Sunday, January24, 2021
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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 7:18AMSunset 4:41PM Sunday January 24, 2021 5:03 PM PST (01:03 UTC) Moonrise 1:56PMMoonset 5:05AM Illumination 89% Phase: Waxing Gibbous; Moon at 12 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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Area Discussion for - Spokane, WA
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FXUS66 KOTX 242332 AFDOTX

Area Forecast Discussion National Weather Service Spokane WA 332 PM PST Sun Jan 24 2021

SYNOPSIS. Scattered light snow returned to the Inland Northwest today. This prolonged event will continue overnight into early tomorrow afternoon. Additional snow chances will come Tuesday night through the weekend. Most impacts to commutes will begin Wednesday into the latter half of the week.


DISCUSSION. Tonight through Tuesday: A low off the British Columbia coast is dragging its way southward and will soon be resting off the Pacific Northwest coastline. As this low lingers, there will be a light, prolonged snowfall across much of the region, especially in northeastern WA and northern Panhandle tonight into early tomorrow afternoon. There were scattered snow flurries across the Inland NW this afternoon, but no accumulation was noted in lower elevations. Over the next 24 hours, from early evening into Monday morning, most of the region will receive less than 1" of snow and 1-2" if lucky. The greatest snow totals will be in portions of the Cascades and northern mountains with less than 5" expected over 24 hours. Each model run, over the past 24-48 hours, continue to forecast lower QPF values. Overall, the outlook is a slow moving system with very light snow through tomorrow afternoon.

This is not an out-of-season event, but caution should be taken tonight and in tomorrow's morning commute. Most snowfall will be overnight with temperatures remaining below freezing. This could lead to icy surfaces or slushy roads, especially in the morning hours.

Tuesday will be a brief break in an active week ahead, with dry conditions and mostly cloudy skies. Temperatures on Monday and Tuesday will remain near seasonal with highs into the upper 20s and 30s. Overnight lows will be warmer with widespread lows in the upper teens and 20s. With the extended cloud coverage, the lack of clear night skies will prevent very brisk, cold nights ahead, compared to last week. JS

Tuesday evening through Sunday: An active weather pattern is in store this week. A messy longwave trough will set up off the West Coast, and multiple impulses will move through before a longwave ridge pushes the trough to the east at the beginning/middle of the following week. This means several days with precipitation for the Inland Northwest and drier weather to follow. Wednesday will be the day to watch.

* TIMING AND POTENTIAL: Precipitation chances return late Tuesday afternoon to the Cascades. By Wednesday morning, much of the forecast area will be in or near snow showers. This likely excludes the LC Valley, which recent model runs have been keeping rather dry until Friday. Precip chances continue Thursday but the precipitation won't be as widespread or heavy as Wednesday, and it will be more focused in the northern mountains. Heading into Thursday night and Friday, most of the precipitation will shift into the Panhandle and perhaps the eastern most Washington counties. Saturday and Sunday, precipitation chances look higher for the forecast area as a whole. * PRECIPITATION TYPE: Most of the precipitation this week is expected to be snow, and some rain could mix in roughly along and south of the I-90 corridor in the afternoons. * WEDNESDAY SNOW AMOUNTS: There is still a bit of disagreement between models regarding what the highest snowfall amounts will be, but there is good agreement that the higher amounts will be Wednesday in our northern Washington zones and Waterville Plateau. This is generally north and west of the I-90 corridor. An average of various model amounts would be about 2 to 6 inches for this area, with less than an inch over SE WA and lower ID. /RC

AVIATION. 00Z TAFs: Spotty, light snow has been making it's way across the region this afternoon. Scattered snow will continue, but the frontal band, which could bring a few hours of steady light snow is expected later tonight. Some of the eastern Cascade slopes are starting to receive visibility reducing snow, but it will reach far eastern WA and the Panhandle closer to 06-10Z. The cloud deck continues to thicken, with lower ceilings. Passing snow is expected to continue to bring mist and lower visibilities. IFR and MVFR conditions are likely overnight. JS

PRELIMINARY POINT TEMPS/POPS. Spokane 25 32 25 33 24 33 / 30 40 30 0 10 50 Coeur d'Alene 24 33 24 33 23 33 / 20 30 20 0 10 40 Pullman 25 32 25 34 26 36 / 30 30 20 0 10 30 Lewiston 29 39 29 39 30 42 / 20 20 10 0 10 20 Colville 22 32 23 33 20 31 / 50 30 20 0 10 50 Sandpoint 22 31 24 31 23 29 / 30 20 20 0 10 60 Kellogg 24 32 23 32 23 32 / 20 20 30 0 10 50 Moses Lake 27 36 25 36 28 37 / 50 10 0 0 30 50 Wenatchee 25 34 23 31 26 32 / 60 10 0 0 50 50 Omak 25 34 26 33 26 33 / 40 20 10 0 30 50

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 mi70 minE 410.00 miFair32°F22°F66%1008.1 hPa
Lewiston, Lewiston-Nez Perce County Airport, ID24 mi67 minWSW 410.00 miFair33°F24°F70%1008.1 hPa

Link to 5 minute data for KPUW

Wind History from PUW (wind in knots)
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Last 24hrCalmE5SE4E7E11E9E7E9E6E4E6E10E9E11E10E12E12E8E8E6E8SE6E4Calm
1 day agoCalmNW4CalmNW8NW5NW3W5NW5W7W5W4W7CalmCalmCalmW4W8W7W8W9W64CalmCalm
2 days agoNW4NW3NW4NW5NW3CalmCalmCalmCalmCalmN3NE3CalmCalmCalmCalmCalmCalmNW3W4W6NW4W4NW6

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




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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.