Saturday, August24, 2019 L-36.com


Marine Weather and Tides
Hoquiam, WA

Version 3.4
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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 6:22AMSunset 8:12PM Saturday August 24, 2019 2:33 PM PDT (21:33 UTC) Moonrise 11:54PMMoonset 2:43PM Illumination 31% Phase: Waning Crescent; Moon at 24 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- 851 am pdt Sat aug 24 2019 combined seas 4 to 6 ft. Bar conditions light. Maximum ebb currents will occur around 1115 am Saturday and 1215 am Sunday.
PZZ100 851 Am Pdt Sat Aug 24 2019
Synopsis for the northern and central washington coastal and inland waters..Onshore flow will continue through Monday before turning offshore on Tuesday as a thermal trough builds north along the west coast.


7 Day Forecast for Marine Location Near Hoquiam, WA
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location: 46.98, -123.95     debug


Area Discussion for - Seattle, WA
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Fxus66 ksew 241603
afdsew
area forecast discussion
national weather service seattle wa
903 am pdt Sat aug 24 2019

Update A weak shortwave trough is progressing rather quickly
across the state of washington this morning and is readily
apparent in water vapor imagery. This shortwave is embedded
within a larger scale cyclonic flow regime that essentially
extends from alaska into the northern rockies, with best strongest
shortwave energy across bc. Associated with some of this stronger
energy in bc is a weak sfc reflection in the haida gwaii vicinity
that has carried a trailing cold front southward towards the
coastal waters of the pacific northwest. Some shower activity is
seen along the washington coast with this weakening frontal
boundary. These showers will continue to push inland over the next
few hours this morning before gradually diminishing with eastward
progress. Therefore, best chance of rain into much of the
afternoon with remain west of puget sound, with mostly cloudy
skies expected across the area with some Sun breaks.

Behind the weak front later this afternoon into the evening will
be a decent onshore push of westerly winds. Some hi-res guidance
is showing a weak convergence zone developing in the northern
sound vicinity as westerly winds down the strait of juan de fuca
push into the north sound and converge with SW low level flow in
the central south sound. Therefore have added a slight chance
showers in this timeframe across this area and into portions of
king and snohomish counties. Any QPF resulting from shower
activity will be light, assuming this zone even develops.

Little change in the pattern overnight into Sunday morning, though
heights will begin to quickly rise late in the day as a ridge
across the pacific into california and the desert SW begins to
build north.

Aside from an adjustment to the pops wx forecast to account for
potential convergence zone later today, the rest of the forecast
is on track and was left as is. Previous discussion included below
with an aviation and marine discussion update.

Kovacik

Prev discussion issued 311 am pdt Sat aug 24 2019

Synopsis A weak upper level trough will move by to the north
today and tonight. An upper level ridge will begin building
offshore on Sunday. The ridge will continue to build and shift
over western washington Tuesday and Wednesday with the low level
flow going light offshore. The ridge will weaken Thursday and
Friday with low level onshore flow returning to the area.

Short term today through Monday Satellite imagery shows
cloudy skies over western washington at 3 am 10z. Most of the
cloud cover is of the mid and high variety. Temperatures were in
the 50s to lower 60s.

Lots of cloud cover today into tonight as a weak trough moves by
to the north. Could be enough lift with the trough to produce a
few showers from about a bellingham to astoria line westward today
and mainly over the cascades this evening. Any precipitation that
does develop will be light. With the cloud cover high temperatures
will continue to be a little below normal, in the mid 60s to mid
70s. Lows tonight mostly in the 50s.

Increasing low level onshore flow later tonight into Sunday with
the trough east of the area. Low clouds developing along the coast
spreading inland Sunday morning. Marine layer not deep enough to
get the stratus all the way to the cascade crest but deep enough
to keep skies mostly cloudy through the morning hours. Upper level
ridge beginning to build offshore with 500 mb heights rising over
western washington but too late to warm high temperatures Sunday
with readings once again in the mid 60s to mid 70s.

Upper level ridge continuing to build offshore Sunday night into
Monday with the surface gradients going northwesterly. This will
limit the cloud cover in the morning on Monday. Monday morning
the coolest morning of the month with lows in the mid 40s to mid
50s. Highs on Monday warming a little, into the 70s.

Long term Tuesday through Friday Upper level ridge moving
over western washington Tuesday and Wednesday with 500 mb heights
in the lower to mid 580 dms. Low level flow turning offshore but
00z runs are weaker with this development versus previous runs.

Models still have 850 mb temperatures warming into the plus 16 to
plus 20c range but with the weaker offshore flow scenario will
have the warmest locations near 90 with the remainder of the area
in the mid 70s to upper 80s. The weaker offshore flow scenario
leads to a quicker return to low level onshore flow on Thursday
as the upper level ridge begins to weaken. Upper level ridge
continues to weaken on Friday with low level onshore flow. The
models have a weak surface low over the oregon and washington
coastal waters limiting the strength of the onshore flow. For now
will go with a 2 day weak push scenario with around 5 degrees of
cooling both Thursday and Friday. Felton

Aviation Westerly flow aloft will become more northwesterly today
as an upper level trough departs the area. Onshore flow at the
surface. GenerallyVFR CIGS at this hour with MVFR along the coast
and across a swath of the puget sound near ksea and kbfi. ExpectVFR
cigs by late morning across the area with mid to high level clouds
through the afternoon. Winds generally southerly becoming more
northerly for some by later this afternoon. Winds 5-10 knots.

Ksea... MVFR CIGS have developed with MVFR possibly through the next
few hours. Expect improvement toVFR by late morning midday. Mid to
high clouds this afternoon. Southwesterly winds becoming more
northerly into this evening. Winds 5-10 knots. Jd

Marine Onshore flow continues through today. A weak front will
move across the area today with another westerly push down the
strait this evening into tonight. Gradients look stronger with this
push but still under gale criteria so have small craft advisory for
the central and eastern strait of juan de fuca through tonight.

Onshore flow through Monday with offshore flow Tuesday and through
much of next week. Jd

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 4 pm this afternoon to 5 am pdt Sunday
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
WPTW1 - 9441102 - Westport, WA 10 mi58 min NW 13 G 15 62°F 63°F1016.7 hPa
46211 - Grays Harbor, WA (036) 18 mi34 min 62°F5 ft
TOKW1 - 9440910 - Toke Point, WA 19 mi52 min NW 9.9 G 12 65°F 66°F1016.9 hPa
46099 33 mi104 min NW 3.9 61°F 1016.7 hPa
46041 - CAPE ELIZABETH- 45NM Northwest of Aberdeen, WA 49 mi44 min NNE 1.9 G 3.9 62°F 63°F4 ft1017.3 hPa (+1.1)

Wind History for Westport, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Hoquiam, Bowerman Airport, WA1 mi41 minW 138.00 miMostly Cloudy67°F60°F79%1017 hPa

Link to 5 minute data for KHQM

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Last 24hrW11W11NW7NW7NW5--------NW4NW4CalmW4W4SW7SW5S5S7SW7SW6SW6SW6W10W13
1 day agoW9W10--W9------NW5--NW3--CalmCalmCalmCalm--CalmE3CalmE5SE5S3SW3W7
2 days agoW8SW6NW9NW12
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NW9--NW7W9--W6NW4--W5NW4CalmCalmCalmNW3NW3W5W8W7SW7W8

Tide / Current Tables for Moon Island, North Channel, Grays Harbor, Washington
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Moon Island
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Sat -- 12:13 AM PDT     Moonrise
Sat -- 02:07 AM PDT     1.06 feet Low Tide
Sat -- 06:24 AM PDT     Sunrise
Sat -- 08:36 AM PDT     6.38 feet High Tide
Sat -- 01:49 PM PDT     3.35 feet Low Tide
Sat -- 03:43 PM PDT     Moonset
Sat -- 08:08 PM PDT     8.62 feet High Tide
Sat -- 08:10 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.71.61.11.42.63.84.85.76.36.35.74.843.53.43.95.16.67.68.38.68.47.45.8

Tide / Current Tables for Grays Harbor Entrance, Washington Current
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Grays Harbor Entrance
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Sat -- 12:14 AM PDT     Moonrise
Sat -- 02:42 AM PDT     0.00 knots Slack
Sat -- 05:04 AM PDT     1.13 knots Max Flood
Sat -- 06:25 AM PDT     Sunrise
Sat -- 08:40 AM PDT     -0.00 knots Slack
Sat -- 11:22 AM PDT     -1.39 knots Max Ebb
Sat -- 02:17 PM PDT     0.00 knots Slack
Sat -- 03:43 PM PDT     Moonset
Sat -- 04:51 PM PDT     1.43 knots Max Flood
Sat -- 08:11 PM PDT     Sunset
Sat -- 08:19 PM PDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-2.4-1.8-0.80.30.91.110.80.5-0.3-1-1.4-1.3-1-0.30.71.31.41.20.80.2-0.6-1.7-2.5

Weather Map and Satellite Images
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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 Seattle, WA (17,4,5,8)
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Ground Weather Radar Station Portland, OR
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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.