Wednesday, April8, 2020
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Marine Weather and Tides
Dover, 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 6:08AMSunset 7:29PM Wednesday April 8, 2020 4:04 AM PDT (11:04 UTC) Moonrise 8:32PMMoonset 6:53AM 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 Dover, ID
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location: 48.27, -116.6     debug


Area Discussion for - Spokane, WA
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FXUS66 KOTX 080906 AFDOTX

Area Forecast Discussion National Weather Service Spokane WA 206 AM PDT Wed Apr 8 2020

SYNOPSIS. Wednesday through Friday will be dry and warm with an abundance of sunshine. Afternoon temperatures on Thursday and Friday will be well into the 60s with a few spots in the Columbia Basin climbing above 70. The arrival of a strong cold front Friday night into Saturday is expected to bring strong north winds, cooler temperatures, and high mountain snow to the Inland Northwest.

DISCUSSION.

. VERY WINDY AND DRY DOWN THE OKANOGAN VALLEY ON SATURDAY .

Wednesday and Thursday: High pressure will strengthen over the region over the next few days promoting a stable atmosphere and mild temperatures. Afternoon temperatures for the next few days will be warming into the 60s with a few low 70s possible in the lower Columbia Basin. Winds will be light with speeds of 10 mph or less. There will be a light northerly gradient Wednesday morning but look for winds to become more diurnally, terrain influenced Wednesday afternoon and Thursday.

Friday and Friday night: High pressure will amplify off the coast and nose into the Gulf of AK. In return, a shortwave dropping into Northern BC will begin to take a more south/southwesterly track and flatten our resident ridge Friday afternoon before dropping into the region Friday night. The air mass will remain quite mild into Friday afternoon and a subtle increase in westerly winds is expected throughout the day. The enhanced mixing and continued warmth of the midlevels suggest Friday will be our warmest day of the week with many valley locations warming into the upper 60s to lower 70s. Clouds will increase in the afternoon and evening but showers will be limited to the Idaho Panhandle and Northern Mountains Friday night. West to northwest winds will become gusty through the Cascade Gaps Friday evening and night as the shortwave moves into the region and a surface low deepens over the Columbia Basin. Southwest winds drawn into the low will also will impact the foothills of the Blue Mountains and WA Palouse. Wind gusts of 20-30 mph will be possible in each of these locations overnight. Prior to sunrise, northerly winds will begin to channel down the Okanogan Valley at 10-20 mph with stronger winds expected for Saturday and discussed further below. /sb

Saturday: A vigorous shortwave trof of low pressure will drop down out of British Columbia on the front side of an amplified ridge of high pressure in the Gulf of Alaska. This pattern is very favorable for strong winds down the Okanogan Valley and spreading out across the western basin. There will be a drastic air mass change with strong cold air advection accompanying the front. Source origins being polar continental will mean that moisture will be severely lacking. In fact, dew point temperatures will absolutely crash behind the front for Saturday afternoon. P-wats will only start out at around 0.40 inches over the Idaho Panhandle. Synoptic lift, however, due to good jet dynamics and strong potential vorticity advection over, will squeeze out every little bit of the moisture to precipitate out over the Panhandle; chances of precipitation are likely, especially near the Montana border. Snow is expected at Lookout Pass, but with an afternoon arrival time, it's unlikely that snow will have travel impacts. Snow levels will also crash to valley floors, but moisture will wring out pretty quickly and may not have much left for snow accumulations in the valleys.

What will be left in the wake of the frontal passage will be a strong pressure gradient as low pressure rapidly spins up over over eastern Wyoming and Colorado in the lee of the Rockies. Much of the west will likely see breezy to windy conditions. The Okanogan Valley is traditionally susceptible to strong winds though as the cold air funnels down between the higher terrain. Wind gusts of between 50-60 mph will be possible and solidly within advisory criteria. Impacts will include the potential for tree damage and power outages. Drought conditions across portions of central Washington, including the Okanogan Valley and Waterville Plateau will mean that blowing dust will be a potential concern; oh, and not to mention the potential for fire spread in grassy fuels that haven't had their spring green up yet.

Sunday through Wednesday: Strong ridging of higher pressure in the eastern Pacific will keep the region under northerly flow. The Inland Northwest will be dry, and, after colder than average temperatures for the weekend, we will see those temperatures bounce back to around normal by the middle part of next week. The dry air mass and cold temperatures moving in over the weekend will mean that overnight lows will drop back down to or below freezing. This will be after temperatures climb to above normal heading into the weekend. Just keep that in mind if planning on doing any planting with the weather warming up. All locations will see the potential for freezing temperatures or frost by Sunday and Monday mornings. /SVH

AVIATION. 06Z TAFS: High pressure aloft will promote VFR conditions the next 24 hours. Winds will be lighter with speeds of 10kts or less. /sb

PRELIMINARY POINT TEMPS/POPS. Spokane 62 35 67 40 69 39 / 0 0 0 0 0 10 Coeur d'Alene 61 35 65 39 67 40 / 0 0 0 0 0 10 Pullman 58 35 65 40 67 40 / 0 0 0 0 0 10 Lewiston 68 41 71 45 73 46 / 0 0 0 0 0 0 Colville 69 34 71 38 73 37 / 0 0 0 0 0 10 Sandpoint 59 34 61 39 63 36 / 0 0 0 0 0 30 Kellogg 57 34 62 40 64 38 / 0 0 0 0 0 30 Moses Lake 70 36 75 42 76 41 / 0 0 0 0 0 0 Wenatchee 69 42 73 45 75 44 / 0 0 0 0 0 0 Omak 69 38 73 42 74 41 / 0 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
Sandpoint, Sandpoint Airport, ID3 mi70 minNE 310.00 miFair32°F26°F80%1021 hPa

Link to 5 minute data for KSZT

Wind History from SZT (wind in knots)
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1 day agoSW3CalmCalmCalmNE3CalmE5E6E6S5SW9SW9
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2 days agoNE4NE9N8NE6NE8NE6NE6NE6NE7NE5CalmCalmSE4CalmCalmNE3NE4NE5N4N5NE3CalmCalmCalm

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.