Tuesday, November20, 2018 L-36.com


Marine Weather and Tides
Manson, 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 7:12AMSunset 4:21PM Tuesday November 20, 2018 3:17 AM PST (11:17 UTC) Moonrise 3:30PMMoonset 3:56AM Illumination 93% Phase: Waxing Gibbous; Moon at 12 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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7 Day Forecast for Marine Location Near Manson, WA
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location: 47.88, -120.08     debug


Area Discussion for - Spokane, WA
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Fxus66 kotx 201112
afdotx
area forecast discussion
national weather service spokane wa
312 am pst Tue nov 20 2018

Synopsis
Dry and stable weather will continue today with more fog and low
clouds over the lower columbia basin and over some of the river
valleys of northeast washington and north idaho. The remainder of
the inland northwest will see one more sun-filled day. The
weather pattern will become decidedly wetter and unsettled
starting Wednesday as a weak weather system moves through. This
system will likely bring a mix of rain and snow to the northern
valleys and light snow to the cascades. Elsewhere most valley
locations will see light rain. A much stronger system is expected
to arrive on thanksgiving with showery weather continuing into
Friday. This system will likely deliver moderate snows to the
passes impacting holiday travelers. Drier weather is expected to
return by the weekend and continuing into early next week except
for a small chance of mountain snow showers.

Discussion
Today and tonight... Upper level ridge will remain fixed over the
inland northwest once again resulting in another dry day. This
will result in more Sun and light winds across most of the area.

The only exception will be over the extreme southern portions of
the forecast area... Stretching from just south of moses lake to
lacrosse and points south toward the tri-cities. How long this
area will stick around is questionable, although there should be
some subtle erosion southward during the afternoon into the early
evening. Shallower fog is occurring this morning along the
columbia river over the northern columbia basin and extending up
the spokane river valley over extreme northern lincoln and spokane
counties. There was also spottier fog and low clouds over the
pend oreille river valley and near priest lake. These areas of fog
should burn off much more readily than the other area over the
southern columbia basin. Aside from the fog, all other locations
should see a sun-filled day with temperatures even a bit warmer
than yesterday. This equates to highs in the 40s to lower 50s,
with the coolest temperatures today expected from mattawa to
othello and lacrosse, where readings should struggle to exit the
30s. For tonight, the ridge begins to break down as a weakening
offshore system begins to meander eastward across the pacific
northwest. For tonight, the main impact will be an increasing high
cloud trend across the central portions of washington. This
should slightly mitigate the fog chances in these areas, while the
remainder of eastern washington and north idaho will once again
be subject to cool overnight temperatures and patchy valley fog.

Wednesday and Wednesday night... The aforementioned offshore system
is expected to continue its eastward push across the region as the
upper ridge slides east of the area. Clouds will continue to
thicken and lower as the system approaches, with light
precipitation possible near the cascades by late morning or early
afternoon and spreading into north idaho during the evening or
overnight hours. Although this system won't likely be terribly
wet, it will produce a good chance of precipitation over most
locations until the trailing occluded front pushes east of the
cascades by early Thursday morning. We expect the heaviest
precipitation to occur over the NE corner of washington and the
northern half of the idaho panhandle, where the best moist
isentropic ascent is expected. However a couple models are also
including a secondary axis of heavier precipitation extending from
the tri-cities to spokane. This axis coincides with the sw-ne
track of the mid-level shortwave. Confidence with this axis is
much lower. As far as precipitation totals, we would expect to see
totals ranging from 0-10-0.25 inches over NE washington and the
northern third of the idaho panhandle, with much lighter amounts
elsewhere. Most of the valley locations will see predominantly
rain, however locations near the cascades and near the canadian
border will likely see light snow with the heaviest totals likely
in the methow valley where amounts around an inch are possible.

Mountain passes will also see snow, but amounts should be a couple
inches or less. There will also be a very small chance of freezing
rain, as an elevated melting layer passes over freezing
temperatures near the ground. The best chances of this happening
will be over the southern half of chelan county possibly affecting
the leavenworth and plain areas and surrounding environs, but
confidence in this is quite low, as bufkit soundings suggest
against it and even it were to occur it would be brief and likely
preceded by light snow. Fx
Thursday through Monday: progressive weather pattern continues
including the passage of a low pressure system with well maintained
tap into subtropical moisture Thursday Thursday night. Jet stream
moves overhead and then gets positioned to the south of the forecast
area Friday as a surface low gets dragged from south to east near
the british columbia border by this passing weather system thus the
continued expectation of breezy gusty conditions Thursday night into
Friday. Yet again ridging moves in and shows some amplification with
northwest flow keeping minor pops over far southeast locations of
the forecast area Friday night that transitions to a drier forecast
as the ridge shows more amplification Saturday. The ridge quickly
gets flattened down by a disturbance burrowing thru it with a
northwest to southeast trajectory of approach exit Saturday
night Sunday but models show it to rebound Monday allowing for a
return to drier weather. Initially forecast temperature remain on
the warm side of what would be normal for this time of year
considering how active the weather pattern is in the beginning but
towards the end may take a dip below normal considering how a more
northerly component to the low level flow starts to show up sometime
over the weekend. Pelatti

Aviation
06z tafs: fog is filling the columbia basin late this evening from
hanford to tri-cities to walla walla. Models show the fog bank
having a hard time moving north and east due to easterly boundary
layer winds across the upper columbia basin... And saddle mountain
acting as a barrier for fog migration north into kmwh. Satellite
trends support this idea. Fog patches are possible at kcoe ksff
12-17z Tuesday otherwiseVFR conditions are expected for all taf
sites through 06z Wednesday. Jw

Preliminary point temps pops
Spokane 43 26 43 34 43 34 0 0 0 40 50 80
coeur d'alene 45 25 47 34 43 33 0 0 0 50 60 80
pullman 51 29 49 35 46 34 0 0 10 50 50 80
lewiston 49 30 50 38 51 37 0 0 0 30 40 60
colville 40 26 42 32 41 32 0 0 10 60 60 70
sandpoint 42 24 44 33 41 33 0 0 0 70 70 80
kellogg 48 27 47 33 41 33 0 0 0 50 70 80
moses lake 45 24 39 28 45 31 0 0 20 30 40 80
wenatchee 44 30 38 29 40 31 0 0 20 30 50 70
omak 43 27 42 31 41 30 0 0 30 30 40 80

Otx watches warnings advisories
Id... Air stagnation advisory until 1 pm pst Wednesday for central
panhandle mountains-coeur d'alene area-idaho palouse-lewis
and southern nez perce counties-lewiston area-northern
panhandle.

Wa... Air stagnation advisory until 1 pm pst Wednesday for east slopes
northern cascades-lower garfield and asotin counties-moses
lake area-northeast blue mountains-northeast mountains-
okanogan highlands-okanogan valley-spokane area-upper
columbia basin-washington palouse-waterville plateau-
wenatchee area.



Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Wenatchee - Pangborn Memorial Airport, WA33 mi23 minNW 310.00 miFair27°F24°F89%1024.9 hPa

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Last 24hrNW3NW4CalmCalmCalmCalmCalmW4CalmCalmCalmCalmCalmCalmNW4CalmCalmNW4NW5N4NW3NW5W6NW3
1 day agoNE3CalmCalmCalmCalm--CalmCalmCalmCalmCalmCalmCalmNW3CalmN3CalmNW3NW3CalmCalmCalmCalmCalm
2 days agoN4NW8NW3CalmNW4CalmW4CalmCalmSW4CalmCalmSW4NW3CalmNW4NW3NW3NW3CalmCalmCalmCalmCalm

Tide / Current Tables for
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Tide / Current Tables for
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Weather Map and Satellite Images
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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.
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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Spokane, WA (6,6,7,8)
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Ground Weather Radar Station Spokane, 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.