Friday, July28, 2017 L-36.com


Marine Weather and Tides
Athol, 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 5:19AMSunset 8:27PM Friday July 28, 2017 6:06 AM PDT (13:06 UTC) Moonrise 11:29AMMoonset 11:22PM Illumination 24% Phase: Waxing Crescent; Moon at 5 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 281119
afdotx
area forecast discussion
national weather service spokane wa
419 am pdt Fri jul 28 2017

Synopsis
Expect very warm weather with light winds into the weekend.

There's a slight chance of thunderstorms from the blue mountains
to the camas prairie late today, but otherwise it will remain dry.

Hot weather will return for next week with some triple digits
temperatures likely.

Discussion
Satellite shows the diamond creek wildfire in the northern
cascades has been very active overnight. Could see more areas of
smoke in the surrounding areas this morning.

Today through Saturday night: more very warm and dry weather can
be expected across the inland northwest. A west-southwest flow
will be over the region with slight cooling from yesterday's dry
cold front. There is a stream of upper level moisture that is
moving across the region and will get hung up over southeast
washington and the southern panhandle. A weaker secondary impulse
in the upper flow will brush this area as instability increases
this afternoon. There is the potential for a thunderstorm over the
blue mountains or camas prairie late this afternoon into the early
evening, although both models indicate a weak cap in this area
similar to yesterday. Also these areas are on the northern
periphery of the moisture instability with a better chance of
activity forming to the southeast. The GFS has been trending
wetter under this scenario with actually measurable precipitation.

Think this is overdone with the scope of dry conditions across the
region the high cloud bases that develop from any possible
convection. Will lean toward mainly dry convection if it does
form. Otherwise expect temperatures similar if not a degree cooler
than yesterday with lighter west to southwest winds and less
gustiness. Patchy smoke may be an issue with the recent fires
especially in the late night and morning hours, especially across
north central washington into northeast washington. Downslope
northwest winds will increase across the cascades tonight. By
Saturday into Saturday night, slight ridging aloft develops with
an influx of more dry air. Any mid to high level moisture slips
south of the region. Low level temperatures will start to climb
with a couple degrees of warming under light winds. Rfox.

Sunday... Model consistency is good that a weak shortwave trough
and cold front will ripple rapidly eastward through the region.

This feature will be associated with little moisture but it will
bring a subtle cooling as well as an increase in winds. Suspect
the winds won't be quite as strong as what we saw yesterday as 850
mb speeds MAX out between 10-15 mph. Nonetheless with a packed
surface pressure gradients in the lee of the cascades we will
likely see breezy winds in the kittitas and wenatchee valleys and
spilling out into the western columbia basin. These conditions
will once again pair with relative humidity levels in the teens to
lower 20s and will likely lead to enhanced fire potential.

Monday through Thursday... Model consistency is good with the
overall synoptic pattern which features a deep low heading into
the gulf of alaska and a very strong upper level ridge building
northward from the southwest us. Each day we will see a gradual
warming trend as the center of the high moves toward southern
idaho or northern nevada. 500 mb heights over the inland NW climb
into an impressive 592-595dm range. This should result in
continued dry weather for most of the forecast area. It will also
push 850 mb temps above 27c by Wednesday and Thursday in eastern
washington. This 27c mark is important since it coincides with the
warmest temperatures we have seen this summer on july 7. If the
ec and GFS are correct we could see 850 mb temps top out just shy
of 30c on Thursday. This would certainly result in triple digit
heat across most of the forecast area and we have trended the
forecast accordingly. This heat will also combine with a very dry
air mass with relative humidity values possibly dipping into the
single digits. While our confidence in the temperature forecast is
rather good, things become much less confident in regards to
monsoonal moisture. The GFS suggests it could pivot north-
northeast around the periphery of the high and could skirt the se
corner of washington and into nc idaho. However the ec and
canadian models keep this moisture south of our forecast area. We
will follow this idea for now, but pops may need to be nudged
upward if model agreement grows. By Friday the upper level ridge
axis shifts east of our forecast area and we should see the
beginning of a cooling trend. Dry conditions will continue with
not much chance of measureable rain for the next 7 days. Fx

Aviation
12z tafs:VFR conditions will prevail at the TAF sites through the
period. Anticipate more high level clouds from klws to kpuw and
there is a small chance of -tsra toward the blue mountains and
camas prairie late today. Expect lighter and more terrain driven
winds. Wildfire smoke will persist in the northern valleys,
especially west of komk. Rfox.

Preliminary point temps pops
Spokane 89 62 93 63 92 62 0 0 0 0 0 0
coeur d'alene 89 56 92 57 91 56 0 0 0 0 0 0
pullman 89 58 92 58 90 56 10 0 0 0 0 0
lewiston 97 66 100 67 98 65 10 0 0 0 0 0
colville 91 53 94 55 94 54 0 0 0 0 0 0
sandpoint 88 49 90 50 90 50 0 0 0 0 0 0
kellogg 88 56 90 56 89 55 0 0 0 0 0 0
moses lake 93 57 96 59 96 58 0 0 0 0 0 0
wenatchee 92 63 94 66 94 65 0 0 0 0 0 0
omak 94 60 97 61 96 61 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
Coeur d'Alene Airport - Pappy Boyington Field, ID20 mi71 minSE 510.00 miFair61°F51°F70%1016.4 hPa
Sandpoint, Sandpoint Airport, ID22 mi72 minN 010.00 miFair52°F42°F72%1016.6 hPa

Wind History from COE (wind in knots)
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Last 24hrS8S7S10SE9S9SE10S11SE12S14
G18
S7SW7SW10W7SW4SW4N5S5CalmCalmCalm4E4SE5SE3
1 day agoNE7--NE7NE6CalmW5SW4W7W10W9W7W5S5SW4E3SE4NE3NE3CalmN3CalmNE4E3Calm
2 days agoNE5NE10NE8N4--36SW9SW10
G15
5W7W5W6W3E3E4E4NE5E4E5NE4NE4E5E6

Tide / Current Tables for
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Weather Map and Satellite Images
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Weather Map
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IR Satellite Image from GEOS
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GOES Local Image of PacificNorthwest    EDIT
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Wind Forecast for Spokane, WA (9,2,3,4)
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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.