Friday, July21, 2017 L-36.com


Marine Weather and Tides
Harbor, OR

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
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.

Sunrise 5:53AMSunset 8:45PM Thursday July 20, 2017 9:38 PM PDT (04:38 UTC) Moonrise 2:19AMMoonset 5:14PM Illumination 7% Phase: Waning Crescent; Moon at 27 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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This is a Weather Statement Zone, please check the Date to see if it has expired
PZZ330 1126 Pm Pdt Fri Aug 9 2013
.thunderstorms over the waters... Thunderstorms over the waters have weakened but isolated storms will continue overnight. Mariners can expect gusty and erratic winds with the storms along with frequent lightning. If caught on the open water stay below deck if possible...keep away from ungrounded metal objects. Lat...lon 4397 12411 4396 12411 4400 12413 4284 12455 4242 12440 4225 12441 4205 12428 4184 12422 4181 12580 4198 12579 4220 12589 4370 12576 4386 12565 4399 12562 4403 12414
PZZ300 840 Pm Pdt Thu Jul 20 2017
Synopsis for the southern oregon coastal waters..Winds and seas will remain relatively calm through Friday morning as surface high pressure builds to the west. The thermal trough will strengthen late Friday through the weekend, producing gusty north winds and steep seas, likely reaching gale force as early as Saturday afternoon south of cape blanco. A period of hazardous seas warning conditions is also likely for portions of the area between florence and cape blanco Sunday morning through Monday morning. The thermal trough will persist into early next week, though it will weaken Tuesday and Wednesday.

7 Day Forecast for Marine Location Near Harbor, OR
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location: 42.05, -124.27     debug


Area Discussion for - Medford, OR
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Fxus66 kmfr 210300
afdmfr
area forecast discussion
national weather service medford or
800 pm pdt Thu jul 20 2017

Discussion 21 00z NAM in.

A quiet evening weatherwise over the medford cwa. Just some marine
stratus over the coastal valleys and some dissipating cumulus over
the ridges.

A flat ridge will build north over the west coast into Saturday.

The thermal trough along the coast will deepen, inducing
increasing low level easterly flow. The overall effect will be
continued dry weather with a strong warming trend. This weekend
will be quite hot over the inland areas.

A critical change in the pattern will occur this weekend... When a
weak cutoff low will develop off the northern california coast.

This will bring winds aloft around to the south, which will allow
monsoonal moisture to filter into the area. This, combined with
the intense surface heating, will allow thunderstorms to develop
over the CWA beginning Sunday afternoon.

Extended discussion from the Thursday afternoon afd... Sunday night
through Thursday. The upper level low continues to slowly migrate
inland into Monday. Elevated instability remains over portions of
the region Sunday night, and with continuing vort lobes spinning
around the upper low have added thunderstorms overnight into
Monday. The upper low opens to an upper trough into Tuesday and
continues to move inland into Tuesday, shifting the instability
eastward. An upper level trough pattern remains Wednesday , but
the flow becomes more westerly, continuing to shift the
instability east of the region into Thursday. Sven

Aviation 21 00z TAF cycle... Both winds and the marine layer
will be lesser than have been observed in the past 24 hours. As of
643 pm pdt, a couple of patches of MVFR ceilings exist over and
around gold beach and in southern coos and northern curry counties
from around powers west to the coast. In addition to these
patches of MVFR clouds, MVFR to ifr ceilings and partial terrain
obscurations are expected to develop along and near the coast and
north and west of roseburg, mainly between 06z and 18z. Confidence
is moderate in the height of the marine layer clouds, and in
there being no ceiling in the overnight and morning hours at krbg,
as guidance mostly, but not unanimously, favors the going
forecast. Otherwise,VFR conditions will prevail. Btl

Marine Updated 648 pm pdt Thursday, 20 july 2017... Winds and
seas will remain relatively calm through Friday morning as surface
high pressure builds to the north and west. The thermal trough
will strengthen late Friday through the weekend, producing gusty
north winds and steep seas, likely reaching gale force Saturday
afternoon south of CAPE blanco. A period of hazardous seas warning
conditions is also likely for portions of the area between
florence and CAPE blanco Sunday morning through Monday morning.

The thermal trough will then generally continue this same gusty
north wind pattern into early next week, though it is expected to
weaken some Tuesday and Wednesday. Btl

Fire weather Updated 800 pm Thursday 20 july 2017... The two
main concerns are: easterly winds with moderate ridge top humidity
recoveries Friday night and Saturday night, and a slight chance
to chance of thunderstorms Sunday afternoon through Tuesday
evening. First, it will remain hot and dry through Friday but with
a slight improvement in humidities and decrease in wind speeds to
closer to normal levels.

Humidity recoveries will be poorest Friday night but still worse
than normal into early next week, and there will be a warming trend
into Sunday with easterly low level winds. This will be due to a
ridge building into the area with a deepening thermal trough near
the coast.

Of even greater concern is a low offshore of california that will
move slowly northeast toward oregon. There are still model
differences in the track and timing of the low and its associated
shortwaves. But there is general agreement that it will pull
monsoonal moisture northward and increase instability Sunday
afternoon then continue to affect our area at least through Monday
evening. Shortwaves rotating around the low could continue
thunderstorm activity during the overnight hours. It is also
possible that weaker instability will follow after Monday evening
and linger through the middle of the week. The highest probability
for thunderstorms Sunday afternoon and evening lies to the east
of the coastal ranges up to and including the cascades. By Monday
afternoon, the area shifts to the east side, but still includes
the cascades. The latest ECMWF solution has trended towards the
gfs, which is concerning given the wider area of thunderstorm
chances and the more robust instability, and given the model
agreement, confidence is increasing in the likelihood of a multi-
day thunderstorm event. -dw bpn

Mfr watches warnings advisories
Or... None.

Ca... None.

Pacific coastal waters... Gale watch from Saturday afternoon
through Monday evening for pzz356-376.

Hazardous seas watch from late Saturday night through late
Sunday night for pzz350-370.

15 15 15


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46027 - ST GEORGES - 8NM West Northwest of Crescent City, CA 15 mi49 min WNW 9.7 G 9.7 56°F 55°F2 ft1020 hPa (-0.5)
CECC1 - 9419750 - Crescent City, CA 21 mi51 min N 5.1 G 8.9 58°F 53°F1021.1 hPa
PORO3 - 9431647 - Port Orford, OR 49 mi51 min NW 7 G 12 60°F 49°F1020.4 hPa

Wind History for Crescent City, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Brookings, Brookings Airport, OR2 mi43 minESE 310.00 miFair58°F54°F87%1022 hPa
Crescent City, Jack McNamara Field Airport, CA18 mi43 minN 310.00 miMostly Cloudy56°F55°F97%1021.2 hPa

Wind History from BOK (wind in knots)
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Last 24hrCalmCalmNE3CalmCalmCalmCalmCalmCalmCalmCalmW4NW7NW8NW12NW11NW10
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1 day agoCalmCalmCalmCalmCalmNE3CalmCalmNE3E3NE3SW33SW3SW55W6W9NW11
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2 days agoSE4CalmCalmCalmCalmCalmSE3Calm3S4E3SE4SW3W43SW5S7S3444SW3S5Calm

Tide / Current Tables for Brookings, Chetco Cove, Oregon
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Brookings
Click for Map
Fri -- 04:15 AM PDT     Moonrise
Fri -- 04:48 AM PDT     -1.19 feet Low Tide
Fri -- 06:00 AM PDT     Sunrise
Fri -- 11:19 AM PDT     5.69 feet High Tide
Fri -- 04:26 PM PDT     2.45 feet Low Tide
Fri -- 07:17 PM PDT     Moonset
Fri -- 08:46 PM PDT     Sunset
Fri -- 10:29 PM PDT     8.13 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
5.73.81.90.2-0.9-1.2-0.60.72.33.95.15.75.64.943.12.52.63.24.55.97.288

Tide / Current Tables for Crescent, California
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Tide / Current data from XTide NOT FOR NAVIGATIONSorry tide depth graphs only, please select another station.

Weather Map and Satellite Images
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Weather Map
wmap_P
IR Satellite Image from GEOS
west_satellite

GOES Local Image of PacificNorthwest    EDIT
Geos

Wind Forecast for Medford, OR (0,6,7,8)
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Ground Weather Radar Station Medford, OR
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weather_mapweather_map weather_map

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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.