Monday, October21, 2019 L-36.com


Marine Weather and Tides
Vashon, WA

Version 3.4
NOTICE
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.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 7:35AMSunset 6:12PM Monday October 21, 2019 1:30 AM PDT (08:30 UTC) Moonrise 11:21PMMoonset 2:13PM Illumination 48% Phase: Third Quarter Moon; Moon at 22 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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PZZ135 Puget Sound And Hood Canal- 840 Pm Pdt Sun Oct 20 2019
.small craft advisory in effect until 11 pm pdt this evening...
.small craft advisory in effect from Monday morning through Monday evening...
Tonight..SW wind 15 to 25 kt becoming S 5 to 15 kt after midnight. Wind waves 2 to 4 ft subsiding to 2 ft or less after midnight. A chance of showers in the evening then a slight chance of rain after midnight.
Mon..S wind 5 to 15 kt rising to 15 to 25 kt in the afternoon. Wind waves 2 ft or less building to 2 to 4 ft in the afternoon. Rain in the morning then showers in the afternoon.
Mon night..S wind 15 to 25 kt. Wind waves 2 to 4 ft. Showers.
Tue..SW wind 10 to 20 kt becoming N in the afternoon. Wind waves 1 to 3 ft.
Tue night..N wind 5 to 15 kt. Wind waves 2 ft or less.
Wed..N wind to 10 kt becoming 5 to 15 kt in the afternoon. Wind waves 2 ft or less.
Wed night..N wind 5 to 15 kt in the evening becoming light. Wind waves 2 ft or less.
Thu..Light wind becoming N to 10 kt. Wind waves less than 1 ft becoming 1 ft or less.
Fri..Variable wind 5 to 15 kt. Wind waves 2 ft or less.
PZZ100 840 Pm Pdt Sun Oct 20 2019
Synopsis for the northern and central washington coastal and inland waters..The next in a series of frontal systems will move through the area Monday. Onshore flow on Tuesday will diminish by Wednesday as high pressure builds over the region.


7 Day Forecast for Marine Location Near Vashon, WA
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location: 47.4, -122.46     debug


Area Discussion for - Seattle, WA
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Fxus66 ksew 210330
afdsew
area forecast discussion
national weather service seattle wa
830 pm pdt Sun oct 20 2019

Update this evening A convergence zone has formed over king
county this evening and is currently dropping south from the
seattle metro over to snoqualmie pass. Wind shift and heavy
downpours likely in this band which will likely persist for the
next hour or two. Have updated forecast this evening to account
for this and hi-res guidance. Elsewhere, a few showers will linger
tonight ahead of incoming system. No changes made to the forecast
past this evening, although have issued a hydrologic outlook
(product esfsew) to highlight possibility of heavy rain and rising
rivers Monday into Tuesday. Updated aviation and marine
discussions below. Ceo

Synopsis A passing weather system will keep showers in the
forecast through tonight. A wetter, warm-frontal system will move
through the area on Monday, bringing another round of heavier rain
to the region. Showers will taper on Tuesday as an upper level
ridge moves over the region. Drier weather is expected Wednesday
and Thursday before the next upper level trough approaches on
Friday and brings another round of precipitation to the region.

Dry weather will return next weekend.

Short term tonight through Wednesday An upper level short
wave passing through the region will continue to bring light
showers to western washington into the evening hours. Overall,
shower coverage will start to taper this evening, however a few
high-res models continue to indicate the possibility of a weak
convergence zone developing along the king snohomish county line
between 01-04z. Current observations have indicated that snow
levels have started to increase this afternoon. Higher elevations
in the mountains will continue to pick up light snow as showers
move over the region, but nothing significant and nothing that
warrants any headlines. Current temperatures across the region are
primarily in the upper 40s to mid 50s.

A wetter, warm-frontal system will approach the region on Monday,
brining rising snow levels and rain to much of the area, but
especially to some of the higher elevations. With westerly flow
aloft, the central portion of puget sound will likely be rain
shadowed at times, however a some spots across western washington
could see a good amount of rain with this next system. There is
the potential for river flooding, mainly in the mountainous
terrain (particularly the olympics and central cascades). Rivers
could rise sharply and will continue to be monitored. Highs will
warm a few degrees and top out at the mid to upper 50s.

Showers will start to taper Tuesday and will mainly be confined
to the mountains by late afternoon as an upper level ridge starts
to build into the region from the west. This will give western
washington a break from the series of systems impacting the region
over the last week. Drier weather will be in store for the region
on Wednesday. Highs will continue to warm and will top out in the
upper 50s to low 60s each day.

Long term Thursday through Sunday Dry weather will be in
store for western washington Thursday as a upper level ridge
continues to persist over the area. The next chances of rain will
come from an upper trough dropping down from the northwest on
Friday. A high amplitude upper ridge will then build over the
northeastern pacific Saturday and keep conditions dry through the
remainder of the weekend. 14

Aviation Scattered showers across the area this evening with
exception of a convergence zone which is dropping south through
king county. Conditions are in theVFR to MVFR range currently.

Some additional improvement possible this evening but some areas
will see ceilings struggle to improve and will drop back down
overnight ahead of next system. Have kept trend of ifr- MVFR
through the overnight hours. Another system will bring another
round of rain to the area Monday morning and then through much of
the day. Therefore, expect sub-vfr CIGS to hang around with
periodic vsby reductions. Winds generally from the south 10-15kts
with gusts near 20kts possible at times. Winds will have more of a
westerly component at hqm and clm.

Ksea... Convergence zone nearing the terminal as of 0330 z with
wind shift and heavy downpours possible over the next hour or two.

Could see brief improvement after that but think MVFR will be the
dominate category through the overnight hours. More rain on
Monday will limit vsbys at times and keep ceilings in the ifr-
MVFR range. Winds out of the south 10-15kts with a few gusts near
20kts in the vicinity of the terminal.

Kovacik ceo

Marine Breezy conditions over most waters will continue through
the evening hours before briefly subsiding overnight. Have kept
small craft advisory for wind for the interior waters through 06z
tonight, with winds across the coastal waters currently relaxing
a bit. Rough bar conditions near grays harbor will likely continue
to improve this evening into tonight.

The next in a series of weather systems is set to move into the
region early Monday, with yet another round of breezy winds
expected. The next set of small craft advisory headlines has been
issued for this system, with winds of at least 21kts expected
across the coastal waters and all interior waters expect the
central and western strait of juan de fuca. Will also need to
monitor the potential for another round of rough bar conditions
late Monday morning and afternoon.

Kovacik ceo

Hydrology A warmer and wetter weather system will cross the
area Monday and Monday night. Two to three inches of rain is
likely for the coast and mountains with local amounts up to four
inches for the Monday and Monday night timeframe. There is the
potential for river flooding, mainly in the mountainous terrain
(particularly the olympics and central cascades). Rivers could see
sharp rises and will continue to be monitored. Hydrologic outlook
has been issued for mason, king, and snohomish counties.

Sew watches warnings advisories
Wa... None.

Pz... Small craft advisory from 8 am Monday to 5 am pdt Tuesday 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.

Small craft advisory for rough bar until 11 pm pdt this evening
for grays harbor bar.

Small craft advisory until 11 pm pdt this evening for admiralty
inlet-central u.S. Waters strait of juan de fuca-east
entrance u.S. Waters strait of juan de fuca-northern inland
waters including the san juan islands-puget sound and hood
canal.

Small craft advisory from 11 am to 8 pm pdt Monday for admiralty
inlet-east entrance u.S. Waters strait of juan de fuca-
puget sound and hood canal.

Small craft advisory from 11 am to 11 pm pdt Monday for northern
inland waters including the san juan islands.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
TCMW1 - 9446482 - Tacoma Met, WA 9 mi48 min S 8 G 13
TCNW1 - 9446484 - Tacoma, WA 10 mi48 min 54°F 55°F1020.4 hPa
46121 17 mi34 min 54°F 1020.1 hPa49°F
WPOW1 - West Point, WA 18 mi30 min S 12 G 14 53°F 1019.4 hPa (+1.6)50°F
46120 25 mi34 min 53°F 1018.4 hPa49°F
46125 36 mi32 min 3.9 51°F 1018.5 hPa49°F

Wind History for Tacoma MET, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Seattle, Seattle-Tacoma International Airport, WA8 mi37 minSSW 1110.00 miOvercast53°F46°F77%1020.3 hPa
Tacoma, Tacoma Narrows Airport, WA11 mi37 minSSW 11 G 1610.00 miA Few Clouds51°F46°F86%1020.1 hPa
Boeing Field - King County International Airport, WA12 mi37 minS 410.00 miOvercast54°F46°F77%1019.7 hPa
Renton Municipal Airport, WA14 mi37 minSSE 47.00 miOvercast53°F46°F77%1020.3 hPa
Tacoma / McChord Air Force Base, WA17 mi92 minSSW 1010.00 miOvercast53°F50°F91%1020.1 hPa
Bremerton, Bremerton National Airport, WA17 mi34 minSW 98.00 miA Few Clouds50°F48°F96%1021.4 hPa
Fort Lewis / Gray U. S. Army Airfield, WA22 mi92 minSSE 610.00 miOvercast52°F52°F99%1020.1 hPa
Pierce County-Thun Field, WA22 mi55 minSSW 510.00 miOvercast52°F46°F82%1020.3 hPa

Link to 5 minute data for KSEA

Wind History from SEA (wind in knots)
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Last 24hrS9S10S10S13S6SE5S6SE9S8S7SE8SE9E8E9SE7SE5S12
G20
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1 day agoE9E8SE7SE10SE7CalmS3S4SE7SE6S4S5E5E5SE5W4SW5SW5SW10S10S9S8S8S10
2 days agoS13S9
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S11S12S15S12S10S12S9S7S7SE11SE9NW5SW4S7SE7S8SE9SE9

Tide / Current Tables for Burton, Quartermaster Hbr. (inside), Vashon I., Puget Sound, Washington
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for Skagit Bay, 1 mile S of Goat Island, Washington Current
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Skagit Bay
Click for Map
Mon -- 01:18 AM PDT     0.00 knots Slack
Mon -- 05:09 AM PDT     1.53 knots Max Flood
Mon -- 05:41 AM PDT     Last Quarter
Mon -- 07:37 AM PDT     Sunrise
Mon -- 09:18 AM PDT     -0.01 knots Slack
Mon -- 12:10 PM PDT     -1.08 knots Max Ebb
Mon -- 03:13 PM PDT     Moonset
Mon -- 04:06 PM PDT     0.01 knots Slack
Mon -- 05:47 PM PDT     0.76 knots Max Flood
Mon -- 06:11 PM PDT     Sunset
Mon -- 08:09 PM PDT     -0.02 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-1-0.50.71.11.41.51.51.20.90.3-0.6-1-1.1-1-0.8-0.6-0.20.60.80.60.1-0.6-0.8-1

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.
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Wind Forecast for Seattle, WA (4,6,7,8)
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Ground Weather Radar Station Seattle/Tacoma, WA
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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.