Thursday, April2, 2020
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Marine Weather and Tides
Ocean City, WA

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 6:49AMSunset 7:48PM Thursday April 2, 2020 8:33 AM PDT (15:33 UTC) Moonrise 12:01PMMoonset 3:12AM Illumination 71% Phase: Waxing Gibbous; Moon at 9 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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PZZ156 Expires:202004030030;;460882 Fzus56 Ksew 021525 Cwfsew Coastal Waters Forecast For Washington National Weather Service Seattle Wa 825 Am Pdt Thu Apr 2 2020 Inland Waters Of Western Washington And The Northern And Central Washington Coastal Waters Including The Olympic Coast National Marine Sanctuary Pzz150-153-156-170-173-176-030030- Coastal Waters From Cape Flattery To James Island Out 10 Nm- Coastal Waters From James Island To Point Grenville Out 10 Nm- Coastal Waters From Point Grenville To Cape Shoalwater Out 10 Nm- Coastal Waters From Cape Flattery To James Island 10 To 60 Nm- Coastal Waters From James Island To Point Grenville 10 To 60 Nm- Coastal Waters From Point Grenville To Cape Shoalwater 10 To 60 Nm- 825 Am Pdt Thu Apr 2 2020
Today..W wind 5 to 15 kt. Wind waves 2 ft or less. W swell 5 ft at 9 seconds. A slight chance of showers.
Tonight..W wind 5 to 15 kt. Wind waves 2 ft or less. NW swell 5 ft at 9 seconds becoming sw 4 ft at 9 seconds after midnight. A slight chance of showers after midnight.
Fri..W wind 5 to 15 kt. Wind waves 1 to 3 ft. SW swell 4 ft at 9 seconds. A chance of showers in the morning then a slight chance of showers in the afternoon.
Fri night..NW wind 5 to 15 kt becoming to 10 kt after midnight. Wind waves 2 ft or less. SW swell 4 ft at 8 seconds.
Sat..SW wind 5 to 15 kt. Wind waves 2 ft or less. SW swell 4 ft at 7 seconds.
Sat night..N wind 5 to 15 kt. Wind waves 1 to 2 ft. SW swell 4 ft at 7 seconds.
Sun..N wind 5 to 15 kt. Wind waves 2 ft or less. W swell 4 ft building to nw 6 ft.
Mon..NW wind 5 to 15 kt. Wind waves 2 ft or less. W swell 7 ft.
PZZ100 825 Am Pdt Thu Apr 2 2020
Synopsis for the northern and central washington coastal and inland waters..A weak frontal boundary will hang across the interior waters through today, with high pressure offshore. From Friday through the weekend, the storm track will be oriented just offshore and into northern california, allowing for benign marine conditions across washington.


7 Day Forecast for Marine Location Near Ocean City, WA
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location: 47.09, -124.17     debug


Area Discussion for - Seattle, WA
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FXUS66 KSEW 020939 AFDSEW

Area Forecast Discussion National Weather Service Seattle WA 239 AM PDT Thu Apr 2 2020

SYNOPSIS. Lowland rain and mountain snow will continue off and on for the next several days as a series of weak systems pass through the area. Drier and warmer conditions are possible by the middle of next week.

SHORT TERM /TODAY THROUGH SATURDAY/. A weak upper level impulse will cross the area later today in northwest flow aloft. A mid level cloud deck has been filling in over Western Washington overnight ahead it. The majority of the shower activity that it will generate later this morning and into the afternoon is expected to be over the higher terrain of the Cascades and Olympics. Showers will diminish this evening, albeit briefly, before another upper trough dipping southward over the interior of British Columbia affects the region. Initially, precipitation will likely mostly confined to the North Interior and Cascades early Friday, but there may be enough low level onshore flow Friday afternoon to get a convergence zone going.

Onshore flow relaxes and the upper trough pushes eastward late Friday night for diminishing showers. As they've been previously advertising, the models slide some weak shortwave ridging across the area on Saturday ahead of another upper trough digging southward over the offshore waters. Most of Western Washington should see a generally dry on Saturday with the exception of perhaps a few showers wrapping around the trough into the Southwest Interior Saturday evening. Continuing the recent trend, temperatures through the short term forecast period are expected to remain below normal.

LONG TERM /SUNDAY THROUGH WEDNESDAY/. Following the trends that previous model runs were hinting at, the deterministic runs of both the GFS and Euro now take Saturday's offshore trough well south of the area Sunday into Monday and leave the region generally dry. Despite this, weak troughiness remains over the area and the GFS tries to get a few terrain driven showers going. For this reason, it seem wise to leave a chance or slight chance of showers in the forecast Sunday/Monday. But both operational model runs and ensemble means are pointing to some improvement by Tuesday/Wednesday as upper ridging offshore noses closer to the Pacific Northwest for possible drier conditions and temperatures a little closer to climatological norms. 27

AVIATION. Scattered to broken cloud cover resides across western Washington early this morning. With the exception of HQM, all TAF sites are VFR as of 2am. Model guidance has been suggestive of the development of an MVFR layer of clouds towards daybreak, however, given current trends, confidence is low in the overall coverage. This will be evaluated a bit more before the 12z update, along with the potential for patchy fog development around OLM and PWT. SCT-BKN VFR conditions should be the dominant cig this afternoon and evening. Scattered showers are expected again, mainly this afternoon across the entire area. Winds generally south 5-10kts thru the period, tho initially NE at BLI and overall more westerly at CLM and HQM.

KSEA . VFR cigs may give way to an MVFR stratus deck around daybreak. Conditions should improve back to VFR this afternoon. Scattered showers also expected late morning and into the evening hours. Winds S 5-10kts.

Kovacik

MARINE. A weak frontal boundary remains hung up over the area early this morning, roughly from Vancouver Island into the Eastern Strait and into the Cascades. This is allowing a Northeasterly wind to prevail across the Northern Inland Waters with onshore flow elsewhere. Overall gradients are light this morning with highest wind speeds around 10-15kts. This general trend will continue through the morning and into the afternoon hours, with no marine headlines needed. A weak westerly push is then expected down the Strait of Juan de Fuca later this afternoon and through much of the overnight hours. This is likely to be a marginal small craft wind event, with highest wind speeds around 21-22kts. These marginal winds may bleed into the adjacent Northern Inland Waters for a period of time overnight into Friday morning, so have expanded the SCA to account for this. Gradients appear to remained elevated enough for small craft advisory winds to continue across the central and eastern Strait through Friday.

An active pattern is expected to continue through the weekend with perhaps a dry period and tranquil period setting up for early next week. For now, see no notable marine hazards (wind nor seas) during this time.

Kovacik

HYDROLOGY. An unsettled pattern will continue into the weekend, but precipitation amounts are not expected to lead to flooding concerns.

SEW WATCHES/WARNINGS/ADVISORIES. WA . None. PZ . Small Craft Advisory from 5 PM this afternoon to 8 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 8 PM this evening to 8 AM PDT Friday for Northern Inland Waters Including The San Juan Islands.



www.weather.gov/seattle


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
WPTW1 - 9441102 - Westport, WA 13 mi58 min S 5.1 G 6 40°F 49°F1022.1 hPa
46211 - Grays Harbor, WA (036) 17 mi34 min 48°F5 ft
46099 22 mi104 min W 5.8 44°F 48°F1021.4 hPa
TOKW1 - 9440910 - Toke Point, WA 29 mi52 min ESE 7 G 8.9 40°F 49°F1022.7 hPa
46041 - CAPE ELIZABETH- 45NM Northwest of Aberdeen, WA 35 mi44 min WNW 9.7 G 14 42°F 48°F5 ft1022.1 hPa (+0.4)
DESW1 - Destruction Island, WA 44 mi34 min W 19 G 21 41°F 1021.7 hPa (+0.3)
46100 46 mi104 min W 7.8 43°F 48°F1020.9 hPa

Wind History for Westport, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Hoquiam, Bowerman Airport, WA13 mi41 minVar 310.00 miOvercast41°F41°F100%1022.6 hPa

Link to 5 minute data for KHQM

Wind History from HQM (wind in knots)
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Last 24hrE6E4E6E633N9NW5N10N9NW6NW4NW5CalmCalmCalmNW5N9NE43CalmSW8NE43
1 day agoS4NW8W6NW11W12SW13SW14W12W6SW16W12W9W12SW7S7SE6SE8E7CalmE8E8E11E9E7
2 days agoSW26
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Tide / Current Tables for Point Brown, Grays Harbor, Washington
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Point Brown
Click for Map
Thu -- 01:45 AM PDT     4.44 feet Low Tide
Thu -- 04:11 AM PDT     Moonset
Thu -- 06:52 AM PDT     Sunrise
Thu -- 07:42 AM PDT     8.36 feet High Tide
Thu -- 01:01 PM PDT     Moonrise
Thu -- 02:51 PM PDT     0.98 feet Low Tide
Thu -- 07:47 PM PDT     Sunset
Thu -- 09:50 PM PDT     7.27 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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54.64.556.17.27.98.38.37.96.85.23.72.41.411.62.845.26.377.36.8

Tide / Current Tables for Grays Harbor Entrance, Washington Current
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Grays Harbor Entrance
Click for Map
Thu -- 02:35 AM PDT     0.00 knots Slack
Thu -- 04:11 AM PDT     Moonset
Thu -- 04:56 AM PDT     1.06 knots Max Flood
Thu -- 06:52 AM PDT     Sunrise
Thu -- 08:09 AM PDT     -0.00 knots Slack
Thu -- 12:13 PM PDT     -2.64 knots Max Ebb
Thu -- 01:01 PM PDT     Moonrise
Thu -- 03:47 PM PDT     0.00 knots Slack
Thu -- 07:09 PM PDT     1.49 knots Max Flood
Thu -- 07:47 PM PDT     Sunset
Thu -- 10:13 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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-1.3-1.1-0.50.30.91.10.90.50.1-0.7-1.7-2.4-2.6-2.5-1.9-0.90.211.41.51.41.10.2-0.7

Weather Map
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wmap_P
GEOS 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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Seattle, WA (11,2,3,4)
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Ground Weather Radar Station Seattle/Tacoma, WA
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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 numerous 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.