Wednesday, July17, 2019

Marine Weather and Tides
Spokane Valley, WA

Version 3.4
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 Allen

Sunrise 5:07AMSunset 8:43PM Wednesday July 17, 2019 3:41 AM PDT (10:41 UTC) Moonrise 9:30PMMoonset 5:45AM Illumination 100% Phase: Full Moon; Moon at 15 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 Spokane Valley, WA
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location: 47.64, -117.19     debug

Area Discussion for - Spokane, WA
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Fxus66 kotx 170949
area forecast discussion
national weather service spokane wa
249 am pdt Wed jul 17 2019

The next system is moving into the region bringing an increase
in clouds. Widespread breezy to windy conditions are expected
Wednesday into Thursday. Spotty showers will continue in the
northern mountains through the work week. Expect a cold morning
Friday before hot and dry weather returns by Sunday into early
next week.

Gusty winds and low rh values Thursday to elevate fire weather

Colder morning lows Friday morning...

today through early Friday morning: the next 2 days will focus on
an unseasonably very strong upper level jet. A closed low will
move into canada late today, with most of the strong dynamics
remaining north of the border. However, a 150kt jet (which is
about 10 kts stronger than what models were showing 2 days ago)
will push into the region starting this morning. It will nose into
the cascades this morning and then sit over northern and central
wa northern id this afternoon through most of Thursday before it
starts to exit sag south late Thursday night early Friday morning.

Breezy to at times windy conditions are expected across the
region today and Thursday. Today's winds will focus more in the
cascades, wenatchee area, waterville plateau into the columbia
basin, palouse and spokane area. Thursday's winds will be across
the columbia basin, spokane area and palouse as well as most of
the idaho panhandle. Widespread gusts 25 to 35 mph is expected.

Brief locally higher gusts is quite possible... 40 to 50 mph.

This will raise some fire weather concerns, especially on Thursday
as the relative humidity values drop into the upper teens to mid
20s for most of the wa valleys. However most fuels are not
cured dried out enough to warrant highlights, as of this morning.

We do have the potential to see sprinkles or light rain showers
today across the cascades and northern wa id. Have added a slight
chance of thunderstorms along the canadian border in NE wa given
models showing some instability.

Temperatures will continue to be about 5-10 degrees below average
for this time of the year. Highs in the valleys will be in the 70s
to low 80s, and lows will be in the upper 40s to mid 50s. Of
particular note will be the unseasonably cool temperatures by
Friday morning. Very dry air moving in coupled with mostly clear
skies will lead to what will feel like cold temperatures across
the cascades, and the colder valleys of northern wa and id. Lows
in the lower 40s... With mid to upper 30s in the cascade mountains
is expected. Nisbet
Friday through Tuesday:
cool morning temperatures can be expected under a low pressure system
into Saturday morning. Forecast lows in the cascades for instance
show higher terrain lows below 40 degrees. Areas such as the
pacific crest trail and campgrounds in the northern cascade mountains
should be ready for another chilly night Friday into Saturday morning.

Friday's potential instability will produce showers in the northern
mountains. At this point there is not a strong lifting focus to
produce widespread thunderstorms but there will be a possibility
of thunder near the canadian border for late afternoon early
evening thunder. Winds will be much weaker Friday onward.

The GFS is the outlier as other deterministic models and ensembles
say Saturday will be mostly dry as high pressure builds into the
area starting our warm-up for the weekend into next week. So we
are drying the forecast Saturday onward and temperatures will finally
be above normal come Monday as a more summer like pattern and high
pressure ridge axis set up to the east over montana with south
to southwest flow aloft. Temperatures will be well into the 90s
the beginning of next week. There are some hints in the deterministic
models that moisture from the south will ride up the west side of the
ridge which can produce some thunderstorms. Right now confidence is
generally low that this will occur but bears watching over the coming
days. Tc

06z tafs: this evening will start off quiet, with mostly clear
to partly cloudy skies. However another system pushes in
overnight into Wednesday, thickening clouds again and increasing
the threat of showers throughout the day Wednesday. In the morning
it may be little more than sprinkles, but more hit-and-miss
showers are possible by Tuesday afternoon, after 18-20z. The
system will also lead to broader increase in winds, with gusts in
the 20-30kt range possible. Cote'

Preliminary point temps pops
Spokane 76 54 75 47 74 48 10 10 0 0 0 0
coeur d'alene 74 53 74 46 74 47 10 20 0 0 0 0
pullman 75 52 74 45 72 45 0 0 0 0 0 0
lewiston 86 61 82 53 80 54 0 0 0 0 0 0
colville 78 44 76 40 76 40 20 20 0 0 10 10
sandpoint 70 51 72 45 71 45 30 40 20 0 0 0
kellogg 69 55 70 50 70 49 10 40 20 0 0 0
moses lake 82 55 81 48 80 51 0 0 0 0 0 0
wenatchee 77 58 76 53 77 55 10 10 0 0 0 0
omak 80 53 78 50 78 52 10 10 0 0 10 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
Spokane, Felts Field, WA7 mi3.8 hrsNNE 310.00 miFair60°F53°F78%1011.3 hPa
Spokane, Spokane International Airport, WA18 mi49 minSE 410.00 miOvercast60°F51°F72%1010.9 hPa
Coeur d'Alene Airport - Pappy Boyington Field, ID22 mi46 minN 010.00 miFair56°F51°F84%1013.2 hPa
Fairchild Air Force Base, WA24 mi1.7 hrsE 310.00 miFair56°F54°F92%1011.1 hPa

Wind History from SFF (wind in knots)
Last 24hrCalmCalmNE3NE3CalmCalmNE3NE4CalmCalmNE3CalmN34SE8E6NE4SE6SE6CalmN3CalmN3NE3
1 day agoCalmNE4NE4NE4NE4CalmCalmCalmN3CalmE3CalmSW6N3CalmNE3CalmSE43SE5CalmNE3CalmCalm
2 days agoNE4CalmNE3Calm--S8SW6SW8

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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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 (6,6,7,8)
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Ground Weather Radar Station Spokane, WA
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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 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 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.