Saturday, July22, 2017 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 5:42AMSunset 9:00PM Saturday July 22, 2017 1:44 PM PDT (20:44 UTC) Moonrise 4:01AMMoonset 7:28PM Illumination 1% Phase: Waning Crescent; Moon at 29 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- 858 am pdt Sat jul 22 2017 combined seas 3 to 5 ft. Bar conditions light. Maximum ebb currents will occur around 445 pm today and 500 am on Sunday morning. The Sunday morning ebb will be very strong. PZZ100 858 Am Pdt Sat Jul 22 2017
Synopsis for the northern and central washington coastal and inland waters..A surface high pressure ridge over southwest washington this morning will quickly shift to the northern end of vancouver island this evening, bringing a northerly component to this evening's moderate onshore flow. Onshore flow will continue Sunday and Monday, then strengthen Tuesday with westerly gales possible in the strait of juan de fuca.

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 221629
afdsew
area forecast discussion
national weather service seattle wa
930 am pdt Sat jul 22 2017

Synopsis Higher pressure aloft will build over the region
through tonight with dry conditions and diminishing cloud cover
starting this afternoon. Low level onshore flow will return for dry
weather and moderate temperatures through much of next week.

Short term An upper level low off the coast of northern bc
was drifting northeast this morning and is expected to continue to
do so through tonight. An associated weak shortwave wiggled onshore
into bc overnight bringing clouds into western washington and some
very light rain from the northern olympic peninsula to the northern
cascades. As of mid morning, the precipitation was tapering off and
should see the Sun reappear in many locations this afternoon. Have
adjusted the forecasts to reflect these short-term conditions.

What's left of the upper low is expected to move inland across
western canada later tonight through Sunday night. This change
should encourage some stronger low level onshore flow that will
bring more marine cloudiness into western washington overnight and
Sunday morning. Then ridging aloft with rising heights should ease
the onshore flow for more sunshine and warmer daytime temps Monday.

No significant rain in sight. Buehner

Long term From the previous discussion...

a split in the flow Tuesday will allow for upper level ridging to be
the main weather feature for W wa while an upper level low spins up
off the ca coast... Allowing for the prospect for precip to climb
north into or. Current models look to be in agreement that nothing
associated with this low will make it as far north as wa... But given
its proximity this may be a feature to keep an eye on in future
runs. The upper ridge pushes east Wed with an upper trough expected
over the area for thu. Models in agreement that this troughiness
will linger into the weekend... But not much in the way of precip
expected for the area. This level of activity for the second half of
the upcoming week will allow for temps to fall a few degrees
allowing for more mild summer weather over W wa. Smr

Aviation The base of an eastward-moving upper trough will brush
by western washington through Sunday, with moderate westerly flow
aloft. A moist low-level air mass is in place, with dewpoints
toppoing out near 60f over the lowlands this afternoon. Could lead
to sea fog near the strait, including the vicinity of clm.

Elsewhere, CIGS will lift some this afternoon, but abundance of
moisture will lead to easy development of CU field.

Ksea... S-sw wind will become northerly around 00z-02z, with
northerly flow then continuing through Sunday and beyond. CIGS will
rise slowly today. Any clearing will be somewhat temporary given the
moistness of the air mass, since cumulus will easily fill back in.

Should be a few hours of clearing this evening, but then the
moistness of the air mass will probably lead to CIGS in the 010-020
range on Sunday morning. Haner

Marine A surface high pressure ridge was nudging inland this
morning across southwest washington, leading to light gradients.

This ridge will become re-establish near the northern end of
vancouver island this evening, leading to a northerly component to
our wind and pressure field. Moderate onshore flow will also develop
this afternoon and evening, with small craft advisory strength winds
through the strait tonight. Moderate onshore flow will then continue
through at least Monday, with a daily repeat each evening of sca
strength winds through the strait and NW wind over the coastal
waters.

A particularly moist low-level air mass is arriving this afternoon,
with surface dewpoints near 60f later today. Especially over the
cooler waters of the eastern strait of juan de fuca, this could lead
to the development of sea fog. Dewpoints will come down a couple
degrees on Sunday, so extent of sea fog should diminish a bit
tomorrow. Haner

Sew watches warnings advisories
Wa... None.

Pz... Small craft advisory from 6 pm this evening to 3 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 6 mi68 min SSW 6 G 8.9 63°F 60°F1022.5 hPa
46211 - Grays Harbor, WA (036) 13 mi44 min 60°F3 ft
TOKW1 - 9440910 - Toke Point, WA 13 mi44 min W 5.1 G 8 67°F 65°F1022.6 hPa (+0.0)
46243 - Clatsop Spit, OR - 162 47 mi44 min 65°F3 ft
46041 - CAPE ELIZABETH- 45NM Northwest of Aberdeen, WA 49 mi54 min W 1.9 G 3.9 62°F 62°F3 ft1022.4 hPa (+0.5)
ASTO3 - 9439040 - Astoria, OR 49 mi44 min WSW 12 G 14 66°F 71°F1021.8 hPa (-0.3)

Wind History for Westport, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Hoquiam, Bowerman Airport, WA6 mi51 minW 88.00 miOvercast67°F63°F87%1023 hPa

Wind History from HQM (wind in knots)
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Last 24hrW11W11W10W9W7W6W4SW4SW5SW3CalmCalmSE3SE4E4E43CalmCalm4CalmW6SW8W8
1 day agoSW11SW13SW10SW10SW10SW9SW8SW8SW7CalmCalmCalmNE5NE4CalmNE3E4NE4NE4E4S3W5W6W10
2 days agoSW13SW11SW14SW13SW14SW11SW10SW7SW7S6S6S8SW9W4SW3SW3S3S5S5SW5S8S5SW8SW10

Tide / Current Tables for Markham, Grays Harbor, Washington
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Markham
Click for Map
Sat -- 12:01 AM PDT     10.09 feet High Tide
Sat -- 05:01 AM PDT     Moonrise
Sat -- 05:44 AM PDT     Sunrise
Sat -- 06:42 AM PDT     -2.50 feet Low Tide
Sat -- 01:24 PM PDT     8.08 feet High Tide
Sat -- 06:46 PM PDT     1.43 feet Low Tide
Sat -- 08:27 PM PDT     Moonset
Sat -- 08:59 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
10.19.57.95.62.90.1-2-2.4-1.20.735.2787.96.95.43.51.91.52.64.56.68.4

Tide / Current Tables for Grays Harbor Entrance, Washington Current
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Grays Harbor Entrance
Click for Map
Sat -- 12:25 AM PDT     -0.01 knots Slack
Sat -- 04:09 AM PDT     -4.36 knots Max Ebb
Sat -- 05:02 AM PDT     Moonrise
Sat -- 05:44 AM PDT     Sunrise
Sat -- 07:35 AM PDT     0.01 knots Slack
Sat -- 11:00 AM PDT     2.85 knots Max Flood
Sat -- 01:46 PM PDT     -0.01 knots Slack
Sat -- 04:42 PM PDT     -2.57 knots Max Ebb
Sat -- 07:20 PM PDT     0.01 knots Slack
Sat -- 08:28 PM PDT     Moonset
Sat -- 09:00 PM PDT     Sunset
Sat -- 10:27 PM PDT     2.40 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.7-1.1-2.7-3.8-4.4-4-2.7-10.61.92.62.92.51.3-0.3-1.6-2.4-2.5-1.8-0.50.91.92.32.3

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 (16,3,4,5)
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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.