Sunday, March24, 2019 L-36.com


Marine Weather and Tides
Country Club, CA

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 7:00AMSunset 7:21PM Sunday March 24, 2019 1:59 AM PDT (08:59 UTC) Moonrise 10:45PMMoonset 8:37AM Illumination 88% 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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PZZ530 San Pablo Bay, Suisun Bay, The West Delta And The San Francisco Bay North Of The Bay Bridge- 905 Pm Pdt Sat Mar 23 2019
Tonight..W winds 5 to 15 kt with gusts up to 25 kt... Becoming nw after midnight.
Sun..E winds 5 to 15 kt.
Sun night..S winds 10 to 20 kt with gusts up to 30 kt. Rain likely.
Mon..SW winds 20 to 30 kt with gusts up to 40 kt. Rain likely.
Mon night..E winds 5 to 10 kt. A chance of showers.
Tue..S winds 5 to 10 kt. A chance of showers.
Tue night..S winds around 10 kt. Rain.
Wed..SW winds 5 to 15 kt. Rain.
Thu..W winds 5 to 10 kt. A chance of showers.
PZZ500 905 Pm Pdt Sat Mar 23 2019
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... High pressure over the offshore waters will move south and east reaching the central coast on Sunday. Winds will shift to southerly on Sunday and increase ahead of a low pressure trough approaching from the west, light to moderate rain will accompany the trough Sunday evening through Monday evening. Northwest swell subsides on Sunday then increases Sunday night into Monday followed by another lull in swell prior to an increase in northwest to west swell Wednesday next week. Expect wet and chilly weather early to mid next week then drying by late week.


7 Day Forecast for Marine Location Near Country Club, CA
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location: 37.97, -121.37     debug


Area Discussion for - Sacramento, CA
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Fxus66 ksto 240550
afdsto
area forecast discussion
national weather service sacramento ca
1045 pm pdt Sat mar 23 2019

Synopsis
Dry Sunday, followed by more rain and mountain snow Monday into
early Tuesday. A stronger storm is possible Tuesday night through
Wednesday. Thunderstorms will be possible with each of the storms
Tuesday and Wednesday. Unsettled weather will continue Thursday and
Friday with possible showers and thunderstorms each day.

Discussion
Evening update: storm near the colusa wildlife refuge at 4 pm
exhibited a vr (rotational shear) value of 25 kts at 0.9 deg
elevation angle (highest value) at about 40 nm from kdax. This put
the value in the minimal mesocyclone range. Nice photo and video
clip of the rain-free base but could not tell from the photo if
there was indeed a funnel cloud (as reported by the public) or if it
was rotating after looking at the video. In any event, at 0.9
elevation, the beam was about 5000 ft agl, and given the forecast of
very low 0-1 km shear values today, we did not expect a touchdown,
using a probability threshold of less than 50 50 chance of a
touchdown today.

Now the precip is winding down as the upper trof axis shifts E of
the cwa. Clouds over most of the CWA are eroding as subsidence
sinking occurs behind the trof axis. Cloud cover should increase
over the CWA early tomorrow ahead of the trof nearing 135w. Could be
some patchy ground fog developing along the sac river vly TAF sites
around sunrise. Jhm

Previous discussion
Short term will be monitoring for thunderstorm development mainly
over the valley but some might be able to make it into the foothills
this afternoon into the early evening hours when the activity is
expected to die down. Thunderstorms will likely contain very heavy
rainfall and small hail.

The current system will continue to spread east tonight leading
to dry conditions for Sunday. The next systems timing is in
question at this time. The GFS is faster in spreading the rain
over the interior and to the southern areas than the slower nam
model. The winter storm watch is based on the faster timing so
adjustments may end up happening if the NAM wins out. The storm
will be cold enough to bring more snow to the western slopes with
possible travel problems. Unstable air over the valley may lead to
thunderstorms on Tuesday. The second system will be moving into
the region Tuesday night but there may be some enhancement ahead
of the main part of the storm as it begins to interact with left
over moisture from the first storm. This second storm will be the
bigger of the two storms.

Extended discussion (Wednesday through Saturday)
Little change to the forecast this afternoon. A pacific storm will
begin to spread widespread rain, mountain snow, and gusty winds over
the CWA Tuesday night into Wednesday morning. As the front moves
through on Wednesday, there will be chances for post- frontal
convection as shear, cape, total-totals, and lis look favorable.

This set up could be conducive for strong thunderstorms during this
time frame, thus we'll have to keep an eye on the forecast in the
coming days. As we head into Wednesday night and Thursday,
additional vort maxes and cyclonic flow will keep showers in the
forecast.

Beyond Thursday, chances for precipitation will be diminishing
as ridging builds over the eastern pacific extends into northern
california.

Aviation
Precip coming to an end as the upper trof axis shifts east of the
area. Skies will continue to clear as a weak area of high pressure
builds over the region. Light winds, lingering moisture, and clear
skies could promote fog development tonight. As a result, I have
opted to put some MVFR visibilities in for TAF sites at ksmf and
southwards. If fog doesn't develop, expectVFR conditions tonight
and tomorrow.

Sto watches warnings advisories
Winter storm watch from Monday morning through late Monday night
for western plumas county lassen park.

Winter storm watch from Monday afternoon through Tuesday morning
for west slope northern sierra nevada.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 28 mi41 min W 4.1 G 5.1 52°F 1023.2 hPa
PCOC1 - 9415144 - Port Chicago, CA 36 mi41 min S 6 G 8 57°F1023.6 hPa
SFXC1 - San Francisco Bay Reserve, CA 38 mi74 min Calm 47°F 1023 hPa44°F
MZXC1 - 9415102 - Martinez-Amorco CA 40 mi41 min S 5.1 G 6 57°F1023.6 hPa
UPBC1 40 mi41 min SSW 4.1 G 6
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 48 mi41 min SSW 4.1 G 5.1 51°F 1023.3 hPa
AAMC1 - 9414750 - Alameda, CA 51 mi47 min E 2.9 G 4.1 51°F 59°F1024 hPa

Wind History for Port Chicago, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Stockton, Stockton Metropolitan Airport, CA8 mi64 minN 010.00 miFair45°F42°F90%1023.5 hPa

Wind History from SCK (wind in knots)
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Last 24hrE5SE4S4SW3SW5CalmCalmCalmCalmSW5S33SW3NW4W76W10W8W10W7W5W6W6Calm
1 day agoE3E4CalmSE3CalmCalmSE4CalmCalmCalmCalmCalmCalmSE5SE7SE4NW4N3CalmCalmN5NE5NE3E6
2 days agoNW3CalmNW5NW4W4W3CalmNW7N7NW7NW8W6NW5NW7NW4NW6--NW9W7W8W3W3W4W6

Tide / Current Tables for Blackslough Landing, San Joaquin River, California
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Blackslough Landing
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Sun -- 03:14 AM PDT     0.46 feet Low Tide
Sun -- 07:03 AM PDT     Sunrise
Sun -- 08:54 AM PDT     3.81 feet High Tide
Sun -- 09:37 AM PDT     Moonset
Sun -- 04:14 PM PDT     0.05 feet Low Tide
Sun -- 07:21 PM PDT     Sunset
Sun -- 10:05 PM PDT     3.12 feet High Tide
Sun -- 11:45 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.91.20.70.50.61.22.133.63.83.63.12.31.50.80.30.10.20.71.62.32.93.13

Tide / Current Tables for Vulcan Island .5 mi E, San Joaquin River, California Current
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Vulcan Island .5 mi E
Click for Map
Sun -- 12:50 AM PDT     -0.47 knots Max Ebb
Sun -- 03:57 AM PDT     0.00 knots Slack
Sun -- 06:35 AM PDT     0.74 knots Max Flood
Sun -- 07:03 AM PDT     Sunrise
Sun -- 09:36 AM PDT     Moonset
Sun -- 10:05 AM PDT     -0.00 knots Slack
Sun -- 01:23 PM PDT     -0.53 knots Max Ebb
Sun -- 05:05 PM PDT     0.00 knots Slack
Sun -- 07:21 PM PDT     Sunset
Sun -- 07:48 PM PDT     0.58 knots Max Flood
Sun -- 11:05 PM PDT     -0.00 knots Slack
Sun -- 11:45 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.4-0.5-0.4-0.200.40.70.70.60.30-0.2-0.4-0.5-0.5-0.4-0.3-00.30.50.60.50.30

Weather Map and Satellite Images
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wmap_P
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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Sacramento, CA (4,6,7,8)
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Ground Weather Radar Station Sacramento, CA
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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.