Saturday, May28, 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 5:48AMSunset 8:28PM Saturday May 28, 2016 2:45 AM PDT (09:45 UTC) Moonrise 12:03AMMoonset 11:13AM Illumination 55% Phase: Waning Gibbous; Moon at 22 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- 856 Pm Pdt Fri May 27 2016
.small craft advisory in effect through Sunday afternoon...
Tonight..NW winds 20 to 30 kt. Wind waves 4 to 6 ft. NW swell 7 to 9 ft at 10 seconds.
Sat..NW winds 15 to 25 kt. Wind waves 3 to 5 ft. NW swell 6 to 7 ft at 10 seconds.
Sat night..NW winds 20 to 30 kt. Wind waves 3 to 5 ft. NW swell 8 to 9 ft at 10 seconds.
Sun..NW winds 15 to 25 kt. Wind waves 3 to 5 ft. NW swell 7 to 9 ft at 9 seconds.
Sun night..NW winds 10 to 20 kt. Wind waves 2 to 4 ft. NW swell 6 to 7 ft at 9 seconds. Patchy fog after midnight.
Memorial day..NW winds 5 to 15 kt. Wind waves 1 to 3 ft. NW swell 5 to 7 ft. Patchy fog.
Tue..W winds 10 kt. Wind waves 2 ft or less. NW swell 4 to 6 ft. Patchy fog.
Wed..W winds 10 kt. Wind waves 2 ft or less. W swell 3 to 5 ft. Patchy fog.
PZZ500 856 Pm Pdt Fri May 27 2016
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Strong and gusty northwesterly winds will persist through the weekend along with hazardous seas. The pressure gradient will start to weaken early next week which will lead to diminishing wind speeds. SWells are also forecast to slowly decrease early next 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 280542
afdmtr
area forecast discussion
national weather service san francisco bay area
1042 pm pdt Fri may 27 2016

Synopsis Warmer temperatures will continue into Saturday as
warm north winds move into the bay area. A brief cooling trend is
expected on Sunday as the marine layer pushes well inland again,
then significant warming memorial day and Tuesday as warm high
pressure builds. A dry upper level trough may approach later next
week with a cooling trend but no rain in the forecast for the next
7 days.

Discussion As of 8:56 pm pdt Friday... Mainly clear skies
prevail across the region this evening with the exception of a few
high clouds streaming across the forecast area. The northerly
gradient remains strong increasing from 6.9 mb from acv to sfo to
9.2 mb over the last 6 hours. This strong gradient has brought in
a drier airmass across the region clearing out any lingering low
clouds from the coast and coastal waters. Have updated forecast to
remove low clouds overnight.

As anticipated temperatures finished off the day significantly
warmer than yesterday. Temperatures reached into the mid 60s to
around 70 along the coast, mid to upper 70s around the bay and
locally inland and into the mid to upper 80s well inland. Antioch
was the warm spot today... Coming in at 92 degrees this afternoon.

A few degrees of warming is expected Saturday as a thermal trough
deepens along the coast and high pressure at the surface ridges
across the pacific northwest allowing winds to turn slightly
offshore. Winds will turn onshore once again Sunday as a weak
disturbance aloft moves across the southern half of the state.

This will translate into cooler temperatures along the coast the
marine layer redevelops and cool marine air spreads locally
inland.

By Monday models indicate an upper level ridge will form over the
eastern pacific and nuzzle in over the northern and central
california coast. As the ridge shift east over the west coast
temperatures across the region will begin to warm once again. Warm
and dry weather will continue through Tuesday. Gradual cooling is
expected through the second half of the week as the airmass cools
and the marine layer returns with the approach of another upper
level trough. No rain is expected through the forecast period.

Aviation As of 10:40 pm pdt Friday... Vrf conditions persist
region wide this evening with diminishing wind speeds. A northwest
gradient over the region and drier air aloft will likely result in
continuedVFR conditions for all of the region overnight and into
Saturday morning.

Vicinity of ksfo...VFR through the period. West-northwest winds
generally below 12 kt through the night becoming light and
variable early Saturday morning. West-northwest winds increase
once again Saturday afternoon. High confidence.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals...VFR through the period. Light onshore
winds will likely persist through the night. Return of stratus
deck appears more unlikely overnight, yet may see few/sct low
clouds develop briefly early Saturday morning. Moderate to high
confidence.

Marine As of 10:33 pm pdt Friday... Strong and gusty
northwesterly winds will persist through the weekend along with
hazardous seas. The pressure gradient will start to weaken early
next week which will lead to diminishing wind speeds. Swells are
also forecast to slowly decrease early next week.

Mtr watches/warnings/advisories
Tngt Sca... Pigeon pt to pt pinos 0-10 nm until 3 am
sca... Pt arena to pigeon pt 10-60 nm from 3 am
glw... Pt arena to pigeon pt 10-60 nm until 3 am
sca... Pt reyes to pigeon pt 0-10 nm
sca... Pt pinos to pt piedras blancas 0-10 nm
sca... Pt arena to pt reyes 0-10 nm
sca... Pigeon pt to pt piedras blancas 10-60 nm
sca... Rough bar advisory for sf bar until 3 am
public forecast: cw
aviation: rgass
marine: rgass
visit us at

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
BDXC1 7 mi45 min 52°F
46013 - Bodega Bay - 48NM North Northwest of San Francisco, CA 17 mi55 min NW 27 G 33 51°F 49°F10 ft1009.4 hPa (-0.9)
PRYC1 - 9415020 - Point Reyes, CA 18 mi45 min WNW 21 G 25 57°F 52°F1009.9 hPa (-1.0)
46214 - Point Reyes, CA (029) 33 mi53 min 52°F13 ft
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 35 mi55 min NW 19 G 21 53°F 52°F10 ft1010 hPa (-0.9)
46237 - San Francisco Bar, CA (142) 37 mi53 min 57°F5 ft
TIBC1 - Tiburon Pier, San Francisco Bay, CA 38 mi50 min 62°F
RCMC1 - 9414863 - Richmond, CA 38 mi45 min SSE 1.9 G 4.1 61°F 63°F1009.7 hPa (-0.9)
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 40 mi45 min WSW 5.1 G 7 65°F 1009.3 hPa (-0.8)
PPXC1 - 9414847 - Richmond (Point Potrero), CA 40 mi45 min S 4.1 G 5.1 61°F 1010.1 hPa (-0.8)
FTPC1 - 9414290 - San Francisco, CA 41 mi45 min SW 1.9 G 5.1 56°F 57°F1010.2 hPa (-0.9)
FPXC1 41 mi46 min 57°F
CQUC1 42 mi50 min 65°F
PXSC1 44 mi45 min 59°F 50°F
PXOC1 - 9414311 - San Francisco (Pier 1), CA 44 mi129 min Calm G 1.9 59°F
OBXC1 46 mi45 min 60°F 53°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 46 mi129 min W 1.9 G 2.9 61°F 1010.5 hPa
UPBC1 48 mi45 min WNW 13 G 14
MZXC1 - 9415102 - Martinez-Amorco CA 48 mi45 min WNW 8.9 G 9.9 65°F 65°F1008.7 hPa (-0.8)52°F
LNDC1 49 mi51 min N 1.9 G 2.9 61°F 1009.9 hPa
AAMC1 - 9414750 - Alameda, CA 49 mi45 min W 1.9 G 2.9 61°F 67°F1010.1 hPa (-1.0)

Wind History for Point Reyes, CA
(wind in knots)    EDIT      (on/off)   Help
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NW9
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W6
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Santa Rosa, Santa Rosa Sonoma County Airport, CA20 mi52 minNNE 910.00 miFair62°F37°F41%1009 hPa
Petaluma Municipal Airport, CA20 mi50 minN 310.00 miA Few Clouds54°F46°F77%1010.5 hPa
Novato / Gnoss Field, CA24 mi50 minNNW 310.00 miFair61°F44°F55%1009.8 hPa

Wind History from O69 (wind in knots)
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Last 24hrNW3CalmCalmCalmCalmCalmCalmCalmSW6W7W7NW5NW8NW6NW4NW5W5NW4NW3NW3NW3CalmCalmN3
1 day agoCalmCalmCalmCalmCalmS4CalmCalmCalmN3Calm--W10W9W8W7W8NW5CalmN3CalmCalm--Calm
2 days agoCalmCalmCalmCalmCalmCalmCalmCalmCalmN4W8W8
G14
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G16
W10
G16
SW11
G14
W5W10W6W6CalmCalmCalmCalmCalm

Tide / Current Tables for Tomales Bay entrance, California
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Tomales Bay Entrance
Click for Map
Sat -- 01:02 AM PDT     Moonrise
Sat -- 04:04 AM PDT     3.99 feet High Tide
Sat -- 05:51 AM PDT     Sunrise
Sat -- 11:20 AM PDT     -0.19 feet Low Tide
Sat -- 12:13 PM PDT     Moonset
Sat -- 06:22 PM PDT     3.99 feet High Tide
Sat -- 08:27 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.62.93.43.843.83.32.51.70.80.2-0.2-0.10.41.12.133.743.93.63.22.72.3

Tide / Current Tables for Point Reyes, California Current
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Point Reyes
Click for Map
Sat -- 01:02 AM PDT     Moonrise
Sat -- 02:25 AM PDT     0.50 knots Max Flood
Sat -- 04:58 AM PDT     -0.00 knots Slack
Sat -- 05:52 AM PDT     Sunrise
Sat -- 08:29 AM PDT     -1.09 knots Max Ebb
Sat -- 12:09 PM PDT     0.00 knots Slack
Sat -- 12:13 PM PDT     Moonset
Sat -- 03:21 PM PDT     0.91 knots Max Flood
Sat -- 06:53 PM PDT     -0.00 knots Slack
Sat -- 08:26 PM PDT     Sunset
Sat -- 09:18 PM PDT     -0.74 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.10.30.50.50.3-0-0.4-0.8-1.1-1-0.8-0.4-0.10.30.70.90.90.70.4-0-0.5-0.7-0.7-0.5

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 (5,6,7,8)
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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.