Wednesday, May24, 2017 L-36.com


Marine Weather and Tides
Sereno del Mar, CA

Version 3.4
What's New / NOTES
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 5:51AMSunset 8:25PM Tuesday May 23, 2017 9:01 PM PDT (04:01 UTC) Moonrise 3:41AMMoonset 5:03PM Illumination 2% Phase: Waning Crescent; Moon at 28 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 Point Arena To Point Reyes To 10 Nm- 843 Pm Pdt Tue May 23 2017
Tonight..S winds 10 kt. Wind waves 2 ft or less. W swell 3 to 5 ft at 9 seconds. Patchy fog after midnight. Patchy drizzle after midnight.
Wed..S winds 10 kt. Wind waves 2 ft or less. NW swell 5 to 7 ft at 12 seconds. Patchy fog in the morning. Patchy drizzle in the morning.
Wed night..SE winds 10 kt. Wind waves 2 ft or less. NW swell 5 to 7 ft at 11 seconds.
Thu..SE winds 5 to 15 kt. Wind waves 1 to 3 ft. NW swell 5 to 7 ft at 11 seconds.
Thu night..SE winds 10 kt. Wind waves 2 ft or less. NW swell 5 to 7 ft at 11 seconds.
Fri..S winds 5 to 15 kt. Wind waves 1 to 3 ft. NW swell 4 to 6 ft.
Sat..NW winds 10 kt. Wind waves 2 ft or less. NW swell 3 to 4 ft.
Sun..NW winds 15 to 25 kt. Wind waves 3 to 5 ft. NW swell 2 to 4 ft.
PZZ500 843 Pm Pdt Tue May 23 2017
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Surface high pressure will be located over the central coast tonight through Wednesday resulting in mainly light west to southwesterly winds over much of the coastal waters with exception of the far northwestern coastal waters where winds will still be northerly. Winds are forecast to weaken late this week.

7 Day Forecast for Marine Location Near Sereno del Mar, CA
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location: 38.4, -123.09     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 240322
afdmtr
area forecast discussion
national weather service san francisco bay area
822 pm pdt Tue may 23 2017

Synopsis An inland cooling trend will continue through late week
as high pressure weakens and the marine influence increases. Minor
warming is then expected during the upcoming weekend as high
pressure returns to the west coast.

Discussion As of 08:20 pm pdt Tuesday... Only minor adjustments
made to sky cover based on current trends. As of 7:50 pm pdt,
visible satellite showed an extensive area of low clouds off the
coast and impacting parts of the bay area with the clouds
intruding through the golden gate east to berkeley. Fort ord
profiler shows the marine layer around 1,500 ft this evening.

Tuesday was another warm day for inland locations with highs ranging
from the 80s to low 90s. Don't expect to see any 90s tomorrow as
the ridge responsible for bringing the well above normal
temperatures continues to push east into the continent. Most
inland locations can expect to see temperatures about 5 to 10
degrees cooler on Wednesday. Additional cooling will occur from
Wednesday to Thursday as an upper level low centered over
southwestern canada allows for 500 mb heights to continue to fall
over the region. High temperatures by Thursday will fall to the
upper 60s to mid 70s across the east bay and south bay, as well as
the salinas valley. Coastal locations can expect widespread
middle 50s to middle 60s with marine stratus.

Models suggest another ridge to build over the west coast in time
for the holiday weekend, though at this point it doesn't look that
it'll be as warm as it was over the past few days. Temperatures
should be at or within several degrees of climatological normals
for the end of may.

Prev discussion As of 01:32 pm pdt Tuesday... Low clouds continue to
hug the coast this afternoon with mostly sunny skies inland. With
this, the warmest temperatures persist over inland areas while
cooler temperatures (generally in the upper 50s to lower 60s) are
common at the coast. This trend will likely persist into tomorrow,
with low clouds spreading inland this evening and into the
overnight hours with a marine layer of around 1500 feet in place.

However, as the ridge aloft weakens and onshore flow increases,
inland locations will see the gradual cooling trend continue into
Wednesday. With the deepening marine layer, cannot rule out patchy
coastal drizzle mist during the late night and early morning.

However, measurable precipitation is highly unlikely.

Further cooling is expected late in the week as the ridge flattens
and an upper level low drops down into the northern rockies. With
this and an increase marine influence, looks for temperatures to
fall below seasonal averages for just about all inland locations.

More widespread 60s and 70s will be likely during the afternoon hours
beginning on Thursday and continuing through Saturday.

By late in the weekend and into early next week, a ridge of high
pressure is currently forecast to rebuild over the west coast. This
would likely result in a slight warming trend with afternoon
temperatures back to near seasonal averages. In addition, look for
mostly sunny afternoon conditions inland while coastal clouds will
be possible.

Aviation As of 5:17 pm pdt Tuesday... The marine layer is
deepening with a decent onshore push of stratus and fog expected
this evening into Wednesday morning. Timing stratus CIGS will be
challenging due to a southerly component to the wind over the
inner coastal waters this evening. Additionally a lower level
cyclonic circulation over the offshore waters advances eastward
reaching the coastal waters just west of the bay area Wednesday.

Ongoing area-wide surface to lower level cooling thus expected to
couple with a strengthening southerly gradient (smx-sfo presently
1.7 mb) and a southerly wind component will likely become more of
an influence on the marine layer from later tonight into Wednesday.

Surface pressures will generally be highest over the central coast
and lowest over far northern california through Wednesday favoring
a continuation of the smx-sfo gradient nearing 4 mb tonight and
Wednesday per latest NAM model output.

Vicinity of ksfo... Low to moderate confidenceVFR holds this evening
which is highly dependent on wind direction and strength as well as
the marine layer depth; presently san carlos sodar shows it's near
1,000 feet deep. As long as the marine layer depth holds and the
wind does not become more due westerlyVFR should hold for a while
longer this evening. Ifr is forecast, but not til much later tonight
with general trend toward MVFR cig early Wednesday morning. Gusty
w-sw winds likely Wednesday late morning and afternoon.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals... MVFR CIGS trending to ifr this evening
the possibly back to MVFR CIGS late tonight and Wednesday morning.

Low confidenceVFR redevelops by afternoon Wednesday.

Marine As of 4:42 pm pdt Tuesday... Light winds will to continue
tonight across the waters. Split flow tomorrow expected with
increasing northerly winds over the northern outer waters and
increasing southerly winds along the coast. Winds are forecast to
weaken late this week.

Mtr watches warnings advisories
Tngt Sca... Pt arena to pigeon pt 10-60 nm from 9 pm
sca... Sf bay until 9 pm
public forecast: rowe rgass
aviation: canepa
marine: anna
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 16 mi41 min WSW 3.9 G 5.8 52°F 51°F1014.3 hPa52°F
PRYC1 - 9415020 - Point Reyes, CA 29 mi43 min W 2.9 G 4.1 55°F 55°F1013.8 hPa
46214 - Point Reyes, CA (029) 37 mi31 min 52°F5 ft
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 47 mi71 min WSW 3.9 G 5.8 53°F 55°F4 ft1014.2 hPa (-1.2)
ANVC1 - 9416841 - Arena Cove, CA 48 mi43 min W 4.1 G 4.1 50°F 51°F1014.9 hPa
TIBC1 - Tiburon Pier, San Francisco Bay, CA 49 mi59 min NNW 7 54°F 1013 hPa
46237 - San Francisco Bar, CA (142) 49 mi91 min 55°F4 ft
RCMC1 - 9414863 - Richmond, CA 49 mi43 min WSW 7 G 11 57°F 61°F1013 hPa

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, CA17 mi68 minSSE 1110.00 miPartly Cloudy55°F51°F87%1012.5 hPa

Wind History from STS (wind in knots)
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Last 24hrS5SE3S3S4SE4S6SE4CalmCalmS3CalmCalmCalmS5SW6S8S5S14S11SE13S12S12SE11SE6
1 day agoS5SE3SE4SE4SE5S4CalmCalmCalmSE3CalmCalmCalm335SW5S7S9S10S8S9S9SE6
2 days agoSE3S3CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmSE5S7S7S7S10S9S10S7S7S7S6

Tide / Current Tables for Bodega Harbor entrance, California
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Bodega Harbor entrance
Click for Map
Wed -- 04:43 AM PDT     -0.73 feet Low Tide
Wed -- 05:21 AM PDT     Moonrise
Wed -- 05:54 AM PDT     Sunrise
Wed -- 11:12 AM PDT     4.57 feet High Tide
Wed -- 04:31 PM PDT     1.55 feet Low Tide
Wed -- 07:14 PM PDT     Moonset
Wed -- 08:24 PM PDT     Sunset
Wed -- 10:33 PM PDT     6.35 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.73.21.60.2-0.6-0.7-0.20.823.24.14.64.43.82.92.11.61.62.33.34.55.66.26.3

Tide / Current Tables for Salt Point, California Current
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Salt Point
Click for Map
Wed -- 02:08 AM PDT     -1.61 knots Max Ebb
Wed -- 05:22 AM PDT     Moonrise
Wed -- 05:54 AM PDT     Sunrise
Wed -- 05:55 AM PDT     0.00 knots Slack
Wed -- 08:54 AM PDT     1.31 knots Max Flood
Wed -- 12:11 PM PDT     -0.00 knots Slack
Wed -- 02:37 PM PDT     -1.05 knots Max Ebb
Wed -- 05:52 PM PDT     0.00 knots Slack
Wed -- 07:16 PM PDT     Moonset
Wed -- 08:26 PM PDT     Sunset
Wed -- 08:47 PM PDT     1.12 knots Max Flood
Wed -- 11:41 PM PDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.7-1.3-1.6-1.5-1.1-0.60.10.71.21.31.10.70.1-0.5-1-1-0.8-0.40.10.611.10.90.4

Weather Map and Satellite Images
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Weather Map
wmap_P
IR Satellite Image from GEOS
west_satellite

GOES Local Image of CentralWestCoast    EDIT
Geos

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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weather_mapweather_map weather_map

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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.