Saturday, February23, 2019 L-36.com


Marine Weather and Tides
Dover, ID

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 6:37AMSunset 5:23PM Saturday February 23, 2019 4:52 PM PST (00:52 UTC) Moonrise 11:47PMMoonset 10:03AM Illumination 79% Phase: Waning Gibbous; Moon at 19 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 Dover, ID
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location: 48.27, -116.6     debug


Area Discussion for - Spokane, WA
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Fxus66 kotx 232337
afdotx
area forecast discussion
national weather service spokane wa
337 pm pst Sat feb 23 2019

Synopsis
A moist frontal system is expected to stall over oregon and central
idaho tonight into Sunday before heading north Sunday night
through Tuesday. This will have the potential to produce moderate
to heavy snow across southeast washington into north-central
idaho. Lighter snow amounts are expected across the remainder of
the inland northwest. Unsettled weather will likely continue
across the mountains through most of next week, however no major
storms are expected at this time. Meanwhile, temperatures will
remain significantly colder than normal for this time of year with
no appreciable warming expected anytime soon.

Discussion
Tonight through Sunday: a cold, positively-tilted trough is dropping
southeastward along the british columbia coast this afternoon. The
weakest of shortwave ridges is moving across the inland northwest,
bringing a bit of subsidence across the region. As such, areas of
low clouds and fog were able to form early this morning, and has
since partially broken up and locally lifted into a low stratus
deck.

In the short term, the greatest forecast challenge will revolve
around a complex low feature progged to move inland over northern
oregon tonight. This feature is bringing a fair amount of moisture
inland, and will promote orographic lift along the east slopes of
the cascades with easterly flow. Given this, we have elected to
issue a winter weather advisory for snow for this area tonight
through midday Sunday. Moisture tries to move north and eastward on
Sunday, but the northward extent of this band may be limited by
breezy north to east winds projected to develop late tonight into
Sunday across northern id and wa. As such, the locations most likely
to receive snow on Sunday will be limited to southern washington and
the adjacent central id panhandle. Dang
Monday and Tuesday: yesterday I would have said I felt fairly
confident on the forecast for Monday. What a difference 24 hours
makes. Confidence is quite low now as to how far north the snow
will extend. The trend looks to be southern wa and the southern id
panhandle will see snow start Monday morning, and then the snow
will shift north through the day. Yes spokane will see snow, but
probably not as much as what was forecasted yesterday, and it is
not expected to impact the Monday morning commute anymore. Snow
amounts further south where am more confident of snowfall
(pullman, lewiston, camas prairie) looks to have the potential for
lower accumulations. Looking at SREF plumes, the GFS has much
lower snow amounts compared to the nam. The 12z ECMWF does still
show light to moderate snow accumulations, tho their QPF amounts
have come down slightly compared to the previous run. The snow
will come to an end Monday evening except SE wa and the S id
panhandle where snow will likely continue into Tuesday. As far as
the cascades go... They will see some light snow, but mainly south
of lake chelan. Have lowered snow amounts for the wenatchee area,
tho they will get some given the upslope flow. The GFS shows
literally no snow while other models are showing some light snow.

Trending towards the other models, especially for late Monday into
the evening.

High confidence: it will snow across southern and central wa and
the central and southern id panhandle. It may snow across northern
wa, but accumulations would be quite light.

Confident in the slower onset of snow Monday across central wa
and central id panhandle and areas to the north.

Confident that the Tuesday forecast for little to no snow is
good. The only exception is the central and southern id panhandle
where light snow will likely continue.

Low confidence: north id panhandle snow amounts. Some models are
taking the snow band and extending it into sandpoint and maybe as
far as bonners ferry.

Low confidence on the snow amounts. There is just such variance
between the models. Hopefully they will get their act together and
agree on the forecast.

Tuesday night and Wednesday: there is another wave that moves
through overnight Tuesday into Wednesday morning. Once again,
there are big differences in the models. The ECMWF is the most
bullish and brings widespread precip to the region, meanwhile the
gfs just clips our southeast portion of our forecast. The canadian
is in the middle ground. Main forecast change was to lower chance
of precip for portions of northern wa and down into the columbia
basin wenatchee area.

Nisbet
Thursday through Saturday: further into next week, an
inconsistency amongst the models begins to show in the position
of the low pressure system off the pacific northwest coast. We
will see another round of snow at the end of the week, and
possibly weekend. The low and associated shortwaves will have an
impact on the timing and location of future precipitation in the
inland northwest. Currently, it looks like the idaho panhandle and
cascades will have the greatest impact, but there is still a lot
time to see this change. Due to the lower than normal
temperatures, this precipitation will fall in the form of snow,
but areas like lewiston, may receive rain. While our temperatures
may "warm" in the latter part of the week, we will still see below
normal temperatures through the weekend. Most highs will remain
in the 20s and 30s, with lows dropping into the teens for most. Js

Aviation
00z tafs: I do not expect a repeat performance tonight at the area
airports, thanks to breezy northeasterly winds that will develop
late this evening. This should sweep out the low ceilings in the
area, and inhibit fog formation. A weak weather system will move
up from oregon overnight, and will spread light snow as far north
as highway 2. Accumulations will be light, but expect a few hours
of ifr conditions on Sunday. Rj

Preliminary point temps pops
Spokane 14 27 13 24 13 24 0 20 10 50 50 20
coeur d'alene 14 27 12 23 13 24 10 20 10 60 60 30
pullman 19 28 19 26 17 27 20 80 40 80 70 40
lewiston 26 35 26 32 25 33 30 70 40 80 60 40
colville 13 35 8 31 10 31 0 0 10 20 30 20
sandpoint 15 27 11 22 13 22 10 10 10 40 60 30
kellogg 15 26 13 22 14 23 20 50 20 70 80 50
moses lake 20 32 18 28 16 27 10 30 20 50 50 20
wenatchee 20 30 18 26 16 25 60 60 20 50 40 10
omak 20 32 16 29 16 27 30 20 10 20 20 10

Otx watches warnings advisories
Id... None.

Wa... Winter weather advisory from 10 pm this evening to noon pst
Sunday for east slopes northern cascades-wenatchee area.



Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Sandpoint, Sandpoint Airport, ID3 mi57 minN 010.00 mi32°F19°F60%1020.3 hPa

Wind History from SZT (wind in knots)
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Last 24hrSW3SW3SW3CalmCalmCalmS3CalmS3CalmW4CalmCalmCalmCalmCalmW3SW4CalmCalmCalmCalmCalmCalm
1 day agoCalmCalmCalmCalmCalmCalmCalmCalmSW3S5SW3S5SW6SW5S7S5SW5SW4W4S4W4SW7S3S3
2 days agoNE11NE10NE7N9NE11NE12N13
G18
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NE12NE9NE11NE11NE9NE6NE6NE7NE7E5SE5CalmCalmCalm

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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Spokane, WA (19,4,5,8)
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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.