Saturday, July30, 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 6:11AMSunset 8:23PM Saturday July 30, 2016 9:50 AM PDT (16:50 UTC) Moonrise 2:11AMMoonset 4:45PM Illumination 14% Phase: Waning Crescent; Moon at 26 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- 840 Am Pdt Sat Jul 30 2016
Today..S winds 5 kt. Wind waves 2 ft or less. NW swell 4 to 6 ft at 10 seconds. Patchy fog late in the morning.
Tonight..SE winds 10 kt. Wind waves 2 ft or less. NW swell 4 to 6 ft at 10 seconds. Patchy fog after midnight.
Sun..S winds 10 kt. Wind waves 2 ft or less. NW swell 4 to 6 ft at 10 seconds. Patchy fog in the morning.
Sun night..SW winds 5 kt. Wind waves 2 ft or less. NW swell 3 to 5 ft at 10 seconds. Patchy fog after midnight.
Mon..S winds 5 kt...becoming w. Wind waves 3 to 4 ft. NW swell 3 to 5 ft at 10 seconds. Patchy fog.
Tue..W winds 10 to 20 kt. Wind waves 2 to 4 ft. NW swell 3 to 5 ft. Patchy fog.
Wed..NW winds 10 to 20 kt. Wind waves 2 to 4 ft. NW swell 4 to 6 ft. Patchy fog.
PZZ500 840 Am Pdt Sat Jul 30 2016
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Generally light winds today with locally stronger winds through the northern san francisco bay and extreme northern outer waters. A long period southerly swell as a part of a mixed swell will move through the waters through the next few days.

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 301124
afdmtr
area forecast discussion
national weather service san francisco bay area
424 am pdt Sat jul 30 2016

Synopsis Typical summertime conditions will continue over the
next several days with low clouds/fog and cool temperatures near
the coast along with warm conditions inland. Look for a gradual
cooling trend for inland areas through Monday as an upper level
trough develops across the pacific northwest and northern
california. Smokey conditions will continue over portions of the
monterey bay area northward into the south bay.

Discussion As of 3:15 am pdt Saturday... As expected clouds
have returned to all coastal regions this morning along with most
adjacent valley spots. 24 hour change products indicate only minor
difference from early Friday morning with the marine layer still
around 1000 feet and the onshore flow around 3 mb. Satellite heat
product shows the soberanes fire in monterey county near big sur.

An approaching longwave trough will advance southward down the
coast today. This will lead to slightly cooler conditions
especially for inland locations. A secondary feature will then
rotate along the trough for Sunday into Monday which will lead to
additional inland cooling. By Monday inland highs will mostly be
in the 80s to lower 90s with higher temperatures confined to san
benito and monterey counties. Coastal locations will see only
minor day-today variations.

As the previous shift mentioned, some of the models are hinting
that mid-level moisture could move into our CWA on Monday from the
southeast. The latest run of the NAM has backed off a bit from
that suggestion, although a small pocket of moderate moist air and
instability GOES through southern monterey county. The other
models are less bullish and keep the moist air farther to the
south.

Temperatures will be near normal through the remainder of the
week as the longwave trof moves across our area and remains fairly
stationary. No precipitation is expected.

Aviation As of 4:30 am pdt Saturday... A developing surface low
off the coast will bring a light south to southwest flow to the
area today. Marine layer is holding steady near 1000 feet and
clouds have spread into the east side of the sfo bay area. Ifr cigs
now reported at oak and smb. Southerly flow should keep stratus
mostly out of sfo but the approach will be impacted from the smb
south. Marine layer is shallow enough for clearing to take place
around 17z.

Vicinity of ksfo... MostlyVFR but some clouds from the south may
cause tempo ifr CIGS between 14z-17z.

Sfo bridge approach... Ifr CIGS through 17z.

Monterey bay terminals... Ifr/lifr through 17z.

Marine As of 4:30 am pdt Saturday... High pressure off the
northern california coast will keep moderate northwest winds over
the northern outer waters. A weak surface low will develop near
shore resulting in light southerly winds.

Mtr watches/warnings/advisories
Tday Sca... Pt arena to pigeon pt 10-60 nm
sca... Sf bay from 2 pm
public forecast: bell
aviation: W pi
marine: W pi
visit us at

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
BDXC1 7 mi45 min 56°F
46013 - Bodega Bay - 48NM North Northwest of San Francisco, CA 17 mi31 min SE 3.9 G 5.8 50°F 52°F1010.9 hPa50°F
PRYC1 - 9415020 - Point Reyes, CA 18 mi51 min SSE 2.9 G 6 55°F 57°F1010.5 hPa (+1.4)
46214 - Point Reyes, CA (029) 33 mi89 min 55°F8 ft
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 35 mi61 min S 3.9 G 5.8 52°F 56°F4 ft1010.6 hPa (+1.4)
46237 - San Francisco Bar, CA (142) 37 mi89 min 57°F3 ft
TIBC1 - Tiburon Pier, San Francisco Bay, CA 38 mi60 min S 6 56°F 64°F1010 hPa
RCMC1 - 9414863 - Richmond, CA 38 mi51 min S 4.1 G 7 56°F 65°F1010.3 hPa (+1.3)
PPXC1 - 9414847 - Richmond (Point Potrero), CA 40 mi51 min SSW 8.9 G 13 55°F 1010.6 hPa (+1.3)
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 40 mi51 min SW 9.9 G 12 58°F 1009.9 hPa (+1.3)
FTPC1 - 9414290 - San Francisco, CA 41 mi51 min WSW 5.1 G 8 54°F 60°F1010.8 hPa (+1.4)
CQUC1 42 mi50 min 69°F
PXSC1 44 mi51 min 56°F 55°F
PXOC1 - 9414311 - San Francisco (Pier 1), CA 44 mi51 min W 5.1 G 8 56°F
OBXC1 46 mi51 min 56°F 55°F
UPBC1 48 mi51 min WNW 18 G 22
MZXC1 - 9415102 - Martinez-Amorco CA 48 mi51 min WNW 17 G 20 58°F 70°F1008.8 hPa (+1.4)57°F
LNDC1 49 mi51 min NNW 1 G 4.1 56°F 1010.5 hPa (+1.4)
AAMC1 - 9414750 - Alameda, CA 49 mi51 min WNW 2.9 G 5.1 57°F 68°F1010.7 hPa (+1.3)

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 mi58 minN 07.00 miMostly Cloudy53°F48°F86%1009.4 hPa
Novato / Gnoss Field, CA24 mi56 minVar 410.00 miOvercast57°F51°F82%1010.5 hPa

Wind History from O69 (wind in knots)
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Last 24hrNW5NW4NW4NW4NW3NW5W6W6NW3W5W6W6NW7W10W8NW7NW9
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1 day agoW5NW4W5NW4NW3NW3W5NW3W3W3NW3W6NW5NW9NW8NW11NW8NW6NW7NW5NW5NW5NW4NW8
2 days agoCalmW4NW3CalmNW5CalmCalmNW4CalmNW4NW4NW4W8NW7
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Tide / Current Tables for Tomales Bay entrance, California
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Tomales Bay Entrance
Click for Map
Sat -- 03:11 AM PDT     Moonrise
Sat -- 03:50 AM PDT     -0.50 feet Low Tide
Sat -- 06:13 AM PDT     Sunrise
Sat -- 10:22 AM PDT     3.69 feet High Tide
Sat -- 03:11 PM PDT     2.11 feet Low Tide
Sat -- 05:44 PM PDT     Moonset
Sat -- 08:22 PM PDT     Sunset
Sat -- 09:19 PM PDT     5.82 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.81.50.4-0.3-0.5-0.10.71.72.63.33.73.63.32.82.42.12.22.83.64.65.45.85.75

Tide / Current Tables for Point Reyes, California Current
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Point Reyes
Click for Map
Sat -- 12:26 AM PDT     -1.38 knots Max Ebb
Sat -- 03:12 AM PDT     Moonrise
Sat -- 04:32 AM PDT     0.00 knots Slack
Sat -- 06:13 AM PDT     Sunrise
Sat -- 07:42 AM PDT     1.08 knots Max Flood
Sat -- 10:48 AM PDT     -0.00 knots Slack
Sat -- 01:08 PM PDT     -0.65 knots Max Ebb
Sat -- 04:22 PM PDT     0.00 knots Slack
Sat -- 05:44 PM PDT     Moonset
Sat -- 07:17 PM PDT     0.87 knots Max Flood
Sat -- 08:22 PM PDT     Sunset
Sat -- 10:06 PM PDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-1.4-1.4-1.2-0.8-0.30.30.811.10.90.4-0.1-0.5-0.6-0.6-0.5-0.20.30.70.90.80.60.1-0.6

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 (12,3,4,5)
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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.