Tuesday, September26, 2017 L-36.com


Marine Weather and Tides
Ponderay, ID

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 6:39AMSunset 6:36PM Tuesday September 26, 2017 5:54 AM PDT (12:54 UTC) Moonrise 1:10PMMoonset 10:27PM Illumination 33% Phase: Waxing Crescent; Moon at 6 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 261120
afdotx
area forecast discussion
national weather service spokane wa
420 am pdt Tue sep 26 2017

Synopsis
Drier and warmer weather will return to the inland northwest today
through Friday under mild high pressure. Thursday will feel a bit
like summer with afternoon temperatures in the upper 70s to low
80s. Temperatures will fall dramatically Friday night into
Saturday with the arrival of a strong cold front. The weekend will
be chilly, breezy, and showery.

Discussion
Today through Wednesday night: positively tilted ridge shows
amplification and transition to a more neutral north to south non
tilt through this interval. This amplification and reorientation of
the ridge axis should push the path for any clutter of moisture
and or disturbances fluxing through it further away to the north and
thus result in not only a dry forecast but one with not much in the
way of significant cloud cover. Forecast temperatures on the warm
side of what would be considered normal for this time of year.

Pelatti
Thursday and Friday: little has changed regarding the forecast for
thu and fri. Afternoon temperatures on Thu will climb into the
upper 70s to low 80s under clear skies. On Fri high clouds will be
on the increase in the afternoon ahead of an approaching cold
front. There may be enough cloud cover to hinder warming in
central washington and highs for places like wenatchee, omak, and
chelan have been lowered a couple of degrees into the mid 70s.

Prefrontal south winds will also increase Fri afternoon across the
columbia basin and open wheat country of the palouse and west
plains. Look for 10 to 15 mph with late day gusts up to 20 mph.

Friday night through Sunday: the forecast for the weekend has been
changed considerably. Precipitation chances have been increased
fri night through sun. The evening models have trended deeper,
wetter, and cooler.

The most significant swath of rain will likely occur Sat morning
along the cold front. The central and southern idaho panhandle
could receive a quarter inch of rain with localized amounts up to
a half inch. Behind the cold front, Saturday afternoon promises to
be cool, breezy, and showery. If the evening model runs verify, a
500mb cold pool (-21c to -25c) will track across oregon and
washington yielding showers with snow levels falling into the 5500
to 6500 ft range. Afternoon temperatures in the upper 50s to mid
60s will be accompanied by 10 to 20 mph winds with gusts up to 25
mph across the columbia basin, palouse, and west plains.

There may be fewer showers Sunday over central washington as the
cold 500mb trough migrates into montana, but the GFS and ecmwf
suggest wrap around rain and high mountain snow for the idaho
panhandle and possibly the eastern third of washington. Afternoon
temperatures will again be below average with more breezy west
winds.

Monday: the medium range models diverge into a mess of different
solutions by Mon and tue. The ECMWF and canadian share some
similarities early next week with the arrival of another wet
frontal system. The GFS trends drier with a cool northerly flow.

With little to hang our hat on, we kept a chance of showers in the
forecast with below average temps. Gkoch

Aviation
12z tafs: clouds should continue to decrease as the ridge of high
pressure over the aviation area shows amplification. Some late
night and early morning fog possible producing spotty MVFR
conditions primarily north of kgeg, ksff and kcoe. Otherwise after
the morning when the fog dissipatesVFR conditions will prevail.

Pelatti

Preliminary point temps pops
Spokane 70 50 75 51 79 51 0 0 0 0 0 0
coeur d'alene 70 46 74 48 78 48 0 0 0 0 0 0
pullman 69 46 75 48 78 49 0 0 0 0 0 0
lewiston 75 50 78 52 81 52 0 0 0 0 0 0
colville 73 44 78 45 82 46 0 0 0 0 0 0
sandpoint 68 42 73 43 76 44 0 0 0 0 0 0
kellogg 67 45 72 46 76 48 0 0 0 0 0 0
moses lake 76 47 80 48 82 48 0 0 0 0 0 0
wenatchee 75 53 79 54 80 54 0 0 0 0 0 0
omak 77 48 79 49 81 49 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 mi60 minN 010.00 miOvercast43°F42°F100%1020.7 hPa

Wind History from SZT (wind in knots)
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Last 24hrCalmCalmCalmN3CalmS3SW7SW7SW5SW7SW4SW4SW3CalmCalmCalmCalmCalmCalmCalmCalmW3CalmCalm
1 day agoCalmCalmCalmCalmSE3S5SE3E8SE6E6E3CalmW3CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm
2 days agoCalmCalmS3S3S4SE5E7E5S6E4SW3SW3SW5SW3CalmCalmCalmCalmCalmCalmCalmCalmCalmCalm

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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Weather Map
wmap_P
IR Satellite Image from GEOS
west_satellite

GOES Local Image of PacificNorthwest    EDIT
Geos

Wind Forecast for Spokane, WA (8,2,3,4)
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Ground Weather Radar Station Spokane, WA
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weather_mapweather_map weather_map

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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 numerious 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.