Sunday, April23, 2017 L-36.com


Marine Weather and Tides
Clallam Bay, WA

Version 3.4
What's New / NOTES
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.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 6:04AMSunset 8:18PM Sunday April 23, 2017 12:46 PM PDT (19:46 UTC) Moonrise 4:06AMMoonset 3:58PM Illumination 6% Phase: Waning Crescent; Moon at 27 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- 900 Am Pdt Sun Apr 23 2017
Today..Variable wind to 10 kt in the morning becoming light. Wind waves 1 ft or less. A chance of showers in the morning then showers likely in the afternoon.
Tonight..SW wind to 10 kt. Wind waves 1 ft or less. A chance of showers in the evening then showers likely after midnight.
Mon..Light wind. Wind waves less than 1 ft. A chance of showers.
Mon night..W wind 10 to 20 kt rising to 15 to 25 kt after midnight. Wind waves 2 to 4 ft.
Tue..W wind 5 to 15 kt becoming E to 10 kt in the afternoon. Wind waves 2 ft or less.
Tue night..NE wind to 10 kt becoming W after midnight. Wind waves 1 ft or less.
Wed..W wind 15 to 25 kt rising to 25 to 35 kt. Wind waves 2 to 4 ft building to 4 to 6 ft.
Thu..W wind 20 to 30 kt rising to 25 to 35 kt. Wind waves 4 to 6 ft.
PZZ100 900 Am Pdt Sun Apr 23 2017
Synopsis for the northern and central washington coastal and inland waters..A weak surface trough will move ne across the area today. The associated upper level trough will bring areas of rain. A 1003 mb surface low offshore will approach the region tonight then slow and weaken near the north oregon coast Monday morning. A weak surface ridge will increase onshore flow Monday evening. An occluded front will approach the coast Tuesday then move inland Tuesday evening. Onshore flow will develop behind the front Tuesday night.

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 231617
afdsew
area forecast discussion
national weather service seattle wa
917 am pdt Sun apr 23 2017

Synopsis An upper level disturbance over the coastal waters
will push inland this afternoon and tonight giving an increase in
shower activity to the area. An upper level low will give mostly
cloudy conditions to the area on Monday and scattered showers.

A front will move across the area later Tuesday and Tuesday night
for another round of showers. Weak disturbances will give
continued showery weather to the region Wednesday through the end
of the week. Temperatures will generally be near or slightly
below normal for late april.

Short term Radars show rain on the coast and through the
chehalis gap gradually spreading northeastward into the interior
of western washington this morning. This precipitation is
associated with a vertically stacked low near 47n 129w. The
precipitation will spread in to about the seattle area aroun 1030
am then all the way to the canadian border by early afternoon.

Precipitation will quickly tend to become more showery in nature
during the afternoon hours, with numerous showers continuing this
evening then tapering off somewhat from the north overnight.

Clouds and precipitation will hold high temperatures in the 50s to
around 60 today.

The next system upstream is centered near 45n 140w and is moving
rapidly eastward on a rather strong westerly jet. The forecast
models now all center the landfall of this feature as a 1000-1004
mb low on the northwestern oregon coast late tonight into early
Monday morning. The movement of this low to our south is being
forced by its interaction with the upper low now over the
washington offshore waters, and the upper feature gradually shifts
eastward into western washington Monday afternoon then east of the
cascades Monday night. Cool air aloft associated with this upper
level feature will keep the threat of showers in the area Monday
through Monday night, but with the more unstable air mass, expect
some sunny intervals Monday afternoon from the north coast and
seattle or so northward. The warm late april Sun will allow
temperatures over the northern half of the forecast area on Monday
to approach 60 in the afternoon, while temperatures over the
southern half of the area are held in the 50s with the more
numerious showers there.

After a bit of a lull in shower activity late Monday night into
Tuesday morning, a negatively tilted warm occlusion will spread
precipitation onto the coast midday Tuesday then inland later in
the day. Showery weather will persist behind the front Tuesday
night.

Minor updates were made to the forecast this morning to refine
cloud cover forecasts for Monday, pops, and precipitation amounts.

Otherwise the forecasts are consistent with the previous package.

Albrecht

Long term From the previous long term discussion: upper level
ridging progged to push into the area Thursday night might be the
first promising hint of having more than 24 hours of dry
conditions. While models keep the initial onset of this ridge a
touch on the dirty side... Which may allow for a shower here or
there... The bulk of the period from Thursday night at least into
Saturday morning looks mostly dry. Even better is the fact that
current progs also nudging next upper level low on a more northern
track... Pushing it into northern portions of b.C. If that ends up
being the case... Dry conditions could persist for most of the cwa
(except the northern-most portions) into Sunday morning. Sunday
afternoon and evening may see some showers associated with this
system drift down into remainder of the cwa... As apparently the
bullet can only be dodged for so long. Good news from that is
ridging builds in again overnight Sunday and may just persist into
the first half of next week. Smr

Aviation An upper level trough will swing NE across W wa
through 06z bringing light rain to the area. Rain will spread
across puget sound through 19z and across the N interior by 21z.

Cigs over the interior will gradually lower to bkn-ovc025-050 by
00z as the rain moistens the lower air mass.

The trailing upper level low will approach the coast tonight then
move inland 18z-00z on Monday. This will keep the air mass moist
with scattered showers and MVFR or low endVFR conditions.

Ksea... Light rain will spread over the terminal by 19z as a weak
upper level trough moves across the area today. CIGS will lower to
bkn-ovc025-050. Surface winds will remain southerly 5-12 kt. Kam

Marine A weak surface trough will move NE across W wa today.

Pressure gradients across the area will remain weak, allowing
winds to remain below small craft advisory levels. The associated
upper level trough will bring areas of light rain.

An offshore 1003 mb surface low will approach the region from the
w tonight then slow and weaken as it nears the N oregon coast
Monday morning and then moves inland. A weak surface ridge
following the low will increase the onshore flow Monday evening
with SCA W winds expected in the central and E strait of juan de
fuca.

An occluded front will approach the coast Tuesday before moving
inland Tuesday evening. Stronger onshore flow is possible behind
the front with some potential for westerly gales in the strait
later Wednesday. Kam

Sew watches/warnings/advisories
Wa... None.

Pz... None.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PTAW1 - 9444090 - Port Angeles, WA 29 mi70 min 4.1 G 6 50°F 51°F1010.4 hPa
NEAW1 - 9443090 - Neah Bay, WA 36 mi46 min 52°F
LAPW1 - 9442396 - La Push, WA 39 mi70 min E 6 G 9.9 48°F 51°F1009.2 hPa
TTIW1 - Tatoosh Island, WA 43 mi46 min 48°F 1009.3 hPa (-1.1)
DESW1 - Destruction Island, WA 43 mi46 min SE 24 G 27 49°F 1009.1 hPa (-1.0)
46088 - New Dungeness, WA (Hein Bank) 45 mi56 min ESE 7.8 G 12 50°F 49°F1009.8 hPa (-1.3)47°F
46087 - Neah Bay, WA (Traffic Separation Lighted Buoy) 46 mi56 min ESE 9.7 G 14 49°F 52°F8 ft1009.2 hPa (-1.2)45°F

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 mi53 minE 510.00 miOvercast50°F46°F86%1010.2 hPa

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Last 24hr4N7CalmS3NW65N4CalmCalmCalmSW4SW4W5CalmSW4SW4CalmCalmCalmE3E6E7E6E5
1 day agoE8NE7E8E8E7E6E3CalmCalmSW3CalmCalmCalmW3SW4SW6W5CalmE3W6W4W8W10W7
2 days ago4E4N4N3N3W3NW3W3W4W4W4SW5W5SW6W6SW6SW6W5SW5SW4E8E65E8

Tide / Current Tables for Twin Rivers, Strait of Juan de Fuca, Washington
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Twin Rivers
Click for Map
Sun -- 05:06 AM PDT     Moonrise
Sun -- 06:10 AM PDT     Sunrise
Sun -- 06:11 AM PDT     1.06 feet Low Tide
Sun -- 12:02 PM PDT     6.16 feet High Tide
Sun -- 04:58 PM PDT     Moonset
Sun -- 06:28 PM PDT     0.43 feet Low Tide
Sun -- 08:18 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
6.365.142.81.71.11.42.53.74.85.86.25.953.82.51.40.50.61.634.45.7

Tide / Current Tables for Juan De Fuca Strait (East), British Columbia Current
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Juan De Fuca Strait (East)
Click for Map
Sun -- 01:06 AM PDT     1.32 knots Max Flood
Sun -- 03:44 AM PDT     -0.00 knots Slack
Sun -- 05:04 AM PDT     Moonrise
Sun -- 06:08 AM PDT     Sunrise
Sun -- 07:21 AM PDT     -2.17 knots Max Ebb
Sun -- 12:10 PM PDT     0.00 knots Slack
Sun -- 01:49 PM PDT     0.43 knots Max Flood
Sun -- 03:32 PM PDT     -0.00 knots Slack
Sun -- 04:56 PM PDT     Moonset
Sun -- 07:46 PM PDT     -2.16 knots Max Ebb
Sun -- 08:16 PM PDT     Sunset
Sun -- 11:22 PM PDT     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
11.31.10.6-0.2-1-1.8-2.1-2.1-1.7-1.2-0.6-0.10.30.40.2-0.2-0.8-1.5-2-2.1-1.8-1.2-0.3

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 (15,3,4,5)
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Ground Weather Radar Station Seattle/Tacoma, WA
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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.