Thursday, March30, 2017 L-36.com


Marine Weather and Tides
Mirrormont, 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 6:46AMSunset 7:38PM Thursday March 30, 2017 9:36 AM PDT (16:36 UTC) Moonrise 7:39AMMoonset 10:03PM Illumination 11% Phase: Waxing Crescent; Moon at 3 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- 820 Am Pdt Thu Mar 30 2017
Today..SW wind 5 to 15 kt in the south part. NW wind 5 to 15 kt in the north part. Wind waves 1 or 2 ft. Chance of showers.
Tonight..N wind 5 to 15 kt becoming S wind to 10 kt late. Wind waves 1 or 2 ft.
Fri..S wind to 10 kt rising to 5 to 15 kt in the afternoon. Wind waves 1 or 2 ft. Patchy fog in the morning.
Fri night..SW wind to 10 kt becoming S 10 to 20 kt after midnight. Wind waves 1 ft or less building to 1 to 3 ft after midnight.
Sat..S wind 5 to 15 kt. Wind waves 1 or 2 ft.
Sat night..NW wind to 10 kt becoming N after midnight. Wind waves 1 ft or less.
Sun..NE wind to 10 kt becoming nw. Wind waves 1 ft or less.
Mon..Light wind becoming sw to 10 kt. Wind waves less than 1 ft becoming 1 ft or less.
PZZ100 820 Am Pdt Thu Mar 30 2017
Synopsis for the northern and central washington coastal and inland waters..Onshore flow will become light on Friday as high pressure builds over the region. A weakening front will reach the coast around daybreak Saturday.

7 Day Forecast for Marine Location Near Mirrormont, WA
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location: 47.47, -122     debug


Area Discussion for - Seattle, WA
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Fxus66 ksew 300950
afdsew
area forecast discussion
national weather service seattle wa
245 am pdt Thu mar 30 2017

Synopsis An upper level trough over the region will shift
eastward tonight as a ridge of high pressures builds into the area.

Showers will diminish and drier conditions will prevail tonight
through Friday. A weak front will bring some light rain on Saturday
with a lingering trough providing a chance of showers on Sunday.

Somewhat drier conditions Monday could be followed by more rain
with another front by the middle of next week.

Short term Shower activity continues to move onshore with
an upper level trough over the area this morning. Convergence zone
activity continues over northern king and snohomish counties, but
onshore gradients are easing and this should wind down by later this
morning. The trough axis will be east of the cascades by late
morning and showers will diminish through the afternoon. Low level
moisture will be slow to exit so expect a rather cloudy day ahead
with high temperatures 2 to 4 degrees below normal. By late tonight,
an upper level ridge axis will be pushing into the offshore waters.

This is a rather low amplitude, dirty ridge. Friday will be a dry
day for western washington albeit with a fair amount of high and mid
level clouds. With some partial sunshine temperatures will at least
be close to normal. Like a cruel april fools joke, another system
arrives Friday night into Saturday for a damp beginning to the
weekend. QPF is not especially high with this system, but a little
light rain looks likely. The front exits by late in the day leaving
zonal flow in its wake.

Long term Much of western washington could get away with a dry
day on Sunday, but the presence of a trough overhead is enough to
keep a chance of showers in the forecast. Both the GFS and euro
bring more ridging to the area Monday into Tuesday. Current
forecasts have chance pops for that period, but those could be
trimmed back or eliminated if the models continue with that trend.

A return of more wet and unsettled conditions is possible by the
middle of next week as the models show a broad upper level trough
digging into our offshore waters with a series of systems moving
through. 27

Aviation Northwesterly flow aloft today on the backside of a
passing upper level trough becoming northerly Thursday. Gradients
loosening very gradually this early morning and will continue that
slow pace through the day... Allowing for continued offshore flow but
with wind speeds slowly declining. Some locations may still
experience breezy conditions throughout the day today. The air mass
remains moist and slightly unstable and as such... Showers will
persist into the remainder of the morning hours. As upper level high
pressure starts to make its way toward the area... Conditions are
expected to stabilize late this afternoon and into this evening
allowing for diminishing shower activity.

Cigs remain a mix ofVFR to MVFR conditions over W wa. Earlier
convergence zone over pae has dissipated although sufficient low
level moisture remains in place there to keep CIGS in MVFR range.

Elsewhere... MVFR CIGS generally expected under shower activity. As
shower activity is expected to taper off this afternoon... Should
also see CIGS bounce back up into solidVFR range. Lingering low
level moisture may result in CIGS deteriorating tonight... Most
locations likely dipping back down into MVFR... Although fog-prone
locations... Such as olm... May see fog develop late tonight. Smr
ksea... Current obs and radar show not much in the way of showers
over the terminal at this time and likely to stay that way for the
next hour or two. Developing band of showers to the NW however seems
to be on track to potentially brush the terminal... So vcsh still
looks good. CIGS likely to remain MVFR for much of the morning
before rebounding toVFR by afternoon. CIGS may drop again into MVFR
tonight. SW winds 7-12 kts this morning tapering off to 5-10 kts
this afternoon and tonight. Smr

Marine Moderating onshore flow in wake of exiting trough.

Inherited headlines look good but did have to extend scas for the
strait... N inland waters and admiralty inlet into at least late
tonight as onshore flow remains in place. Gradients will continue to
gradually slacken through the day allowing for a very slow
diminishing of winds over area waters... With most locations falling
out of SCA criteria at some point this afternoon or tonight. Lighter
winds are expected Friday as upper level ridging sets up over the
pacific nw. Another frontal system is expected for Saturday. Smr

Hydrology After the recent heavy rain over the olympics the
skokomish river remains a little above flood stage. It will continue
to recede slowly this morning. Latest estimate is that it will drop
below flood stage around 9 am. No other really strong and wet systems
are expected for the next week so flooding is not expected on area
rivers during the next 7 days.

The heavy rain did increase the threat of landslides across W wa
again. However, the light showers expected today will not have much
effect on soil saturation. The current statement highlighting the
landslide potential will be allowed to expire. Kam/27

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

Pz... Small craft advisory until 5 pm pdt this afternoon 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 am pdt this morning
for grays harbor bar.

Small craft advisory until 5 am pdt Friday 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.

Small craft advisory until 11 pm pdt this evening for west
entrance u.S. Waters strait of juan de fuca.

Small craft advisory until 5 am pdt early this morning for
puget sound and hood canal.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
TCNW1 - 9446484 - Tacoma, WA 26 mi54 min 44°F 46°F1021.1 hPa
TCMW1 - 9446482 - Tacoma Met, WA 26 mi48 min SW 5.1 G 7
WPOW1 - West Point, WA 27 mi36 min S 11 G 12 44°F 1020.7 hPa (+2.3)42°F
46121 41 mi40 min 43°F 1020.7 hPa39°F

Wind History for Seattle, Puget Sound, WA, WA
(wind in knots)    EDIT      (on/off)   Help
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S10
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G32
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S10
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SE3
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G14

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Renton, Renton Municipal Airport, WA12 mi43 minESE 310.00 miOvercast45°F42°F90%1021.1 hPa
Seattle, Seattle Boeing Field, WA16 mi43 minSW 510.00 miOvercast46°F42°F86%1020.8 hPa
Seattle, Seattle-Tacoma International Airport, WA17 mi43 minS 810.00 miOvercast44°F39°F85%1021.5 hPa

Wind History from RNT (wind in knots)
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Last 24hrSE4SE8S12
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S5S9S7S9S4S3S4SW3NE3E4SE4SE4E3
1 day agoS8S8
G17
SE9SE6SE6S9
G17
SE9S8S6S10S10SE6E3SE3CalmCalmE3SE3S3E4CalmS4SE5S6
2 days agoS9S9
G15
S10
G17
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G17
S11S8S6S5S6S8S11
G16
S9S7SE7E3SE4SE5E4SE4SE5SE4SE4SE5

Tide / Current Tables for Duwamish Waterway, Washington
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Duwamish Waterway
Click for Map
Thu -- 01:10 AM PDT     2.69 feet Low Tide
Thu -- 06:51 AM PDT     Sunrise
Thu -- 06:54 AM PDT     11.51 feet High Tide
Thu -- 08:40 AM PDT     Moonrise
Thu -- 01:41 PM PDT     -0.25 feet Low Tide
Thu -- 07:37 PM PDT     Sunset
Thu -- 08:01 PM PDT     10.94 feet High Tide
Thu -- 11:04 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.52.73.24.879.31111.510.89.16.74.11.70.1-0.213.368.510.310.910.59.27.4

Tide / Current Tables for Restoration Point, 0.6 miles ESE of, Washington Current
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Restoration Point
Click for Map
Thu -- 02:03 AM PDT     0.00 knots Slack
Thu -- 04:00 AM PDT     0.58 knots Max Flood
Thu -- 06:51 AM PDT     Sunrise
Thu -- 07:09 AM PDT     -0.00 knots Slack
Thu -- 08:41 AM PDT     Moonrise
Thu -- 10:46 AM PDT     -1.10 knots Max Ebb
Thu -- 02:26 PM PDT     0.00 knots Slack
Thu -- 04:42 PM PDT     0.79 knots Max Flood
Thu -- 07:37 PM PDT     Sunset
Thu -- 08:22 PM PDT     -0.00 knots Slack
Thu -- 11:04 PM PDT     Moonset
Thu -- 11:26 PM PDT     -0.81 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.7-0.4-00.40.60.50.30-0.4-0.8-1-1.1-0.9-0.6-0.20.30.70.80.70.40.1-0.3-0.6-0.8

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 (12,3,4,5)
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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.