Monday, November19, 2018

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 7:11AMSunset 4:22PM Monday November 19, 2018 7:13 AM PST (15:13 UTC) Moonrise 3:05PMMoonset 2:47AM Illumination 88% 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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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 191153
area forecast discussion
national weather service spokane wa
353 am pst Mon nov 19 2018

Dry and stable weather will continue through Tuesday. Look for
areas of low clouds and fog in the columbia basin to expand into
the east slopes of the cascades and lowlands of northeast
washington by Tuesday. The weather pattern will become wet and
unsettled starting Wednesday. Mountain snow may impact travel
across the cascade passes through the holiday weekend.

Today through Wednesday morning. No significant changes are
expected today and Tuesday as the ridge of high pressure dominates
the weather and slowly moves into the region. Even though the
atmosphere remains very dry the boundary layer moisture has been
slowly increasing the past 24 hours. The combination of increased
low level moisture and the very strong inversion will result in a
better chance for morning fog and stratus development today and
Tuesday. Lower Sun angle will make it much harder to break down
the inversion and allow much afternoon mixing. One last thing is a
closed low is spinning off the southern ca coast. The resultant
southerly steering flow will allow smoke from the california fires
to advect into the area as early as this afternoon. So, what to
expect? Areas that see fog and low clouds today will have a tough
time totally clearing out, but could see a short window of blue
sky late this afternoon, otherwise it will be another sunny day.

The fog stratus will expand in area tonight through Tuesday
morning, with the fog likely lifting into a low stratus deck
Tuesday afternoon, then conditions will deteriorate again Tuesday
night. Winds will remain light out of the northeast with
temperatures near seasonal norms.

Wednesday... Wednesday and out the rest of the week the weather
will become wet and unsettled as a series of weather systems move
through the region. The first is expected Wednesday
afternoon Wednesday night. This wave will weaken as it breaks down
the ridge, but it will allow the first shot of deeper moisture to
move into the region off the pacific. Isentropic up glide doesn't
move across the cascades until around mid-day Wednesday or later,
then slowly moves through the inland northwest late in the
afternoon and overnight. So we are expecting a chance of light
precipitation near the east slopes of the cascades, possibly
making it to the columbia river by sunset. Precipitation through
sunset will be very light, maybe a couple of hundredths near the
crest. Snow levels will make this as snow down to pass level and
the crest may see around an inch of snow by sunset. Tobin
Wednesday night through Sunday: by this time interval ridge axis
placement over eastern montana provides an open door along the
western edge of the ridge for weather disturbances to enter the
pacific northwest. One such system continuing its eastward movement
Wednesday night has a well established tap into moisture entering
from the south, and having such an orientation would help to
mitigate any rain-shadowing effects on the lee side of the cascade
crest, but at the same time a number of older model runs have hinted
that this system has some potential to split elongate weaken
substantially as it moves through Wednesday and with this in mind
the QPF and snow amounts associated with its passage are low and
pops are not ramped up too high except for perhaps the more
orographically favored areas Wednesday night into Thursday. A more
powerful low pressure system that has an intensifying and deepening
surface low progged to pass in a nearly west to east trajectory
close to the british columbia border is a critical weather pattern
worthy of robust and gusty winds Thursday night into Friday in
addition to the higher pops and QPF Thursday night ahead of the
increased winds. Brief interval where the jet stream is nearly
overhead of the southern portion of the forecast area allows for a
cold conditionally unstable airmass to linger over the northern
portion of the forecast area Friday which would suggest holding onto
more orographically looking pops for showers coupled with a dip in
snow levels but by Friday night weak low amplitude ridging cluttered
with disturbances and moisture fluxing through it maintains
influence over the forecast area. Current models suggest there is
potential for more wet frontal zones with somewhat warm southwest to
northeast trajectories of approach and exit to move through the
region over the weekend so an unsettled forecast remains with
somewhat low confidence in the timing of when such disturbances move
through. With such a dynamic weather pattern in place forecast
temperatures are generally expected to be on the warm side of what
would be normal for this time of year, especially so during the
gusty breezy Thursday night Friday portion of the forecast. Pelatti

12z tafs: high pressure and dry conditons remain over the area
this morning. However near the surface relative humidity is up
5-15 percent over 24 hours ago. The development and timing of fog
and low clouds will be the forecast challenge this morning.

Satellite and camera observations indicate that there is fog along
the snake river, it just hasn't gotten up to the airport yet and
ifr lifr CIGS vsby were pushed back until 15z. There is fog along
the lower snake and columbia rivers from kalw kpsc khms, but there
is is little confidence that this fog will make it into keat or
kmwh, but some lower vsby was added to kmwh around sunrise.

Fog stratus has also developed for the northern lakes including
lake coeur d'alene and along the spokane-columbia rivers. The
kcoe ksff will have the best chance for MVFR ifr conditons 14z-18z
with conditions improving through the afternoon. Kgeg kpuw should
remainVFR through 12z Tuesday. Tobin

Preliminary point temps pops
Spokane 42 25 44 29 44 34 0 0 0 0 10 40
coeur d'alene 43 24 42 28 46 34 0 0 0 0 0 40
pullman 46 29 49 31 49 35 0 0 0 0 0 40
lewiston 42 29 46 31 51 38 0 0 0 0 0 40
colville 41 24 37 30 42 32 0 0 0 10 10 40
sandpoint 41 24 39 28 44 32 0 0 0 10 10 50
kellogg 45 28 46 29 46 33 0 0 0 0 0 50
moses lake 39 23 35 27 41 29 0 0 10 10 20 30
wenatchee 43 27 36 30 40 31 0 0 10 10 30 30
omak 42 24 37 29 43 30 0 0 10 10 10 30

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

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 mi19 minN 010.00 miFair25°F21°F85%1029 hPa

Wind History from EAT (wind in knots)
Last 24hrCalm--CalmCalmCalmCalmCalmCalmCalmNW3CalmN3CalmNW3NW3CalmCalmCalmCalmCalmNW3NW4CalmCalm
1 day agoNW4CalmW4CalmCalmSW4CalmCalmSW4NW3CalmNW4NW3NW3NW3CalmCalmCalmCalmCalmNE3CalmCalmCalm
2 days agoSW3NW3NW3W4NW3W3NW4CalmCalmE3Calm5N18

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 (10,2,3,4)
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Ground Weather Radar Station Spokane, WA
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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 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 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.