Thursday, January23, 2020
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Marine Weather and Tides
Oroville, WA

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 7:39AMSunset 4:40PM Thursday January 23, 2020 4:05 AM PST (12:05 UTC) Moonrise 8:06AMMoonset 4:27PM Illumination 3% Phase: Waning Crescent; Moon at 28 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 Oroville, WA
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location: 49.16, -119.25     debug


Area Discussion for - Spokane, WA
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FXUS66 KOTX 231202 AFDOTX

Area Forecast Discussion National Weather Service Spokane WA 402 AM 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. Today through Friday: A moist southwest flow will continue through tonight before the trough axis swings inland Friday when the main focus of precipitation will shift into the Idaho Panhandle. But until then models continue to show moist isentropic ascent across the region with rising snow levels to 5000-6500 feet this afternoon and remaining near these levels through the night. Snow levels will be lower this morning over northern Washington and the Idaho Panhandle with areas near the Canadian border still showing snow levels down to the valley floors but will be rising to 4000-5000 feet later this morning. In and around the Methow Valley a warm layer aloft around 800mb hovering near the freezing mark could result in a wintry mix of snow and freezing rain this morning. Pockets of freezing rain are also possible south of Lake Chelan. A Winter Weather Advisory has been extended for this area through 11 am.

The southwest flow will favor the highest precipitation totals through Friday along the Cascade crest with 2-3 inches of liquid precipitation forecast, and across NE Washington into the North Idaho Panhandle with a half inch to an inch with locally higher amounts. The current snow pack across the region should absorb much of this rain but local ponding of water on area roadways is possible. JW

After the passage of a shortwave Friday evening, mountain showers linger with drier conditions across the Columbia Basin with breezy evening winds. Temperatures and snow levels cool with some patchy freezing fog possible in the sheltered northern valleys.

By Saturday, the upper level flow becomes westerly and a weak wave ripples through the region with light snow across the northern mountains and a rain snow mix for the valleys and lowlands. As this feature exits, a stronger and wetter system arrives from the southwest, spreading precipitation across the Inland NW. Timing looks to be Saturday night into Sunday. Snow levels start on the valley floors, but then peak at 3K to 5K ft by Sunday afternoon with the potential for another round of significant snow for the Cascades. Breezy southwest winds develop across the Columbia Basin Sunday afternoon and evening. The latest rounds of mild temperatures with rain and high mountain snow will increase some snowmelt, although current snow pack looks to be able to absorb the bulk of it. Hydrographs of area rivers show rises by this weekend especially for the Palouse Basin, but confidence of flooding remains low.

For Monday through Wednesday, more weather disturbances track through the Inland NW with a strong jet guiding a series of Pacific disturbances. Confidence is growing on the timing of these disturbances, but still will remain the crux of the extended forecast. Temperatures and snow levels remain on the warm side of seasonal levels. Mountains will receive more rounds of snow, although the precipitation in the valleys will be dependent on the time of day with a better chance of snow during the overnight and early morning hours. Models show signs of another atmospheric river by mid week with a return of mild and wet weather. /rfox.

AVIATION.

12Z TAFS: A long and deep fetch of subtropical Pacific moisture will be well directed into the forecast area and enhancing into mostly rain over a slow moving warm front running from KBLI to KLWS through the next 24 hours. The saturated air mass and nearly continuous precipitation will promote MVFR and IFR ceilings and vis at most TAF sites through 12Z Friday. Only KLWS may benefit from some downsloping off the Blue Mountains for VFR conditions. KEAT and KMWH are sheltered in the lee of the Cascades. This sheltering may limit further rain but also promote IFR or LIFR conditions in fog and stratus in a saturated and largely calm boundary layer. JW

PRELIMINARY POINT TEMPS/POPS. Spokane 42 37 46 33 43 35 / 100 90 90 10 50 60 Coeur d'Alene 41 37 44 34 42 35 / 100 80 100 20 60 40 Pullman 43 37 46 34 42 38 / 80 50 90 0 40 30 Lewiston 49 40 51 37 48 40 / 50 40 80 0 40 30 Colville 39 37 43 33 42 35 / 90 100 90 10 60 50 Sandpoint 39 37 43 35 41 35 / 100 100 100 50 70 40 Kellogg 40 36 43 34 42 34 / 100 70 100 60 60 40 Moses Lake 44 39 51 36 48 38 / 60 90 40 10 40 60 Wenatchee 37 35 43 35 40 35 / 60 90 30 20 60 70 Omak 38 34 41 34 40 34 / 70 100 50 10 50 60

OTX WATCHES/WARNINGS/ADVISORIES. ID . None. WA . Winter Weather Advisory until 11 AM PST this morning for East Slopes Northern Cascades.




Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure

Link to 5 minute data for KOMK

Wind History from OMK (wind in knots)
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Last 24hrS3CalmCalmCalmCalmCalmCalmCalmCalmSE3S3CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmSW3S3SE3
1 day agoCalmCalmCalmCalmCalmW3S3SE4SW5S4S7S7S5S8S9SW7S5S6S7S7SW7CalmSE5S3
2 days agoCalmW3CalmCalmSE3SW4CalmSW4CalmS4CalmCalmCalmCalmCalmCalmCalmW4CalmCalmCalmCalmCalmCalm

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 (7,2,3,4)
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Ground Weather Radar Station Spokane, WA
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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.