Wednesday, January23, 2019 L-36.com


Marine Weather and Tides
Coos Bay, OR

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 7:39AMSunset 5:17PM Wednesday January 23, 2019 10:18 AM PST (18:18 UTC) Moonrise 8:43PMMoonset 9:37AM Illumination 92% Phase: Waning Gibbous; Moon at 18 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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PZZ350 Coastal Waters From Florence To Cape Blanco Or Out 10 Nm- 831 Am Pst Wed Jan 23 2019
.small craft advisory in effect until 10 am pst this morning...
Today..SW wind 15 to 25 kt...becoming 15 to 20 kt early in the afternoon, then...veering to W 5 to 15 kt late afternoon. Wind waves 5 to 6 ft...subsiding to 3 to 4 ft in the afternoon. W swell 9 to 11 ft at 15 seconds. Rain.
Tonight..W wind 5 to 10 kt...veering to N in the late evening and overnight. Wind waves 2 ft or less. W swell 10 to 11 ft at 14 seconds. Chance of showers through the night.
Thu..NE wind 5 to 10 kt. Wind waves 2 ft or less. W swell 9 ft at 14 seconds...subsiding to 7 ft at 13 seconds in the afternoon.
Thu night..NE wind 10 to 15 kt. Wind waves 3 ft. W swell 6 to 7 ft...subsiding to 5 ft and W 6 ft after midnight.
Fri..NE wind 5 to 15 kt. Wind waves 2 ft or less. W swell 7 to 8 ft.
Fri night..N wind 10 to 15 kt. Wind waves 3 ft. W swell 7 to 8 ft.
Sat..NE wind 10 to 15 kt...easing to 5 kt after midnight. Wind waves 2 ft or less. W swell 6 to 7 ft.
Sun..E wind 5 kt...backing to n. Wind waves 2 ft or less. W swell 6 to 7 ft.
PZZ300 831 Am Pst Wed Jan 23 2019
Synopsis for the southern oregon coastal waters.. Breezy south winds, strongest in the vicinity of cape blanco and points northward, will continue this morning. Seas will build to levels hazardous to small craft and are then expected to persist into early Thursday morning. Winds will become northerly and gradually increase Thursday, likely reaching advisory levels south of cape blanco Thursday evening through Saturday morning. A prolonged period of relatively calm winds and seas is then expected Saturday afternoon through early next week.


7 Day Forecast for Marine Location Near Coos Bay city, OR
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location: 43.38, -124.22     debug


Area Discussion for - Medford, OR
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Fxus66 kmfr 231716
afdmfr
area forecast discussion
national weather service medford or
916 am pst Wed jan 23 2019

Discussion A weak cold front is slowly moving south of the
forecast area with intermittent light rain expected mainly west of
the cascades. Snow levels are expected to rise to around 7000 feet
this afternoon, therefore snow is expected to be confined to the
higher elevations around crater lake. Even then were not expecting
anything significant. Could not rule out some light snow around
diamond lake this morning, but roads should remain wet during the
day. The models are in good agreement suggesting the best chance
for precipitation will be along and west of the cascades today
which is reasonable given the upper flow is from the west to
northwest, so would expect the majority of moisture to get rung
out along and west of the cascades, therefore adjusted pops lower
for east of the cascades and into modoc county in northern cal.

The NAM is the most aggressive in terms of QPF amounts, but
several of the high res short range models and the GFS show much
lesser amounts. We'll be in the right entrance region of the
upper jet this afternoon which could provide enough energy for
enhanced precipitation. So we'll leave those alone, but did adjust
qpf amounts lower for this morning.

The front will weaken and dissipate this evening and tonight with
most showers ending after midnight. A long stretch of dry weather
is on tap starting Thursday and is likely to last into most of
next week. -petrucelli

Aviation For the 24 12z tafs...

a cold front moving southeastward into the area this morning will
bring lowering ceilings and visibilities through the morning hours.

Current ifr throughVFR conditions are expected to deteriorate to
lifr to MVFR west of the cascades. Some improvement to ifr through
vfr is expected late this afternoon into early this evening.

Clearing this evening and overnight is expected to result in
widespread fog and freezing fog Thursday morning, especially, but
not confined to, areas west of the cascades. Expect terrain
obscurations from the cascades westward today to become partial this
afternoon and evening, before clearing tonight. Btl

Marine Updated 800 am pst Wednesday, 23 january 2019...

breezy south winds, strongest in the vicinity of CAPE blanco and
points northward, will continue this morning in association with a
weak cold front. Seas will build to levels hazardous to small craft
and are then expected to persist into early Thursday morning before
subsiding. Winds will become northerly and gradually increase
Thursday as a thermal trough develops, likely reaching advisory
levels south of CAPE blanco Thursday evening through Saturday
morning. A prolonged period of relatively calm winds and seas is
then expected Saturday afternoon through early next week, though
some model guidance does suggest northerlies may surge briefly to
advisory levels again late Sunday into Monday as a dry cold front
passes to the east. -btl bpn

Prev discussion issued 420 am pst Wed jan 23 2019
short term... A frontal boundary is shifting south into the area.

Rain and mountain snow has spread into southwest oregon this
morning. Precipitation will increase this morning and continue
into the afternoon and evening, before diminishing tonight. Moist
onshore flow will bring light to moderate precipitation with
greatest amounts along the coast, coastal mountains and into the
southern oregon cascades. Precipitation may spread into portions
of northern california today as well. Snow levels vary this
morning from around 6000 feet or higher west of the cascades in
oregon to generally around 4000 to 5000 feet from the cascades
east. Snow levels are expected to rise during the late morning and
afternoon today to 6000 to 7500 feet. However before snow levels
rise, snow of 1 to 4 inches may accumulate in the southern oregon
cascades this morning, especially near diamond lake and crater
lake. Breezy west winds are also likely today over the cascades
and for areas east of the cascades.

Behind this front, the high pressure ridge centered offshore will
nudge inland tonight. Flow aloft will turn northerly and expect
showers to taper off. The ridge will strengthen over the area
Thursday. This will bring dry weather to the area. Valleys are
expected to see areas of fog tonight into Thursday morning,
especially for areas west of the cascades. However, valleys east
of the cascades may see patchy freezing fog develop tonight into
Thursday morning as well.

The ridge will remain in place Friday but a weak shortwave will
move over the ridge and into the area. This disturbance will be
weak though so do not expect any precipitation with it.

Temperatures are forecast to start out quite cold on Friday
morning, especially for eastern areas with guidance indicating
temperatures in the teens east of the cascades. West of of the
cascades, expect areas of valley fog and freezing fog Friday
morning with morning temperatures in the low to mid 30s in
southwest oregon valleys and in the 20s to low 30s for valley in
siskiyou county. Breezy easterly winds are forecast across the
coastal ridges as a surface thermal trough strengthens along the
coast.

Long term... Saturday, the upper ridge will shift inland over the
region and bring a warm and dry pattern to the area. However,
valley inversions will allow for areas of valley fog during the
overnight and morning periods in western valleys. Breezy east
winds are expected over the ridges on Saturday with warming
temperatures over the mountains and dry humidities during the day.

Also expect east to northeast winds to result in a mild chetco
effect, bringing warmer temperatures to the brookings area on
Saturday. This may also occur on Friday for the brookings area but
will peak on Saturday.

On Sunday the upper ridge will begin to weaken and shift offshore
as an upper trough gradually shifts southward into areas east of
the cascades, becoming centered over idaho, montana and wyoming by
Sunday evening. The inversion is expected to break during the
afternoon and this combined with the warm air mass still in
place, is expected to bring warm temperatures areawide. Highs are
forecast in the upper 50s to near 60 for western valleys on
Sunday and in the low 50s for eastern valleys.

Late Sunday into Monday, the upper trough will continue to shift
southeastward. This pattern is expected to bring a cooling trend
on Monday, especially for areas east of the cascades. However,
expect continued dry weather with the upper ridge centered just
offshore. An increasing surface pressure gradient is expected to
result in strong gusty east winds over the ridge tops on Monday
and into Tuesday. Along with gusty winds, mountains are expected
to see dry daytime humidities Monday into Tuesday.

Aviation... For the 24 12z tafs...

a cold front moving southeastward into the area this morning will
bring lowering ceilings and visibilities through the morning hours.

Current ifr throughVFR conditions are expected to deteriorate to
lifr to MVFR west of the cascades. Some improvement to ifr through
vfr is expected late this afternoon into early this evening.

Clearing this evening and overnight is expected to result in
widespread fog and freezing fog Thursday morning, especially, but
not confined to, areas west of the cascades. Expect terrain
obscurations from the cascades westward today to become partial this
afternoon and evening, before clearing tonight. Btl
marine... Updated 200 am pst Wednesday, 23 january 2019...

breezy south winds, strongest in the vicinity of CAPE blanco and
points northward, will continue this morning in association with a
cold front. Seas will build to levels hazardous to small craft and
are then expected to persist into early Thursday morning before
subsiding. Winds will become northerly and gradually increase
Thursday as a thermal trough develops, likely reaching advisory
levels south of CAPE blanco Thursday evening through Saturday
morning. A prolonged period of relatively calm winds and seas is
then expected Saturday afternoon through early next week, though
some model guidance does suggest northerlies may surge briefly to
advisory levels again late Sunday into Monday as a dry cold front
moves through. Btl

Mfr watches warnings advisories
Or... Wind advisory until 7 pm pst this evening for orz030-031.

Ca... Wind advisory until 7 pm pst this evening for caz085.

Pacific coastal waters... Small craft advisory until 10 am pst this morning for
pzz350-356-370.

Small craft advisory for hazardous seas until 4 am pst Thursday
for pzz356-370-376.

Small craft advisory for hazardous seas until 4 am pst Thursday
for pzz350.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CHAO3 - 9432780 - Charleston, OR 7 mi43 min SSW 6 G 11 51°F1030.7 hPa
SNTO3 9 mi49 min SSW 5.1 52°F 1031 hPa52°F
PORO3 - 9431647 - Port Orford, OR 47 mi31 min SSE 15 G 16

Wind History for Charleston, OR
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Southwest Oregon Regional Airport, OR4 mi23 minSW 101.75 miLight Rain Fog/Mist53°F52°F96%1031.3 hPa

Wind History from OTH (wind in knots)
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1 day agoSE4--W33NW7NW4NW4CalmSE4SE5SE5SE5SE5SE6SE5SE6SE7SE5SE6SE7SE4S7SE6--
2 days agoSE8SE6SE9S6SE6SE7E5SE7SE5SE4SE4E3S8SE4N6N4CalmCalmE3--CalmSE5SE6SE4

Tide / Current Tables for Coos Bay, Oregon
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for Charleston, Oregon
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Charleston
Click for Map
Wed -- 01:59 AM PST     7.66 feet High Tide
Wed -- 07:29 AM PST     2.25 feet Low Tide
Wed -- 07:41 AM PST     Sunrise
Wed -- 09:37 AM PST     Moonset
Wed -- 01:22 PM PST     8.78 feet High Tide
Wed -- 05:17 PM PST     Sunset
Wed -- 08:08 PM PST     -1.37 feet Low Tide
Wed -- 08:43 PM PST     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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5.87.27.77.264.53.22.42.43.24.76.47.98.78.67.55.53.21-0.7-1.4-10.42.4

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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Wind Forecast for Medford, OR (13,3,4,5)
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Ground Weather Radar Station Medford, 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 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.