Wednesday, August31, 2016 L-36.com


Marine Weather and Tides
Dillon Beach, CA

Version 3.4
What's New / NOTES
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.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 6:39AMSunset 7:41PM Wednesday August 31, 2016 12:58 AM PDT (07:58 UTC) Moonrise 4:59AMMoonset 6:26PM Illumination 3% 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- 821 Pm Pdt Tue Aug 30 2016
.small craft advisory in effect through late Wednesday night...
Tonight..NW winds 15 to 25 kt. Wind waves 3 to 5 ft. NW swell 4 to 6 ft at 7 seconds.
Wed..NW winds 15 to 25 kt. Wind waves 3 to 5 ft. NW swell 5 to 6 ft at 7 seconds.
Wed night..NW winds 15 to 25 kt. Wind waves 3 to 5 ft. NW swell 5 to 7 ft at 7 seconds.
Thu..NW winds 15 to 25 kt. Wind waves 3 to 5 ft. NW swell 5 to 7 ft at 7 seconds.
Thu night..NW winds 15 to 25 kt. Wind waves 3 to 5 ft. NW swell 6 to 8 ft at 7 seconds. Patchy fog after midnight.
Fri..NW winds 15 to 25 kt. Wind waves 3 to 5 ft. NW swell 6 to 8 ft. Patchy fog.
Sat..NW winds 15 to 25 kt. Wind waves 3 to 5 ft. NW swell 7 to 9 ft. Patchy fog.
Sun..NW winds 15 to 25 kt. Wind waves 3 to 5 ft. NW swell 7 to 9 ft. Patchy fog.
PZZ500 821 Pm Pdt Tue Aug 30 2016
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... An upper level trough over the eastern pacific will move over the forecast area tonight causing gusty winds to continue into Wednesday morning. Surface high pressure over the eastern pacific will then temporarily strengthen Wednesday keeping gusty winds going through Wednesday afternoon and early evening. Borderline gale conditions are expected south of point sur into the evening hours. Winds will be moderate through the rest of the week.

7 Day Forecast for Marine Location Near Dillon Beach, CA
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location: 38.25, -122.98     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 310539
afdmtr
area forecast discussion
national weather service san francisco bay area
1039 pm pdt Tue aug 30 2016

Synopsis A broad upper level trough over the west coast
will remain in place through late week and result in dry weather
conditions along with temperatures below seasonal averages.

Discussion As of 8:50 pm pdt Tuesday... Clear skies prevailed
across the region today as an upper level trough approached from
the west. This system mixed out the marine layer earlier today
which allowed temperatures to warm a few degrees across most
locations. Highs topped out in the 60 to around 70 near the coast
to the 80s over inland areas. The warmest inland locations hit the
lower to mid 90s. Along with slightly warmer temperatures winds
also increased across the region. Breezy afternoon conditions were
observed across the district with san francisco international
airport reporting sustained winds of 35 mph with gusts to 40 mph
earlier this evening.

For tonight anticipate breezy conditions to continue as well as
increasing high clouds as a swath of cloud associated with a weak
disturbance spinning off the coast moves in from the west. We do
not expect the typical low clouds and patchy fog to redevelop
tonight as the boundary layer remains mostly mixed out.

Little change is expected in the overall weather pattern through
the end of the week as a broad upper level trough remains
anchored over the western u.S. Temperatures will remain near to
slightly below normal through the end of the week and into the
weekend. A slight warming trend is on tap for the end of the
weekend into early next week as a thermal trough develops along
the coast. The marine layer will reestablish itself at some point
this weekend however confidence is low with respect to the exact
timing.

Forecast remains on track. No updates are expected this evening.

Aviation As of 10:39 pm pdt Tuesday... Upper trough will pass
over the area tonight and early Wednesday morning, mid and high
clouds continue to stream over the area with a sharp moisture
gradient to dry air seen behind the trough on water vapor imagery.

On kmux radar a small area of high based echoes between 14 thousand
and 20 thousand feet approx 60 miles SW of the monterey peninsula
was seen earlier this evening, also a brief shower with reflectivities
down to about 6,000 feet agl was seen off the san mateo coast.

Vcsh in the 06z terminals ksjc-klvk southward to the central coast
late tonight and early Wednesday morning. Sufficient mixing of
drier air in the lower levels expected to keepVFR going tonight
and Wednesday as well.

Vicinity of ksfo...VFR. West winds gusting to 20-25 knots most of
tonight, possibly a relative lull Wednesday morning then gusty
west winds resuming Wednesday afternoon and evening.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals...VFR. Vcsh through early Wednesday
morning. W-sw winds 5-10 knots possibly becoming locally gusty
Wednesday afternoon.

Marine As of 8:21 pm pdt Tuesday... An upper level trough over
the eastern pacific will move over the forecast area tonight
causing gusty winds to continue into Wednesday morning. Surface
high pressure over the eastern pacific will then temporarily
strengthen Wednesday keeping gusty winds going through Wednesday
afternoon and early evening. Borderline gale conditions are
expected south of point sur into the evening hours. Winds will be
moderate through the rest of the week.

Mtr watches/warnings/advisories
Tngt Sca... Pt arena to pt reyes 0-10 nm
sca... Pt pinos to pt piedras blancas 0-10 nm
sca... Pt arena to pigeon pt 10-60 nm
sca... Pt reyes to pigeon pt 0-10 nm until 4 am
public forecast: cw
aviation: canepa
marine: sims/canepa
visit us at

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
BDXC1 7 mi58 min 56°F
46013 - Bodega Bay - 48NM North Northwest of San Francisco, CA 17 mi38 min NW 21 G 27 59°F 56°F1013.4 hPa57°F
PRYC1 - 9415020 - Point Reyes, CA 18 mi58 min WNW 17 G 23 62°F 57°F1013.2 hPa (+0.0)
46214 - Point Reyes, CA (029) 33 mi66 min 60°F5 ft
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 35 mi68 min NW 16 G 19 60°F 59°F5 ft1013.5 hPa (+0.0)
46237 - San Francisco Bar, CA (142) 37 mi66 min 59°F3 ft
TIBC1 - Tiburon Pier, San Francisco Bay, CA 38 mi58 min Calm 63°F 63°F1013 hPa
RCMC1 - 9414863 - Richmond, CA 38 mi58 min SSE 13 G 16 61°F 65°F1013 hPa (+0.3)
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 40 mi64 min SW 12 G 15 66°F 1012 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 40 mi58 min S 12 G 13 63°F 1013.3 hPa (+0.0)
FTPC1 - 9414290 - San Francisco, CA 41 mi58 min WSW 8.9 G 14 60°F 62°F1013.2 hPa (-0.3)
FPXC1 41 mi53 min 62°F
CQUC1 42 mi63 min 67°F
PXSC1 44 mi58 min 62°F 56°F
PXOC1 - 9414311 - San Francisco (Pier 1), CA 44 mi64 min Calm G 2.9 61°F
OBXC1 46 mi58 min 62°F 57°F
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 46 mi58 min SW 8 G 9.9
UPBC1 48 mi64 min WSW 7 G 8.9
MZXC1 - 9415102 - Martinez-Amorco CA 48 mi58 min SW 6 G 8.9 69°F 67°F1011.4 hPa (+0.0)54°F
LNDC1 49 mi64 min SSW 7 G 8 63°F 1013.5 hPa
AAMC1 - 9414750 - Alameda, CA 49 mi58 min SW 6 G 7 62°F 69°F1013.7 hPa (+0.0)

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 mi65 minN 010.00 miFair61°F53°F75%1011.4 hPa
Petaluma Municipal Airport, CA20 mi63 minno data10.00 miFair57°F0°F%1013.2 hPa
Novato / Gnoss Field, CA24 mi63 minN 010.00 miFair61°F53°F77%1012.9 hPa

Wind History from O69 (wind in knots)
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Last 24hrNW4CalmCalmCalmCalmCalmCalmCalmCalmW8NW6W8
G14
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NW8NW9W10NW6W6NW3N3--Calm
1 day agoW7W6NW3NW3W7W6W6W5NW4NW3W6W7W4W10
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NW4W10W6NW5NW3N3Calm
2 days agoNW4W5W5NW4W3CalmCalmCalmW3Calm----------W9W8
G15
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G14
NW4NW5W6W8

Tide / Current Tables for Tomales Bay entrance, California
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Tomales Bay Entrance
Click for Map
Wed -- 05:44 AM PDT     -0.24 feet Low Tide
Wed -- 05:59 AM PDT     Moonrise
Wed -- 06:41 AM PDT     Sunrise
Wed -- 12:07 PM PDT     4.53 feet High Tide
Wed -- 05:44 PM PDT     1.55 feet Low Tide
Wed -- 07:26 PM PDT     Moonset
Wed -- 07:42 PM PDT     Sunset
Wed -- 11:36 PM PDT     5.29 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
5.14.23.11.80.7-0.1-0.20.21.22.33.44.24.54.33.832.21.71.61.92.73.74.65.2

Tide / Current Tables for Point Reyes, California Current
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Point Reyes
Click for Map
Wed -- 02:50 AM PDT     -1.37 knots Max Ebb
Wed -- 05:59 AM PDT     Moonrise
Wed -- 06:36 AM PDT     0.00 knots Slack
Wed -- 06:41 AM PDT     Sunrise
Wed -- 09:42 AM PDT     1.18 knots Max Flood
Wed -- 12:41 PM PDT     -0.00 knots Slack
Wed -- 03:21 PM PDT     -0.95 knots Max Ebb
Wed -- 06:43 PM PDT     0.00 knots Slack
Wed -- 07:26 PM PDT     Moonset
Wed -- 07:42 PM PDT     Sunset
Wed -- 09:37 PM PDT     1.01 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.2-0.9-1.3-1.4-1.2-0.9-0.40.30.81.11.210.5-0.2-0.7-0.9-0.9-0.7-0.40.20.7110.8

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 (3,6,7,8)
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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.