Saturday, August17, 2019

Marine Weather and Tides
Ponderay, ID

Version 3.4
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at Allen

Sunrise 5:43AMSunset 7:58PM Saturday August 17, 2019 5:36 PM PDT (00:36 UTC) Moonrise 9:18PMMoonset 7:41AM Illumination 94% Phase: Waning Gibbous; Moon at 17 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 Ponderay, ID
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location: 48.36, -116.55     debug

Area Discussion for - Spokane, WA
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Fxus66 kotx 172337
area forecast discussion
national weather service spokane wa
437 pm pdt Sat aug 17 2019

Dry westerly flow will promote mostly clear skies and seasonal
temperatures Sunday. A warming trend with above average
temperatures is expected early next week as higher pressure
builds into the region. By mid-week, the passage of a cold
front will break down the ridge and result in a period of dry and
breezy conditions. Temperatures will remain near to below normal
late in the week with minimal precipitation chances.

Tonight through Monday morning: some showers continue along east
near the canadian border just north of okanogan county as
predominately dry, stable northwest upper flow begins to influence
conditions over much of the cwa. There remains just enough
instability over the northern cascades near the canadian border
to contribute to a slight risk of an isolated showers over the
higher terrain through the early evening. Otherwise the upper
flow will gradually become more zonal regionally through Sunday
morning before backing further from the southwest as the upper ridge
shifts and builds across the intermountain west through the
forecast period. This will lead to clearer skies across the inland
northwest with only an occasional wisp of upper cloudiness moving
west to east over the regional. Temperatures will remain mostly
near seasonal normals for mid august with evening breezes
continuing and gusting 20-25 mph through the cascade gaps that
will diminish gradually through the morning. Aky
Monday and Tuesday: a trough of low pressure currently digging through
alaska will take residence off the wa coast allowing high
pressure to amplify over the inland nw. This will result in a
warming and drying trend accompanied by light terrain driven
winds. Temperatures on Monday will rebound back into the 80s then
90s for Tuesday. The air mass will be quite dry yielding mostly
sunny skies.

Wednesday: the offshore wave will flatten the ridge on Wednesday and
usher a dry cold front through the region. There are some
differences with the timing of the front and forecast continued to
lean in the direction of the ensemble means which suggest an
evening timing. This will allow Wednesday to be just as warm as
Tuesday away from the cascades where cooler marine air will arrive
earlier. However, if trends with the deterministic models come to
fruition, we may be looking at an earlier frontal passage
Wednesday which could lead to slightly cooler temperatures than
currently predicted. My main concern with this front will be the
winds and increased fire danger. Given the current strength and
timing... It is not a slam dunk that fire weather highlights will
be necessary but following several days of hot dry weather... This
is something we will be closely monitoring with current thinking
of west southwest winds increasing to 10-20 mph and accompanied by
gusts near 25 mph.

Thursday through Saturday: dry westerly flow will become established
Thursday behind Wednesday's cold front. This will deliver sunny
skies, seasonal temperatures, and continued breezy conditions.

Another shortwave will swing through the region Friday bringing
kicking up the winds again and bringing a slight chance for
showers mainly near the cascades and into the northern mountains.

Behind the wave... Heights will begin to build over the eastern
pacific and place the inland NW under northwest flow aloft once
again. While this will be a dry and generally sunny weather
pattern, temperatures will once again cool back near to below
normal. Locally breezy conditions will remain possible on the
cascade east slopes and into portions of the columbia basin. Sb

00z tafs: northwest flow aloft continues to bring high level
clouds across the inland NW this evening, which should gradually
thin overnight. High based cumulus over the mountains should
dissipate early this evening. Westerly winds this evening should
decrease overnight with light and variable winds into Sunday
morning as high pressure builds over the region. Gap winds
will prevail near keat this evening. Rfox.

Preliminary point temps pops
Spokane 53 83 54 84 55 90 0 0 0 0 0 0
coeur d'alene 54 82 56 83 53 90 0 0 0 0 0 0
pullman 51 83 53 83 50 90 0 0 0 0 0 0
lewiston 59 92 61 91 60 98 0 0 0 0 0 0
colville 48 88 48 91 45 95 0 0 0 0 0 0
sandpoint 51 80 51 82 50 87 0 0 0 0 0 0
kellogg 55 79 56 80 56 87 0 0 0 0 0 0
moses lake 55 89 57 89 55 95 0 0 0 0 0 0
wenatchee 61 87 62 88 62 92 0 0 0 0 0 0
omak 57 87 59 89 58 92 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, ID4 mi81 minW 410.00 miOvercast73°F41°F31%1010.2 hPa

Link to 5 minute data for KSZT

Wind History from SZT (wind in knots)
Last 24hrW4CalmS4SW7SW5SW3SW5NW3CalmNE5NE4CalmCalmCalmNE9NE6SE4SE5E8SW3SW6SW6W4W6
1 day agoSW7W3W3CalmCalmCalmCalmCalmCalmCalmCalmCalmSW5SW4S8SW7W7SW8SW8S9SW6
2 days agoS4CalmCalmW3CalmW3CalmCalmCalmCalmCalmCalmCalmCalmCalmNE3CalmS4SE5E8NE3CalmW4SW7

Tide / Current Tables for
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Tide / Current Tables for
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Weather Map and Satellite Images
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GOES 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 (20,4,5,8)
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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 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 numerious of sources and is presented automatically. It is not checked for accuracy either by anyone at 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.