Tuesday, August22, 2017 L-36.com

Marine Weather and Tides
Spokane Valley, WA

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 5:54AMSunset 7:48PM Tuesday August 22, 2017 5:47 PM PDT (00:47 UTC) Moonrise 6:54AMMoonset 8:30PM Illumination 1% Phase: New Moon; Moon at 1 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 222349
area forecast discussion
national weather service spokane wa
449 pm pdt Tue aug 22 2017

Warm temperatures continue through Wednesday with dry weather and
local breezy winds. A strong cold front will bring a threat for
thunderstorms Wednesday night into early Thursday mainly for
southeast washington and the idaho panhandle. This will be
followed by gusty westerly winds Thursday. After cool weather for
Thursday and Friday, the heat will return for the weekend and
early next week.

Tonight through Thursday night: a pattern change through this period will
bring a period of breezy winds, risk for showers and thunderstorms,
and cooler temperatures. High pressure currently centered over
the area will slide east with a shortwave trof currently nearing
the northern tip of vancouver island tracking through southern bc.

There is better model agreement today and confidence continues to
increase that it will bring breezy winds but at manageable

*changes to previous forecast: hi-res models are indicating a weak wave
of moisture tracking across eastern wa through the day
Wednesday. An increase in cloud cover is expected. Spotty light
showers will be possible. A stray thunderstorm cannot be
completely ruled out but carries very low probability. Sprinkles
were added to the forecast. Blowing dust was removed for Thursday
afternoon with less wind expected. Nocturnal showers t-storms
were expanded west on Wednesday night into far eastern wa to
account for 12z model trends.

* precipitation: southeastern wa and the idaho panhandle stand the
best shot for showers and embedded thunderstorms Wednesday
evening through Thursday morning. Instability parameters remain
mediocre only supporting isolated thunderstorm activity. Models
did trend back to the west with the band of moisture so we did
expand showers and storms back west across the wa id border.

* winds: winds will increase through the cascade gaps and columbia
basin starting Wednesday evening. Speeds of 10-20 mph will be
common. A cold front sweeps through Thursday morning with winds
becoming breezy to windy. Sustained speeds of 15 to 20 mph will
be common with gust 25-30 mph (locally stronger in a few spots).

The general direction will be from the west southwest through
Thursday evening then winds will swing around to the
north northwest, especially for north-central wa. The strongest
speeds will channel through the cascade gaps and across open
country of the palouse.

* potential hazards: the greatest concern will be fire weather.

Lightning strikes are a concern for new fire starts given the
regional dryness levels. Breezy winds Wednesday night and
Thursday may fan fires. Sb
Friday through Tuesday: dry weather will persist across the inland
nw and the heat will return for the end of august.

Temperatures: it will start off cool Friday with a westerly flow
aloft as a trough exits the canadian rockies. With a high pressure
ridge builds over california and nevada, the flow amplifies and
warmer temperatures surge northward. 850mb temperatures rising
each day, reflecting a warming trend of 2 to 5 degrees of surface
temperatures each day between the GFS and ecwmf. This will put
temperatures solidly in the 90s for Monday and Tuesday with
moderate heat risk potential in the favored hot valleys locations.

Smoke: areas of smoke will be a concern across the region, but after
the westerly winds settle down, confidence will be low on the
location of smoke and haze from regional fires. As southwest flow
aloft increases by early next week, could see more oregon smoke
arrive. At this time, safe to keep smoke in the vicinity of the
local fires under the light winds. Rfox

00z tafs: elevated smoke from oregon will continue to push
through washington and idaho, with the highest concentrations in
southern washington. The jolly mountain fire and norse peak fire
may send smoke into keat this evening and reduce visibility.

High clouds will move in from the south aft 12z and will thicken
through the day.

Preliminary point temps pops
Spokane 63 87 63 80 50 80 0 10 20 10 0 0
coeur d'alene 59 87 60 80 47 80 0 10 30 10 0 0
pullman 59 87 61 78 46 78 0 10 40 10 0 0
lewiston 66 93 66 86 54 86 0 10 40 20 0 0
colville 53 89 57 83 44 83 0 10 10 0 0 0
sandpoint 49 86 58 79 41 79 0 10 30 10 0 0
kellogg 55 85 59 76 47 76 0 10 40 40 0 0
moses lake 59 90 59 85 47 85 0 10 0 0 0 0
wenatchee 66 90 62 82 53 83 0 10 0 0 0 0
omak 60 92 59 86 51 86 0 10 0 0 0 0

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 mi54 minSW 610.00 miFair93°F37°F14%1012.8 hPa
Spokane, Spokane International Airport, WA18 mi54 minWSW 710.00 miMostly Cloudy89°F37°F16%1013.4 hPa
Coeur d'Alene Airport - Pappy Boyington Field, ID22 mi51 minN 010.00 miFair89°F46°F23%1015 hPa
Fairchild Air Force Base, WA24 mi1.8 hrsWSW 610.00 miFair90°F37°F16%1014.5 hPa

Wind History from SFF (wind in knots)
Last 24hrN5CalmN3CalmN3CalmNE3NE3CalmCalmCalmN3CalmCalmCalmE5CalmCalmCalm3CalmW64SW6
1 day agoW5SW7SW5CalmCalmCalmE4NE4NE5N3CalmN3N4CalmCalmCalmCalmCalmCalm33SW73Calm
2 days agoNW83CalmCalmCalmCalmCalmCalmCalmN3NE4NE4E5CalmCalmCalmCalmS10

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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Weather Map
IR Satellite Image from GEOS

GOES Local Image of PacificNorthwest    EDIT

Wind Forecast for Spokane, WA (20,4,5,8)
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Ground Weather Radar Station Spokane, WA
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weather_mapweather_map weather_map

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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 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.