Sunday, May26, 2019

Marine Weather and Tides
Manson, WA

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 5:10AMSunset 8:45PM Sunday May 26, 2019 8:05 AM PDT (15:05 UTC) Moonrise 1:11AMMoonset 11:25AM Illumination 49% Phase: Third Quarter Moon; Moon at 22 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 261144
area forecast discussion
national weather service spokane wa
444 am pdt Sun may 26 2019

Showers and a few thunderstorms will linger over the inland
northwest today before becoming limited to mainly the
mountains on memorial day. Windy conditions are also expected
Sunday over portions of north idaho, the northern mountains and
the columbia basin. Next week the region will warm up to above
normal. Afternoon showers and possible thunder over the idaho
panhandle and northern mountains. The rest of the region will
remain fairly dry.

This morning through Monday evening: a area of troughing drags
through the region from an upper level low moving south into
northern california. Generally, the high resolution model
guidance is in good agreement with the NAM handedly showing the
best progression on the pcpn field moving west across eastern
washington at this time. This was not the case earlier when model
guidance had difficulty handling the timing and placement of the
current batch of showers. Pops were increased slightly across the
eastern cascades to better verify the upslope of the moisture into
that region. Most shower activity should push west out of the cwa
by this early evening with the possibility of only a few light
showers lingering later along the higher elevations of the
cascades. Pcpn over most locations across eastern washington and
the northern panhandle will be less than a .10 inch, but some
locations over the cascades could see values ranging .25 to .50
inches. The upper trough should quickly fill as it continues west
through the cascades. A threat of thunderstorms is still a
possibility across the central id panhandle, the l-c valley, and
the camas prairie this afternoon into the early evening. Surface
cape will range from 800-1600 j kg for those locations. The is low
confidence, however, with regards to exact locations and
intensity of convection developing over the area. That said, there
remains the real possibility of some storms producing locally
heavy precipitation and small hail. A repeat Monday of this
thunderstorm activity is a real possibility as well, but should be
more isolated and of a lesser intensity.

The combination of higher pressure north over canada and a tightening
of the local pressure gradients, as will as terrain channeling of
winds through the purcell trench from sandpoint to coeur d'alene
will create the conditions for a sustained surface wind of 20-30
mph with gusts ranging 40-45 mph. Higher sustained wind and gusts
will occur at higher, more exposed, elevations as a 40-50kt low
level jet in and around 850mb continues to run from northern idaho
westward across northeastern washington through this morning into
the afternoon. 850mb winds of 25-35 kts across the columbia basin
and spokane area will bring breezy to locally windy conditions
today as daytime mixing develops later in the morning. Aky
Monday night... The upper level low will shift to the south, while
high pressure begins to nose in from the west Monday night.

Wraparound moisture will make it up as far north as the blue
mountains, the camas prairie, and up into southern shoshone
county. Combine the moisture with up-sloping flow and conditional
instability and the stage will be set for a good chance of showers
and thunderstorms through at least sunset. Precipitation should
come to an end before midnight. A quick tenth to two tenths could
fall as the thunderstorms move through the area. Further to the
north conditions will be dry with variable clouds.

Tuesday... Weak high pressure will build into the region on Tuesday.

Afternoon heating will create an unstable environment and with
lingering moisture some late afternoon showers and possible
thunderstorms will be possible, mainly along the cascade crest.

There will be a possibility for showers and thunderstorms over the
blue mountains as well but confidence is pretty low. Temperatures
will increase 4-5 degrees with afternoon highs in the 80s.

Wednesday and Thursday... Models are in good agreement that a short
wave will under cut the ridge Wednesday night and Thursday. There
isn't a lot moisture to work with as the wave moves through, but
afternoon convection will be possible. For Wednesday the chances
for showers is relatively low as the wave gets hung up near the
cascade crest. On Thursday afternoon the wave tracks across the
region and this will bring increased chances for afternoon showers
and thunderstorms, but again mainly in the mountains.

Temperatures will peak on Thursday with temperatures in the 80s.

Friday through Sunday... Westerly flow Friday and Saturday will
give way to a pacific storm system on Sunday. This is pretty far
out in the forecast and likely the timing will changes over the
next few days. For now the forecast will be mainly dry Friday and
Saturday with a low end chance for a few mountain showers on
Saturday. Sunday looks like there will be a better chance for
showers, at least for now. Temperatures will cool off a few
degrees Friday and Saturday, then show a 4-6 degree cool down on
Sunday if the cold front indeed comes through the area. Tobin

12z tafs: a number of disturbances pinwheeling east to west
over the aviation area will allow for clusters of showers and
possible thunderstorms through 02z. Greatest risk for thunder will
be vcnty kpuw klws however... Seeing some trends in the newer hrrr model
of thunder potential expanding further north toward kgeg-kmwh btwn
19-00z. This carries low confidence due to incr northeast winds
today. The strongest corridor of winds will be from kszt kcoe to grand
coulee which will feature potential for wind gusts of 30-45 mph. Northerly
winds will also be gusty around komk. Sb

Preliminary point temps pops
Spokane 67 48 75 50 80 52 70 10 10 10 0 0
coeur d'alene 66 48 75 49 80 52 70 0 10 0 0 0
pullman 69 45 70 48 75 51 60 20 50 20 10 0
lewiston 76 53 76 55 81 57 60 30 60 40 10 0
colville 73 40 83 43 89 46 70 10 0 0 0 0
sandpoint 64 48 75 50 80 52 60 10 10 0 0 0
kellogg 64 48 71 50 77 52 60 0 20 10 10 0
moses lake 74 51 82 53 87 55 90 20 0 10 0 0
wenatchee 67 53 79 57 84 57 100 20 10 10 0 0
omak 70 49 80 53 85 55 60 10 0 0 0 0

Otx watches warnings advisories
Id... Wind advisory until 8 pm pdt this evening for coeur d'alene area-
northern panhandle.

Wa... Wind advisory until 8 pm pdt this evening for northeast
mountains-okanogan highlands-spokane area-upper columbia

Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Wenatchee - Pangborn Memorial Airport, WA33 mi11 minW 910.00 miLight Rain51°F48°F89%1010.6 hPa

Wind History from EAT (wind in knots)
Last 24hrNW6N7CalmN4NW6W8W8W9W12W12NW12NW10NW7NW5NW7NW7NW6W8W11W10W10W10
1 day agoNW12N7NW10NW13NW10NW12NW15W12W11W13W11
2 days agoW8W6NW9W7W10NE6

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 (11,2,3,4)
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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.