Saturday, June23, 2018

Marine Weather and Tides
Scotia, CA

Version 3.4
What's New / NOTES
5/20/2018 -- NOAA is having problems with the data feed that I use to draw the graphs. They are aware of the issue and working to resolve it. Sometimes changing the location by about a mile will give a correct graph. 3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.

Sunrise 5:44AMSunset 8:53PM Saturday June 23, 2018 11:08 AM PDT (18:08 UTC) Moonrise 3:46PMMoonset 2:08AM Illumination 78% Phase: Waxing Gibbous; Moon at 10 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 730 pm pdt Tue mar 13 2018 a marine weather statement has been issued for the following areas... Coastal waters from pt. St. George to cape mendocino ca out 10 nm... Humboldt bay bar... At 729 pm pdt, doppler radar indicated a shower, capable of producing winds to around 30 knots. This shower was located 9 nm north of cape mendocino, moving northeast at 20 knots. Precautionary/preparedness actions... Water spouts are possible along with stronger Thunderstorms...locally higher waves...and lightning strikes. Boaters should seek safe harbor immediately until these storms pass. Mariners can expect gusty winds to around 30 knots...locally higher waves...and lightning strikes. Boaters should seek safe harbor immediately until this storm passes. && lat...lon 4080 12411 4080 12418 4075 12419 4073 12423 4070 12421 4068 12422 4070 12427 4071 12427 4065 12431 4063 12429 4063 12424 4062 12426 4063 12432 4047 12439 4057 12459 4095 12437 4086 12417 4076 12423 4085 12416 4082 12409 PZZ400 830 Am Pdt Sat Jun 23 2018
Synopsis for northern california waters..Gale force wind gusts are expected across the outer waters and near cape mendocino through the weekend. The strong winds will be accompanied by steep building seas. Robust northerlies and hazardous seas will persist through next week.

7 Day Forecast for Marine Location Near Scotia, CA
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location: 40.25, -124.37     debug

Area Discussion for - Eureka, CA
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Fxus66 keka 231220
area forecast discussion
national weather service eureka ca
520 am pdt Sat jun 23 2018

Synopsis Hot temperatures will continue across interior
northern california this weekend, accompanied by widespread
sunshine. Northerly breezes and marine air will keep coastal areas
cool. Dry weather with seasonable temperatures will hold through
the upcoming week.

Discussion Stratus is limited mainly to areas between trinidad
and fortuna, but some patches are found along the del norte coast
as well. Expect the stratus to linger into the late morning hours,
before clearing out as we head into early afternoon. Northerly
winds will be gusty once again along the coast this afternoon as
the clouds give way, representative of the strong pressure
gradient between a thermal trough over inland northern california
and high pressure over the eastern pacific. Meanwhile, upper-level
ridging will amplify over california today, resulting in more hot
weather for areas inland from the influence of marine air.

Temperatures will peak between 100 and 105 degrees for the
interior valleys of mendocino county, where a heat advisory will
be in effect this afternoon. High temperatures will also likely
be near 100 degrees in the hotter valleys of trinity county as

Heading into tonight and Sunday morning, the surface thermal
trough will shift toward the coast resulting in light offshore
flow. This may be enough to keep stratus from redeveloping tonight
along the humboldt and del norte coast, and the mendocino coast
will continue to be clear. The thermal trough will shift back
inland Sunday afternoon, allowing for a push of marine air to
begin filtering inland. This will occur as an upper-level trough
tracks eastward across washington and oregon, and the tail-end of
a cold front tries to clip northern california. Temperatures for
most of northwest california Sunday afternoon will likely drop
back 2 to 5 degrees from todays levels, but trinity county may
actually experience the warmest day of this stretch. Meanwhile,
coastal stratus will likely become more expansive Sunday evening
and especially heading into Monday, possibly accompanied by some

Upper-level ridging may build temporarily on Tuesday, allowing
for a warmer day inland and less expansive coastal stratus.

Another couple of upper-level troughs will push into the pacific
northwest for the middle and end of the upcoming week. This will
allow for the inland heat to take a step back, with generally just
some 80s in the warmest valleys. Otherwise, continue to expect
dry weather through the upcoming week, with little in the way of
clouds aside from the coastal stratus and fog. Aad

Fire weather The risk of wildfire across interior northern
california will increase today into Sunday with the hot and dry
weather. However, fuel moisture and ercs are running near normal
for late june, and have not reached critical levels, though they
have been drying fast with seasonal grasses curing. For this
afternoon, drying offshore winds will bring afternoon humidity
into the teens. Rh values will only recover into the 30s and upper
20s across the mountainous terrain of western mendocino national
forest and the trinity alps by Sunday morning. However, winds
outside of the higher mountain ridges will be fairly light, which
along with non- critical fuels, should limit the potential for
fire spread. Greater potential exists for wildfires to our
southeast, across the sacramento valley and foothills, as well as
the north bay hills. Aad

Aviation Stratus continues to impact acv and cec this morning
with ifr lifr ceilings and visibilities. As warm air and easterly
winds aloft continue to build, the marine layer will continue to
shrink. What this means is that ceilings and visibilities may reduce
even more this morning however once the Sun rises and winds begin to
increase at the surface acv and cec should clear out by late this
morning. Expect some gusty northerly winds at all three TAF sites
this afternoon as well. The most likely scenario for fog and stratus
this evening is that with very warm air aloft, easterly winds aloft,
and drying at the surfaceVFR conditions should prevail at cec and
acv tonight. The caveat is that if clouds or fog do return to these
terminals ifr to lifr conditions should be expected due to the
condensed marine layer. At the moment will stay optimistic with the
taf leaving acv and cecVFR this evening. Wci

Marine Latest ascat pass this morning indicated
gale conditions across the southern outer waters and near gale
conditions across the northern outer waters. Winds across the outer
waters and near CAPE mendocino will decrease slightly on Sunday
which will allow a respite from gale conditions before gale
conditions become more likely by late Monday morning and persist
through at least mid week. These strong northerly winds are also
leading to steep and hazardous northerly wind waves. At least small
craft condition winds and seas will be experienced across all marine
zones through the end of next week. Wci

Eka watches warnings advisories
Ca... Heat advisory from 11 am this morning to 9 pm pdt this evening
for caz110-111-113.

Northwest california coastal waters... Small craft advisory until
3 am pdt Monday for pzz450-455.

Gale warning until 9 am pdt Sunday for pzz470-475.

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46213 - Cape Mendocino, CA (094) 19 mi68 min 50°F9 ft
46022 - EEL RIVER - 17NM West-Southwest of Eureka, CA 34 mi48 min N 14 G 18 55°F 54°F1016.8 hPa54°F
46244 - Humboldt Bay, North Spit, CA 45 mi68 min 52°F8 ft

Wind History for North Spit, Humboldt Bay, CA
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1 day
2 days

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Fortuna Rohnerville Airport, CA24 mi88 minWNW 69.00 miOvercast57°F53°F88%1016.3 hPa

Wind History from FOT (wind in knots)
Last 24hrW11W13W15
1 day agoNW7W10W10W14W16
2 days agoW3NW8NW11NW10NW10W9NW9NW8NW6NW8NW5NW3NW5NW4NW4N4NW5NW4N4CalmCalmN4N6N4

Tide / Current Tables for Cape Mendocino, California
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Cape Mendocino
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Sat -- 03:08 AM PDT     Moonset
Sat -- 03:15 AM PDT     0.44 feet Low Tide
Sat -- 05:48 AM PDT     Sunrise
Sat -- 09:14 AM PDT     3.97 feet High Tide
Sat -- 02:38 PM PDT     1.75 feet Low Tide
Sat -- 04:46 PM PDT     Moonrise
Sat -- 08:50 PM PDT     6.04 feet High Tide
Sat -- 08:51 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Tide / Current Tables for Punta Gorda, California Current
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Punta Gorda
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Sat -- 03:08 AM PDT     Moonset
Sat -- 03:46 AM PDT     0.00 knots Slack
Sat -- 05:48 AM PDT     Sunrise
Sat -- 06:52 AM PDT     0.90 knots Max Flood
Sat -- 09:40 AM PDT     -0.00 knots Slack
Sat -- 12:22 PM PDT     -0.67 knots Max Ebb
Sat -- 03:34 PM PDT     0.00 knots Slack
Sat -- 04:45 PM PDT     Moonrise
Sat -- 06:38 PM PDT     0.86 knots Max Flood
Sat -- 08:50 PM PDT     Sunset
Sat -- 09:24 PM PDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Weather Map and Satellite Images
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GOES 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.
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Wind Forecast for Eureka, CA (14,3,4,5)
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Ground Weather Radar Station Eureka, CA
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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 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 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.