Wednesday, March20, 2019

Marine Weather and Tides
Winthrop, 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 7:04AMSunset 7:13PM Tuesday March 19, 2019 10:29 PM PDT (05:29 UTC) Moonrise 4:37PMMoonset 5:51AM Illumination 99% Phase: Waxing Gibbous; Moon at 14 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 Winthrop, WA
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location: 48.47, -120.18     debug

Area Discussion for - Spokane, WA
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Fxus66 kotx 192333
area forecast discussion
national weather service spokane wa
433 pm pdt Tue mar 19 2019

Dry and mild conditions will continue through Friday. Clouds and
the chance for showers will increase late Friday and persist into
the weekend. Temperatures over the weekend into early next week
will be pretty close to average with most locations climbing into
the 50s.

Tonight through Thursday: the high pressure and dry conditions
will continue for this period. No major weather impacts are
expected. This will be the warmest stretch of days for the year
so far as highs creep up into the upper 50s and low 60s for the
region. The lows will be in the near freezing range. The warmer
temps are expected to melt low land snow and create rises on area
small streams and creeks. As of now, any rises are expected to be
below action stage.

Friday: the omega block that was over region will shift east as a
shortwave trough presses into the region from the west. The
models are fairly consistent with the the timing of the system.

The areas of precip differ. The GFS is brining showers over the
cascades by Friday afternoon, while the ECMWF is keeping the
precip out the inland northwest until later in the evening.

Increasing cloud cover will keep the highs a few degrees cooler
then the previous days highs with most locations reaching into the
50s. Jdc
Friday night through Sunday: precipitation chances will be
increasing Friday night into Saturday as a weak low pressure
trough moves inland. Rain amounts this weekend look to be light
and showery. Forcing with the weak trough is not impressive. The
best forcing associated with the upper level jet is expected to be
over central california and the great basin. Ensemble mean
precipitation amounts suggest a tenth or two across the idaho
panhandle and mountains of northeast washington with lesser
amounts across the columbia basin, palouse and west plains. Light
rain amounts are good news. So far, the melt of our late season
snow across the lowlands has been gradual with minimal impacts. At
this time, the rain expected this weekend will not make any
significant contribution to snow that is melting.

Monday and Tuesday: our forecast for Monday remains dry under the
influence of a short-lived high pressure ridge. There is a good
chance that showery weather will return Monday night into Tuesday
as a large upper low settles off the coast. We will be watching
moisture wrapping around this large upper low closely. At this
time, it looks like the most significant rains will be focused
over california. Temperatures early next week look to be at or
slightly above average. By early next week, a good deal of the
snow across the palouse, spokane area, and upper columbia basin
will be melted. And at this time, the pattern early next week
isn't raising any red flags for excessive rain. Gkoch

So far the melting of our lowland snowpack has been gradual with
warm days, light winds, and chilly nights. Some of our creeks and
streams are starting to respond to runoff with small to moderate
rises. Streams fed by runoff from the palouse are often first to
respond and we are seeing some rises on hangman creek (south of
spokane), paradise creek (moscow), and the palouse river near
potlatch. Since these creeks were running lower than normal last
week, there has been ample capacity for the increased runoff. We
expect more water to enter creeks and small streams over the next
36 to 48 hours as lowland snow over the palouse and west plains
ripens and the rate of snowmelt increases. Some minor field
flooding may occur across the palouse which is a fairly frequent
occurrence late in the winter. So far, we haven't seen gauges
rise in far north idaho, northeast washington or along the
cascades. It may take more time for the deeper snow at higher
elevations to ripen, melt and enter our creeks and streams.

The hydrologic outlook on our web page was allowed to expire this
morning. It served its purpose raising awareness of potential
hydrologic hazards as our lowland snow melts. If any specific
flooding hazards develop in upcoming days, advisories or warnings
will be issued to highlight the impacts. Overall, this dry weather
pattern is just what we needed to begin releasing runoff without
causing flooding. At this time, we don't see any big rain events
coming the next 7 to 10 days which is also good news. Gkoch

00z tafs:VFR conditions with clear skies and light winds is
expected for at least the next 24 hours.

Preliminary point temps pops
Spokane 31 61 31 61 31 59 0 0 0 0 0 0
coeur d'alene 32 62 33 62 30 57 0 0 0 0 0 0
pullman 30 59 31 59 31 57 0 0 0 0 0 0
lewiston 34 65 35 63 33 61 0 0 0 0 0 0
colville 29 63 30 62 29 59 0 0 0 0 0 0
sandpoint 34 61 34 62 32 57 0 0 0 0 0 0
kellogg 33 61 34 63 32 57 0 0 0 0 0 0
moses lake 30 64 34 63 34 62 0 0 0 0 0 0
wenatchee 33 57 34 58 35 56 0 0 0 0 0 10
omak 34 61 35 61 34 58 0 0 0 0 0 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
Omak Airport, WA35 mi37 minWNW 410.00 miFair39°F28°F67%1022.2 hPa

Wind History from OMK (wind in knots)
Last 24hrNW3N7N3N9N9N8N12N11N6N11N8N8N9N8NE4E3NE3S43S3W3W3N4W4
1 day agoNW4Calm45NW5CalmN5N11N12N14N11N13N11N13N12N10N7N6N3CalmS3NW6NW4Calm
2 days agoNW4NW3CalmCalmNW3N3N3NW5N9NE7N9N8N9N7N10N7CalmS6S6S4S4CalmN4Calm

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

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Wind Forecast for Spokane, WA (1,6,7,8)
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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.