Monday, November30, 2020
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Marine Weather and Tides
Moscow, ID

Version 3.4
NOTICE
8/26/2020 The 7 day forecast is taking about 5 seconds to load but it will eventually load. NOAA is still working on it.
8/18/2020 NOAA continues to have trouble. Wind guest will occasionally be left off graphs. I am working with NOAA to resolve the issue.
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
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.

Sunrise 7:09AMSunset 4:03PM Monday November 30, 2020 9:27 AM PST (17:27 UTC) Moonrise 5:24PMMoonset 8:26AM Illumination 100% Phase: Full Moon; Moon at 15 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 Moscow, ID
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location: 46.73, -117     debug


Area Discussion for - Spokane, WA
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FXUS66 KOTX 301213 AFDOTX

Area Forecast Discussion National Weather Service Spokane WA 413 AM PST Mon Nov 30 2020

SYNOPSIS. A frontal system will bring light snow to much of the Inland Northwest today, as well as locally gusty winds to southeast Washington. Expect seasonably cool temperatures, light winds, and dry weather from Tuesday into next weekend with the return of high pressure.

DISCUSSION. Today through Tuesday: A well defined cold front over western Washington will spread precipitation east of the Cascades early this morning in Central Washington, reaching Eastern Washington and north Idaho mid to late morning. Until then patchy freezing fog has developed around Moses Lake, and in the northern valleys and Idaho Panhandle. Strong lift with the front will result in widespread precipitation except in the Columbia Basin and LC Valley where mid level westerly flow (850mb winds 30-45 kts) will result in only a chance of precipitation. Wet bulb zero heights are near or below 0C along and north of I-90 supporting mainly snow with the front while south of I-90 a mix of rain and snow is expected for the valleys with snow in the mountains. There does remain some potential for localized freezing rain south of Moses Lake where freezing fog has developed this morning, and an elevated melting layer could result in icy spots.

This is a quick moving front supporting mainly light snow amounts in the valleys (up to 2 inches). Less than 1 inch is forecast for the I-90 corridor from Moses Lake to Kellogg. The Cascade crest however will benefit from moderate snow with the front followed by post frontal showers with near advisory snow amounts of 5 to 10 inches which may cause travel impacts over Stevens Pass. Per coordination with NWS Seattle have opted to not issue any highlights at this time for the East Slopes of the Cascades given borderline advisory amounts. Behind the front breezy to locally windy conditions are forecast for the Wenatchee area, Waterville Plateau, Columbia Basin, West Plains, and Palouse with gusts 25-35 MPH.

Tonight dry conditions are expected as high pressure begins to build into the area except for a chance of lingering showers in the Idaho Panhandle in the evening. A moist boundary layer will keep stratus prevalent across the Idaho Panhandle and NE WA valleys, likely expanding into the Spokane area and West Plains Tuesday morning as freezing fog develops under light winds. Light winds and the building ridge will likely keep much of this stratus in place into Tuesday afternoon. JW

Tuesday night through Monday: High pressure will dominate the forecast area through the week, with the main forecast challenge being fog and low clouds. Computer models agree on the center of the surface high being east of us on Tuesday night and Wednesday. This will create an easterly wind which should push any fog/stratus into the Basin, away from the Panhandle. The Palouse should be sunny under this regime.

As the week progresses, the pressure gradient will relax, but still be light easterly. This should allow fog/stratus to fill back into all of the valleys in the Inland NW and continue through the weekend. This kind of forecast is always fraught with big bust potential, especially with temperatures.

By Monday, a very weak front approaches the Pac NW and falls apart as it makes landfall. Enough of it could survive to bring the threat of rain or snow to the Cascades on Monday. RJ

AVIATION. 12z TAFS: VLIFR conditions from FZFG over the northern valleys and parts of the Columbia Basin will lift this morning with incoming cold front. A quick burst of snow is expected with the front this morning along with LLWS at KGEG/KSFF/KCOE/KEAT as winds increase above the surface with the front. MVFR conditions will be most prevalent with the front passage but localized moderate snow intensity and IFR conditions are possible especially north of Spokane and Coeur d'Alene. West winds behind the front are expected to mix down for most TAF locations. This combined with drier air mixing down should allow CIGS to become VFR for all TAF sites. Overnight fog and stratus will expand around the Spokane area TAF sites but confidence is low with timing and details of precise restrictions. KLWS will benefit from downslope flow off area mountains with VFR conditions expected to persist through the TAF period. JW

PRELIMINARY POINT TEMPS/POPS. Spokane 41 27 34 19 38 21 / 90 0 0 0 0 0 Coeur d'Alene 40 29 35 24 38 24 / 90 10 0 0 0 0 Pullman 41 27 36 22 37 24 / 70 0 0 0 0 0 Lewiston 47 32 43 26 38 27 / 30 0 0 0 0 0 Colville 34 26 36 20 36 21 / 90 0 0 0 0 0 Sandpoint 35 30 35 24 36 25 / 100 10 0 0 0 0 Kellogg 37 30 35 27 40 21 / 100 60 0 0 0 0 Moses Lake 47 24 40 23 36 19 / 40 0 0 0 0 0 Wenatchee 45 27 40 27 37 26 / 60 0 0 0 0 0 Omak 36 26 37 22 32 23 / 80 0 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
Pullman / Moscow Regional Airport, WA7 mi35 minW 10 G 1710.00 miOvercast39°F27°F62%1019.4 hPa
Lewiston, Lewiston-Nez Perce County Airport, ID24 mi32 minSE 810.00 miOvercast37°F26°F65%1019.2 hPa

Link to 5 minute data for KPUW

Wind History from PUW (wind in knots)
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Last 24hrE13E14E14E11E13E12E15E11E15E11E13E14E10E7E7E10E11E12E12E9E12SE11SE8W10
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1 day agoE8E5E9E9SE7SE5E4NE5E9E6E8E11E8E9E10E9E5E7E10E7E11E14E10E14
2 days agoSE11E13SE15SE12SE13E12E9E14E11E9E10E11E11E10E12SE12E13SE9E8E7E8SE9NE4SE9

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
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 numerous 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.