Wednesday, April26, 2017 L-36.com


Marine Weather and Tides
Aberdeen, 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 6:03AMSunset 8:21PM Wednesday April 26, 2017 4:50 AM PDT (11:50 UTC) Moonrise 5:42AMMoonset 7:47PM 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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PZZ110 Grays harbor bar- 300 am pdt Wed apr 26 2017 combined seas 7 to 9 ft. Bar conditions moderate. Maximum ebb currents will occur around 5 am and 530 pm today. The morning ebb will be strong. 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 Aberdeen, WA
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location: 46.97, -123.85     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
WPTW1 - 9441102 - Westport, WA 14 mi75 min W 18 G 22 47°F 52°F1010 hPa
TOKW1 - 9440910 - Toke Point, WA 19 mi51 min WSW 8.9 G 14 49°F 52°F1010.4 hPa (+0.0)
46211 - Grays Harbor, WA (036) 22 mi59 min 52°F6 ft
46099 38 mi121 min WSW 12 48°F 51°F1009.2 hPa

Wind History for Westport, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Hoquiam, Bowerman Airport, WA6 mi58 minS 109.00 miOvercast49°F48°F97%1010.2 hPa

Wind History from HQM (wind in knots)
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Last 24hrSE8E7E8E9E13E8E9E9SE9E13E13E11E14E12E10E9SW15SW14SW19SW16SW15
G25
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1 day agoE8NE10NE9NE7NE9NE8NE8NE7--SE7W9W16W12W12W11W10SW10W9W3S9S8S7SE73
2 days agoNE6NE7E6E7NE9E10SE10S11S8S12S13S13S15S11S9S11S6S8SE5SE8SE8E8E9NE7

Tide / Current Tables for Aberdeen, Washington
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Aberdeen
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Wed -- 01:35 AM PDT     10.89 feet High Tide
Wed -- 05:18 AM PDT     New Moon
Wed -- 06:07 AM PDT     Sunrise
Wed -- 06:41 AM PDT     Moonrise
Wed -- 07:59 AM PDT     -1.49 feet Low Tide
Wed -- 02:18 PM PDT     9.91 feet High Tide
Wed -- 08:08 PM PDT     0.64 feet Low Tide
Wed -- 08:19 PM PDT     Sunset
Wed -- 08:46 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
9.510.710.89.67.44.71.9-0.5-1.5-0.51.94.56.98.99.99.68.26.13.81.70.71.43.66.2

Tide / Current Tables for Grays Harbor Entrance, Washington Current
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Grays Harbor Entrance
Click for Map
Wed -- 01:37 AM PDT     -0.00 knots Slack
Wed -- 05:04 AM PDT     -4.18 knots Max Ebb
Wed -- 05:18 AM PDT     New Moon
Wed -- 06:08 AM PDT     Sunrise
Wed -- 06:43 AM PDT     Moonrise
Wed -- 08:17 AM PDT     0.01 knots Slack
Wed -- 11:18 AM PDT     2.90 knots Max Flood
Wed -- 02:25 PM PDT     -0.01 knots Slack
Wed -- 05:29 PM PDT     -3.19 knots Max Ebb
Wed -- 08:18 PM PDT     0.01 knots Slack
Wed -- 08:20 PM PDT     Sunset
Wed -- 08:47 PM PDT     Moonset
Wed -- 11:10 PM PDT     2.82 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.21-0.7-2.6-3.7-4.2-3.8-2.4-0.51.22.42.92.82.10.8-1-2.4-3.1-3.1-2.2-0.51.12.32.8

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 (7,2,3,4)
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Ground Weather Radar Station Portland, OR
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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.