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Marine Weather and Tides
Fort Jones, CA

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 7:30AMSunset 4:40PM Saturday December 14, 2019 11:12 PM PST (07:12 UTC) Moonrise 7:23PMMoonset 9:51AM Illumination 87% 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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PZZ450 Pt St George To Cape Mendocino Out 10 Nm- 836 Pm Pst Sat Dec 14 2019
.small craft advisory in effect through Sunday evening...
Tonight..NW winds 5 to 15 kt. Waves W 12 ft at 14 seconds. Showers likely.
Sun..S winds 5 to 10 kt. Waves W 11 ft at 13 seconds. Slight chance of showers.
Sun night..SE winds 5 to 10 kt. Waves W 10 ft at 13 seconds. Chance of rain.
Mon..SE winds 5 to 10 kt. Waves W 8 ft at 12 seconds.
Mon night..S winds 5 to 10 kt. Waves W 8 ft at 15 seconds.
Tue..SE winds 5 to 15 kt. Waves sw 5 ft at 11 seconds...and W 11 ft at 18 seconds.
Wed..S winds 10 to 15 kt. Waves W 14 ft at 15 seconds.
Thu..S winds 20 to 25 kt. Waves sw 7 ft at 9 seconds...and nw 6 ft at 13 seconds.
PZZ400 836 Pm Pst Sat Dec 14 2019
Synopsis for northern california waters..Winds will continue to shift to the northwest the rest of this evening, followed by generally light to moderate breezes for the remainder of the weekend and early next week. Otherwise, a large, long-period northwest swell will very slowly subside into next week.


7 Day Forecast for Marine Location Near Fort Jones, CA
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location: 41.67, -122.83     debug


Area Discussion for - Medford, OR
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FXUS66 KMFR 150333 AFDMFR

Area Forecast Discussion National Weather Service Medford OR 733 PM PST Sat Dec 14 2019

UPDATE. Updated Marine and Aviation sections. The only changes to this evenings forecast was to add an additional small, broad amount of snow coverage along the Siskiyous and Cascades near Klamath falls. On radar, the most recent bands have been falling apart after moving over Coos County, but a few isolated showers are pushing further inland causing this change to be made.

The surface low that is responsible for this precipitation is visible on IR and the nighttime RBG satellite products. The low is just offshore of Florence and will continue to move onshore through the night with slight southerly movement. This will shift any linger showers south, mainly near the Oregon, California border.

Models are trending down cloud coverage for tomorrow afternoon and more places may be likely to get some much desired sunlight. With this, the high temps will likely need to be nudged up a few degrees. However, this break in cloud cover will be fairly brief, as another weak front will graze the coast Tomorrow night. More information on this and the active weather pattern following it can be found in this afternoons discussion below. -Miles

PREV DISCUSSION. /Issued 159 PM PST Sat Dec 14 2019/

DISCUSSION . The latest visible image clearly shows an upper through moving in from the northwest. Precipitation ahead of it is already reaching the coast with Brookings and Gold beach reporting rain. Precipitation will continue to push inland early this evening with most centered along the coast, coastal mountains and northwest California. A weak surface low will follow the front late this evening and tonight. The models are in good agreement tracking the low through southwest Oregon and northwest California.

Snow levels this afternoon are expected to be around 3000 feet, then lowering to around 2500 feet tonight, but road snow accumulations are not expected to be a concern because were not expecting a significant amount of precipitation. For example up to an inch is expected over Siskiyou Summit, Lake of the Woods and Diamond Lake area from late this afternoon into early Sunday morning.

Sunday, there's some hint as warm frontal precipitation over the northwest part of the forecast area in the afternoon through Sunday night. However at the same time 500 mb heights will be on the rise as upper ridging builds in. For now kept in a slight chance to chance pops of the above mentioned area.

Monday will be dry as shortwave ridging builds into the area. If there's enough clearing, we could be dealing with low clouds and patchy to areas of fog later in the evening through the morning hours Sunday night through Tuesday.

The upper ridge axis shifts east Monday night into Tuesday as an upper trough approaches from the west. Models vary on the evolution and details, but the general consensus is for the upper trough to split which will limit the amount of precipitation. Most of Tuesday will be dry, but could not rule out a chance of rain along the coast late in the afternoon. -Petrucelli

EXTENDED DISCUSSION . 12Z Wednesday through 12Z Sunday.

Heading into Wednesday, the models are starting to come into consensus with a low strengthening in the Pacific and with high pressure building off the southern California coastline. This will set the stage for a strong atmospheric river (AR) hitting southern Oregon from roughly Thursday into perhaps Saturday. Given how low the rivers will be before the AR arrives, this AR will be more of a beneficial AR for building snow pack and avoiding serious flooding. At this time, some points on the Coquille river are projected to hit action stage, yet avoid flood. However, we are still quite far out from this event, so flooding still remains possible, especially on the Coquille river. Many of the rivers will likely experience some rapid rises between the 20th and 21st. As for building on the snow pack, we're expecting snow levels around 5000 to 6000 feet for most of this event. This will result in some travel concerns over the Cascade passes, specifically around Diamond Lake, Crater Lake and elevations above 6000 feet.

Eventually, this low will probably become more progressive and start to deepen and shift eastwards, this would be a good thing. The AR would then probably take aim towards Canada and Washington with the heavy precipitation shifting northwards. The other scenario is we stay at the receiving end of this AR and still see some significant precipitation well into Saturday. It's still too uncertain to say at this point what exactly will happen Saturday and beyond.

Overall, the potential for minor flooding along the Coquille remains a concern along with travel above 5000 to 6000 feet from Thursday into Saturday.

-Smith

AVIATION . For the 15/00Z TAFs . Rain will start to valley at most terminals this evening. Look for patchy fog and perhaps some LIFR visibilities later tonight in valleys west of the Cascades. East of the Cascades, we'll see some snow reduce visibilities to IFR thresholds. Eventually skies should clear up near the end of the TAF period on Sunday afternoon.

-Smith

MARINE . Updated 730 PM PST Saturday, 14 December 2019 . Heavy and steep long period swell will remain high into Sunday, with winds diminishing this evening and overnight. Seas will continue to diminish tonight into Sunday, finally subsiding below advisory criteria late Sunday into Monday. This will be short-lived, however, as another swell train moves into the waters Tuesday ahead of the next frontal system. This front will bring increasing southerly winds Tuesday night and Wednesday, and with building seas, conditions will likely become hazardous to small craft. BR-y

MFR WATCHES/WARNINGS/ADVISORIES. OR . None.

CA . None.

Pacific Coastal Waters . Small Craft Advisory until 10 PM PST Sunday for PZZ350-356-370-376.

MB/MB/MNF


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CECC1 - 9419750 - Crescent City, CA 72 mi60 min E 4.1 G 6 52°F1016.6 hPa
46027 - ST GEORGES - 8NM West Northwest of Crescent City, CA 83 mi42 min SE 12 G 18 48°F 53°F1017.1 hPa44°F
HBYC1 - 9418767 - North Spit, CA 96 mi96 min 53°F1017.4 hPa

Wind History for Crescent City, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Montague Siskiyou County Airport, CA21 mi19 minSSW 410.00 miMostly Cloudy34°F32°F92%1016.8 hPa

Link to 5 minute data for KSIY

Wind History from SIY (wind in knots)
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Last 24hrE4CalmN7N9NE6E3S5S3N7CalmCalmNW4CalmCalmN3E4NE8NE5NW3CalmW3CalmS4SW4
1 day agoCalmNE4NE3CalmNE5N5CalmCalmN3CalmCalmCalmNE3N6N7N7N7N5NE3NE4N7E3CalmNE4
2 days agoN3NE5NE5N4NE4N3NE7N4E4N4CalmCalmCalmSW9SW10W8W7SW7SE3CalmCalmS3CalmCalm

Tide / Current Tables for Crescent City, California
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Crescent City
Click for Map
Sun -- 02:14 AM PST     6.24 feet High Tide
Sun -- 07:12 AM PST     3.55 feet Low Tide
Sun -- 07:36 AM PST     Sunrise
Sun -- 10:45 AM PST     Moonset
Sun -- 12:57 PM PST     7.60 feet High Tide
Sun -- 04:46 PM PST     Sunset
Sun -- 08:08 PM PST     -0.80 feet Low Tide
Sun -- 08:36 PM PST     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.75.76.26.15.54.63.93.63.74.45.46.57.37.67.26.14.52.71-0.3-0.8-0.50.52

Tide / Current Tables for Crescent City, California (2) (expired 1989-12-31)
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Crescent City
Click for Map
Sun -- 02:14 AM PST     6.23 feet High Tide
Sun -- 07:12 AM PST     3.52 feet Low Tide
Sun -- 07:36 AM PST     Sunrise
Sun -- 10:45 AM PST     Moonset
Sun -- 12:57 PM PST     7.60 feet High Tide
Sun -- 04:46 PM PST     Sunset
Sun -- 08:08 PM PST     -0.82 feet Low Tide
Sun -- 08:36 PM PST     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.75.76.26.15.44.63.93.53.74.45.46.57.37.67.26.14.52.71-0.3-0.8-0.50.52

Weather Map
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wmap_P
GEOS Local Image of CentralWestCoast    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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
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.