Sunday, September24, 2017 L-36.com


Marine Weather and Tides
Yreka, 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 6:59AMSunset 7:06PM Saturday September 23, 2017 11:39 PM PDT (06:39 UTC) Moonrise 9:25AMMoonset 8:20PM Illumination 13% Phase: Waxing Crescent; Moon at 4 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 847 Pm Pdt Sat Sep 23 2017
Synopsis for the southern oregon coastal waters.. Short period northwest swell will gradually subside tonight while a thermal trough maintains gusty north winds and steep seas south of cape blanco. Winds and seas will peak each afternoon and evening through Tuesday, and small craft advisory conditions will spread north Sunday and Monday to cover a broader area south of cape blanco. North winds may increase even further late Tuesday afternoon into Tuesday evening and bring a mix of steep to very steep seas south of cape blanco with steep seas and small craft advisory winds possible north of cape blanco. North winds will gradually diminish Wednesday.

7 Day Forecast for Marine Location Near Yreka, CA
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location: 41.75, -122.64     debug


Area Discussion for - Medford, OR
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Fxus66 kmfr 240552
afdmfr
area forecast discussion
national weather service medford or
1055 pm pdt Sat sep 23 2017

Update
Updates were sent to the sky cover forecast for tonight through
Sunday evening. These updates were made to better capture the
marine layer clouds and fog currently occuring and expected to
occur, as well as some cloudiness over portions of the east side.

Btl

Discussion
Mid-level clouds on the east side are associated with the upper
level trough that's now centered over southern utah. Some
shortwave energy will ride the jet stream in from the northwest
today through Sunday resulting in an increase in marine layer
cloudiness from about CAPE blanco northward, and mostly high
clouds will move over the remainder of the area. Temperatures will
be about 5 degrees warmer Sunday than they were today, making for
another stellar early autumn day. Btl

Aviation 24 06z TAF cycle... Patchy ifr to lifr fog and low
ceilings are expected to continue along and near the coast north of
cape blanco, to include in the coquille basin, this evening through
much of Sunday morning before dissipating. Isolated and brief
MVFR ifr visibilities in radiation fog are also possible in the
umpqua basin around sunrise Sunday morning. Otherwise,VFR will
prevail. Btl

Marine Updated 846 pm pdt Saturday, 23 september 2017... Short
period northwest swell will gradually subside tonight while a
thermal trough maintains gusty north winds and steep seas south of
cape blanco. Winds and seas will peak each afternoon and evening
through Tuesday, and small craft advisory conditions will spread
north Sunday to cover a broader area south of CAPE blanco. North
winds may increase even further late Tuesday afternoon into
Tuesday evening with strong north winds and a mix of steep to very
steep seas possible across a wider area, to include some areas
north of CAPE blanco. There is some potential for gale force gusts
south of CAPE blanco during this time period as well. North winds
will diminish Wednesday into Wednesday night. Btl cc

Fire weather Updated 200 pm pdt Saturday, 23 september 2017... .

A warming and drying trend is expected through the middle of the
week. Temperatures are expected to peak, and humidity values are
expected to be at their lowest, around Thursday as the thermal
trough moves inland. Breezy and dry is a fair characterization of
the fire weather environment towards the coast south of CAPE blanco
and in western siskiyou county. Additionally, those favored north to
south oriented valleys like the umpqua and illinois, will see breezy
conditions during the afternoons, along with the east side. One
thing we've noted when perusing the data is that the high haines
index never really gets above 3 or 4, even when the thermal trough
moves inland. This is indicative of the changing of the seasons, and
the lack of a very dry air mass or the instability needed to create
critical fire weather conditions.

At no time during the next week do we approach rfw conditions. There
will be periods of breezy winds, but humidities are not expected to
drop low enough to produce fire weather concerns.

Looking further out, the mostly dry and warmer than normal
conditions should generally persist through week 2. This is
supported by the operational models, CPC outlooks, and cfsv2 model.

-sk bpn

Prev discussion issued 156 pm pdt Sat sep 23 2017
discussion... A warming and drying trend will continue this
weekend into most of next week, while at the coast the thermal
trough sets up. High temperatures will warm to near seasonal norms
Sunday and Monday, then rise further to about 5 to 10 degrees
above normals Tuesday and Wednesday. For the rogue valley this
means high temperatures could rise to the middle 80s around
Wednesday of next week. The offshore flow is expected to bring
warm and dry conditions to the brookings area and the kalmiopsis
wilderness as well with steep inversion in the valleys.

The thermal trough expands north past coos county Wednesday and
this could lead to a greater warming than MOS guidance at north
bend. If this scenario verifies, we could also see stratus surge
into southern curry county which would undercut the high
temperatures in the forecast.

Both the GFS and ECMWF shift the ridge axis east by Friday as the
next front moves into the coastal waters then through the forecast
area next weekend. Aside from cooler temperatures this next front
is expected to be dry. Fb

Mfr watches warnings advisories
Or... None.

Ca... None.

Pacific coastal waters...

- small craft advisory until 5 am pdt Wednesday for pzz356-376.

- hazardous seas watch from Tuesday afternoon through late
Tuesday night for pzz376.

Btl fjb bpn cc


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CECC1 - 9419750 - Crescent City, CA 82 mi70 min WSW 1 G 4.1 55°F 58°F1015.9 hPa
46027 - ST GEORGES - 8NM West Northwest of Crescent City, CA 93 mi50 min N 19 G 23 56°F 56°F6 ft1015.3 hPa (+0.8)

Wind History for Crescent City, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Montague Siskiyou County Airport, CA9 mi47 minNNE 1110.00 miFair52°F34°F50%1018.7 hPa

Wind History from SIY (wind in knots)
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Last 24hrN3N8N7N9NE4NE6CalmCalmCalmNE5NE3--CalmN6N7N12N11N9N11N10NE11NE10NE12NE11
1 day agoN5N5NE4CalmE4E3CalmE4CalmNE3CalmCalm3536N14N13N13N9N10N10NE8N10
2 days agoW4W8NE4NE4CalmE4N3CalmCalmNE4E5--N8Calm5
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Tide / Current Tables for Crescent City, California
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Crescent City
Click for Map
Sun -- 03:01 AM PDT     5.82 feet High Tide
Sun -- 07:06 AM PDT     Sunrise
Sun -- 08:42 AM PDT     2.06 feet Low Tide
Sun -- 11:30 AM PDT     Moonrise
Sun -- 02:46 PM PDT     6.53 feet High Tide
Sun -- 07:09 PM PDT     Sunset
Sun -- 09:28 PM PDT     0.69 feet Low Tide
Sun -- 10:00 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.44.65.55.85.54.83.82.82.22.12.53.44.65.66.36.56.15.13.82.41.40.80.81.4

Tide / Current Tables for Brookings, Chetco Cove, Oregon
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Brookings
Click for Map
Sun -- 03:02 AM PDT     5.82 feet High Tide
Sun -- 07:07 AM PDT     Sunrise
Sun -- 08:46 AM PDT     2.06 feet Low Tide
Sun -- 11:31 AM PDT     Moonrise
Sun -- 02:47 PM PDT     6.53 feet High Tide
Sun -- 07:10 PM PDT     Sunset
Sun -- 09:32 PM PDT     0.69 feet Low Tide
Sun -- 10:00 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.34.65.55.85.64.83.82.92.22.12.53.44.55.66.36.56.15.13.82.51.40.80.81.3

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 (2,6,7,8)
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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.