Tuesday, July14, 2020
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Marine Weather and Tides
Clallam Bay, 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 5:27AMSunset 9:11PM Tuesday July 14, 2020 9:26 AM PDT (16:26 UTC) Moonrise 12:26AMMoonset 2:32PM Illumination 32% 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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PZZ131 Central U.s. Waters Strait Of Juan De Fuca- 856 Am Pdt Tue Jul 14 2020
.small craft advisory in effect from 8 pm pdt this evening through late tonight...
Today..NW wind to 10 kt rising to 5 to 15 kt in the afternoon. Wind waves 2 ft or less.
Tonight..W wind 15 to 25 kt. Wind waves 2 to 4 ft.
Wed..W wind 5 to 15 kt becoming 10 to 20 kt in the afternoon. Wind waves 1 to 3 ft.
Wed night..W wind 20 to 30 kt easing to 15 to 25 kt after midnight. Wind waves 3 to 5 ft.
Thu..W wind 15 to 25 kt. Wind waves 2 to 4 ft.
Thu night..W wind 15 to 25 kt easing to 10 to 20 kt after midnight. Wind waves 2 to 4 ft.
Fri..W wind 10 to 20 kt rising to 15 to 25 kt. Wind waves 2 to 4 ft.
Sat..W wind to 10 kt rising to 10 to 20 kt. Wind waves 1 ft or less building to 1 to 3 ft.
PZZ100 856 Am Pdt Tue Jul 14 2020
Synopsis for the northern and central washington coastal and inland waters..Onshore flow will remain in place through the week with high pressure remaining well offshore and lower pressure inland.


7 Day Forecast for Marine Location Near Clallam Bay, WA
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location: 48.17, -123.98     debug


Area Discussion for - Seattle, WA
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FXUS66 KSEW 141608 AFDSEW

Area Forecast Discussion National Weather Service Seattle WA 908 AM PDT Tue Jul 14 2020

UPDATE. No changes were needed to the forecast this morning. A synoptic overview this morning depicts better upper level ridge influence over the local area compared to 24 hours ago. The source of the upper level ridge influence comes from an expansive area of high pressure centered over the North Pacific. At the surface, the reflection of the upper level anticyclone is also centered over the North Pacific, with ridge influence extending into western Washington.

Provided the pattern described above, subsidence aloft will allow sunny skies to prevail across the local area today. Visible satellite imagery this morning indicates some coastal stratus, but that will continue to retreat offshore through the remainder of the morning. High temps today will be a few degrees higher than yesterday with highs in the upper 70s to low 80s lowlands (upper 60s near the water).

Previous discussion provided below for reference, with an updated marine and aviation section.

Kovacik

PREV DISCUSSION. /issued 414 AM PDT Tue Jul 14 2020/

SYNOPSIS. High pressure will allow for drier, warmer conditions across the area through mid-week with Wednesday likely being the warmest day of the week. A weak frontal system will brush the area later Thursday and Friday with a few showers. Upper ridging will rebuild for drier and warmer conditions from the weekend into early next week.

SHORT TERM /TODAY THROUGH THURSDAY/. Upper ridging continues to build into the region this morning with clear skies across the area except for some patchy stratus near the coast. The low level flow will only be weakly onshore today and with rising heights temperatures most places will add another 2 to 4 degrees over yesterdays highs. Stratus will be more prevalent along the coast by late tonight and will likely be slower to clear there on Wednesday. Wednesday will be similar to today across most of the interior with plenty of sun and another 2 to 4 degrees of warming. By later Wednesday afternoon, onshore flow will strengthen and this will bring the stratus into the Puget Sound lowlands Thursday morning. Upper ridging will flatten on Thursday and a few showers could reach the north coast and north interior by late in the day. Temperatures will cool by several degrees, but to only slightly below normal this time around.

LONG TERM /FRIDAY THROUGH MONDAY/. Weak upper troughing lingers into Friday, but heights will be rebounding by late in the day as an upper ridge builds strongly into the offshore waters. In contrast to much of June and the first part of July, model ensembles largely favor mean upper ridging just offshore with weak troughing over the northern plains. And this points to a more sustained period of warmer and dry conditions for Western Washington as we enter next week. 27

AVIATION. Northwesterly flow aloft with upper level ridge well offshore. Meanwhile, onshore low-level flow continues through Wednesday. A few areas of low stratus/fog remain near the coast and along the lower Chehalis, but this shouldn't last much beyond 16- 17z. Elsewhere, clear skies through the evening, with some cumulus development into the late afternoon. Generally light wind this morning, with increasing breezes into the afternoon/evening. Expect a return of some clouds again near the coast and in the southwest interior late tonight.

KSEA . VFR under clear skies today. Light wind this morning, increasing closer to 6 to 9 knots this afternoon, but remaining generally northerly. Cullen

MARINE. Varying degrees of onshore flow into the weekend with high pressure over the coastal waters and lower pressure inland. Expect diurnally driven small craft advisory west winds through the central and east entrance to the Strait of Juan de Fuca each evening. Small craft advisory northwesterly winds over the southern portion of the coastal waters tonight. Meanwhile, seas build to 4 to 6 ft over the coastal waters and remain somewhat steep with dominant periods remaining generally 8 to 10 seconds. Cullen

HYDROLOGY. The daily hydrology discussion has ended until the start of the next rainy season; it will only be updated as needed until then.

CLIMATE. The high in Seattle on Monday was 76 degrees matching the normal high for the day. The forecast high of 77 degrees today will break the streak of 17 days in a row in Seattle with a high temperature at or below normal. Last day with a high above normal in Seattle, June 26 with 82 degrees. Felton

SEW WATCHES/WARNINGS/ADVISORIES. WA . None. PZ . Small Craft Advisory from 6 PM this evening to 2 AM PDT Wednesday for 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.

Small Craft Advisory from 8 PM this evening to 5 AM PDT Wednesday for Central U.S. Waters Strait Of Juan De Fuca- East Entrance U.S. Waters Strait Of Juan De Fuca.



www.weather.gov/seattle


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46267 20 mi57 min 52°F1 ft
PTAW1 - 9444090 - Port Angeles, WA 29 mi51 min 53°F
NEAW1 - 9443090 - Neah Bay, WA 36 mi57 min 54°F
LAPW1 - 9442396 - La Push, WA 39 mi51 min 48°F
DESW1 - Destruction Island, WA 43 mi87 min N 5.1 G 6 51°F 1021.7 hPa (+0.9)
46088 - New Dungeness, WA (Hein Bank) 44 mi47 min W 5.8 G 5.8 53°F 52°F1022.3 hPa52°F
46087 - Neah Bay, WA (Traffic Separation Lighted Buoy) 45 mi37 min SW 7.8 G 7.8 53°F 52°F3 ft1021.3 hPa (+0.7)

Wind History for Port Angeles, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Port Angeles Fairchild International Airport, WA26 mi34 minN 310.00 miFair60°F52°F75%1022.1 hPa

Link to 5 minute data for KCLM

Wind History from CLM (wind in knots)
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Last 24hrN53N54N4N5W9W10W5NW6W7W8W6W7W10W8W8W7SE3CalmW5CalmNW4N3
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2 days agoW7W6W63NW5CalmN3CalmN3N3CalmCalmCalmW3W4W7W8W8W12W9W9W8W11NW7

Tide / Current Tables for Twin Rivers, Strait of Juan de Fuca, Washington
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Twin Rivers
Click for Map
Tue -- 01:25 AM PDT     Moonrise
Tue -- 03:40 AM PDT     1.15 feet Low Tide
Tue -- 05:30 AM PDT     Sunrise
Tue -- 09:24 AM PDT     4.28 feet High Tide
Tue -- 03:21 PM PDT     1.88 feet Low Tide
Tue -- 03:32 PM PDT     Moonset
Tue -- 09:11 PM PDT     Sunset
Tue -- 09:32 PM PDT     5.92 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.62.81.91.31.21.72.43.13.84.24.23.83.12.62.21.922.73.74.55.35.85.95.4

Tide / Current Tables for Juan De Fuca Strait (East), British Columbia Current
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Juan De Fuca Strait (East)
Click for Map
Tue -- 01:23 AM PDT     Moonrise
Tue -- 04:40 AM PDT     -2.20 knots Max Ebb
Tue -- 05:29 AM PDT     Sunrise
Tue -- 10:45 AM PDT     0.00 knots Slack
Tue -- 12:58 PM PDT     0.30 knots Max Flood
Tue -- 02:52 PM PDT     -0.00 knots Slack
Tue -- 03:31 PM PDT     Moonset
Tue -- 05:46 PM PDT     -0.84 knots Max Ebb
Tue -- 09:10 PM PDT     Sunset
Tue -- 09:20 PM PDT     0.00 knots Slack
Tue -- 10:35 PM PDT     0.20 knots Max Flood
Tue -- 11:45 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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-0.2-0.8-1.3-1.8-2.1-2.2-2-1.6-1.2-0.7-0.30.10.20.30.2-0-0.4-0.8-0.8-0.7-0.4-0.10.20.2

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 (12,3,4,5)
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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.