Tuesday, February20, 2018 L-36.com


Marine Weather and Tides
Moscow, 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 6:39AMSunset 5:23PM Tuesday February 20, 2018 7:33 AM PST (15:33 UTC) Moonrise 10:14AMMoonset 11:44PM Illumination 28% 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 Moscow, ID
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location: 46.73, -117     debug


Area Discussion for - Spokane, WA
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Fxus66 kotx 201230
afdotx
area forecast discussion
national weather service spokane wa
430 am pst Tue feb 20 2018

Synopsis
Cold and generally dry conditions will persist throughout the
week outside some passing light snow showers at times. A stronger
storm system will impact the region this weekend bringing the
next chance for appreciable snow.

Discussion
Today through Wednesday...

a deep trough is located over the western us leading to record
cold temperatures in the west and record warm temperatures in the
east. The arctic airmass is bringing the coldest temperatures of
the season with widespread single digits while some wind and
cloud free locations are reaching negative temperatures. The
slight surprise of the morning is a 5000 foot stratus deck that
has developed over eastern wa and portions of northern id. Under
this deck of clouds, temperatures are moderating a bit. For
example we watched the temperature drop to -5 f at the office here
west of spokane. Shortly after the clouds developed, the
temperature climbed back up to +6 f. Meanwhile at spokane intl the
clouds developed earlier and kept temperatures above the record
of 2 degrees. The clouds have not made it into coeur d'alene where
temperatures are currently -9. The NAM does the best of capturing
this increased moisture in the low to mid levels... Keeping it
around through the morning hours.

A weak disturbance currently over western bc is making its way
south toward wa this morning. This feature will bring increased
moisture in the form of clouds and the slight chance of flurries
this afternoon and evening. On the back side of the weak
disturbance, winds will turn northerly again albeit much weaker
than the Sunday night winds. Skies will also gradually clear out
by Wednesday resulting in a cool but overall pleasant day. Temperatures
will slowly moderate through the week... Each day "warming" by a
few degrees. Ab
Wednesday night through Monday: the cold keeps its grip over the
inland NW into early next week as a deep northerly flow persists
aloft. Shortwaves in the flow will bring occasional flurries or
light snow to the region. One of these features arrives Wednesday
night into Thursday with a band of mid to high level moisture
within an elongated trough. As instability increases, the air mass
will be quite dry with pwats not even exceeding 0.25". The
limited moisture may bring light snow chances to the higher
terrain, while the lower elevations may just see flurries as it
passes. Drier air and a reinforcing shot of northerly winds
arrives Thursday into Thursday night while temperatures slowly
moderate. After the passage of a shortwave ridge aloft Thursday
night into Friday, the next clipper system drops in from bc. A
warm front brushes along the canadian border by Friday evening
followed by a weak surface low on Saturday. Isentropic lift
increases with a renewed chance of precipitation. Snow levels will
stay remain low with snow being the likely precipitation type.

Afternoon temperatures warm enough to bring a rain snow mix to the
lower basin and the lc valley Saturday afternoon. This features
exits Saturday night with a decrease in precipitation. A
progressive NW flow prevails aloft, although 00z models are
grasping on timing of the features. As the GFS leans toward the
passage of another weak system early Sunday, the ECMWF shows a
slower but stronger wave arriving late Sunday into Monday.

Unsettled conditions will continue into early next week.

Meanwhile, temperatures continue their slow climb each day,
although remaining below normal through the period. Rfox.

Aviation
12z tafs: a stratus deck at about 5000 feet continued to develop
overnight over far eastern wa and northern id. Indications are
that this deck will remain through the early morning hours before
dissipating and being replaced by more mid level clouds. An
approaching weak system will bring widespread ceilings at 10k feet
with the chance of flurries over the northern mountains of wa and
id through the late afternoon and evening hours. Overall
anticipateVFR through the next 36 hours with the exception of
isolated MVFR in flurries. By Wednesday afternoon, expect skies
again to clear out and widespreadVFR conditions to prevail. Ab

Preliminary point temps pops
Spokane 23 8 26 11 28 12 0 0 0 10 10 10
coeur d'alene 22 3 26 10 27 11 0 10 0 10 10 10
pullman 21 8 26 13 27 14 0 10 0 10 10 10
lewiston 27 16 33 19 31 20 0 10 0 10 10 10
colville 23 5 27 9 30 11 0 20 0 10 10 0
sandpoint 20 6 24 8 27 12 10 20 0 10 10 10
kellogg 19 3 24 8 26 9 0 10 0 10 20 10
moses lake 32 14 34 17 36 18 0 0 0 10 10 0
wenatchee 30 14 31 16 35 18 0 20 0 10 10 10
omak 25 8 28 12 33 14 0 10 0 10 10 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
Pullman / Moscow Regional Airport, WA7 mi40 minE 1010.00 miPartly Cloudy8°F3°F80%1026.9 hPa
Lewiston, Lewiston-Nez Perce County Airport, ID24 mi37 minE 510.00 miMostly Cloudy13°F6°F74%1026.9 hPa

Wind History from PUW (wind in knots)
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Last 24hrSW10W10W9W12W12W11W12W10W8W4CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmE5NE5E7E10
1 day agoW13
G21
W13W11W5SW13SW13N8N6N10N8N6N8CalmN4CalmE10E5N3E8N6S6SW6SW8SW6
2 days agoSW8SW8S3S10S11S11SW17
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G23

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 (10,2,3,4)
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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.