Thursday, January17, 2019 L-36.com


Marine Weather and Tides
Ronald, WA

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 7:40AMSunset 4:44PM Thursday January 17, 2019 12:39 AM PST (08:39 UTC) Moonrise 1:36PMMoonset 3:56AM Illumination 86% Phase: Waxing Gibbous; Moon at 11 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- 809 Pm Pst Wed Jan 16 2019
.small craft advisory in effect through late Thursday night...
Tonight..NE wind 15 to 25 kt. Wind waves 2 to 4 ft. A chance of rain in the evening then rain after midnight.
Thu..SE wind 15 to 25 kt. Wind waves 2 to 4 ft. Rain.
Thu night..S wind 20 to 30 kt. Wind waves 3 to 5 ft. Rain.
Fri..S wind 20 to 30 kt easing to 10 to 20 kt in the afternoon. Wind waves 3 to 5 ft subsiding to 1 to 3 ft in the afternoon.
Fri night..SE wind 15 to 25 kt becoming S 20 to 30 kt after midnight. Wind waves 3 to 5 ft.
Sat..S wind 20 to 30 kt becoming sw 15 to 25 kt in the afternoon. Wind waves 3 to 5 ft.
Sat night..SW wind 5 to 15 kt becoming variable after midnight. Wind waves 2 ft or less.
Sun..Light wind becoming nw 5 to 15 kt. Wind waves 2 ft or less.
Mon..Variable wind to 10 kt becoming s. Wind waves 1 ft or less.
PZZ100 809 Pm Pst Wed Jan 16 2019
Synopsis for the northern and central washington coastal and inland waters..A deep low will move northeast through the offshore waters tonight and Thursday, then fill as it moves north Thursday night. A second deep low will follow a similar track farther offshore Friday and Friday night. Gale force winds are forecast for the coast and some inland waters as both lows pass by the area to the west and northwest.


7 Day Forecast for Marine Location Near Ronald, WA
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location: 47.25, -121.08     debug


Area Discussion for - Pendleton, OR
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Fxus66 kpdt 170624
afdpdt
area forecast discussion
national weather service pendleton or
1020 pm pst Wed jan 16 2019

Short term Offshore upper low pushing a warm front through the
region this evening. Snow, rain and freezing rain are spreading
across the forecast area from southwest to northeast. Expect the
mixed precipitation will continue through the evening and
overnight. Low level cold air is fairly well entrenched as
reflected by steady temperatures near 30 degrees at bend, redmond
and madras for the past several hours with freezing rain. Many
locations will not see much of a temperature change overnight. The
upper low will remain centered offshore Thursday with a southwest
flow over the region. Precipitation will likely become more
showery in nature and with warming temperatures will transition to
mostly rain. Upper ridge builds in Friday. A strong warm front
will move through the ridge with rain and mountain snow late in
the day into the overnight period. 94

Aviation 06z tafs. Mixed precipitation for the TAF sites
overnight as front moves across the region. Ykm dls likely to have
snow and freezing rain. Pdt alw psc rdm bdn should be freezing rain
and rain. Temperatures remaining 27-34 degrees overnight. Winds less
than 10kt.

Prev discussion issued 206 pm pst Wed jan 16 2019
short term... Tonight through Friday... A warm front will lift over
the forecast area overnight followed rapidly by a cold frontal
passage Thursday morning and then the remnants of the associated
upper level trough Thursday night. Then the next weather system
arrives as a warm front Friday afternoon. A complex weather pattern
with lots of little details. The warm front will begin to spread
precipitation into central oregon late this afternoon and then
spread northward overnight. There is some cold air trapped beneath
the columbia basin inversion so expect a mixture of precipitation
types overnight which is best discussed in the winter weather
advisories which are in effect. The warm front will move north of
the forecast area early Thursday morning as a cold front quickly
sweeps through the region from the west. This will help break the
inversion and allow the trapped cold air to mix out of the columbia
basin around midday. At that point precipitation will turn to
showers and mainly be just rain or snow. Showers will persist
Thursday night but be on the decrease eventually ending late
overnight or early Friday for most of the forecast area other than
the far eastern mountains. There will not be much of a break as the
next system, a warm front, arrives Friday afternoon and night. Snow
levels will start out around 3000 to 4000 feet but quickly rise to
4000 to 7000 feet.

Long term... Friday night through Wednesday... Deep low pressure will
approach the wa bc coast, moving northeast onshore bc Saturday. The
systems warm front will move slowly from south to north Friday
night, with a cold front crossing the area Saturday night Sunday.

With a sufficiently rich moisture tap, widespread precip can be
expected for most areas this weekend. Snow levels will rise to 4500-
5500 feet north and 6000-7500 feet south by Saturday afternoon. In
the wake of the cold front Sunday, snow levels will fall to 2000-
3500 feet Sunday night. Expect precip totals this weekend to range
from 0.75-1.25 inches for the higher elevations and one-third to two-
thirds of an inch for the lowlands. With snow levels rather high
until late Sunday Sunday night, do not expect significant
accumulations below 5500 feet. For early middle of next week, models
in general agreement, with the region residing along the northern
periphery of an upper level ridge. Periodic disturbance will ride
over the top of the ridge across the interior pacific northwest,
resulting in chance of rain snow showers across the favored upslope
terrain, with lesser pops across the lower elevations. Slightly
above normal temperatures can be expected for the long term.

Preliminary point temps pops
Pdt 29 42 37 50 90 40 30 10
alw 30 43 37 51 90 60 40 20
psc 32 40 36 50 100 80 30 10
ykm 31 37 32 43 100 80 30 20
hri 32 40 36 50 100 50 20 10
eln 30 35 32 40 90 90 40 20
rdm 32 46 33 45 80 30 20 80
lgd 34 43 36 44 90 60 40 40
gcd 36 47 34 44 80 40 30 20
dls 33 40 35 46 100 50 40 60

Pdt watches warnings advisories
Or... Winter weather advisory until 10 am pst Thursday for orz044-507-
508-510.

Winter weather advisory until 4 am pst Thursday for orz511.

Wa... Winter weather advisory until 10 am pst Thursday for waz026>029.

Winter weather advisory until 4 pm pst Thursday for waz520-521.

94


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
TCMW1 - 9446482 - Tacoma Met, WA 71 mi58 min NNW 1.9 G 1.9
TCNW1 - 9446484 - Tacoma, WA 71 mi58 min 45°F 49°F1000.6 hPa

Wind History for Seattle, Puget Sound, WA, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Stampede Pass, WA14 mi1.7 hrsVar 30.75 miLight Snow Fog/Mist27°F24°F89%1006.2 hPa

Wind History from SMP (wind in knots)
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Last 24hr4545645E53566455445434534
1 day ago--4656546--------E645--E64544E4E75
2 days agoNE56NE6NE5NE6NE75E66NE66E75E7655NE7646356

Tide / Current Tables for Des Moines, Washington
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Des Moines
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Thu -- 02:50 AM PST     10.11 feet High Tide
Thu -- 04:02 AM PST     Moonset
Thu -- 07:24 AM PST     7.62 feet Low Tide
Thu -- 07:50 AM PST     Sunrise
Thu -- 12:35 PM PST     11.49 feet High Tide
Thu -- 01:40 PM PST     Moonrise
Thu -- 04:48 PM PST     Sunset
Thu -- 08:12 PM PST     -0.52 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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7.69.19.910.19.898.27.77.78.49.410.511.311.410.69.174.52.20.3-0.5-0.21.33.4

Tide / Current Tables for Duwamish Waterway, Washington
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Duwamish Waterway
Click for Map
Thu -- 02:46 AM PST     9.52 feet High Tide
Thu -- 04:02 AM PST     Moonset
Thu -- 07:27 AM PST     7.17 feet Low Tide
Thu -- 07:51 AM PST     Sunrise
Thu -- 12:31 PM PST     10.82 feet High Tide
Thu -- 01:40 PM PST     Moonrise
Thu -- 04:47 PM PST     Sunset
Thu -- 08:15 PM PST     -0.49 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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7.28.69.49.59.28.57.77.27.37.98.91010.710.7108.56.54.32.10.4-0.5-0.21.23.2

Weather Map and Satellite Images
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wmap_P
GOES 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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Pendleton, OR (3,6,7,8)
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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.