Tuesday, January26, 2021
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Marine Weather and Tides
Ferndale, CA

Version 3.4
NOTICE
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 7:30AMSunset 5:28PM Tuesday January 26, 2021 5:39 PM PST (01:39 UTC) Moonrise 3:26PMMoonset 6:10AM Illumination 98% Phase: Waxing Gibbous; Moon at 14 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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PZZ410 1119 Am Pdt Mon Sep 16 2019
.isolated strong Thunderstorms over the coastal waters... The areas affected include... Coastal waters from point saint george to cape mendocino ca out 60 nm... At 1114 am, doppler radar indicated a few strong Thunderstorms, capable of producing wind gusts to around 30 knots, from 5 nm northwest of orick to 45 nm west of patrick's point. These storms are moving southeast at 10 knots. Precautionary/preparedness actions... Mariners can expect gusty winds to around 30 knots, locally higher waves, and lightning strikes. Boaters should seek safe harbor immediately until these storms passes. && lat...lon 4174 12416 4145 12406 4123 12411 4114 12416 4105 12415 4106 12414 4102 12411 4070 12426 4071 12426 4058 12435 4083 12572 4096 12565 4178 12460 4178 12426
PZZ400 214 Pm Pst Tue Jan 26 2021
Synopsis for northern california waters..Southerly winds reaching gale to storm force will continue through evening as a strong front moves through. These will quickly diminish behind the front, but remain southerly. Moderate southerlies are expected to last through much of the work week.


7 Day Forecast for Marine Location Near Ferndale, CA
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location: 40.43, -124.42     debug


Area Discussion for - Eureka, CA
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FXUS66 KEKA 262255 AFDEKA

AREA FORECAST DISCUSSION National Weather Service Eureka CA 255 PM PST Tue Jan 26 2021

SYNOPSIS. A significant winter storm will bring widespread rain along with heavy snow and strong winds through this evening with lingering rain and snow showers into Thursday. Additional rain and snow is expected into the weekend and early next week.

DISCUSSION. A potent storm system continues to move toward the coast. Widespread rain and mountain snow precedes the storm system, with inland snow levels running between 1500 and 2000 feet. Snow levels are forecast to gradually rise through the night, but some valleys may continue to have trapped cold air producing lower snow levels. Confidence remains high for snow levels to range from 1000 to 1500 from Trinity County into interior Del Norte and Humboldt, supporting 1-2 feet of snow along much of the Hwy 299 corridor from Berry Summit eastward to Weaverville. South of Hwy 36, the bulk of snowfall will be above 2000-2500 ft for southern Humboldt and Trinity and above 2500-3000 ft from interior Mendocino into Lake County. Overall, the rain and snow forecast remains generally unchanged. Wind Advisories continue into the evening hours for low- level wind gusts up to 50 mph and higher elevation gusts over 60 mph.

A line of thunderstorms has developed about 50 NM off the North Coast, and this line is presently moving ESE. There are several weak rotational couplets along this line, and there have been indications of a possible meso-low with warming cloud tops to the SW and and increase in lightning to the E of the low well offshore Cape Mendocino. As a result, have expanded scattered thunderstorms across the N coastal waters into the coastal plain from Cape Mendocino to the OR/CA line. These thunderstorms have the potential to drag a strong low-level jet to the surface and produce winds in excess of storm force, in addition to isolated waterspouts. Around 130 PM, We issued a Special Marine Warning for portions of the coastal waters, and this line will continue to be monitored.

Overnight, activity will be briefly waning after the passing of an occluded front, before ramping back up as the parent upper-low rotates closer beginning in the early morning hours of Wednesday. Dynamics will favor a transition to convective showers at this time with a steepening lapse rate and weak instability, thus the threat for small hail will need to be monitored. It appears that the best chance of thunder will shift S of Cape Mendocino with this feature.

The highest precipitable water anomalies will sweep through late this afternoon, but will be highest S of Cape Mendocino where lower elevations can around 2.5 inches of rain in a six hour period. This area will need to be monitored for areal flooding issues through Thursday. Snow elevations will begin to lift later Wednesday. Blocked by a building ridge to the east, the upper low will lurk offshore while quickly filling, keeping the weather unsettled through Thursday. /JJW&SEC

Long Term (Friday through Monday). The ensembles take a break in the heavier rain on Friday as a transitory ridge moves through the area. There will likely be some light showers around, but overall it is expected to the driest day of the week. Friday night or Saturday models are showing a weak front that moves through fairly quickly. Snow levels with this system are expected to be range from 3,000 to 4,000 feet. Once this moves through will likely be another short break in the precip at some point on Saturday.

Sunday into Monday the ensembles, especially the GEFS, are starting to show a weak AR stalling out over the area and lasting for 24 to 30 hours over the area. This system looks looks quite a bit warmer than the ones we have been seeing with snow levels rising over 4,000 feet. This is still a ways out, but there is the potential for some main steam river flooding with this system. MKK

AVIATION. A strong frontal boundary brought rain and increasing southerly winds across the NWRN California late this morning. Rain is expected to intensify by evening as the cold front moves over the CWA. VFR to MVFR conditions with occasional dipping to IFR at times in periods are expected through the TAF period at all terminals as it moves through. Strong surface wind gusts around 35 to 45 mph is impacting the coastal terminals, reaching 50 mph at CEC during the afternoon. Low level wind shear has developed at the coastal terminals reaching 60 kt at 2000 feet. Gusty southerly winds are also expected at KUKI by late this afternoon, however the strongest winds are forecast to remain 1000 to 2000 feet above MSL. Thus, low level wind shear will also be possible at KUKI through late evening. Behind the front wind will diminish this evening and rain will become more showery later this evening. MVFR conditions may linger through the evening. ZVS

MARINE. Gale to storm force southerlies has develop across the waters as a strong frontal system moves through. Sustained wind speeds of 35 to 45kt with gusts up to around 55 kts will continue through this evening. The Storm Warning for the northern outer waters is in effect through this evening, with Gale Force Warning for the rest of the waters as well. There will be a brief lull late this evening and into tonight, but southerlies will quickly ramp up again Wednesday morning. Mostly fresh to strong breezes are expected with this second burst and will weaken as we head into the overnight period on Wednesday. Northerlies will develop on Thursday, but this will be shortlived, as southerlies redevelop ahead of the next system approaching the area later on Friday. Models are then keeping winds elevated over the waters, mostly in the moderate to fresh breeze range through at least the weekend.

Short-period seas has developed throughout the coastal waters in response to the rapid increase of the winds. A west to northwest swell around 10 to 13 feet at 13 seconds will continue decay through late evening. An additional westerly swell is set to replace the decaying swell on Wednesday. This second swell will peak around 17 to 19 feet at 16 seconds Wednesday evening. Guidance then shows yet another westerly swell moving through the waters overnight on Friday. MKK/ZVS

EKA WATCHES/WARNINGS/ADVISORIES. CA . Wind Advisory until 7 PM this evening for CAZ101>106-109-110-112-113. Winter Storm Warning until noon Wednesday for CAZ102-104>108-110-111-113>115. Wind Advisory from 6 PM this evening to midnight tonight for CAZ111-115.

NORTHWEST CALIFORNIA COASTAL WATERS . Wind Advisory until 7 PM this evening for PZZ410-415. Gale Warning until 7 PM this evening for PZZ450. Storm Warning until 7 PM this evening for PZZ470. Gale Warning until 9 PM this evening for PZZ455-475.

Visit us at https://www.weather.gov/eureka

Follow us on Facebook and Twitter at: https://www.facebook.com/NWSEureka https://www.twitter.com/NWSEureka

For forecast zone information see the forecast zone map online: https://www.weather.gov/images/eka/zonemap.png


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46213 - Cape Mendocino, CA (094) 19 mi344 min 50°F12 ft
46022 - EEL RIVER - 17NM West-Southwest of Eureka, CA 23 mi320 min SSE 29 G 37 45°F 50°F1002 hPa39°F
NJLC1 25 mi376 min SSE 51 G 76 44°F
HBYC1 - 9418767 - North Spit, CA 26 mi364 min 48°F1004.9 hPa
HBXC1 27 mi340 min 48°F
46244 - Humboldt Bay, North Spit, CA 32 mi344 min 51°F10 ft
TDPC1 46 mi340 min 48°F

Wind History for North Spit, Humboldt Bay, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Fortuna Rohnerville Airport, CA17 mi50 minESE 26 G 335.00 miOvercast and Windy37°F36°F93%998 hPa

Link to 5 minute data for KFOT

Wind History from FOT (wind in knots)
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Last 24hrCalm----SW4CalmSE5SE7SE9SE8SE6SE10SE9E13E13
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CalmNW6W6W5W5NW3N6NW7NW6NW3NW6W4SW4W5W4NW5NW6NW5NW14W7NW10Calm
2 days agoNW6NW5NW5CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmSE6E7SE7E6E9CalmNW17
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Tide / Current Tables for Cape Mendocino, California
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Cape Mendocino
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Tue -- 03:18 AM PST     3.23 feet Low Tide
Tue -- 06:10 AM PST     Moonset
Tue -- 07:31 AM PST     Sunrise
Tue -- 08:46 AM PST     6.14 feet High Tide
Tue -- 03:26 PM PST     Moonrise
Tue -- 04:21 PM PST     -0.54 feet Low Tide
Tue -- 05:29 PM PST     Sunset
Tue -- 11:13 PM PST     4.64 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.23.83.53.23.33.84.65.466.15.84.93.62.20.8-0.1-0.5-0.40.21.12.23.34.24.6

Tide / Current Tables for Punta Gorda, California Current
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Punta Gorda
Click for Map
Tue -- 12:47 AM PST     -0.52 knots Max Ebb
Tue -- 03:55 AM PST     0.00 knots Slack
Tue -- 06:09 AM PST     Moonset
Tue -- 06:46 AM PST     0.71 knots Max Flood
Tue -- 07:31 AM PST     Sunrise
Tue -- 09:31 AM PST     -0.00 knots Slack
Tue -- 12:55 PM PST     -1.40 knots Max Ebb
Tue -- 03:26 PM PST     Moonrise
Tue -- 05:00 PM PST     0.00 knots Slack
Tue -- 05:29 PM PST     Sunset
Tue -- 08:05 PM PST     1.05 knots Max Flood
Tue -- 11:24 PM PST     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.4-0.5-0.4-0.200.40.60.70.60.2-0.2-0.8-1.3-1.4-1.3-1-0.5-00.50.91.110.70.2

Weather Map
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GEOS Local Image of CentralWestCoast    EDIT
NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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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.