Saturday, February24, 2018 L-36.com


Marine Weather and Tides
Heron, MT

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 6:33AMSunset 5:27PM Saturday February 24, 2018 2:19 AM PST (10:19 UTC) Moonrise 12:35PMMoonset 3:12AM Illumination 67% 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 Heron, MT
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location: 47.98, -116     debug


Area Discussion for - Spokane, WA
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Fxus66 kotx 240550
afdotx
area forecast discussion
national weather service spokane wa
950 pm pst Fri feb 23 2018

Synopsis
A series of storm systems will impact the inland northwest this
weekend into early next week, with the potential for more snow,
breezy conditions and continued below normal temperatures for most
locations. The first round of snow starts tonight and continues
at times through Saturday. Another system will move into the
region on Sunday.

Discussion
Update: the first wave and the associated precipitation is moving
through. The back edge is nearly through the spokane area and
washington palouse, advancing toward idaho. However the next wave
will start to move in overnight into Saturday morning, renewing
the snow again. There has been reports of blowing and drifting
snow and in fact at our location and attempt at a measurement as
the end of the snow was met with some drifting which made that
measurement tricky. Overall the forecast is on track. Adjustments
made to put a break in the precipitation for the remainder of the
evening for some of the region, before it increases again. I also
increased winds a bit and reduced overnight lows, as some spots
were already near their previously forecast lows.

The thing of note is to be mindful for the blowing and drifting
snow around the spokane area and palouse, into the upper columbia
basin, especially away from the urban locations. Even if the snow
has stopped for the time being there can be some of the
blowing drifting snow.

All the winter weather advisories remain in place, even though
some areas are getting a break after this first round of
precipitation, more is on the way. J. Cote'

Aviation
06z tafs: one wave exits east this evening and another moves in
overnight and Saturday morning, before exiting. This will provide
periodic, more limited in coverage this evening before increasing
again after 09-11z and continuing to about 18-21z Saturday.

Coverage will be highest and the snow may moderate to heavy at
times, around geg sff coe puw, with a smaller risk elsewhere.

Expect MVFR LCL ifr conditions, including some ifr vis in the
heavier snow. The winds may also produce some blowing and drifting
snow over the northeast TAF sites, geg coe puw. Conditions start
to improve for Saturday afternoon. J. Cote'

Preliminary point temps pops
Spokane 19 33 27 39 21 35 60 80 20 60 20 10
coeur d'alene 21 33 24 38 20 35 70 90 40 90 20 20
pullman 21 34 27 38 23 34 70 90 40 90 50 20
lewiston 25 40 33 45 27 41 40 80 20 60 50 20
colville 20 35 25 40 17 37 50 50 20 70 20 10
sandpoint 20 33 25 37 21 34 80 70 40 90 30 20
kellogg 20 31 24 33 22 31 80 100 60 100 60 40
moses lake 22 41 32 48 23 44 10 20 10 20 10 0
wenatchee 21 39 33 44 23 43 10 30 30 60 20 0
omak 19 35 25 41 17 38 20 30 20 20 10 0

Otx watches warnings advisories
Id... Winter weather advisory until 4 pm pst Saturday for lewis and
southern nez perce counties-lewiston area.

Winter weather advisory until 1 pm pst Saturday for coeur
d'alene area-idaho palouse.

Winter weather advisory until 4 pm pst Saturday for central
panhandle mountains-northern panhandle.

Wa... Winter weather advisory until 4 pm pst Saturday for lower
garfield and asotin counties.

Winter weather advisory until 1 pm pst Saturday for spokane area-
washington palouse.

Winter weather advisory until 4 pm pst Saturday for northeast
blue mountains.

Winter weather advisory until 1 pm pst Saturday for northeast
mountains.



Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Sandpoint, Sandpoint Airport, ID37 mi24 minS 34.00 miLight Snow23°F21°F93%1016.6 hPa

Wind History from SZT (wind in knots)
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Last 24hrCalmCalmCalmCalmCalmCalmCalmCalmSE6SW7S7SW5SW5W8SW3SW4SW4SW5SW4SW4SW5SW4CalmCalm
1 day agoNE10
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N8N9N10NE11N10N6CalmCalmCalmCalm
2 days agoW3CalmCalmCalmCalmCalmCalmCalmCalmSE4SE6SE5SE8SE7E4CalmCalmCalmNE3CalmCalmNE8N9NE7

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 (5,6,7,8)
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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 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.