Wednesday, September19, 2018 L-36.com


Marine Weather and Tides
Troy, MT

Version 3.4
What's New / NOTES
9/17/2018 XTide broke when 1and1 "upgraded" my server. It has been esculated. I am sorry for the problem.

Sunrise 6:29AMSunset 6:51PM Wednesday September 19, 2018 1:29 PM PDT (20:29 UTC) Moonrise 4:32PMMoonset 12:45AM Illumination 74% Phase: Waxing Gibbous; Moon at 10 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 Troy, MT
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Area Discussion for - Spokane, WA
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Fxus66 kotx 191815
afdotx
area forecast discussion
national weather service spokane wa
1115 am pdt Wed sep 19 2018

Synopsis
Dry and cool weather is expected through Wednesday. Also expect
chilly morning temperatures with patchy frost possible in sheltered
valleys. A wetter storm system will bring increasing rain chances
late in the week. Conditions remain cool over the weekend with a
chance for at least mountain showers.

Discussion
Today through Thursday: a mid level wave over vancouver island
this morning will slowly move east... Reaching the cascades late
this afternoon and then the idaho panhandle on Thursday. This
feature has weak lift and limited moisture... But enough to warrant
a chance of afternoon showers over the north cascades today and
then over the idaho panhandle Thursday. Could even see a stray
thunderstorm over the north cascades today near the canadian
border... And over extreme NE wa N idaho panhandle Thursday.

Although forecast shows only very limited threat of this with spc
12 hour calibrated thunder probabilities only at 10-20%. Jw
Thursday night through Tuesday... The first part of the extended
forecast including late this week and through the weekend will be
impacted by the approach and transit of an upper level trough
through the region. Thursday night and Friday a warm front will
develop over the western reaches of the forecast area appending
off of an offshore surface low pressure system. The parent trough
will still be well offshore but in a favorable position to begin
directing a fairly deep feed of pacific moisture into the west
side and over the cascades. This will promote increasing chances
of rain and high mountain snow over the cascades east slopes and
the mountains near the canadian border. Friday night and Saturday
the offshore trough will move into the coast... With the surface
low ejecting into vancouver isle but pushing the remnants of a
surface cold occluded front through the forecast area west to east
with a more general chance of rain showers across the basin
Friday night along and immediately behind the front. This cold
front has been displaying a weakening trend over previous runs and
this does not look like a significant precipitation event for the
area.

Saturday and Sunday the trough will transit the region but
weakening as it does... So while showers will probably occur they
will be concentrated across the higher terrain around the basin
with lingering showers over the idaho panhandle into Monday.

From Monday onward it looks like models are in decent agreement
in depicting a rather dry but cool northerly flow across the
region in the wake of the trough passage. Other than a small
chance of showers over the orographically favorable idaho
panhandle the forecast looks dry for the beginning of the next
work week. Temperatures through out this period will remain on the
cool side of normal... With the potential for pockets of frost in
the northern valleys Monday and Tuesday morning as skies clear out
as the system exits to the east. Fugazzi

Aviation
12z tafs: a weak disturbance or two are expected to pass over the
aviation area over the next 24 hours bringing varying degrees of
mainly middle and high cloud with some afternoon and early evening
cumulus possibly mix in but this should not keepVFR conditions
from prevailing. Pelatti

Preliminary point temps pops
Spokane 69 46 65 47 69 50 0 0 10 10 10 40
coeur d'alene 69 44 64 44 68 49 0 0 30 10 10 40
pullman 67 42 64 43 70 49 0 0 10 0 10 10
lewiston 73 47 71 48 77 54 0 0 10 0 0 10
colville 71 43 67 44 66 44 0 10 20 20 40 30
sandpoint 67 40 62 41 64 45 0 0 40 20 30 50
kellogg 66 40 59 41 65 46 0 10 40 10 10 40
moses lake 74 45 71 46 74 48 0 0 0 10 10 10
wenatchee 72 52 70 51 72 52 0 0 10 20 20 20
omak 73 47 70 48 70 48 0 10 10 40 30 30

Otx watches warnings advisories
Id... None.

Wa... None.



Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Boundary County Airport, ID30 mi60 minNNE 410.00 miFair57°F37°F48%1016.9 hPa

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Last 24hrCalmCalmN4N7NW6N5CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmN4N4CalmN3
1 day agoCalmCalmCalmCalmN3N7CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmNW8CalmSW4Calm
2 days agoS7S6W6CalmCalmSE4NE5CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmE3E3CalmCalmCalmCalm

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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wmap_P
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.
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Wind Forecast for Spokane, WA (16,3,4,5)
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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.