Thursday, August17, 2017 L-36.com


Marine Weather and Tides
Oroville, WA

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 5:52AMSunset 8:11PM Thursday August 17, 2017 8:31 AM PDT (15:31 UTC) Moonrise 1:21AMMoonset 5:06PM Illumination 22% Phase: Waning Crescent; Moon at 25 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 Oroville, WA
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location: 49.16, -119.25     debug


Area Discussion for - Spokane, WA
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Fxus66 kotx 171158
afdotx
area forecast discussion
national weather service spokane wa
458 am pdt Thu aug 17 2017

Synopsis
Our warm and dry weather pattern is expected to persist through at
least the early part of next week. Breezy and dry winds on Friday
will raise concerns for wildfires. Our weather on Monday should be
favorable for good views of the eclipse with mainly clear skies.

Discussion
Today through Friday night... A dry westerly flow will persist
resulting in mostly clear skies and near normal temperatures. Main
issues continue to be smoke fire weather related. An active brush
fire... Monument hill... Northeast of quincy will produce areas of
smoke this morning across the columbia basin with possibly some
smoke reaching the spokane coeur d'alene area. Smoke from bc fires
as well as diamond creek may also be drawn south into the
northern valleys this morning. Then this afternoon a weak short
wave ridge moves overhead with winds shifting to the southwest at
5-10 mph over most of the area. On Friday an upper trough swings
into british columbia sending a dry cold front through the area in
the evening. This will lead to breezy pre-frontal southwest winds
over much of the area Friday afternoon... With locally windy
conditions near the cascades developing by early Friday evening
with the front passage. This combined with low relative humidity
for the wenatchee area has prompted a fire weather watch. The
western columbia basin (waterville plateau, ephrata areas) and
kittitas valley (ellensburg) may also come close but for now will
limit watch to the wenatchee area where confidence is highest of
critical wind rh thresholds being met. Jw
Saturday and Sunday: the weather for the weekend will feature near
average temperatures, relatively light winds, and mostly clear
skies. A broad 500mb trough over western canada will establish a
dry westerly flow over the pacific northwest Saturday and Sunday. A
push of north or northwest winds on Saturday will have the
potential to produce smoky skies for our counties along the
canadian border. British columbia continues to be a large source
of wildfire smoke, and 10 to 15 mph winds down the okanogan valley
on Saturday morning have the potential to bring smoke down from
b.C. As north winds lessen Saturday afternoon into Sunday, sources
of smoke closer to home will become our sources for smoke. Fires
like diamond peak (north of twisp), bridge creek (north of
keller), north fork hughes (near priest lake), and norse peak
(west of yakima). For these fires, warm and dry winds Friday will
have the potential to increase fire activity which may contribute
to issues with smoke over the weekend into Monday.

Monday (eclipse day): an upper level high pressure ridge will
amplify over the pacific northwest on Monday. With the exception
of a few high cirrus clouds, views of the eclipse should be
unobstructed for residents of oregon, north idaho, and eastern
washington. Surface pressure gradients will weaken under our
strengthening ridge. Smoke dispersion Monday may become an issue
depending on local fire activity.

Tuesday and Wednesday: at this time, it looks like Tue and wed
will be the warmest days of next week. Widespread 90s will likely
return to the inland northwest. We will be closely monitoring the
potential influx of monsoonal moisture from the south which could
mean the chance for showers and thunderstorms by mid to late week.

Gkoch

Aviation
12z tafs: mostly clear skies and terrain driven winds generally
less than 10 mph are expected at the TAF sites through 12z Friday.

Patchy wildfire smoke will continue across the region butVFR
conditions are expected for all TAF sites. Jw

Preliminary point temps pops
Spokane 84 59 86 58 82 58 0 0 0 0 0 0
coeur d'alene 84 54 86 54 81 54 0 0 0 0 0 0
pullman 82 53 85 55 81 54 0 0 0 0 0 0
lewiston 90 61 93 62 89 62 0 0 0 0 0 0
colville 87 52 88 52 85 51 0 0 0 0 0 0
sandpoint 83 48 84 49 82 48 0 0 0 0 0 0
kellogg 80 52 83 52 80 52 0 0 0 0 0 0
moses lake 89 55 93 58 87 55 0 0 0 0 0 0
wenatchee 89 63 91 63 86 62 0 0 0 0 0 0
omak 92 59 92 59 87 58 0 0 0 0 0 0

Otx watches warnings advisories
Id... None.

Wa... Fire weather watch from Friday afternoon through Friday evening
for east washington central cascade valleys (zone 677).



Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Omak Airport, WA50 mi39 minNNW 710.00 miFair69°F45°F42%1016.6 hPa

Wind History from OMK (wind in knots)
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Last 24hrN9N8Calm56S7SE11S9
G17
SW13
G21
W10NW9NW8N9NW8N11N10N11N11NW7NW8NW9NW9NW7N7
1 day agoN10N9N7SE5S6S6SW7S5SW8SW8S4S6S7S7W4NW7W7NW5W8N7N6N8NW5N7
2 days agoN10N8N9
G18
N9N8N64NW6SW7SW4CalmCalmCalmCalmCalmNW55NW7N8N8N8N10N9N10

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 (11,2,3,4)
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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.