Saturday, August19, 2017 L-36.com


Marine Weather and Tides
Happy Camp, CA

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 6:30AMSunset 8:09PM Saturday August 19, 2017 11:29 AM PDT (18:29 UTC) Moonrise 3:03AMMoonset 5:49PM 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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PZZ450 Pt St George To Cape Mendocino Out 10 Nm- 852 Am Pdt Sat Aug 19 2017
.small craft advisory in effect through Sunday evening...
Today..N winds 20 to 30 kt. Gusts up to 35 kt...rising to 40 kt. Waves nw 10 ft at 9 seconds. Patchy smoke.
Tonight..N winds 20 to 30 kt with gusts to around 40 kt. Waves nw 13 ft at 10 seconds. Patchy smoke.
Sun..N winds 15 to 25 kt with gusts to around 40 kt. Waves N 11 ft at 10 seconds. Patchy smoke.
Sun night..N winds 5 to 15 kt. Waves nw 9 ft at 9 seconds.
Mon..NW winds up to 5 kt. Waves nw 5 ft at 7 seconds.
Tue..NW winds 5 to 15 kt. Waves nw 5 ft at 6 seconds.
Wed..NW winds 5 to 15 kt. Waves nw 6 ft at 6 seconds...and nw 3 ft at 12 seconds.
PZZ400 852 Am Pdt Sat Aug 19 2017
Synopsis for northern california waters..Northerly gales will continue across the outer waters today and Sunday. Gale force gusts will be possible nearshore primarily near point saint george and cape mendocino. Seas will be large and steep through the weekend. Marine conditions are expected to settle by the middle of next week.

7 Day Forecast for Marine Location Near Happy Camp, CA
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location: 41.5, -123.35     debug


Area Discussion for - Medford, OR
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Fxus66 kmfr 191600
afdmfr
area forecast discussion
national weather service medford or
900 am pdt Sat aug 19 2017

Short term An upper level ridge centered offshore will
dominate the pattern today with a weak shortwave along the coast
moving south of the area this afternoon. The ridge will remain
offshore through Sunday then will shift inland on Monday. Some
weak upper level disturbances will be present in the flow but
expect continued dry weather. A moderate to stronger surface
thermal trough will persist along the coast then move inland
Monday afternoon. This thermal trough is bringing gusty winds and
dry humidities to the coastal and western siskiyou mountains. Also
expect gusty north to northeast winds are expected in the late
afternoon and evening over western portions of the area, mainly
west of the cascade crest. This pattern will persist through
Sunday and will bring heightened fire weather concerns. A fire
weather watch is out for the potential of critical fire weather
conditions. See the rfwmfr for details.

Numerous area wildfires will bring continued smoke impacts to the
area. The dry and breezy conditions are also allowing active
burning on area wildfires. Expect similar areas to be impacted by
smoke today as yesterday. Areas of smoke are expected in curry,
douglas, josephine, jackson, siskiyou and klamath counties. With
little change expected in the wind pattern through Sunday evening,
expect areas of smoke to bring continued air quality impacts to
the area. An air quality ALERT is in effect for many areas in
southwest oregon. See the aqamfr for details.

For Monday, the easterly winds over the ridges will decrease late
in the morning and over southern portions of the area from around
the siskiyous south, expect winds to gradually change to a
southeast directions late Monday morning. As the thermal trough
moves inland on Monday expect winds to shift to a north to
northwest direction. Smoke will continue to be a concern for
areas in southwest oregon and northwest california but the areas
which see the worst conditions may fluctuate slightly.

Cloud cover is expected to be clear for mostly clear for most
inland areas on Monday, the day of the eclipse. Smoke will remain
the main concern for inland areas. Also models are showing some
low clouds and fog along the oregon coast north of CAPE blanco and
into the coquille valley. However gradual clearing is expected in
the mid to late morning on Monday. Will continue to monitor this
closely with future model runs.

Aviation 19 12z TAF cycle... Ifr ceilings will prevail along the
coast north of CAPE blanco this morning. Some MVFR ceilings may try
to form in parts of the umpqua basin toward sunrise, however,
confidence is low that this will occur. At 3 am the temperature-
dewpoint spread at rbg was still 7 deg. C. The rest of the area will
beVFR, but widespread smoke from wildfires will result in
visibility degradation to MVFR at times.

Sandler

Marine Updated 305 am pdt Saturday 19 august 2017... High
pressure centered offshore and a thermal trough along the coast will
support moderate to strong north winds and steep to very steep seas
through this weekend. Conditions will at least be hazardous to small
craft, but warning level winds seas will occur beyond 5 nm from
shore from gold beach south. Winds and seas will be highest during
the afternoons and evenings each day through Sunday, easing a bit
during the overnight and early morning hours. The thermal trough
will weaken early next week, and winds and seas will diminish then.

Sandler

Prev discussion issued 444 am pdt Sat aug 19 2017
discussion... There is relatively little change to the previous
issuance of the forecast. There is increased confidence in the
forecast through Wednesday with very good agreement between the
ensemble members of the 00z GFS and ECMWF models. The upper level
pattern will evolve slowly with a quasi-rex block into Monday as
high pressure centered far offshore of northern california nudges
into the region and a broad trough remains centered offshore of
southern california.

The weather this weekend will be just a bit less hot than
yesterday while the air mass remains dry and stable. Low clouds
and fog along the coast north of CAPE blanco and into western
douglas county are expected to diminish quickly this morning then
return later this evening. This pattern will also continue
patches to areas of smoky skies into early next week. With the
northeast to east winds occuring each night then north to
northwest winds in the afternoon and evening expect most inland
areas to continue to experience smoke. Air quality alerts are in
effect for douglas, curry, josephine, jackson and klamath
counties. With the active chetco fire in southern curry county and
the northeast winds expect smoke to continue to move into the
brookings area at times. Also the northeast winds will bring a
chetco effect with some warm temperatures in the brookings area.

It will be slightly hotter again Monday then there is a slight
chance to chance of thunderstorms for much of the area, mainly
from the southern oregon cascade and siskiyou mountains south and
eastward on Tuesday and Wednesday. A cold front is likely to
follow on Thursday with gusty winds, little or no rain, and the
coolest temperatures of the week... Near to slightly below normal.

There is uncertainty in the timing and position of the Thursday
front with the ECMWF indicating a morning passage and the GFS a
more impactful afternoon timing. The farther to the north and west,
the higher the probability the front produces rain.

The highest probability is for ridging to bring warming and
drying at the end of the week. Either rain with mid- week
thunderstorms or the frontal passage on Thursday may provide some
reduction in smoky skies. But, of course, they also have the
respective risks of creating new fires and worsening behavior of
existing fires.

Mfr watches warnings advisories
Or... Fire weather watch from 5 pm pdt this afternoon through Sunday
morning for orz619.

Ca... None.

Pacific coastal waters... Small craft advisory until 11 pm pdt Sunday for
pzz350-356-370-376.

Gale warning until 11 pm pdt Sunday for pzz356-376.

Cc


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CECC1 - 9419750 - Crescent City, CA 47 mi41 min N 8.9 G 13 62°F 59°F1015.1 hPa
46027 - ST GEORGES - 8NM West Northwest of Crescent City, CA 60 mi39 min NNW 27 G 31 56°F 53°F9 ft1014 hPa (-0.7)
46244 - Humboldt Bay, North Spit, CA 68 mi38 min 54°F9 ft

Wind History for Crescent City, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Montague Siskiyou County Airport, CA51 mi36 minNNW 63.00 miOvercast with Haze74°F39°F29%1017.7 hPa

Wind History from SIY (wind in knots)
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Last 24hr445NW5N10
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N17N15N13N10N7N8N6N6N6SE44N7SW4CalmSE3CalmCalmCalmNW6
1 day agoN4Calm33N8N10N14N13N10N12N12N5NW5E4SW4NE4CalmCalmCalmCalmCalmCalmCalm3
2 days agoN3Calm6N8NW11
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N12N10NW4NW5N7NE4CalmSE3CalmSW3CalmCalmN334

Tide / Current Tables for Crescent City, California
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Crescent City
Click for Map
Sat -- 04:06 AM PDT     Moonrise
Sat -- 04:28 AM PDT     -0.83 feet Low Tide
Sat -- 06:29 AM PDT     Sunrise
Sat -- 11:03 AM PDT     5.91 feet High Tide
Sat -- 04:19 PM PDT     2.37 feet Low Tide
Sat -- 06:52 PM PDT     Moonset
Sat -- 08:10 PM PDT     Sunset
Sat -- 10:21 PM PDT     7.75 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
5.23.31.50.1-0.7-0.70.11.434.55.55.95.64.83.82.92.42.53.34.55.97.17.77.6

Tide / Current Tables for Trinidad Harbor, California
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Trinidad Harbor
Click for Map
Sat -- 04:07 AM PDT     Moonrise
Sat -- 04:31 AM PDT     -0.79 feet Low Tide
Sat -- 06:30 AM PDT     Sunrise
Sat -- 11:06 AM PDT     5.70 feet High Tide
Sat -- 04:22 PM PDT     2.37 feet Low Tide
Sat -- 06:51 PM PDT     Moonset
Sat -- 08:08 PM PDT     Sunset
Sat -- 10:24 PM PDT     7.47 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
53.31.50.1-0.7-0.701.32.94.35.35.75.54.73.82.92.42.53.24.35.66.87.47.3

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

GOES Local Image of CentralWestCoast    EDIT
Geos

Wind Forecast for Medford, OR (14,3,4,5)
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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.