3NE4NE3N3CalmSE4N4NW6--6NW10W8W86W4CalmS4S5S4S7S9S9S12
G17
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2 days agoS9S11SE13S8S8S9S6S6S7SE10S10SE11
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SE11SE8SE8SE6SE6SE5E3NE3NE4

Tide / Current Tables for Bellingham, Washington
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Bellingham
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Wed -- 04:56 AM PDT     8.08 feet High Tide
Wed -- 05:18 AM PDT     New Moon
Wed -- 05:57 AM PDT     Sunrise
Wed -- 06:33 AM PDT     Moonrise
Wed -- 11:44 AM PDT     0.09 feet Low Tide
Wed -- 06:36 PM PDT     7.94 feet High Tide
Wed -- 08:18 PM PDT     Sunset
Wed -- 08:44 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
44.75.86.97.88.17.66.54.82.91.30.30.10.82.13.95.677.87.97.36.55.54.8

Tide / Current Tables for Hale Passage, 0.5 miles SE of Lummi Pt, Washington Current
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Hale Passage
Click for Map
Wed -- 12:01 AM PDT     0.00 knots Slack
Wed -- 02:56 AM PDT     1.39 knots Max Flood
Wed -- 05:18 AM PDT     New Moon
Wed -- 05:20 AM PDT     -0.00 knots Slack
Wed -- 06:01 AM PDT     Sunrise
Wed -- 06:35 AM PDT     Moonrise
Wed -- 09:30 AM PDT     -1.49 knots Max Ebb
Wed -- 12:31 PM PDT     0.00 knots Slack
Wed -- 03:46 PM PDT     2.08 knots Max Flood
Wed -- 07:21 PM PDT     -0.00 knots Slack
Wed -- 08:16 PM PDT     Sunset
Wed -- 08:42 PM PDT     Moonset
Wed -- 10:13 PM PDT     -0.88 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-00.61.21.410.3-0.3-0.8-1.2-1.4-1.4-1-0.40.51.422.11.71.10.3-0.3-0.7-0.9-0.7

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 (8,2,3,4)
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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.