Thursday, May24, 2018 L-36.com


Marine Weather and Tides
Markham, 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 5:27AMSunset 8:57PM Thursday May 24, 2018 2:36 PM PDT (21:36 UTC) Moonrise 2:43PMMoonset 2:34AM Illumination 75% Phase: Waxing Gibbous; Moon at 10 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- 859 am pdt Thu may 24 2018 combined seas 5 to 7 ft. Bar conditions light to moderate. Maximum ebb currents will occur around 130 pm this afternoon and 215 am early Friday morning. PZZ100 859 Am Pdt Thu May 24 2018
Synopsis for the northern and central washington coastal and inland waters..Moderate to sometimes strong onshore flow will continue through the memorial day weekend. This will lead to near-gale or gale conditions over the central and eastern strait of juan de fuca, mainly during the late afternoon through overnight hours.

7 Day Forecast for Marine Location Near Markham, WA
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location: 46.89, -124     debug


Area Discussion for - Seattle, WA
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Fxus66 ksew 241631
afdsew
area forecast discussion
national weather service seattle wa
931 am pdt Thu may 24 2018

Synopsis An onshore flow pattern will prevail for the next
several days for night and morning clouds and partial afternoon
sunshine most days. An upper trough could bring some showers
around the middle of next week.

Short term A marine push has brought low clouds and some
drizzle this morning. The drizzle threat should end late this
morning and low clouds will lift and break up a bit in the
afternoon with daytime heating. Highs will be cooler today.

An upper trough will move over the area Friday but it looks dry.

Low level onshore flow will continue for more night and morning
clouds and partial afternoon sunshine. Highs will be near normal.

More of the same is expected for Saturday with low level onshore
flow continuing. A weak upper short wave could bring some drizzle
Saturday morning. Schneider

Long term Previous discussion... High pressure aloft or nearly
zonal flow aloft will prevail over the region Sunday and memorial
day. This combined with weaker surface onshore flow will result in
temps being a few degrees above normal.

Beyond memorial day, confidence in the forecast was not high due
to timing differences in the medium range models concerning a
strong upper level trof. This trof may impact the pacific
northwest about the middle of next week. Have chosen to
compromise between the slower (gfs canadian) and faster (ecmwf)
solutions. With that in mind, anticipate the upper level trof to
approach the region on Tuesday and initiate a marine push.

Cloudier and cooler conditions, along with a chance of showers,
are anticipated on Wednesday. Temps on Wednesday are currently
forecast to be below normal. The snow levels are forecast to
lower into 5500 (west) to 7500 feet (east) range.

Aviation An upper ridge over eastern washington will continue
to move east today, and the tail end of a weak upper trough will
brush by western washington on Friday. Moderate southwest flow
aloft will continue. Low-level onshore flow will continue to
advect marine clouds onshore, though they will burn off over the
interior this afternoon and again around mid-day on Friday. The
low-level air mass will be moist and stable, while the air mass
above the marine layer will by dry and stable.

Ksea... Current cloud depth based on pilot reports suggests
scattering of marine clouds around 21z (1 pm). A shift to north
surface wind is expected around 01z (6 pm). Should be a gradual
shift. Haner

Marine Gales ended at race rocks around 7 am, and the uil-bli
gradient was down to +0.9 mb at 8 am. West wind through the strait
will undergo a typical diurnal rise late this afternoon and this
evening. Currently forecasting high-end small craft advisory
strength wind in the central and eastern strait this evening, but
a gale is certainly within the margin of error. Clouds and less
heating over the interior were one reason for hedging low.

Onshore flow should be a little stronger on Friday pm as the tail
end of a progressive upper trough brushes by. Gales in the
forecast for the strait on Friday evening.

Moderate to sometimes strong onshore flow will continue through
the memorial day weekend. Haner

Sew watches warnings advisories
Wa... None.

Pz... Small craft advisory from 5 pm this afternoon to 6 am pdt Friday
for coastal waters from point grenville to CAPE shoalwater
10 to 60 nm-coastal waters from point grenville to cape
shoalwater out 10 nm.

Small craft advisory until 4 pm pdt Friday for central u.S.

Waters strait of juan de fuca-east entrance u.S. Waters
strait of juan de fuca.

Small craft advisory from 4 pm this afternoon to 4 am pdt Friday
for admiralty inlet-northern inland waters including the
san juan islands.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
WPTW1 - 9441102 - Westport, WA 6 mi120 min NNW 11 G 16 55°F 56°F1019.8 hPa
46211 - Grays Harbor, WA (036) 13 mi66 min 54°F6 ft
TOKW1 - 9440910 - Toke Point, WA 13 mi66 min NW 8.9 G 13 57°F 59°F1019.8 hPa
46243 - Clatsop Spit, OR - 162 47 mi66 min 56°F5 ft
ASTO3 - 9439040 - Astoria, OR 49 mi66 min NW 2.9 G 6 60°F 60°F1019 hPa

Wind History for Westport, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Hoquiam, Bowerman Airport, WA6 mi43 minWSW 139.00 miMostly Cloudy62°F51°F67%1019.6 hPa

Wind History from HQM (wind in knots)
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Last 24hrW12W14W11W12W12W10W10W9W9W9W9W8W8W9W8W5W6W8W4W8W9W12W10W13
1 day agoW12W11W10W9W7SW4W4W4W3SW3W3W4CalmCalmCalmCalmW3W43W7W9SW13SW11SW12
2 days agoW12W13W12W12W7W9SW3W4W4W3CalmCalmCalmN3CalmCalmCalmSE3SE4S5S6SW10SW13W13

Tide / Current Tables for Markham, Grays Harbor, Washington
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Markham
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Thu -- 03:30 AM PDT     1.44 feet Low Tide
Thu -- 03:34 AM PDT     Moonset
Thu -- 05:31 AM PDT     Sunrise
Thu -- 09:43 AM PDT     7.33 feet High Tide
Thu -- 03:40 PM PDT     0.59 feet Low Tide
Thu -- 03:43 PM PDT     Moonrise
Thu -- 08:55 PM PDT     Sunset
Thu -- 10:24 PM PDT     8.88 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
6.34.72.81.61.62.43.54.96.27.17.36.75.542.30.90.71.534.76.588.88.7

Tide / Current Tables for Grays Harbor Entrance, Washington Current
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Grays Harbor Entrance
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Thu -- 01:16 AM PDT     -2.73 knots Max Ebb
Thu -- 03:34 AM PDT     Moonset
Thu -- 04:46 AM PDT     0.00 knots Slack
Thu -- 05:31 AM PDT     Sunrise
Thu -- 08:00 AM PDT     1.53 knots Max Flood
Thu -- 10:06 AM PDT     -0.00 knots Slack
Thu -- 01:30 PM PDT     -2.50 knots Max Ebb
Thu -- 03:44 PM PDT     Moonrise
Thu -- 04:30 PM PDT     0.00 knots Slack
Thu -- 08:15 PM PDT     2.22 knots Max Flood
Thu -- 08:55 PM PDT     Sunset
Thu -- 10:45 PM PDT     -0.01 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-2.2-2.7-2.5-1.7-0.70.20.91.31.51.20.1-1-1.9-2.4-2.4-1.7-0.50.51.41.92.221.1-0.4

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.