Thursday, January23, 2020
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Marine Weather and Tides
Moscow, ID

Version 3.4
NOTICE
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 7:20AMSunset 4:39PM Thursday January 23, 2020 7:22 PM PST (03:22 UTC) Moonrise 7:46AMMoonset 4:28PM Illumination 1% Phase: Waning Crescent; Moon at 29 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 232353 AFDOTX

Area Forecast Discussion National Weather Service Spokane WA 353 PM PST Thu Jan 23 2020

SYNOPSIS. A mild and active weather pattern is expected into next week with several rounds of mainly valley rain and mountain snow.

DISCUSSION. Tonight through Friday: Our unsettled weather pattern continues today as a SW-NE oriented frontal system approaches the coast. Precipitation associated with a warm front passed through this morning, and as of this writing stratiform precipitation is moving through central and eastern Washington. Steady precipitation will increase over the next few hours, and continue tonight into Friday for portions of the region. Considerable warm air aloft has moved into the region, and the lowlands will largely see precipitation fall in the form of rain with this system. The threat for freezing rain along the east slopes of the Cascades has subsided as surface temperatures have warmed above freezing. In fact, snow levels are expected to be above 5000-6000 ft, well above major pass levels. Look for lows generally in the 30s tonight, and highs in the 40s to lower 50s Friday. As the cold front passes Friday, we may see locally breezy southwest winds develop across the Columbia Basin and into the Palouse.

Friday night through Saturday: Generally quieter weather is forecast across the region for Friday night, which may set the stage for foggy conditions across the valleys. The next in our series of weather systems looks to arrive during the day Saturday. This system won't quite have the moisture tap of prior or subsequent storm systems . expect generally light valley rain and mountain snow with that system.

Saturday night through Sunday: Our unsettled weather pattern continues as the next storm system arrives late Saturday into Sunday. This system is projected to have a better moisture tap than the Saturday system, and perhaps not unlike the current storm system. This again will be another milder storm system, with valley rain and snow levels rising to 3500-4500 ft.

Given these frequent rounds of lowland rain, we will be monitoring for potential hydrologic issues. At this time, guidance from the Northwest RFC and the National Water Model would suggest that mainstem rivers and streams will be able to handle the rainfall and minor lowland snowmelt. The primary concerns at this stage will be localized roadway and field flooding. Dang

Monday through Thursday: The same pattern continues as one upper level disturbance ejects east from the Inland Northwest as another system enters the Pac Northwest. A split upper flow setting up by Tuesday complicates the pattern with ensemble model guidance system disagreeing as to possible trajectories for applicable forcing and low to mid-level moisture transport. European guidance takes a more direct approach with moisture evenly spread across the Cascades while the GFS ensemble shows less precipitation impacts across the northern Cascades with increased POPs south into the Camas Prairie and central Idaho Panhandle drawing a winning ticket. But this pattern will settle down in preparation for the next upstream disturbance entering the region by late Wednesday into Thursday. Plenty of moisture will be provided by a well-established atmospheric river along with decent dynamics accompanying a 160-170kt North Pac Jet core. Although timing improves with each model run, ensemble and deterministic guidance differ slightly on how much moisture will inject into the region with the westerly upper flow. Although the take home message does imply that some uncertainty still follows the general model guidance, the above average temperatures and varying snow levels will keep any significant snowfall confined to higher mountain elevations with minor impacts continuing for area mountain passes. A mix of rain and snow is still possible, however, during the early morning hours across northern valley locations and the northern Idaho Panhandle. /aky

AVIATION. 00Z TAFS: A slow moving occluded front running north to south along the WA/OR coast at 00Z Friday will slowly track through the region through the next 24 hours to the ID/MT border by 00Z Saturday. A moist feed of Pacific moisture will feed widespread RA ahead of and along this front impacting most TAF sites with MVFR and IFR conditions. The KEAT and KMWH TAF sites will deteriorate to LIFR conditions in a very moist and calm boundary layer during occasional breaks in pcpn. The KLWS and KPUW TAF sites should remain MVFR during this period with southeasterly downslope flow ahead of the occlusion. /MJF

PRELIMINARY POINT TEMPS/POPS. Spokane 37 46 34 41 36 44 / 80 90 10 30 50 70 Coeur d'Alene 38 44 34 41 36 42 / 80 90 40 30 50 60 Pullman 37 46 33 42 37 44 / 60 80 10 20 50 70 Lewiston 41 51 37 47 41 50 / 50 80 10 20 50 70 Colville 36 43 33 41 34 42 / 90 90 0 50 50 60 Sandpoint 38 43 36 40 36 41 / 90 90 60 50 50 70 Kellogg 38 43 35 41 36 41 / 70 90 70 40 50 80 Moses Lake 37 51 34 45 36 49 / 90 40 10 40 60 50 Wenatchee 35 43 31 40 34 42 / 90 30 10 50 60 60 Omak 36 41 32 38 35 40 / 90 60 0 40 50 60

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 mi29 minE 710.00 miLight Rain39°F36°F89%1019.1 hPa
Lewiston, Lewiston-Nez Perce County Airport, ID24 mi86 minESE 1110.00 miLight Rain47°F39°F74%1018.5 hPa

Link to 5 minute data for KPUW

Wind History from PUW (wind in knots)
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Last 24hrSE9SE8E11E10E6E9E13E10E9E8SE11E13E12SE12E12SE8E13SE5E9E9E12SE8E10E7
1 day agoCalmNE43SE7SE3CalmSW4S5SW4S4CalmSE5CalmE6E6SE7SE6W3NE3E5E4E8E11E8
2 days agoE7E10E10E12E13E11E9E12E9E8E11E10E10E13SE4E4S9S7W13
G20
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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 (22,6,7,8)
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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 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.