Tuesday, October20, 2020
Privacy Policy
L-36.com

Marine Weather and Tides
Etna, CA

Version 3.4
NOTICE
8/26/2020 The 7 day forecast is taking about 5 seconds to load but it will eventually load. NOAA is still working on it.
8/18/2020 NOAA continues to have trouble. Wind guest will occasionally be left off graphs. I am working with NOAA to resolve the issue.
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
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.

Sunrise 7:28AMSunset 6:22PM Tuesday October 20, 2020 7:40 AM PDT (14:40 UTC) Moonrise 11:15AMMoonset 8:32PM Illumination 15% 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
    EDIT      (on/off)   Help
PZZ450 Pt St George To Cape Mendocino Out 10 Nm- 814 Pm Pdt Mon Oct 19 2020
.small craft advisory in effect through Thursday evening...
Tonight..N winds 10 to 20 kt. Gusts up to 30 kt. Waves nw 8 ft at 8 seconds.
Tue..N winds 10 to 20 kt. Gusts up to 30 kt. Waves N 7 ft at 7 seconds.
Tue night..N winds 15 to 25 kt. Waves N 8 ft at 7 seconds.
Wed..N winds 20 to 30 kt. Waves N 9 ft at 9 seconds.
Wed night..N winds 20 to 30 kt. Waves N 12 ft at 10 seconds.
Thu..N winds 15 to 25 kt. Waves N 10 ft at 10 seconds.
Fri..N winds 5 to 15 kt. Waves nw 5 ft at 9 seconds.
Sat..N winds 10 to 15 kt. Waves nw 6 ft at 10 seconds.
PZZ400 814 Pm Pdt Mon Oct 19 2020
Synopsis for northern california waters..Northerly winds and steep, short-period seas will continue into Tuesday, but will increase substantially later Tuesday into Wednesday as strong high pressure builds offshore. Gale force winds will be likely Wednesday and Thursday for the outer waters, with somewhat lesser but still locally hazardous conditions for parts of the inner waters.


7 Day Forecast for Marine Location Near Etna, CA
   Hourly   EDIT   Help
location: 41.34, -123.02     debug


Area Discussion for - Medford, OR
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
FXUS66 KMFR 201019 AFDMFR

Area Forecast Discussion National Weather Service Medford OR 319 AM PDT Tue Oct 20 2020

DISCUSSION. A strong upper ridge is centered out near 40N and 140W. This will keep the area in northwest flow aloft through the rest of this week into this weekend. A couple of frontal systems, one Tuesday night into Wednesday and another one Friday night into Saturday, will move through the PacNW during this time frame. Each of these fronts will bring an increase in winds, especially to the East Side, but also to the slopes/ridges from the Cascades westward. Neither front is especially moist, since they are both originating from Alaska/NW Canada. Also for this reason, though, they will both feature chilly air masses following them. The air mass behind the first front will likely bring the first widespread frost/freeze of the season to the valleys west of the Cascades Wednesday night into Thursday morning.

Today will be similar to yesterday, with fair weather and highs about 5-10 degrees above normal. Stratus/fog has formed again this morning in the Umpqua Basin, and is expected to build within the coastal valleys by daybreak, but it shouldn't be deep enough this morning to spill over into the Rogue Valley. These clouds should dissipate by afternoon, but mid to high level clouds will begin to move in later in the day.

The first front will move through late tonight through Wednesday. Precipitation will be limited though with any chances remaining mostly north of the Umpqua Divide and north of Crater Lake. It will bring a period of gusty north to northwest winds Wednesday afternoon and evening for most areas with winds turning to the northeast Wednesday night. The air mass will be chilly, but winds will probably stay up over the slopes/ridges at night, while the valleys decouple from the boundary layer flow. This will allow temperatures to drop into the 20s and low 30s over many west side valleys. This is about the time of year we'd expect our growing season to end with the average date of the first freeze being October 26 here at Medford. We've issued a Freeze Watch at NPWMFR to highlight this risk. A chilly, but dry day is expected Thursday, followed by another cold night Thursday night.

The next frontal system will be a bit stronger, so expect another bout of gusty winds Friday night into Saturday and there may be some light precipitation with this one. But, the best precipitation chances are expected to be to our north and east. The fall-like conditions are expected to continue into this weekend with cold mornings and cool afternoon.

Looking ahead into next week, model solutions are depicting increasing chances for east winds with a drying and warming trend as the offshore ridge builds east into the western US. Confidence is good regarding the development of the overhead ridge, but there is more uncertainty regarding the duration of its residency. Most ensemble members keep the ridge, and therefore warm and dry conditions, in place through the end of the term. A few members, however, break the ridge down and introduce some rain chances around midweek. Suspect this may be a bit optimistic given the longevity of a ridge of this amplitude and strength, so have trended the forecast drier and warmer through the end of the forecast term. -Spilde/BPN

AVIATION. For the 20/12Z Areas of MVFR/IFR expected in the Umpqua Basin overnight and this morning. Also areas of IFR/LIFR are expected at the coast and in the coastal valleys overnight and this morning. Low cigs will lift to VFR in the late morning and early afternoon. It also can't be ruled out that fog/ freezing fog will return to KLMT as it did on the 19th, so have included it in the TAF for overnight and early this morning. Elsewhere expect VFR through the TAF period. -CC

MARINE. Updated 230 AM PDT Tuesday, 20 Oct 2020 . The thermal trough pattern will persist into Friday bringing gusty north winds and steep to very steep seas. Northerly winds will weaken slightly this afternoon into tonight as a weak front moves across the area. Winds will then strengthen Wednesday into Thursday, possibly reaching gales south of Port Orford. Conditions are expected to temporarily improve on Friday, ahead of a cold front Friday night into Saturday morning. Then north winds are expected to strengthen Saturday afternoon into Sunday and seas build. -CC

FIRE WEATHER. Updated 200 AM PDT Tuesday Oct 19 2020 .

Although we are expecting a couple of fronts to pass through the area over the next several days, precipitation chances will be limited and rainfall amounts should trend towards the lighter side. The primary concern over the next week will be the winds accompanying these front, and the east winds likely to develop between and after their passage.

The first of these fronts will approach the area later today into Wednesday, producing gusty winds across the East Side and over the higher terrain along and west of the Cascades. Rain chances will be limited to the coast and the Umpqua Basin, and while gusty winds are likely, humidities should be high enough to quell any elevated fire concerns.

After the front passes, the thermal trough is expected to intensify late Wednesday into Thursday, resulting in breezy east to northeast winds, particularly over the ridgelines of the Cascades, Siskiyous, and the southern Coastal Ranges. Humidities will suffer, and some low recoveries are possible should the subsidence inversion lower enough, but the event should be short- lived with humidities just high enough to keep us above critical thresholds.

The next front arrives Friday into Saturday, and once again, should produce some breezy winds over the higher terrain and the East Side. Precipitation chances will be a bit more robust and should spread over most of the forecast area, but amounts are expected to be light, with wetting rains less likely from north to south, especially outside of the coast, the Umpqua Basin and the western slopes of the Cascades.

Early next week, the large amplitude ridge over the western Pacific is expected to push east, building in over the region by Monday. We are likely to see the thermal trough return in force, with east to northeast winds developing by late Sunday. Model guidance suggests this to be a more long-lived event, with dry conditions and widespread moderate to poor recoveries expected through the remainder of the forecast term. Fire weather concerns next week will hinge on rainfall amounts and coverage with the preceding fronts. While winds are not at this time expected to be exceptionally strong, the event does bear watching over the coming forecast cycles. -BPN

MFR WATCHES/WARNINGS/ADVISORIES. OR . Freeze Watch from late Wednesday night through Thursday morning for ORZ023-024-026.

CA . Freeze Watch from late Wednesday night through Thursday morning for CAZ080>082.

Pacific Coastal Waters . Gale Watch from Wednesday afternoon through late Thursday night for PZZ356-376. Small Craft Advisory until 5 PM PDT Friday for PZZ356-376. Small Craft Advisory until 5 AM PDT early this morning for PZZ350-370. Small Craft Advisory from 5 AM Wednesday to 5 PM PDT Friday for PZZ350-370. Hazardous Seas Warning until 5 AM PDT early this morning for PZZ376.


Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CECC1 - 9419750 - Crescent City, CA 68 mi52 min N 6 G 8 56°F 53°F1017.4 hPa
HBYC1 - 9418767 - North Spit, CA 75 mi64 min 52°F1016.9 hPa
46244 - Humboldt Bay, North Spit, CA 77 mi44 min 53°F7 ft

Wind History for Crescent City, CA
(wind in knots)    EDIT      (on/off)   Help
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
Last
24hr
S2
--
S3
S5
S3
S3
SE4
N12
G16
N12
G16
N5
G9
NE5
E3
G6
W2
S4
SE4
SE2
NE3
N3
N8
NW3
N5
N6
N7
N7
1 day
ago
N5
N6
G10
N9
N8
N11
G14
NW14
G19
N14
G20
N16
G21
N14
G23
N14
G18
N12
G18
N14
G20
N10
G21
N11
G16
N4
G8
E2
NE2
E1
N4
NE1
--
N3
--
SE5
2 days
ago
N7
N7
NW11
G14
N10
G13
N15
G21
N14
G19
N16
G23
N16
G20
N12
G25
N13
G17
N12
G16
N11
G14
N9
G14
N11
N7
G13
N8
G11
N8
G11
NE3
E3
NW4
N4
N6
N7
N8
G11

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports. Follow links for more data.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Mount Shasta, CA37 mi44 minN 010.00 miFair48°F37°F68%1020.8 hPa

Link to 5 minute data for KMHS

Wind History from MHS (wind in knots)
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
Last 24hrCalmCalm3364--44NW7--Calm4CalmCalm4Calm5343Calm3Calm
1 day agoCalm3----CalmW8
G17
55655NW6543CalmCalmCalm----------Calm
2 days agoCalmCalm4463W845N8
G19
4364NW6NE3--3CalmCalmCalm4NW75

Tide / Current Tables for Trinidad Harbor, California
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Trinidad Harbor
Click for Map
Tue -- 03:16 AM PDT     6.02 feet High Tide
Tue -- 07:34 AM PDT     Sunrise
Tue -- 08:31 AM PDT     2.57 feet Low Tide
Tue -- 12:18 PM PDT     Moonrise
Tue -- 02:30 PM PDT     7.45 feet High Tide
Tue -- 06:27 PM PDT     Sunset
Tue -- 09:35 PM PDT     -0.91 feet Low Tide
Tue -- 09:38 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
2.64.35.565.85.14.23.22.72.63.24.35.56.77.47.46.65.23.41.60.1-0.8-0.8-0.2

Tide / Current Tables for Arcata Wharf, Humboldt Bay, California
   EDIT      (on/off)   Help   One Week of Data
Arcata Wharf
Click for Map
Tue -- 04:24 AM PDT     5.96 feet High Tide
Tue -- 07:34 AM PDT     Sunrise
Tue -- 09:36 AM PDT     2.62 feet Low Tide
Tue -- 12:17 PM PDT     Moonrise
Tue -- 03:32 PM PDT     7.87 feet High Tide
Tue -- 06:27 PM PDT     Sunset
Tue -- 09:38 PM PDT     Moonset
Tue -- 10:47 PM PDT     -0.91 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
0.82.44.15.35.95.95.24.33.42.72.73.34.45.877.87.87.15.73.920.4-0.7-0.9

Weather Map
       (on/off)   Help Weather Map
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
Ground Weather Radar Station Medford, OR
   (on/off)   Help
weather_mapweather_map weather_map


Cookie Policy:
This website uses cookies to save your settings. No personal information is saved. I do not collect statistics on your visit. You can disable cookies in your browser if you like but it is not recommended for this site. I do not sell cookies. Go to a bakery for that. In fact I do not sell anything. To disable cookies from L-36.com, please refer to the Help button in your browser.
Privacy Policy:
I do not sell or share any user data or anything else for that matter. The only personal information I save is in the site log which has a line for each page view which includes the IP address your browser sends in the header as well as which page you requested. I use this to block hackers and other bad actors. I do not use this raw data to create profiles on users. I periodically delete the log files. Google supplies the ads on this site. Because I do not track who you are, I cannot customize how these ads are served. They may be personalized to improve the ad experience. If you do not want personalized ads, please adjust the settings on the Google site HERE. NOTE: The best I can determine, this site is not subject to CCPA but I am doing my best to comply anyway.
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 numerous 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.