Thursday, October17, 2019 L-36.com


Marine Weather and Tides
Coos Bay, OR

Version 3.4
NOTICE
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 7:31AMSunset 6:32PM Thursday October 17, 2019 10:45 AM PDT (17:45 UTC) Moonrise 8:01PMMoonset 10:16AM Illumination 83% Phase: Waning Gibbous; Moon at 19 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- 820 Am Pdt Thu Oct 17 2019
.hazardous seas warning in effect through late tonight...
.small craft advisory in effect through Sunday morning...
Today..S wind 20 to 25 kt...becoming sw 15 kt in the afternoon. Wind waves 3 to 4 ft. W swell 14 to 17 ft at 15 seconds. Showers.
Tonight..S wind 20 to 25 kt...becoming sw 10 to 15 kt after midnight. Wind waves 3 to 6 ft. W swell 15 to 17 ft at 15 seconds. Slight chance of tstms in the evening. Showers through the night.
Fri..S wind 10 to 20 kt. Wind waves 3 ft. NW swell 14 to 15 ft at 14 seconds. Chance of showers in the morning, then chance of rain in the afternoon.
Fri night..S wind 20 kt...rising to 30 kt after midnight. Wind waves 3 to 5 ft...building to 7 to 9 ft after midnight. NW swell 12 to 13 ft. Rain.
Sat..W wind 20 to 25 kt...easing to 15 to 20 kt in the afternoon. Wind waves 6 to 9 ft. NW swell 12 to 14 ft. Rain in the morning, then showers likely in the afternoon.
Sat night..W wind 10 kt...backing to sw after midnight. Wind waves 6 to 7 ft...subsiding to 4 ft after midnight. NW swell 12 to 14 ft. Chance of showers.
Sun..S wind 10 to 15 kt. Wind waves 3 to 4 ft... Building to 4 to 5 ft. NW swell 11 ft...subsiding to 8 ft.
Mon..S wind 10 kt...veering to sw. Wind waves 2 ft or less. NW swell 8 ft.
PZZ300 820 Am Pdt Thu Oct 17 2019
Synopsis for the southern oregon coastal waters..Long period west swell will build into the waters today, resulting in steep to very steep seas by this afternoon which will then persist through Thursday night. There will be heavy surf and hazardous bar conditions. Seas will subside Friday but remain steep. Another front Friday night may bring strong winds and elevated seas. Weaker fronts will follow into Sunday night.


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 171615 cca
afdmfr
area forecast discussion
national weather service medford or
825 am pdt Thu oct 17 2019

Update A large area of showers is making its way onshore this
morning, and will spread east over the next several hours. The bulk
of the showers are expected to dissipate as they cross the higher
terrain of the siskiyous and cascades, but not all, so shower
chances will persist for much of the area through this afternoon.

Snow levels should hover just above 5000 feet, but locally lower
snow levels are possible, especially within heavier precipitation,
so some high passes may see some accumulations. For more information
on this and the rest of the forecast, see the previous discussion
below. -bpn

Aviation For the 17 12z tafs... From the cascades west... Areas of
MVFR CIGS and local ifr in scattered showers and low clouds with
higher terrain obscured this morning. MainlyVFR ceilings by this
afternoon. However, some higher terrain will remain obscured in
especially near showers. Areas of MVFR CIGS will return this
evening, persisting through tonight. East of the cascades...VFR
conditions will prevail, but there will be obscuration of higher
terrain this morning. The precipitation will end this morning with
vfr ceilings this afternoon.

Marine Updated 800 am pdt Thursday 17 october 2019... Large and
long period west to northwest swell will build into the coastal
waters today into tonight, resulting in a mix of steep to very steep
seas by this afternoon. Seas will peak between 16 and 19 feet at 15
to 16 seconds before gradually subsiding early Friday. A hazardous
seas warning and high surf advisory have been issued, and bar
crossings will become hazardous.

Small craft advisory winds and seas are expected late Friday into
Saturday associated with a cold front. Strong winds and steep to
very steep seas are possible.

Prev discussion issued 421 am pdt Thu oct 17 2019
discussion... The main band of precipitation with the front moving
through the region has moved east of the cascades, and will continue
to move through the early morning hours. With the cooler air mass
moving in behind the front showers will increase in coverage and
intensity as the combination of increased lapse rates and another
front moving moving into the area. The next front will move onto the
coast early this afternoon, and while there is some instability with
this front, the cooler temperatures below -25c are north into
portland's forecast area and the slight chance of thunderstorms
looks to be from CAPE blanco northward in the coastal waters.

High surf will impact the coast through this evening and a high
surf advisory continues for that area.

The next front moving through tonight has our forecast area in a
favorable left exit region of a +110 kt jet, but the strong
atmospheric river flow that helped bring heavier rain is no longer
feeding in with this front. With this lack of a good atmospheric
river flow the precipitation amounts will be considerably less
than the front moving east this morning, in spite of the favorable
jet dynamics.

The next in the series of fronts moves into the region Friday
night into Saturday. This front is expected to have a good
atmospheric river contribution, and even though the best left exit
region of the jet dynamics will be a bit north of the forecast
area, precipitation rates will be similar to the front that moved
through this morning, but for a slightly shorter duration.

Yet another front moves in early Sunday, and with rising heights
ahead of the front the jet axis is well north of the region, and
the resulting dynamics and heavier precipitation north of the
forecast area as well. Sven

Mfr watches warnings advisories
Or... High surf advisory until 5 am pdt Friday for orz021-022.

Ca... None.

Pacific coastal waters... Small craft advisory until 11 am pdt Sunday
for pzz350-356-370-376. Hazardous seas warning until 5 am
pdt Friday for pzz350-356-370-376.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CHAO3 - 9432780 - Charleston, OR 7 mi69 min S 4.1 G 8.9 52°F1012.5 hPa
46128 18 mi45 min SSW 23 52°F 56°F
46229 - UMPQUA OFFSHORE, OR (139) 32 mi45 min 56°F13 ft
PORO3 - 9431647 - Port Orford, OR 47 mi45 min SE 12 G 18 53°F 51°F1015.2 hPa (+1.7)

Wind History for Charleston, OR
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Southwest Oregon Regional Airport, OR4 mi49 minS 910.00 miMostly Cloudy55°F53°F93%1012.8 hPa

Link to 5 minute data for KOTH

Wind History from OTH (wind in knots)
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Last 24hrSE4E3CalmS14
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1 day ago5SW5SE7S5W8SW7W6SW5S5S5S3S3S8S8SE7SE5S5S7SE6SE5S6SE6S4Calm
2 days agoW4N5NW8N9N13
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N16N11N10N11N4CalmS4S3S3--SE6CalmS3SE6SE8S5SE4SE8SE8

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
Thu -- 03:09 AM PDT     6.52 feet High Tide
Thu -- 07:33 AM PDT     Sunrise
Thu -- 08:35 AM PDT     2.77 feet Low Tide
Thu -- 11:16 AM PDT     Moonset
Thu -- 02:34 PM PDT     7.72 feet High Tide
Thu -- 06:31 PM PDT     Sunset
Thu -- 09:01 PM PDT     Moonrise
Thu -- 09:26 PM PDT     0.21 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.556.16.56.35.54.53.52.92.83.44.45.76.97.67.775.742.310.30.31.1

Weather Map
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wmap_P
GEOS 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 Medford, OR (13,3,4,5)
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Ground Weather Radar Station Medford, OR
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Disclaimer:
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.