Saturday, December15, 2018 L-36.com


Marine Weather and Tides
Bodega Bay, 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 7:19AMSunset 4:52PM Friday December 14, 2018 9:36 PM PST (05:36 UTC) Moonrise 12:22PMMoonset 11:48PM Illumination 51% Phase: First Quarter Moon; Moon at 8 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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PZZ540 Coastal Waters From Point Arena To Point Reyes California Out To 10 Nm- 851 Pm Pst Fri Dec 14 2018
.small craft advisory in effect through late Saturday night...
Tonight..N winds 5 to 10 kt...becoming east 5 to 15 kt after midnight. Wind waves 2 ft or less. W swell 9 to 14 ft at 15 seconds. A chance of showers this evening. A slight chance of showers after midnight.
Sat..SE winds 15 to 25 kt with gusts up to 30 kt. Wind waves 3 to 5 ft. W swell 10 to 14 ft at 14 seconds. A chance of showers.
Sat night..SE winds 15 to 25 kt with gusts up to 30 kt. Wind waves 4 to 6 ft. W swell 6 to 9 ft at 13 seconds. Showers likely.
Sun..SE winds 25 to 30 kt with gusts up to 40 kt. Wind waves 6 to 9 ft. W swell 8 to 13 ft at 17 seconds. Rain.
Sun night..SW winds 20 to 30 kt with gusts up to 40 kt. Wind waves 5 to 8 ft. W swell 15 to 20 ft at 21 seconds. Rain.
Mon..SE winds 5 to 15 kt. Wind waves 2 ft or less. W swell 17 to 20 ft.
Mon night..S winds up to 10 kt. Wind waves 2 ft or less. W swell 14 to 17 ft.
Tue..S winds up to 10 kt. Wind waves 2 ft or less. W swell 10 to 12 ft.
Wed..SE winds up to 10 kt. Wind waves 2 ft or less. W swell 10 to 15 ft.
PZZ500 851 Pm Pst Fri Dec 14 2018
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... A moderate west to northwest swell will build tonight and result in hazardous conditions through Saturday. Generally light winds will prevail tonight as a weak frontal boundary remains stalled over the region. South to southeasterly winds will then increase Saturday into Sunday ahead of the next and stronger approaching pacific storm system. An even larger and more powerful long period west to northwest swell will move in Sunday afternoon through Monday.


7 Day Forecast for Marine Location Near Bodega Bay CDP, CA
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location: 38.31, -123.07     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 150516
afdmtr
area forecast discussion
national weather service san francisco bay area
916 pm pst Fri dec 14 2018

Synopsis A weak frontal system will remain over the san
francisco bay area through Saturday, producing scattered light
showers, mainly over the north bay. A stronger and wetter system
is forecast to impact the entire region Sunday and Sunday night,
with widespread moderate rain. Brief heavy rain is possible Sunday
afternoon and evening. In addition, gusty south winds are likely
Sunday and Sunday evening, mainly near the coast and in the hills.

Showers will taper off by late Sunday night and end by midday
Monday. A very large wave train arrives late Sunday into Monday.

Dry and mild weather is forecast from Monday afternoon through
much of next week.

Discussion As of 9:15 pm pst Friday... Today's weak frontal
system produced nearly a half inch of rain in portions of the
north bay, but rainfall amounts were generally less than a tenth
of an inch for locations south of the golden gate. The front that
produced today's light rainfall has stalled over the san francisco
bay area this evening, and is forecast to drift slowly northward
tonight and Saturday. Scattered light showers are forecast to
continue along the frontal boundary, from about san mateo county
northward tonight and Saturday morning and then primarily over the
north bay on Saturday afternoon and evening. For areas from santa
cruz and santa clara counties southward, the first half of the
weekend is expected to be mostly dry with mild temperatures.

Current satellite imagery shows a robust storm system dominating
the northeastern pacific. The models have shown good agreement and
consistency regarding this system, and so forecast confidence is
relatively high that moderate to locally heavy rain will fall
across most, if not all, of our forecast area Sunday and Sunday
night. Widespread light rain is forecast to begin spreading into
the north bay by late Saturday night and then increase in
intensity Sunday morning. It's likely that most precipitation will
remain confined to the north bay through Sunday morning. Then, on
Sunday afternoon and evening, a vigorous upper trough will
approach the coast and push the front to the south and east.

The upper trough will also likely enhance the surface front and
so Sunday afternoon and evening is when forecast intensity is
expected to peak, with at least a brief period of heavy rain
possible as the front sweeps through. The storm prediction center
indicates a general threat of thunderstorms across our area late
Sunday as colder air aloft arrives with the upper trough.

Thunderstorms chances are not currently in our forecast, but we
may need to consider adding them. It should be noted that the 00z
nam shows a trend towards decreased instability from previous
model runs, which would suggest a lower potential for
thunderstorms.

Post-frontal shower activity is forecast to continue through much
of Sunday night, but then taper off quickly from north to south on
Monday morning and end by midday as a shortwave ridge quickly
build across the region.

Rainfall totals with the Sunday Sunday night system are forecast
to range from 1 to 3 inches in the north bay and from 0.5-1.5
inches across the rest of the forecast area, except locally up to
2 inches in the santa cruz and santa lucia mountains.

Gusty southerly winds will develop ahead of the incoming system on
Sunday and continue quite strong and gusty through Sunday evening.

Strongest winds will be near the coast and in the hills where
local gusts of up to 40 mph are expected. Winds are not expected
to be strong enough to warrant wind advisories.

Longer range models agree that an upper ridge will maintain dry
and mild weather conditions across our region from Monday
afternoon through at least Thursday of next week.

From previous discussion... In addition to the rain and wind, the
incoming storm system will be responsible for bringing the
largest waves so far this season to the coast from late Sunday
through Monday. A high surf warning has been issued and is in
effect from 9am Sunday through 9pm Monday. The earlier start time
accounts for the arrival of the very long forerunner waves which
present a significantly increased risk of rip currents and sneaker
waves. Please review the beaches section for more information
about the upcoming high surf event.

Aviation As of 4:15 pm pst Friday... A mix ofVFR-MVFR
conditions expected to continue as visibilities and cloud bases
remain lower in association with a weak frontal boundary
now essentially stalled over the sf bay area. Winds will continue
generally light and southerly, though locally a bit stronger and
gustier vicinity central portions of sf bay through early this
evening. Light rain and briefly lower ceilings are possible across
the san francisco bay area terminals through mid-evening.VFR
conditions are more likely to persist for the monterey bay
terminals as the frontal boundary remains stalled to the north.

Vicinity of ksfo...VFR conditions expected to generally prevail
through the evening rush, though ceilings and visibilities may
temporarily reduce to MVFR with a passing shower. Southerly
winds to 15 to 20 kt through the early evening hours, then light
out of the southeast. Moderate confidence.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals...VFR conditions to persist with mid level
cloud deck expected to continue over the region. Can't entirely rule
out the possibility of a passing shower, which could briefly
reduce ceilings and visibilities to MVFR. Moderate confidence.

Beaches As of 03:09 pm pst Friday... A potent storm system
passing south of aleutian islands will move nearly due east over
the coming days. This eastward trajectory will create a dynamic
fetch zone where the strongest winds of the storm system will
continuously increase the energy within a swell train on the
southern flank of the storm, resulting in a very large, long
period wnw wave train aimed at the california coast. Very long
period forerunners will arrive through the day Sunday and will
bring a significantly increased risk of rip currents and sneakers
waves to the coast. The largest waves are then forecast to arrive
Sunday night through Monday morning, with peak swells of 17 to 21
ft at 19 to 21 seconds currently expected. Large breaking waves of
25 to 40 ft will be possible at west and northwest facing
locations, with breakers up to or exceeding 50 ft at favored break
points along the coast. As a result, a high surf warning has been
issued from 9 am Sunday through 9 pm Monday along the entire
coastline.

Marine As of 03:09 pm pst Friday... A moderate west to
northwest swell will build tonight and result in hazardous
conditions through Saturday. Winds will become fairly light
tonight as a weak frontal boundary stalls over the region.

Southerly winds will increase late Saturday night into Sunday
ahead of the next storm system to impact the region. A larger,
more powerful long period west to northwest swell will build
Sunday into Monday and result in hazardous conditions into early
next week.

Mtr watches warnings advisories
Tngt Sca... Pt arena to pt reyes 0-10 nm
sca... Pt reyes to pigeon pt 0-10 nm
sca... Pigeon pt to pt pinos 0-10 nm
sca... Pt pinos to pt piedras blancas 0-10 nm
sca... Pt arena to pigeon pt 10-60 nm
sca... Pigeon pt to pt piedras blancas 10-60 nm
sca... Rough bar advisory for sf bar
public forecast: dykema drp
aviation marine: blier
visit us at

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46013 - Bodega Bay - 48NM North Northwest of San Francisco, CA 14 mi37 min SSE 7.8 G 12 57°F1019.8 hPa (+0.9)
PRYC1 - 9415020 - Point Reyes, CA 22 mi43 min 56°F1019.7 hPa
46214 - Point Reyes, CA (029) 33 mi37 min 58°F13 ft
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 40 mi27 min NNE 5.8 G 7.8 54°F 57°F1020.1 hPa
46237 - San Francisco Bar, CA (142) 43 mi67 min 56°F10 ft
RCMC1 - 9414863 - Richmond, CA 44 mi37 min 55°F
TIBC1 - Tiburon Pier, San Francisco Bay, CA 44 mi32 min Calm 54°F 1020 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 46 mi37 min NNW 6 G 7 53°F 1019.6 hPa (+0.5)
FTPC1 - 9414290 - San Francisco, CA 47 mi49 min W 4.1 G 5.1 55°F 56°F1019.8 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 47 mi37 min ENE 2.9 G 4.1 56°F 1020 hPa (+0.3)

Wind History for Point Reyes, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Santa Rosa, Santa Rosa Sonoma County Airport, CA20 mi44 minN 00.75 miFog/Mist50°F50°F100%1019.2 hPa

Wind History from STS (wind in knots)
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Last 24hrCalmN5NW3NW3CalmCalmN3W3CalmNE5E5W8CalmSE7S10S11
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1 day agoCalmCalmCalmCalmNW3N3N4NW4NW6N4S3CalmCalmCalm--CalmS6S3S5SW3S4CalmN4Calm
2 days agoCalmCalmCalmCalmCalmCalmW3CalmCalmCalmSW4CalmNW4NW6NW4NW6NW5W9W6SW5CalmCalmCalmCalm

Tide / Current Tables for Bodega Harbor entrance, California
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Bodega Harbor entrance
Click for Map
Sat -- 03:49 AM PST     First Quarter
Sat -- 05:16 AM PST     4.87 feet High Tide
Sat -- 07:21 AM PST     Sunrise
Sat -- 11:49 AM PST     2.61 feet Low Tide
Sat -- 12:50 PM PST     Moonrise
Sat -- 04:36 PM PST     3.76 feet High Tide
Sat -- 04:52 PM PST     Sunset
Sat -- 11:06 PM PST     1.30 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.62.33.144.64.94.84.543.432.72.62.83.13.53.73.73.53.12.51.91.51.3

Tide / Current Tables for Point Reyes, California Current
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Point Reyes
Click for Map
Sat -- 02:58 AM PST     0.81 knots Max Flood
Sat -- 03:49 AM PST     First Quarter
Sat -- 06:22 AM PST     -0.00 knots Slack
Sat -- 07:21 AM PST     Sunrise
Sat -- 08:51 AM PST     -0.73 knots Max Ebb
Sat -- 12:50 PM PST     Moonrise
Sat -- 12:55 PM PST     0.00 knots Slack
Sat -- 03:20 PM PST     0.48 knots Max Flood
Sat -- 04:53 PM PST     Sunset
Sat -- 06:08 PM PST     -0.00 knots Slack
Sat -- 08:57 PM PST     -0.82 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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00.40.70.80.70.50.2-0.3-0.6-0.7-0.6-0.5-0.300.30.50.40.30-0.3-0.7-0.8-0.7-0.5

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 San Francisco/Monterey Bay Area, CA (0,6,7,8)
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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.