Wednesday, January17, 2018 L-36.com


Marine Weather and Tides
Markham, WA

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
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.

Sunrise 7:52AMSunset 4:58PM Wednesday January 17, 2018 5:31 PM PST (01:31 UTC) Moonrise 8:15AMMoonset 5:50PM Illumination 2% Phase: Waxing Crescent; Moon at 1 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- 223 Pm Pst Wed Jan 17 2018
.small craft advisory for severe bar conditions in effect through Thursday afternoon... Combined seas 16 to 22 feet with breakers covering the bar. Bar conditions severe. Maximum ebb currents will occur around 445 pm today and 515 am Thu. The afternoon ebb will be strong.
PZZ100 223 Pm Pst Wed Jan 17 2018
Synopsis for the northern and central washington coastal and inland waters..A cold front over western washington this afternoon will move inland tonight. Strong low pressure offshore will create strong pressure gradients over area waters for the next several days. Gales are likely at times, especially on the coast. West southwest swell will build to 27 to 33 feet over the coastal waters Thursday.

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 172255
afdsew
area forecast discussion
national weather service seattle wa
255 pm pst Wed jan 17 2018

Synopsis A cold front will move onshore tonight. Large waves
will impact the coast Thursday. Thursday through Saturday will be
showery with an upper trough over the area. Additional fronts will
move through the area Sunday and around Tuesday night.

Short term A cold front will move onshore this evening with
rain turning to showers tonight. Showery weather will continue
Thursday through Saturday with a broad upper trough over the
region.

Advisory strength winds coast and northwest interior should end
this afternoon but it will be breezy to windy at times the next
few days for many areas with a deep low offshore to the northwest
and good southeast gradients across western washington.

The mountains should pick up some snow later tonight and into
Thursday as snow levels come down. Locations like mount baker
might get marginal advisory amounts Thursday or Thursday night.

Confidence is only 50 50 that advisory amounts will fall so no
headlines lines are in effect for now. Schneider

Long term A frontal system will bring a shot of rain late
Saturday night and Sunday along with some breezy to windy
conditions. Showers will linger into Monday but they should be
tapering or even ending by Tuesday as a weak upper ridge builds
over the area. Another front should reach the area Tuesday night
and Wednesday for more rain. Schneider

Aviation The cold front is over western washington this
afternoon with areas of lower vsby in rain and some moderate and
locally heavy rain. The mountains are obscured. Strong SW flow
aloft. Locally blustery winds, but mainly coast and north part. The
rain will turn to scattered showers behind the front and Thursday
will be showery and breezy.

Ksea... Rain with the cold front late this afternoon will likely drop
the vsby at times to 3-5sm in moderate rain. The rain changes to
showers behind the front later this evening.

Marine A deep low far to the northwest will create strong
southeasterly pressure gradients over area waters for the next
several days. A cold front over western washington this afternoon
will move inland later this evening. Gale warnings are up for the
coastal waters and northern waters east entrance, and gales are
possible again Friday and Saturday, especially on the coast.

Strong southwest winds offshore will generate large swell that will
reach the washington coast Thursday. Models have been consistent in
bringing swells of 25-30 ft to the coast, with even larger swells
offshore. Seas have not reached 30 ft at buoy 41 since december
2015. A coastal flood warning is in effect for the coast. This sort
of coastal flooding mainly affects the beaches as waves run far up
beyond where they usually do. Coastal towns such as ocean shores and
westport could see waves crash over breakwaters and sea water could
collect in low areas.

Hydrology A wet frontal system this weekend could push the
skokomish river in mason county above flood stage around Sunday.

Otherwise, river flooding is not expected for the next 7 days.

Sew watches warnings advisories
Wa... Wind advisory until 6 pm pst this evening for admiralty inlet
area-central coast-north coast-san juan county-western
skagit county-western whatcom county.

Coastal flood warning from 4 am to 10 pm pst Thursday for
central coast-north coast.

Pz... Small craft advisory for rough bar until 3 pm pst Thursday for
grays harbor bar.

Gale warning until 3 pm pst Thursday for coastal waters from
cape flattery to james island 10 to 60 nm-coastal waters
from CAPE flattery to james island out 10 nm-coastal waters
from james island to point grenville 10 to 60 nm-coastal
waters from james island to point grenville out 10 nm-
coastal waters from point grenville to CAPE shoalwater 10
to 60 nm-coastal waters from point grenville to cape
shoalwater out 10 nm.

Gale warning until 10 pm pst this evening for east entrance u.S.

Waters strait of juan de fuca-northern inland waters
including the san juan islands.

Small craft advisory until 4 am pst Thursday for admiralty inlet-
central u.S. Waters strait of juan de fuca-puget sound and
hood canal-west 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 6 mi56 min S 18 G 28 51°F 49°F1005.6 hPa
46211 - Grays Harbor, WA (036) 13 mi32 min 51°F18 ft
TOKW1 - 9440910 - Toke Point, WA 13 mi44 min 49°F1006.6 hPa
46243 - Clatsop Spit, OR - 162 47 mi32 min 51°F19 ft
ASTO3 - 9439040 - Astoria, OR 49 mi44 min 51°F 1007.6 hPa

Wind History for Westport, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Hoquiam, Bowerman Airport, WA6 mi39 minSSE 19 G 276.00 miFog/Mist and Breezy52°F48°F89%1006.8 hPa

Wind History from HQM (wind in knots)
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Last 24hrE6NE8E8NE7E7NE7NE7NE9E12NE11E10NE8NE10E15NE11E11E11NE12NE14E9
G20
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1 day agoNE9E7E7S5E11E10SE12
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2 days agoNE6E12E11E12E11E12E10E11NE8NE9E10E8E11E12E11E10E12E15NE16
G23
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G21
E11NE12E12NE7

Tide / Current Tables for Markham, Grays Harbor, Washington
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Markham
Click for Map
Wed -- 01:31 AM PST     9.16 feet High Tide
Wed -- 06:48 AM PST     4.01 feet Low Tide
Wed -- 07:55 AM PST     Sunrise
Wed -- 08:14 AM PST     Moonrise
Wed -- 12:46 PM PST     10.43 feet High Tide
Wed -- 04:57 PM PST     Sunset
Wed -- 05:50 PM PST     Moonset
Wed -- 07:25 PM PST     0.33 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
8.199.18.37.15.74.444.96.47.99.210.210.49.78.163.91.80.50.61.93.65.5

Tide / Current Tables for Grays Harbor Entrance, Washington Current
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Grays Harbor Entrance
Click for Map
Wed -- 01:49 AM PST     -0.01 knots Slack
Wed -- 04:45 AM PST     -2.04 knots Max Ebb
Wed -- 07:19 AM PST     0.00 knots Slack
Wed -- 07:56 AM PST     Sunrise
Wed -- 08:15 AM PST     Moonrise
Wed -- 10:06 AM PST     1.67 knots Max Flood
Wed -- 01:04 PM PST     -0.01 knots Slack
Wed -- 04:48 PM PST     -3.59 knots Max Ebb
Wed -- 04:57 PM PST     Sunset
Wed -- 05:50 PM PST     Moonset
Wed -- 08:09 PM PST     0.01 knots Slack
Wed -- 11:27 PM PST     2.26 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
21.1-0.2-1.3-1.9-2-1.4-0.40.71.41.71.51.10.1-1.4-2.7-3.4-3.6-3-1.7-0.21.11.92.2

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 (20,4,5,8)
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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.