Friday, March22, 2019 L-36.com


Marine Weather and Tides
Spokane Valley, 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 6:45AMSunset 7:05PM Friday March 22, 2019 5:27 PM PDT (00:27 UTC) Moonrise 9:24PMMoonset 8:03AM Illumination 96% Phase: Waning Gibbous; Moon at 17 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 Spokane Valley, WA
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location: 47.64, -117.19     debug


Area Discussion for - Spokane, WA
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Fxus66 kotx 222338
afdotx
area forecast discussion
national weather service spokane wa
438 pm pdt Fri mar 22 2019

Synopsis
Look for increasing clouds through tonight, then the weekend will
feature temperatures near average, with rain and mountain snow
showers over the idaho panhandle and portions of eastern
washington. Typical cool and showery weather is expected much of
next week, with high temperatures mainly in the 50s.

Discussion
Tonight into Saturday: a weakening and shearing frontal system
will cross the cascades this evening and end up over the idaho
panhandle by Saturday morning. Bands of rain have moved into
western washington this afternoon and precipitation will reach the
cascades this evening. As the front moves east of the cascades,
it is expected to lose much of its deep layer moisture. Not only
will the mountains work to shear the front apart, but the majority
of the upper level forcing will become focused over oregon and
northern california overnight in the vicinity of the upper level
jet. For tonight into Saturday, precipitation chances for the
inland northwest will be low with a 20 to 40 percent chance over
the blue mountain of southeast washington, the l-c valley, and the
camas prairie. Light rain and high elevation snow will also be
possible for the high terrain along the canadian border. For the
columbia basin into the spokane area, it looks dry.

Saturday night and Sunday: there are significant changes to the
forecast for Saturday night into Sunday. The models have trended
wetter with the emergence of a shortwave out of eastern oregon
late Saturday night. Precipitation chances have been increased
region wide for Sunday with the most significant rain and high
elevation snow expected over the idaho panhandle. With snow
levels as low as 4000 feet, skiers will have the opportunity for
some late season fresh snow. Air and road temperatures may be
marginal any travel impacts Sunday morning, but motorists may
encounter some wet snow at lookout pass on Sunday.

Monday: the forecast for Monday and Monday also looks wetter. The
operational GFS appears to be the fastest to spread rain into
washington Monday afternoon. By evening, the majority of the
models and their ensembles spread rain and high elevation snow
across the inland northwest. Gkoch
´╗┐Tuesday to Friday: the inland northwest will be in a cooler,
showery pattern as a coastal trough sends shortwaves inland, at
least until late week when it starts to fill and stretch. The
track of some of these features is still being pinned down but
loosely models suggest the best threats will be around the
northern mountains and blues to lower panhandle Tuesday, followed
by a lull going into early Wednesday, before chances rise again
late Wednesday into Thursday. Some models keep chances alive
through Friday before the risk abates and others dry out the
region on Friday, so these details will need fine-tuning.

Precipitation-type: overall these look like valley rain and
mountain snow producers, with snow levels averaging 3-4kft.

However morning and overnight temperatures would be cool enough to
allow for some snow or a rain snow mix down to valley floors. As
for precipitation amounts: on average models suggest these are not
significant precipitation makers, but the Wednesday night Thursday
wave will have to be monitored as a few runs have shown some more
moderate pockets of precipitation. Overall afternoon temperatures
are expected to be near seasonal norms, while overnight lows are
expected to be near to slightly below normal. Cote'

Hydrology
In the short term, we will be watching paradise creek at moscow
again this evening. It fell short of flood stage last night as
melting snow moved moved through the creek. We expect rises on
paradise creek to be less than yesterday. Afternoon temperatures
have been a few degrees cooler and the basin that feeds paradise
creek continues to lose snowpack.

Most of our snow is gone across the upper columbia basin, spokane
area, and the washington palouse. Some fields have standing water,
but we haven't heard of many issues in the last day or two. Areas
around priest lake, sandpoint and bonners ferry will continue to
lose their snow in upcoming days. Fields that typically experience
flooding will be prone to standing water over the weekend and
early next week.

The forecast for Sunday looks wetter than previously thought. At
this time it looks like a tenth to quarter of an inch or rain for
much of the idaho panhandle and eastern third of washington. The
system for Monday night could be wetter. At this time, the
upcoming rain isn't raising any red flags. For perspective,
several of our warm days this week, produced between a half and
three quarters of an inch of snow melt from our snowpack. Much of
the melting snow was absorbed into the ground leaving most of our
streams and rivers well below flood stage. With the exception of
paradise creek, our rivers and streams look to have the capacity
to receive runoff over the next several days. Gkoch

Aviation
00z tafs:VFR conditions are forecast for all TAF sites through
00z Sunday. The arrival of a sheared out cold front tonight will
produce increasing mid and high level clouds. Vicinity showers
have been included in the lewiston and pullman tafs late tonight.

Deep mid and low level moisture will be limited, but there may be
enough forcing over southeast washington and the southern idaho
panhandle for some showers. Jw

Preliminary point temps pops
Spokane 37 53 36 48 31 57 10 10 20 60 10 10
coeur d'alene 37 52 35 46 32 56 10 10 10 60 20 10
pullman 36 51 34 46 33 54 20 20 50 70 10 20
lewiston 42 56 40 53 35 58 30 20 60 70 10 10
colville 36 55 34 50 33 58 10 20 10 60 30 10
sandpoint 34 50 33 45 32 53 10 10 10 60 30 0
kellogg 36 51 34 46 33 56 10 20 10 60 30 10
moses lake 38 58 37 57 33 59 0 10 40 50 0 30
wenatchee 38 58 39 56 36 53 10 0 40 30 10 40
omak 37 59 36 55 35 58 10 10 30 40 20 20

Otx watches warnings advisories
Id... None.

Wa... None.



Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Spokane, Felts Field, WA7 mi35 minS 910.00 miFair57°F39°F51%1013.3 hPa
Spokane, Spokane International Airport, WA18 mi35 minS 7 G 1610.00 miPartly Cloudy54°F37°F55%1013.3 hPa
Coeur d'Alene Airport - Pappy Boyington Field, ID22 mi32 minS 810.00 miFair55°F37°F53%1015.7 hPa
Fairchild Air Force Base, WA24 mi90 minSSE 810.00 miFair54°F41°F61%1013.6 hPa

Wind History from SFF (wind in knots)
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Last 24hr--SW8W5W3CalmCalmN3NE3NE4NE4NE4NE4NE4CalmE3CalmCalmCalmSW8S764S7S9
1 day agoCalmN3W3NE3NE5NE4CalmCalmNE5CalmCalmCalmNE3CalmCalmCalmCalmCalmW3CalmCalmW5SW6W6
2 days agoCalmN3CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmS33CalmCalmCalmCalmCalm

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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Wind Forecast for Spokane, WA (20,4,5,8)
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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.