Sunday, March26, 2017

Marine Weather and Tides
Milton-Freewater, OR

Version 3.4
What's New / NOTES
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.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 6:40AMSunset 7:16PM Sunday March 26, 2017 11:53 AM PDT (18:53 UTC) Moonrise 6:14AMMoonset 5:49PM Illumination 1% Phase: Waning Crescent; Moon at 29 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 Milton-Freewater, OR
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location: 45.94, -118.37     debug

Area Discussion for - Pendleton, OR
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Fxus66 kpdt 261734 aaa
area forecast discussion... Update
national weather service pendleton or
1033 am pdt Sun mar 26 2017
updated aviation discussion

Short term Today and tonight... A weather system is moving into
the region this morning. A warm front will lift through the forecast
area today followed by a cold front this evening and overnight.

Light rain is already falling in central oregon and expect this to
spread across the forecast area through the day. Snow levels will
rise today but could see a little light snowfall in portions of
central oregon this morning as well as along the east slopes of the
cascades before snow levels rise. Higher elevations of the blue
mountains will also see some light snow accumulations. The cold
front will will move over the cascades early this evening. Models
are indicating that a shortwave moving up the front will help to
enhance precipitation from central oregon to northeast oregon from
this evening and overnight so have kept chance of precipitation high
for these areas ahead of the front. Behind the front precipitation
will decrease rapidly.

Aviation 18z tafs...VFR and tempo MVFR conditions are expected to
prevail at all terminals through the day today. Conditions should
improve toVFR for most terminals overnight and into Monday morning.

Rain showers will be moving through the area today and into this
evening... The showers could be moderate at times, especially this
afternoon, as the atmosphere will again have some marginal
instability. Thunderstorms are not expected. CIGS will mainly range
from about 4k to 8k feet agl in the rain showers, but could
occasionally drop to between 2.5k to 4k feet agl in any heavier
showers... Vis could also occasionally drop to 3-5sm in these
showers. Cigs/vis should tend to lift and improve tonight as the
main axis of precipitation moves east. Expect sct to bkn clouds
mainly between 5k to 10k feet agl overnight and into Monday morning.

If skies clear enough overnight, there is the potential for some
localized pockets of shallow fog to form, due to the wet ground
conditions. Not enough confidence on where, when or if this fog will
form yet to include in the tafs. Winds will remain light through the
period... AOB 15kts for most locations. 77

Prev discussion /issued 300 am pdt Sun mar 26 2017/
short term... Today through Tuesday... An upper level trough has
moved into idaho tonight and a brief transitory ridge is over the
region early this morning. This is leading to the current dry
conditions. This will not last long as a system is approaching the
pacific northwest coast. The warm front of this system will cross
the cascades later this morning and bring a chance of showers to the
cascades and central oregon in the morning and a chance of showers
across the area in the afternoon. The cold front will arrive Sunday
evening and showers will be likely before starting to taper off late
in the evening with just a slight chance of showers in the columbia
basin and north central oregon overnight. Precipitation will be
mainly rain with snow levels rising from around 4500 feet this
morning to around 5500-6000 feet this evening before dropping down
to 3500 to 4000 feet behind the front by tomorrow morning.

Precipitation amounts will be around a tenth of an inch in the
columbia basin, up to a quarter of an inch in the rest of the lower
elevations and up to a half inch in the mountains. Snow amounts in
the mountains will be up to 3 inches in the higher mountain passes.

On Monday as the front departs, the associated trough will cross the
area. Instability with the front will keep a chance of rain and snow
showers in the mountains in the afternoon and a slight chance of
rain showers in the lower elevations. Snow levels will remain around
3500-4000 feet and precipitation amounts will be less than a tenth
of an inch. Monday night and Tuesday a ridge will be over the area
for mainly dry conditions. Another system will be trying to cross
the cascades, but a chance of light rain and showers will be
confined to the cascades crest region. Temperatures will be in the
mid 40s to mid 50s today then warm Monday and Tuesday to the mid to
upper 50s in the columbia basin and in the mid 40s to mid 50s
elsewhere. Perry
long term... Tuesday night through Sunday night... The latest gfs
model run is more in line now with the ECMWF and canadian models for
the extended period... Especially this coming mid week. The main
concern during the extended period will be a couple of weather
systems bringing more rain to the cwa. While these will mostly be
just spring time rain events with little hazardous impacts it may
cause rivers and streams to rise again. However at this time rivers
are not expected to reach flood stage anymore. There are a few that
will be at bankfull which will be covered with river statements.

Tuesday night and Wednesday a weather system will move into the
region with a period of rain followed by mainly mountain rain
showers behind the system by Wednesday afternoon, caused by upslope.

Snow levels will be quite high so there will be no concern with
winter weather at this time. Conditions will dry out by Friday and
then it will stay mostly dry until next Sunday night. However that
far out the models do not agree well with each other anymore, and
therefore only made minor changes to the previous forecast until the
forecast becomes more certain. It may be breezy at times...

especially on the ridge tops and open grassy terrain. Temperatures
will be near normal through the extended period. 88

Preliminary point temps/pops
Pdt 53 40 55 38 / 60 80 40 10
alw 56 43 57 43 / 60 70 40 20
psc 54 42 59 41 / 60 60 20 10
ykm 55 38 61 38 / 70 60 20 10
hri 53 41 57 39 / 60 60 20 10
eln 48 35 51 36 / 70 60 20 10
rdm 55 35 52 31 / 70 70 30 10
lgd 56 39 53 35 / 50 80 60 20
gcd 56 38 53 33 / 60 90 50 10
dls 53 42 56 43 / 70 70 20 10

Pdt watches/warnings/advisories
Or... None.

Wa... None.


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Walla Walla Regional Airport, WA11 mi61 minWNW 510.00 miMostly Cloudy50°F37°F63%1011.1 hPa

Wind History from ALW (wind in knots)
Last 24hrW4CalmS4S7S7
1 day agoS12
2 days agoSW9

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
IR Satellite Image from GEOS

GOES Local Image of PacificNorthwest    EDIT

Wind Forecast for Pendleton, OR (14,3,4,5)
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Ground Weather Radar Station Pendleton, OR
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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.