Thursday, February22, 2018 L-36.com


Marine Weather and Tides
Dover, ID

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 6:36AMSunset 5:23PM Thursday February 22, 2018 6:18 PM PST (02:18 UTC) Moonrise 11:12AMMoonset 12:55AM Illumination 53% Phase: First Quarter Moon; Moon at 8 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 222354
afdotx
area forecast discussion
national weather service spokane wa
354 pm pst Thu feb 22 2018

Synopsis
Cold and generally dry conditions will persist through Friday
morning except for some passing light snow showers or flurries at
times. A series of storm systems will impact the inland northwest
this weekend into early next week with the potential for more
snow, breezy conditions and continued below normal temperatures for
most locations.

Discussion
Tonight: the center of the upper level low circulation has slowly
drifted into northeast or southeast wa this afternoon. This will
begin to pull moisture away from the northern zones with clouds
and flurries decreasing from around the spokane coeur d'alene area
to the northern mountains. Moisture will hang around across
southeast washington and into the central idaho panhandle into
tonight. Northwesterly upslope flow into the camas prairie will
favor this area with around an inch of snow accumulation
expected. Most of this snow will fall through the evening and
then taper off overnight. Clearing skies across the northern
valleys and weak winds will result in strong radiational cooling.

Expect the northern mountain valleys to cool off near to or below
zero. Patchy fog is also expected to develop in these valleys by
Friday morning. Svh
Friday through Sunday night: three shortwaves will drop into the
northwestern us between Friday and Sunday night. The first wave
will usher a quick moving frontal band of snow through the region
from west to east Friday afternoon. Timing is bit slower than
previous runs however snow amounts still look light as the system
weakens while reaching the idaho panhandle. A second wave will
bring the potential for heavier snows Friday night into Saturday.

This will be a stronger shortwave with a much more pronounced
upper-level cold pool. Consequently, the atmosphere will become
increasingly unstable supporting bands of heavier snow showers.

Moderate midlevel flow Friday night and Saturday will highly favor
the cascade crest and idaho panhandle for the heaviest snow
amounts with a great deal of shadowing in the lee of the cascades.

However, given the steep lapse rates and strong westerly flow
across the barrier, we anticipate a good deal of slop over snow
into the valleys of western chelan and okanogan counties,
expanding as far east as wenatchee and the waterville plateau at
times. Following a break Saturday night, a third and broader
shortwave sags in from the Sunday. This will be the warmest and
windiest system of the weekend with some uncertainty still
existing how strong the winds may become. Westerly flow
accompanying this system will also lead to the heaviest snow
amounts on the cascade crest and again idaho panhandle with
similar amounts to Friday Saturday.

* snow: preliminary snowfall amounts for Friday into Saturday range
from under half an inch in the southwestern basin and wenatchee
area toward 1-3 inches across northern wa and far north
panhandle. Amounts increase into the 3-5 inch range along the
i-90 corridor from cd'a to the montana border, palouse (mainly
east of st john to mayview), camas prairie, and blue mtns. The
heaviest amounts are expected in the central panhandle mtns of
southern shoshone county impacting the st joe river valley
southward. 6-10 inches are possible at locations like deary,
clarkia, and avery. Amounts of this nature will also be common
at stevens pass toward lake wenatchee... Decreasing toward 2-5
inches for plain and leavenworth and western reaches of the
methow valley. Amounts with the second round of snow Sunday will
be similar for the cascades with potential for heavier amounts
into plain and leavenworth under stronger westerly flow. Little
to no snow is expected in the lee of the cascades and once again
we see the potential for 1-3 inches into the valley of NE wa
and N id increasing toward 2-4 inches into the central panhandle
of idaho. It is possible that snow will struggle to accumulate
with any bands Sunday afternoon for the lowlands as temperatures
warm near to above freezing.

* winds: winds on Friday and Friday night across the eastern
columbia basin and into the palouse will increase from the
southwest toward 10-20 mph with gusts around 25 mph. Winds
become more west to northwest Saturday afternoon with speeds
generally 10-15 mph. A much stronger pressure gradient on Sunday
will bring a threat for southwest winds of 15-25 mph with gusts
30-45 mph and stronger speeds in the mountains. There is high
confidence for breezy winds Sunday but considerable uncertainty
regarding exact speeds with moderate spreads regarding the
degree of cross- CWA pressure gradients and orientation of winds
a few thousand feet off the surface. The GFS is the windiest
solution while the ECMWF is least windy. Forecast leaned toward
the windier solution with support from the NAM but still below
the speeds of the gfs.

* impacts: light snow on Friday accompanied by cold temperatures
will bring the potential for slick roads. Heavier snows in the
idaho panhandle and cascade crest may lead to hazardous travel
conditions Friday night and Saturday. Lighter accumulations but
breezy winds could lead to difficult travel across the blues,
camas prairie, and palouse Friday night and Saturday. The
renewed threat for snow on Sunday will renew wintry travel for
the cascades and idaho panhandle. As winds pick up Sunday,
drifting snow may become an issue but confidence is not as high
with less snow and warmer temperatures expected. Sb
Monday through Thursday: after Sunday's system exits we'll see a
decrease in shower coverage, but the upper trough of low pressure
remains over the area, meaning continued chances for snow showers,
mainly for the mountains of the idaho panhandle and cascades. By
Monday night and early Tuesday we will get more of a reprieve
from the precipitation as a weak and brief ridge builds in. This
doesn't last long and progressive pattern continues. Models are
coming into better agreement that our next impactful snow event
will be on or about Wednesday as a trough moves in associated with
a low pressure system sliding down the bc coast. If the low stays
to our west which models are all showing, then Wednesday and the
next several days should have a good chance of snow showers.

Starting Wednesday models show an extended period of with a
saturated dendritic growth layer and ample lift. Under this
progressive pattern temperatures will remain below average,
reaching the mid to upper 30s in most locations. Bw

Aviation
00z tafs: light snow or flurries will linger in the vicinity of
pullman and lewiston this evening as an elongated low over
southern idaho and nevada shears to the southeast. Clearing skies
and light winds may promote areas of shallow fog around spokane
and coeur d'alene prior to daybreak. Our air mass is quite dry
with afternoon dewpoints in the low teens, so our expectation is
that any fog will be shallow and disperse within a few hours of
sunrise. Look for mid and high level clouds to increase on Friday
ahead of our next chance for snow Fri night into Sat morning.

Gkoch

Preliminary point temps pops
Spokane 8 27 25 36 24 37 10 30 90 80 10 60
coeur d'alene 4 27 23 35 20 37 10 20 90 90 20 90
pullman 10 26 25 35 24 37 20 10 80 90 30 80
lewiston 18 34 31 42 30 44 20 10 50 70 20 70
colville 7 28 21 36 21 39 0 60 70 50 10 60
sandpoint 5 26 23 33 22 36 0 30 100 70 20 90
kellogg 11 24 21 31 21 33 10 20 100 90 30 100
moses lake 13 32 27 44 28 45 0 20 10 20 10 20
wenatchee 14 33 27 42 27 42 0 20 50 40 10 60
omak 8 28 21 38 22 40 0 40 20 40 10 60

Otx watches warnings advisories
Id... None.

Wa... None.



Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Sandpoint, Sandpoint Airport, ID3 mi24 minNNE 910.00 mi27°F10°F50%1022 hPa

Wind History from SZT (wind in knots)
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Last 24hrCalmCalmNE3CalmCalmNE8N9NE7NE10
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1 day agoSW3CalmCalmCalmCalmCalmCalmCalmW3CalmCalmCalmCalmCalmCalmCalmCalmSE4SE6SE5SE8SE7E4Calm
2 days agoCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmNE3NE6CalmS4SE4S4S4CalmCalm

Tide / Current Tables for
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Weather Map and Satellite Images
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Weather Map
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IR Satellite Image from GEOS
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GOES Local Image of PacificNorthwest    EDIT
Geos

Wind Forecast for Spokane, WA (21,6,7,8)
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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.