Saturday, September21, 2019 L-36.com


Marine Weather and Tides
Redmond, WA

Version 3.4
NOTICE
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 6:51AMSunset 7:12PM Friday September 20, 2019 10:08 PM PDT (05:08 UTC) Moonrise 9:39PMMoonset 12:27PM Illumination 55% 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- 853 Pm Pdt Fri Sep 20 2019
Tonight..NW wind to 10 kt. Wind waves 1 ft or less. Patchy fog after midnight.
Sat..S wind to 10 kt. Wind waves 1 ft or less. Patchy fog in the morning.
Sat night..NW wind to 10 kt becoming S after midnight. Wind waves 1 ft or less. A slight chance of rain in the evening then a chance of rain after midnight.
Sun..S wind to 10 kt. Wind waves 1 ft or less.
Sun night..N wind 5 to 15 kt becoming S after midnight. Wind waves 2 ft or less.
Mon..S wind 5 to 15 kt. Wind waves 2 ft or less.
Mon night..SW wind to 10 kt becoming S 5 to 15 kt after midnight. Wind waves 2 ft or less.
Tue..Variable wind 5 to 15 kt becoming n. Wind waves 2 ft or less.
Wed..Light wind becoming nw to 10 kt. Wind waves 1 ft or less.
PZZ100 853 Pm Pdt Fri Sep 20 2019
Synopsis for the northern and central washington coastal and inland waters..Light onshore flow will continue with weak high pressure over the area. A frontal system will approach the area Saturday, then move inland Sunday. Another weak frontal system will move through the area around Monday night.


7 Day Forecast for Marine Location Near Redmond, WA
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location: 47.68, -122.1     debug


Area Discussion for - Seattle, WA
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Fxus66 ksew 210353
afdsew
area forecast discussion
national weather service seattle wa
853 pm pdt Fri sep 20 2019

Update The forecast is largely on track this evening with no
major changes planned. Satellite data continues to show a ridge of
high pressure in the mid and upper levels of atmosphere
progressing through the region this evening, while sfc analysis of
the lower levels shows high pressure offshore and lower pressure
inland. Should be an overall tranquil evening for western
washington as mid and high clouds continue to stream in atop the
ridge. These clouds should gradually lessen in coverage through
the morning hours Saturday. However, overnight, given onshore flow
marine stratus will move inland and likely encompass most lowland
locations by daybreak. Some areas of fog could materialize as
well. These clouds will gradually retreat back towards the coast
thru the morning hours into the afternoon, allowing for some sun
breaks. This will be short lived as the next frontal system will
begin moving into the area tomorrow evening.

Have included the previous discussion below with an updated marine
and aviation section.

Kovacik

Prev discussion issued 327 pm pdt Fri sep 20 2019

Synopsis High pressure will give mostly dry but cloudy
conditions through Saturday. A cold front will spread rain to the
area on Sunday. Wet and showery weather will continue through
early next week with temperatures trending below normal.

Short term tonight through Monday An upper level ridge is
nudging into the pac NW with northerly flow aloft over western
wa. A weak disturbance in the flow is generating isolated showers
in the area but accumulations are light.

The upper level ridge will bring mostly dry weather on Saturday.

The ridge will be dirty, though, with increasing clouds through
the day. The next incoming cold front, now slower in the models,
will spread rain inland late Saturday night into Sunday. We should
see widespread wetting rains with this front, similar to the
system this past Tuesday. Thunderstorms will be possible but the
best dynamics and instability will be mostly south over oregon.

Onshore flow will increase Sunday afternoon evening with a
possible puget sound convergence zone developing in the central
sound.

We're in westerly zonal flow on Monday with a jet over the region,
with ongoing low level onshore flow. A system passing through
southern b.C. May clip western wa for a chance of showers.

Temperatures through the period will remain cooler than normal. 33

Long term Tuesday through Friday Onshore flow will continue
on Tuesday for cloudy and cool conditions. Models are still
generating showers over the area, mostly along the coast and in
the mountains. We may see a brief break in the weather on
Wednesday before more wet and unsettled weather on Thursday. The
air mass will remain cool through the end of the week with a deep
upper level trough over the region. Temperatures are trending
around 10 degrees below climo with highs near 60 and lows dipping
into the 40s. 33

Aviation Around 830 pm pdt, most TAF sites wereVFR with some
mid and high clouds streaming through from north to south. The
main exception to these conditions is hqm where marine stratus
deck appears to have settled in for the night. Expect this marine
layer to push inland thru the night with all terminals at least
lower end MVFR if not ifr by daybreak. Some fog likely to
accompany some sites, particularly olm. Stratus should gradually
retreat back to the coast thru the afternoon with an improvement
toVFR expected.

The next frontal system will approach the area late Saturday,
bringing the next chance for rain and low ceilings.

Ksea...VFR ceilings this evening will give way to an MVFR-ifr
stratus deck overnight. These low ceilings will linger thru the
morning hours before conditions improve back toVFR. Winds
expected to remain on the south side under 10kts.

Kovacik

Marine Onshore flow overnight will yield another round of
stratus clouds through Saturday morning with some areas of patchy
fog. The next frontal system is still expected to approach the
area late Saturday night and through Sunday morning, carrying with
it the next chance for rain. This forecast update follows closely
with the previous forecast with small craft advisory level
southerly winds over the coastal waters ahead and with the front
and small craft westerlies behind the front in portions of the
strait of juan de fuca. Another frontal system will move through
the area around Monday night with surface high pressure building
behind the front for Tuesday and Wednesday.

Kovacik felton

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

Sew watches warnings advisories
Wa... None.

Pz... None.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46120 17 mi48 min NNW 1.9 58°F 1019 hPa56°F
WPOW1 - West Point, WA 18 mi69 min N 1 G 1.9 58°F 1020 hPa (-0.0)56°F
46125 32 mi48 min 1.9 57°F 1019.2 hPa54°F
TCMW1 - 9446482 - Tacoma Met, WA 33 mi75 min NW 1 G 1.9
TCNW1 - 9446484 - Tacoma, WA 33 mi75 min 62°F 56°F1020.2 hPa
46121 43 mi43 min 62°F 1019.9 hPa57°F
PTWW1 - 9444900 - Port Townsend, WA 46 mi75 min S 1.9 G 2.9 56°F 53°F1020.6 hPa

Wind History for Seattle, Puget Sound, WA, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Renton Municipal Airport, WA14 mi16 minS 310.00 miFair60°F55°F84%1020.5 hPa
Boeing Field - King County International Airport, WA15 mi16 minSE 310.00 miFair60°F54°F80%1020.1 hPa
Everett Snohomish County, WA19 mi16 minESE 310.00 miFair60°F53°F78%1020.5 hPa
Seattle, Seattle-Tacoma International Airport, WA20 mi16 minESE 610.00 miPartly Cloudy63°F54°F73%1020.8 hPa

Link to 5 minute data for KRNT

Wind History from RNT (wind in knots)
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Last 24hrCalmS5S3SE3S4SE3S4SE3S3CalmCalm3S3Calm3CalmCalmNW4N3CalmCalmCalmS3S3
1 day agoCalmCalmS3CalmSE3CalmS3S4S3S4Calm--3Calm5N4N3CalmNW3W3CalmW3CalmW3
2 days agoS3CalmCalmCalmCalmSE3CalmCalmCalmCalmCalmNW4NW6N5N4N4N8N10N8NW9N8N6N3Calm

Tide / Current Tables for Seattle, Washington
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Seattle
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Sat -- 04:21 AM PDT     0.82 feet Low Tide
Sat -- 06:54 AM PDT     Sunrise
Sat -- 11:37 AM PDT     9.58 feet High Tide
Sat -- 02:33 PM PDT     Moonset
Sat -- 04:50 PM PDT     6.69 feet Low Tide
Sat -- 07:09 PM PDT     Sunset
Sat -- 07:43 PM PDT     Last Quarter
Sat -- 09:55 PM PDT     9.44 feet High Tide
Sat -- 11:24 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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6.953.21.70.912.13.75.57.38.79.59.59.18.47.66.96.77.17.88.69.29.49.1

Tide / Current Tables for Alki Point, 0.3 miles W of, Washington Current
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Alki Point
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Sat -- 12:44 AM PDT     -0.52 knots Max Ebb
Sat -- 04:48 AM PDT     0.00 knots Slack
Sat -- 06:54 AM PDT     Sunrise
Sat -- 07:37 AM PDT     0.47 knots Max Flood
Sat -- 11:23 AM PDT     -0.00 knots Slack
Sat -- 02:03 PM PDT     -0.27 knots Max Ebb
Sat -- 02:33 PM PDT     Moonset
Sat -- 05:54 PM PDT     0.00 knots Slack
Sat -- 07:09 PM PDT     Sunset
Sat -- 07:13 PM PDT     0.09 knots Max Flood
Sat -- 07:43 PM PDT     Last Quarter
Sat -- 09:07 PM PDT     -0.00 knots Slack
Sat -- 11:24 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.5-0.5-0.5-0.3-0.10.10.30.40.50.40.20.1-0.1-0.2-0.3-0.2-0.2-0.100.10.10-0.1-0.3

Weather Map
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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 (1,6,7,8)
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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.