Monday, March19, 2018

Marine Weather and Tides
Manson, WA

Version 3.4
What's New / NOTES
3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.
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.

Sunrise 7:02AMSunset 7:15PM Monday March 19, 2018 7:23 PM PDT (02:23 UTC) Moonrise 7:29AMMoonset 8:49PM Illumination 11% Phase: Waxing Crescent; Moon at 3 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 Manson, WA
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location: 47.88, -120.08     debug

Area Discussion for - Spokane, WA
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Fxus66 kotx 192347
area forecast discussion
national weather service spokane wa
447 pm pdt Mon mar 19 2018

Tuesday will be the first official day of spring and will feature
the mildest and driest weather of the week. A vigorous frontal
system is expected to bring widespread precipitation and windy
weather Wednesday night into Thursday followed by chilly and
showery conditions Friday into the weekend.

Updated aviation discussion.

Tonight through Tuesday night: the shower activity this afternoon
over the northeast and southeast portion of the region will wane
with sunset. Clouds will then thin out overnight with fog expected
for the sheltered valleys in northeast wa and the id panhandle.

The inland northwest will be between systems on Tuesday with a
mostly dry forecast and typical mid march temperatures. Svh
Wednesday through Thursday night: an upper level trough will move
down the british columbia coast Wednesday. A cutoff low off the
california coast will get absorbed into the trough and bring a
period of wet weather to the inland northwest. Wednesday we could
see showers as a weather disturbance moves south to north in the
southerly flow. Wednesday night as the trough nears the coast
widespread rain and mountain snow will spread into central
washington and then into eastern wa by Thursday morning. Snow
levels will remain high 4k-6k ft. Thursday will remain wet with
similar snow levels. It isn't until late Thursday afternoon that
snow levels will start to lower across the cascades as the cold
front begins to move through. The cold front will move through
Thursday evening and night. The chance of precipitation will
remain high through the evening and then decrease through the
overnight period. Snow levels will lower down to the valley floors
by early Friday morning, but most of the precipitation will have
come to an end.

Precipitation amounts Wed night-thur will range from two tenths
of an inch south of royal city to over an inch in the northern
cascades. Most valley locations in the palouse, spokane coe,
highway 2 corridor will see about a half an inch of rain. The ne
wa valleys could see 0.75. Currently models are showing the
okanogan valley and methow valley as the big winners with anywhere
from 0.75 to almost an inch of rain. Will need to keep an eye on
area rivers as many will see rises.

Winds will increase Thursday ahead of the cold front. Southerly
winds will start in the morning across the palouse and then
spread into the columbia basin and spokane area by the afternoon.

Winds 10-20 mph is expected. By late afternoon early evening the
winds will shift to the southwest and increase slightly... To 15-25
mph and become gusty. Have increased our evening gust potential
to 35 mph with perhaps an isolated 40 mph gust. Winds will
decrease overnight.

Friday through Monday: the trough will move inland over the
pacific northwest through Saturday night. This will bring a period
of showers given the cold 500 mb temps and instability across the
region. There is no one place that has a better chance of seeing
a shower over another location. Showers will likely contain
graupel. There could be an isolated afternoon lightning strike,
but confidence isn't high to add that to the forecast yet. By
Sunday models begin to differ on their solutions for the region.

Still looks unsettled, and so have at least a slight chance of
showers most locations. Nisbet

00z tafs: all TAF sites forecastVFR through Tuesday afternoon. A
weak upper level disturbance will move across the northeastern
portion of the region tonight. It is responsible for a line of
convective snow showers stretching across the northeast mountains
into the northern panhandle. Afternoon heating will result in
developing cumulus across the spokane coeur d'alene areas with
isolated showers by late afternoon. There is a small possibility
for lighting with the stronger cells over the higher terrain.

Skies will begin to clear out overnight. Another disturbance
moving across northeast oregon will bring vcty showers to klws
until about 02z. Strong radiational cooling will result in the
possibility for fog in the mountain valleys, especially in the
northeast mountains and idaho panhandle. Little confidence if more
sheltered TAF sites such as ksff, kcoe and klws will see any fog
Tuesday morning. Svh

Preliminary point temps pops
Spokane 31 51 31 52 40 52 20 10 0 20 60 80
coeur d'alene 29 48 30 50 37 50 20 10 0 30 40 80
pullman 30 50 35 53 42 54 0 0 0 30 40 90
lewiston 32 56 37 60 45 61 20 10 10 20 30 60
colville 29 52 30 53 38 52 20 10 10 20 60 80
sandpoint 31 46 30 48 36 48 20 10 10 30 40 80
kellogg 28 45 30 48 36 50 20 10 10 40 30 80
moses lake 26 59 30 59 42 58 0 0 0 10 70 70
wenatchee 32 56 33 54 40 53 0 0 0 20 80 80
omak 31 53 34 53 40 52 10 10 10 30 90 100

Otx watches warnings advisories
Id... None.

Wa... None.

Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Wenatchee - Pangborn Memorial Airport, WA33 mi29 minE 310.00 miFair52°F25°F35%1018.2 hPa

Wind History from EAT (wind in knots)
Last 24hrW9NW12NW11NW9NW6NW5NW5W6W5NW4NW4W5W54W4NW74CalmE3----S6SE7E3
1 day agoNW11W10W10W10NW11W12NW7NW10NW9NW8NW9NW6NW5W6NW11NW14NW10NW5W6W6SW5SW4W11W6
2 days agoNE3CalmNE4NW3NW4W6W43W9NW3W6NW7W8W7W6W6W7W9W5W10NW14W9W3W12

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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Spokane, WA (22,6,7,8)
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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.