Tuesday, March28, 2017 L-36.com


Marine Weather and Tides
Keyport, 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 6:52AMSunset 7:37PM Tuesday March 28, 2017 4:57 AM PDT (11:57 UTC) Moonrise 6:34AMMoonset 7:35PM Illumination 1% Phase: Waxing Crescent; Moon at 1 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- 253 Am Pdt Tue Mar 28 2017
.small craft advisory in effect through late tonight...
Today..S wind 20 to 30 kt. Wind waves 2 to 5 ft. Rain.
Tonight..S wind 15 to 25 kt. Wind waves 2 to 4 ft. Rain.
Wed..S wind 20 to 30 kt. Wind waves 2 to 5 ft. Rain tapering off to showers.
Wed night..SW wind 15 to 25 kt...easing late. Wind waves 1 to 4 ft...subsiding.
Thu..Variable wind 10 kt or less. Wind waves 1 ft or less.
Thu night..NW wind 10 kt or less. Wind waves 1 ft or less.
Fri..Variable wind 10 kt or less. Wind waves 1 ft or less.
Sat..S wind 10 to 20 kt. Wind waves 1 to 3 ft.
PZZ100 253 Am Pdt Tue Mar 28 2017
Synopsis for the northern and central washington coastal and inland waters..The southern end of a frontal system will move across the washington coastal waters during the day today. Expect a warm front to move across the area late tonight...followed by a cold front on Wed. High pres offshore with lower pres inland will result in westerly flow on Thu.

7 Day Forecast for Marine Location Near Keyport, WA
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location: 47.7, -122.63     debug


Area Discussion for - Seattle, WA
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Fxus66 ksew 280429
afdsew
area forecast discussion
national weather service seattle wa
929 pm pdt Mon mar 27 2017

Synopsis Rain will spread inland tonight as a warm front over
the offshore waters moves northeastward. The heaviest
precipitation with this front on Tuesday will be over the olympic
peninsula. A low pressure system will move into northern
vancouver island Wednesday morning with the associated cold front
pushing across western washington. Western washington will see the
heaviest rainfall ahead of this southeastward pushing cold front.

Another trough will give showers to the area on Thursday. Dry
weather is expected on Friday and possibly for parts of the south
interior on Saturday. A weak front will bring a chance of rain
Sunday, with decreasing showers early next week.

Short term Showers have moved into the cascades this evening,
but pacific northwest radars show warm advection rain spreading
onto the olympic peninsula and into the northern interior. This
rain shield is ahead of a warm front that extends from a 1004 mb
low southwest of haida gwaii to the south oregon coastal waters.

The rain will push northeast into the area tonight through Tuesday
as the front pushes slowly northeastward.

A weak wave appears to be forming near 38n 148w this evening.

Short term models take this developing feature east-northeast as a
1006 mb low on the central or northern coast of vancouver island
Wednesday morning. The general model consensus is to have the
heaviest precipitation over the area from Tuesday evening into
midday Wednesday. Most of the models take the main low far enough
to the northwest of the area, limiting the strength of a
developing mesolow to the northeast of the olympics. This results
in windy weather across the area, but not windy enough to require
the issuance of wind advisories or warnings. Another wave will
pass by to the south of the area Wednesday night. This wave may
slow the southeastward progress of the front that moves across the
area on Wednesday, but forecast models argue against this.

Snow levels in the mountains will rise from around 3000 feet
tonight and early Tuesday to near 6000 feet later Tuesday night
into Wednesday in the warm sector. Advisory snow amounts may occur
locally at mt baker, but the passes will change to rain before
significant snowfall accumulations occur and places like paradise
ranger station in mount rainier national park will see warmer
temperatures and lighter precipitation amounts. Will hold off on
issuing any winter weather advisories for the mountains at this
time.

The landslide risk will increase over central and southern
portions of the forecast area starting later Tuesday and will
continue through late Wednesday or Thursday. A special weather
statement for the elevated landslide risk was issued this
afternoon and will be maintained. Flooding with the incoming
rainfall is expected to be limited to the particularly flood-prone
skokomish river in mason county. A flood watch is in effect there.

An upper trough will bring showers to the area Thursday, but
precipitation coverage and intensity will generally be on the
decrease. A puget sound convergence zone may develop, bringing a
somewhat better chance of rain to snohomish and king counties.

Highs will remain cool in the lower 50s.

The current forecast is in good shape; no updates are required.

Albrecht

Long term From the previous long term discussion: models are
in good agreement that Friday will be dry as an upper ridge builds
over the area. The flow will be light and temperatures should
warm up, possibly close to 60. Some rain may reach the coast and
north parts of the area Saturday but much of the area will be in
the warm sector of the next frontal system. Highs could be even
warmer, possibly into the low 60s around puget sound. If sea-tac
does reach 60, it will be the first time this year.

Light rain or showers will eventually reach much of western
washington by Saturday night and Sunday with somewhat cooler high
temperatures. Models have shifted around on the pattern early next
week. Climatology seems the best way to go and have maintained some
chance of showers and near average highs. Mercer

Aviation Zonal or wly flow will prevail across the area overnight.

The low level flow will remain sly. Expect areas of MVFR CIGS and
vsbys to become more wdsprd overnight.

Ksea... MVFR CIGS are expected overnight. There is a chance that cigs
will lift into theVFR category during the day Tuesday. Winds will
remain sly 9-15 kt, possibly occasionally gusty during the day
Tuesday.

Marine A cold front well offshore will continue moving east
and will move across the washington coastal waters late Tuesday.

Another frontal system will impact the area on Wednesday for the
possibility of gale force winds over the strait of juan de fuca.

High pressure offshore with lower pressure inland will result in
onshore flow on Thursday.

Hydrology A warm frontal system will bring 1 to 3 inches to
the cascades and 2 to 4 inches to the olympics Tuesday morning
through early Wednesday morning. While precipitation amounts will
only be moderate, currently saturated soils will cause increased
runoff. Most rivers will see rises, and a few could approach
bankfull on Wednesday.

Precipitation amounts looks sufficient enough to cause minor
flooding on the skokomish river in mason county. A flood watch was
issued for this threat from late Tuesday night through Thursday
morning. The most likely scenario is for minor flooding to develop
on the skokomish river Wednesday morning and continue through
Wednesday night. See the latest flood watch for details.

The additional rainfall will also cause a further elevated risk of
landslides late Tuesday through Wednesday. Soils remain saturated
with the risk already elevated, but rainfall Tuesday into Wednesday
will increase the risk further. Up to 1 inch of rain could fall over
the interior lowlands from Tuesday morning through Wednesday
morning, with most areas somewhat less. Heaviest amounts over 1
inch will occur on the coast and over the mountains. Mercer

Climate The rain today at sea-tac makes 45 days
with measurable rain since february 1st. Only two years in over 120
years of weather records in seattle have had more rain days in
february and march, 1961 with 49 days and 2007 with 46 days.

Through 3 pm today the combined february and march precipitation
total for seattle is 15.36 inches. This is the second highest total
on record. The record is 15.55 inches set in 2014.

There has been measurable precipitation on 23 out of the 27 days
at sea-tac this month. The record for the most days with
measurable precipitation in march in seattle is 27 days in 1989.

There has been measurable rain every day so far this month at
quillayute. The current rain day streak including this morning is
35 days in a row. The record is 47 days in 1990. Felton/mercer

Sew watches/warnings/advisories
Wa... Flood watch from late Tuesday night through Thursday afternoon
for mason county.

Pz... Small craft advisory until 6 pm 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-puget sound and hood canal-west
entrance u.S. Waters strait of juan de fuca-admiralty inlet-
northern inland waters including the san juan islands.

Small craft advisory for rough bar until 9 pm pdt Tuesday for
grays harbor bar.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
WPOW1 - West Point, WA 11 mi58 min S 24 G 27 47°F 1022.7 hPa (-1.6)42°F
EBSW1 - 9447130 - Seattle, WA 17 mi40 min SE 5.1 G 7 46°F 47°F1023.4 hPa
46121 29 mi41 min 9.7 46°F 1023 hPa42°F
PTWW1 - 9444900 - Port Townsend, WA 29 mi46 min ESE 19 G 25 47°F 47°F1021.4 hPa
TCMW1 - 9446482 - Tacoma Met, WA 31 mi40 min SSE 4.1 G 8
TCNW1 - 9446484 - Tacoma, WA 32 mi46 min 46°F 46°F1023.8 hPa
SISW1 - Smith Island, WA 44 mi58 min ENE 27 G 30 46°F 1020 hPa (-2.2)

Wind History for Seattle, Puget Sound, WA, WA
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Bremerton, Bremerton National Airport, WA17 mi63 minS 12 G 1710.00 miOvercast43°F42°F100%1023.7 hPa
Seattle, Seattle Boeing Field, WA21 mi65 minSSE 1010.00 miOvercast46°F44°F93%1023.5 hPa
Everett Snohomish County, WA24 mi65 minSE 14 G 2310.00 miOvercast44°F41°F89%1022.8 hPa

Wind History from PWT (wind in knots)
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1 day agoCalmCalmCalmCalmCalmS4CalmNW4W4W4W4CalmCalmW4SW3CalmSW6S9S10S7S7S11S7S6
2 days agoS10S11S8S5S9S12
G17
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SW9S5SE4CalmS3CalmCalmCalmCalmCalmCalm

Tide / Current Tables for Poulsbo, Liberty Bay, Washington
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Poulsbo
Click for Map
Tue -- 05:54 AM PDT     12.25 feet High Tide
Tue -- 06:56 AM PDT     Sunrise
Tue -- 07:34 AM PDT     Moonrise
Tue -- 12:08 PM PDT     1.52 feet Low Tide
Tue -- 06:17 PM PDT     11.45 feet High Tide
Tue -- 07:35 PM PDT     Sunset
Tue -- 08:34 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.62.857.610.111.712.211.59.77.34.62.51.523.76.18.510.511.411.29.87.85.43.2

Tide / Current Tables for West Point, Seattle, 0.3 miles W of, Washington Current
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West Point
Click for Map
Tue -- 02:37 AM PDT     0.89 knots Max Flood
Tue -- 05:48 AM PDT     -0.00 knots Slack
Tue -- 06:56 AM PDT     Sunrise
Tue -- 07:34 AM PDT     Moonrise
Tue -- 08:48 AM PDT     -1.00 knots Max Ebb
Tue -- 12:20 PM PDT     0.00 knots Slack
Tue -- 03:05 PM PDT     0.91 knots Max Flood
Tue -- 06:19 PM PDT     -0.00 knots Slack
Tue -- 07:35 PM PDT     Sunset
Tue -- 08:34 PM PDT     Moonset
Tue -- 09:09 PM PDT     -0.91 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.10.50.80.90.70.4-0.1-0.6-0.9-1-0.9-0.5-0.10.30.70.90.80.60.1-0.3-0.7-0.9-0.8-0.6

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 (7,2,3,4)
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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.