Friday, July19, 2019 L-36.com


Marine Weather and Tides
Athol, ID

Version 3.4
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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 L-36.com. Allen

Sunrise 5:07AMSunset 8:39PM Friday July 19, 2019 3:44 PM PDT (22:44 UTC) Moonrise 10:28PMMoonset 7:45AM Illumination 92% Phase: Waning Gibbous; Moon at 18 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 Athol city, ID
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location: 47.98, -116.56     debug


Area Discussion for - Spokane, WA
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Fxus66 kotx 192146
afdotx
area forecast discussion
national weather service spokane wa
246 pm pdt Fri jul 19 2019

Synopsis
The upcoming weekend will be dry with warming temperatures. Much
warmer weather will arrive Monday and Tuesday with widespread
highs in the 90s. A cold front passage will moderate temperatures
back to near normal later in the week, but will bring with it
breezy winds and dry air raising fire weather concerns.

Discussion
Tonight through Sunday: high pressure will begin to strengthen over
the region delivering dry conditions and warming temperatures.

This is well agreed upon amongst the forecast models and
confidence is above normal. Saturday will feature light, terrain
driven winds with temperatures rebounding into the low to mid 80s.

By Sunday, we will see a slight increase in east to northeast
winds and continued warming of the air mass. The strongest winds
will occur Sunday morning with speeds on the order of 10 to 15 mph
down the purcell trench from sandpoint to rathdrum in north idaho
and along the i-90 corridor toward ritzville. Wind speeds will
slowly decline through the afternoon and switch to more of an
east southeast direction. High temperatures on Sunday will climb
into the upper 80s to low 90s. Should be a great weekend for
outdoor activities! Sb
Monday and Tuesday... Model guidance is in pretty good agreement
with a ridge of high pressure over the rocky mtns and a deep low
pressure system off the b.C. Coast. This puts the region in a warm
south to southwest flow. High confidence on much warmer
temperatures as heights build over the region. Afternoon highs
will be well into the 90s both days which is 5-10 degrees above
normal. This weather pattern is good for showers and thunderstorm
development. South-southwest flow will allow deeper moisture to
advect into the region and with the additional moisture the
atmosphere to destabilize. Model guidance is also picking up on a
couple of weak disturbances moving through the region late in the
day Monday and again Tuesday and that would increase forcing over
the region. The wrench in the gears right now is that the moisture
comes through very high in the atmosphere. While the pattern is
good for nocturnal thunderstorms with very little rain reaching
the surface it could also result in just some mid-level clouds
over the region. The warm temperatures will also allow wildland
fuels to dry out further and could set the stage for fire starts.

However, this is far from certain. We still have a few days to
figure this out and we will monitor conditions closely.

The upper level low will drag a cold front through the region
Wednesday morning and it should be east into montana by late
afternoon. Right now it looks like this front will kick off
morning showers for the northern mountains. Temperatures will cool
10-12 degrees between Tuesday and Wednesday and this temperatures
change will normally result in gusty winds Wednesday afternoon
and Wednesday evening.

Thursday and Friday... A weak ridge of high pressure will follow
the exiting low pressure system Thursday and Friday. This will
once again allow temperatures to warm again into the mid 80s to
mid 90s for a warming and drying trend. Tobin

Aviation
18z tafs: some moisture remains along the canadian border and
will bring a chance for showers and possible thunderstorms through
sunset. No precipitation is expected at any of the TAF sites. The
surface pressure gradient has been decreasing through the morning
and this is expected to continue. Some gusty southwest winds can
be expected for vcnty kpuw kcoe kgeg through 00z with gusts to
20kt likely. Otherwise winds will be on the decrease through the
afternoon.VFR conditons at all TAF through Saturday morning.

Tobin.

Preliminary point temps pops
Spokane 49 81 52 89 60 93 0 0 0 0 0 0
coeur d'alene 48 80 51 89 59 93 0 0 0 0 0 0
pullman 45 78 48 88 57 91 0 0 0 0 0 10
lewiston 53 86 56 96 66 98 0 0 0 0 0 10
colville 42 85 45 92 51 96 10 0 0 0 0 10
sandpoint 47 77 50 86 56 90 10 0 0 0 0 0
kellogg 49 77 53 87 61 91 0 0 0 0 0 0
moses lake 50 86 56 94 64 97 0 0 0 0 0 0
wenatchee 55 84 61 91 67 94 0 0 0 0 0 10
omak 53 84 58 91 63 96 0 0 0 0 0 10

Otx watches warnings advisories
Id... None.

Wa... None.



Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Coeur d'Alene Airport - Pappy Boyington Field, ID20 mi48 minSW 1410.00 miA Few Clouds72°F37°F29%1017.5 hPa
Sandpoint, Sandpoint Airport, ID22 mi69 minN 010.00 miLight Rain59°F51°F77%1015.9 hPa

Wind History from COE (wind in knots)
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Last 24hrSW19
G25
W20
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G21
W9
G16
SW4SW3CalmSW6S7S7SW3W4SW53NW44S7SW6S86W11
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1 day agoS6S7S5W6W3CalmCalmS7S8S5S7S53SW5W5W4W12SW10
G18
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SW21
G25
SW15
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G31
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G24
2 days agoN3S6CalmS5S5N4NE5E5E3CalmNE5CalmCalmSE6S7S6S7S9S10S14
G18
S14S12SW14
G21
W8

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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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Spokane, WA (18,4,5,8)
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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.