Friday, December13, 2019
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Marine Weather and Tides
Spokane Valley, WA

Version 3.4
NOTICE
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 7:27AMSunset 3:59PM Friday December 13, 2019 5:29 AM PST (13:29 UTC) Moonrise 6:32PMMoonset 9:55AM Illumination 97% Phase: Waning Gibbous; Moon at 16 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 131215 AFDOTX

Area Forecast Discussion National Weather Service Spokane WA 415 AM PST Fri Dec 13 2019

SYNOPSIS. Snow showers are expected through the weekend mainly over the mountains. Temperatures will also cool back towards seasonal normals by Sunday. Monday and Tuesday are likely to be dry with a return to unsettled weather possible for the middle to end of next week.

DISCUSSION. Today through Saturday: Moist westerly flow aloft persists across the region, aided by a 180kt+ jet that is currently making its way across Oregon. An embedded shortwave is moving through the region last night and this morning, with snow falling along the Cascades, the Blue Mountains, and across portions of the Idaho Panhandle. Locally breezy southwest winds continue early this morning across the West Plains and the Palouse . look for these to gradually diminish through the day. Low clouds with patchy fog are generally prevalent along and north of US Highway 2 this morning.

Flow aloft will become a bit more northwesterly today into Saturday, generally bringing drier conditions across central and eastern Washington. This pattern should promote orographically- enhanced snow showers to continue over the Cascades and over the Idaho Panhandle today and tomorrow. A new wrinkle with the forecast: a few of the high resolution HREF members are hinting at the potential for snow showers for portions of eastern WA this afternoon into tonight (rather than keeping it in Idaho), and possibly into Saturday. We don't have a whole lot of confidence in this snow forecast, but it definitely bears watching. Dang

Saturday night through Thursday: A cool and unstable northwest flow continues into Sunday with a chance of snow showers mainly across the Idaho Panhandle, Camas Prairie, and Blue Mountains. On Monday and Tuesday a ridge moves in with areas of stratus and patchy fog expected. There are some model differences with the strength of the ridge with the potential for light snow to clip the Cascade crest and areas near the Canadian border on Tuesday. On Wednesday and Thursday a trough off the coast will introduce a milder southwest flow aloft. A moist frontal boundary also moves closer to the area during this period but low confidence at this time of the details. There are large model differences in temperatures mid week with the ECMWF MOS suggesting highs in the low 40s for Spokane while the GFS MOS has low 30s. Ultimately which one is correct will likely impact precipitation type with the current forecast based on ensemble forecasts which tends to split the difference. JW

AVIATION. 12Z TAFS: Precipitation has decreased across the region's TAF sites as the storm system moves eastward. MVFR to IFR conditions have developed at KGEG-KSFF-KCOE-KPUW-KEAT, with VFR conditions at KLWS-KMWH. Expect modest improvement this afternoon to MVFR and possibly VFR. Snow showers may develop this afternoon and tonight across eastern WA and northern ID, possibly impacting KGEG-KSFF-KCOE- KPUW-KLWS, however forecast confidence is low. Dang

PRELIMINARY POINT TEMPS/POPS. Spokane 39 28 34 25 31 22 / 10 20 20 10 10 10 Coeur d'Alene 38 28 34 26 31 22 / 20 30 30 20 20 10 Pullman 41 29 36 27 33 24 / 20 20 40 20 20 10 Lewiston 44 33 39 30 37 27 / 20 20 30 20 20 10 Colville 38 24 36 20 33 14 / 10 10 10 10 0 0 Sandpoint 36 29 34 25 30 22 / 40 30 30 30 20 10 Kellogg 36 29 34 26 30 23 / 60 50 50 30 30 20 Moses Lake 41 25 36 23 34 20 / 0 10 10 10 0 0 Wenatchee 39 26 36 24 33 20 / 10 20 10 10 0 10 Omak 37 25 34 22 32 18 / 10 10 10 10 0 0

OTX WATCHES/WARNINGS/ADVISORIES. ID . Winter Storm Warning until 10 AM PST this morning above 4000 feet for Central Panhandle Mountains.

Winter Storm Warning until 10 AM PST this morning above 3000 feet for Northern Panhandle.

WA . Winter Storm Warning until 10 AM PST this morning for the cascade crest including highway 2 between coles corner and stevens pass for East Slopes Northern Cascades.




Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Spokane, Felts Field, WA7 mi36 minWSW 810.00 miOvercast37°F33°F86%1018.6 hPa
Spokane, Spokane International Airport, WA18 mi36 minSSW 118.00 miOvercast34°F30°F89%1018.4 hPa
Coeur d'Alene Airport - Pappy Boyington Field, ID22 mi33 minSW 810.00 miOvercast35°F32°F89%1020.8 hPa
Fairchild Air Force Base, WA24 mi91 minSW 710.00 miMostly Cloudy33°F32°F100%1018 hPa

Link to 5 minute data for KSFF

Wind History from SFF (wind in knots)
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Last 24hrSW13
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CalmSW5S4SW4S85SW5NE3CalmW8SW4CalmNE3CalmCalmSW106W7W5SW4SW5SW8
1 day agoCalmCalmCalmCalmCalmCalmCalmCalmE3CalmCalmCalmCalmCalmCalmCalmCalmCalmN3CalmCalmNE3NE3SW4
2 days agoCalmCalmCalmCalmCalmSE4SE3CalmCalmCalmCalmCalmCalmCalmCalm3W4W5CalmCalmNW4CalmCalmCalm

Tide / Current Tables for
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Tide / Current Tables for
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Weather Map
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GEOS 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 (8,2,3,4)
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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 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.