Friday, January22, 2021
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L-36.com

Marine Weather and Tides
Sandpoint, ID

Version 3.4
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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 7:22AMSunset 4:34PM Friday January 22, 2021 8:59 AM PST (16:59 UTC) Moonrise 12:48PMMoonset 2:58AM Illumination 69% Phase: Waxing Gibbous; Moon at 9 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 Sandpoint, ID
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location: 48.28, -116.54     debug


Area Discussion for - Spokane, WA
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FXUS66 KOTX 221132 AFDOTX

Area Forecast Discussion National Weather Service Spokane WA 332 AM PST Fri Jan 22 2021

SYNOPSIS. Breezy northerly winds will usher dry, cooler weather into the region today. Saturday will start off quite chilly, but most areas will experience sunny skies and light winds for much of the day. Another chance for snow will arrive Sunday into Monday, this time with most locations seeing some light snow. Additional snow chances will come in around the middle of next week.

DISCUSSION. Today: Northerly winds continue to draw a cool and much drier continental air mass into the region. Dewpoints across our northern mountains have already dipped in the single digits and a few of our sheltered mountain valleys like Republic and Priest Lake experienced lows below 10F this morning. Winds of 10-20 mph with gusts up to 30 mph are keeping our temperatures warmer for communities down the Okanogan Valley, Waterville Plateau, and Western Columbia but these winds are creating brisk wind chills between 10 and 15F. We are also seeing local wind gusts near 25 mph channeling down the Purcell Trench through Sandpoint and Rathdrum which is expected to continue into midday. For the remainder of the Columbia Basin, West Plains, and along the north- south extension of Lake Roosevelt . north to northeast winds of 5-15 mph are anticipated with weaker gusts, closer to 20 mph.

Clouds will linger over the far southeast today with a few light showers persisting over the Blue Mountains and Camas Prairie. Snow activity will be extremely light with little to no accumulation. The remainder of the Inland NW will get to experience crisp temperatures and an abundance of sunshine!

Saturday: Dry northwest flow will remain over the region aloft with the persistent band of clouds over the southeast expected to clear out. Aside from low stratus or banks of fog forming around the L-C Valley and Palouse, should be another cool and sunny day across the Inland NW. Morning temperatures will start off in the single digits and teens and only rebound into the upper 20s to mid 30s. We will not be dealing with much wind however as surface winds slowly transition from north to south and speeds of around 5 mph.

Sunday: Models have been rather consistent advertising an area of low pressure tracking toward NW WA on Sunday and have not deviated from this message. The midlevel low is expected to reach Forks, WA late Sunday afternoon. Moisture moving into the region ahead of the low will bring increasing cloudiness through the day with a chance for light snow to spread into the Cascades and portions of Central Washington prior to sunset. /sb

Sunday night to Thursday: The area will continue to be dominated by a long-wave trough and systems riding through it, bringing occasional snow chances with temperatures near to slightly below normal. Sunday night into Monday an upper shortwave drops down the Pacific Coast, while a cold front/deformation axis leans into our region to increase snow across the region. Models disagree over whether some of the energy with the shortwave slips in to enhance the snow a little or if that energy stays south. The most recent 00Z GFS (deterministic and ensemble) is in the camp that keeps that shortwave energy south, while the other models tend to bring at least some energy in. This would impact how much snow fall will occur. Generally amounts still look light at 0.5-1.5 inches, but there could be localized higher amounts if one of those shortwave slips by. Snow chances will be highest Sunday night, then gradually wane Monday into Monday evening with the highest risk retreating to the mountains. So this system continues to mean the potential for travel impacts Sunday night into the Monday morning commute.

Thereafter from Tuesday to Thursday models are in a bit better agreement than this time yesterday, with the continued active pattern. Tuesday a trough lingering in the region will keep some threat of snow going around the mountains. Amounts look light, if any, at less than an inch. Then between Tuesday night and Thursday the next organized system moves in. Chances first start to rise again near the Cascades and far western basin Tuesday night into early Wednesday, as a deep low drops down the Pacific Northwest coast and shortwave pivots inland. Then the snow threat expands across the region again through Wednesday. The details of how quickly that snow moves in and how long it persists into Thursday starts to get hazy, as models start to disagree on those finer details and run-to-run consistency is not great. At this time it does not look like heavy snow event, but it will still bring the next potential for impacts from snow. /Cote'

AVIATION. 12Z TAFS: The problems areas for Friday morning will be around Pullman and Lewiston where areas of low stratus and fog are present. Drier air working into the region from the north will bring some improvement to vis/ceilings this morning but confidence is low on exact timing. In fact, we are seeing some lower clouds expand northward just southeast of Spokane and Cd'A. Thinking ceilings with this activity reside around 2-3K ft AGL. Gusty north winds will impact Omak, Ephrata, Sandpoint, and Coeur D Alene Going into Friday night. focus will remain around Pullman for another bank of low clouds developing and slowly spreading northward into southern Spokane County early Sat morning. If clearing is efficient Fri nt, this could be IFR/LIFR fog but other guidance suggest it could just evolve into marginal VFR ceilings at or around 1500-2000 ft AGL. /sb


PRELIMINARY POINT TEMPS/POPS. Spokane 34 17 31 21 32 25 / 0 0 0 0 20 40 Coeur d'Alene 35 17 31 19 32 25 / 0 0 0 0 10 30 Pullman 36 22 32 22 35 27 / 10 0 0 0 10 30 Lewiston 40 28 38 25 40 31 / 10 0 0 0 10 20 Colville 32 10 28 15 29 21 / 0 0 0 0 10 30 Sandpoint 31 16 28 19 29 24 / 0 0 0 0 10 30 Kellogg 35 20 31 20 32 26 / 0 0 0 0 10 30 Moses Lake 39 20 36 22 35 26 / 0 0 0 0 20 40 Wenatchee 36 21 34 24 31 25 / 0 0 0 0 30 40 Omak 34 16 31 20 31 25 / 0 0 0 0 20 30

OTX WATCHES/WARNINGS/ADVISORIES. ID . None. WA . None.




Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Sandpoint, Sandpoint Airport, ID2 mi64 minNE 10 G 1810.00 miFair23°F18°F80%1018.3 hPa

Link to 5 minute data for KSZT

Wind History from SZT (wind in knots)
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1 day agoCalmCalmSE3S6S8SW4S5S4S4CalmCalmCalmCalmCalmCalmCalmCalmNE6NE7NE6N6NE11N8N9
2 days agoCalmSW3SW3S8S7S9SW5SW5SW4SW6SW7SW8S6SW6S4E3S3SW4SW5CalmCalmCalmCalmCalm

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.
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Other links: Northern Pacific     Contential US     Full GOES-East
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Disclaimer:
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.