Monday, March25, 2019

Marine Weather and Tides
Moscow, ID

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 6:39AMSunset 7:08PM Monday March 25, 2019 4:49 PM PDT (23:49 UTC) Moonrise 12:00AMMoonset 9:36AM Illumination 75% Phase: Waning Gibbous; Moon at 20 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 Moscow, ID
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location: 46.73, -117     debug

Area Discussion for - Spokane, WA
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Fxus66 kotx 252121
area forecast discussion
national weather service spokane wa
221 pm pdt Mon mar 25 2019

A fast moving storm system will bring rain and snow showers to
the inland northwest tonight. Winds will be breezy at times
overnight and into Tuesday. The active weather pattern continues
with yet another system bringing rain and high mountain snow
Wednesday night and Thursday. Thereafter we will see spring like
temperatures and mainly mountain showers through next weekend.

Tonight and Tuesday... Little change in the overall forecast for
the next 24 hours. A deep low pressure system out at 140w will
eject another short wave disturbance off the parent low and that
wave will track through the forecast tonight and be mostly out of
the area before sunrise Tuesday morning. East to southeast winds
this afternoon will keep the precipitation up against the cascades
this evening, but as a cold front moves into the region the
precipitation will track east across the forecast area. Rain and
snow showers will then linger in the northeast mountains and the
idaho panhandle through the day Tuesday. Precipitation amounts
will be pretty light and range from just a few hundredths for the
columbia basin, palouse and up into the spokane-coeur d'alene
region, to around a tenth for the mountains. That easterly
component of the winds will give the cascades anywhere from around
a quarter inch up to a half inch of liquid. Snow levels 5000-5500
feet this afternoon will drop down to 2500-3000 feet behind the
front. So this storm system will once again be mainly rain with
high elevation snow. The higher elevations of the cascades may see
3-5 inches, with 1-3 across the panhandle mountains. As mentioned
above showers will linger over the region through the day on
Tuesday. But these will be quite hit or miss. 500 mb temperatures
will drop to -30c by Tuesday afternoon destabilizing the
atmosphere. All indications are that a dry slot will move in
quickly behind the front and this should inhibit any deep
convection. Easterly winds this afternoon are expected to shift to
the southwest and increase with the frontal passage overnight.

Expect southwest winds 10 to 20 mph with gusts 25 to 30 mph for
the eastern basin, palouse, west plans and some of the higher
terrain near the blue mountains. With the front moving through at
night the timing for stronger winds mixing to the surface is not
favorable, but locally wind gust 30 to 35 mph will be quite

Tuesday night... The short wave disturbance will clear the area by
Tuesday afternoon and with the drier air in place Tuesday night
will be mostly clear with temperatures in the upper 20s to mid 30s
which is a few degrees on the cool side of normal. Tobin
Wednesday through Thursday: quiet weather is expected to continue
through much of Wednesday as a shortwave ridge builds overhead.

Expect increasing clouds during the day as the next weather system
approaches from the south. North to northeast winds are also
expected to increase out ahead of this system, with gusty
conditions possible across portions of the idaho panhandle and the
okanogan valley down into the columbia basin.

While there is broad agreement on the timing of precipitation
arrival, longer range models continue to struggle with how strong
and how far north this system will carry precipitation. The gfs
and ECMWF are more bullish bringing precipitation north to the
canadian border, whereas the NAM and canadian models bring
precipitation roughly to the i-90 corridor. This system is also
likely to bring colder canadian air southward: light snow
accumulations will be possible across the higher cascade and idaho
mountain passes.

Friday through Monday: a few showers may persist into Friday as a
weak closed low moves across the region. Largely warmer and drier
weather is then expected for the weekend as high pressure builds.

Look for temperatures to warm up to a few degrees above normal
during this timeframe. The general consensus is for unsettled
weather to return early next week, but confidence is low in the


18z tafs: fog and stratus at the TAF sites has now mixed with
conditionsVFR. Mid and high clouds will be on the increase
through the day as the next fast moving weather system approaches
the pac nw. Expect a quick shot of light rain starting around
02-03z at keat kmwh and closer to 09-10z at klws kpuw kcoe ksff kgeg.

Rain amounts will be light with only a few hundredths expected.

Cigs vsby will remainVFR. Southwest winds will be on the increase
with FROPA with gusts 15-20 mph and locally 25-30 mph Tuesday
morning 08-12z. There may some localized llws ahead of the front
before the winds can mix down to the surface. Tobin

Preliminary point temps pops
Spokane 38 54 31 59 36 52 30 10 0 20 40 50
coeur d'alene 37 53 29 56 35 51 40 30 0 10 40 50
pullman 36 51 31 54 34 48 40 20 0 20 50 50
lewiston 43 57 39 58 40 54 30 30 10 30 50 60
colville 35 59 26 62 30 55 40 40 0 10 30 40
sandpoint 36 53 31 54 33 49 50 50 0 10 30 50
kellogg 37 52 31 54 36 49 50 50 0 20 50 60
moses lake 36 60 33 60 36 54 40 0 0 10 50 50
wenatchee 36 60 33 53 37 50 70 10 0 10 50 50
omak 37 56 30 55 35 53 60 30 0 10 30 50

Otx watches warnings advisories
Id... None.

Wa... None.

Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Pullman / Moscow Regional Airport, WA7 mi57 minE 1010.00 miFair54°F35°F49%1015.7 hPa
Lewiston, Lewiston-Nez Perce County Airport, ID24 mi54 minENE 1110.00 miFair61°F37°F41%1013.8 hPa

Wind History from PUW (wind in knots)
Last 24hrW7W3CalmE5E8E8E11E12E11E10E10E13E11E14E11E14
1 day agoNW5NW4NW5NW3N3CalmN3CalmCalmCalmCalmCalmCalmCalmCalmW3W7W7W8W8W7W8W9W9
2 days agoS4CalmCalmCalmCalmCalmCalmW3CalmW6SW7CalmCalmCalmE4NE4CalmE4SW7SW733W3NW5

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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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 (19,4,5,8)
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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.