Friday, November28, 2014 L-36.com


Marine Weather and Tides
Dillon Beach, CA

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6/17/2014 - I reported slow load times to NOAA and they quickly resolved the problem. Sorry for any inconvience. NOAA had some stuck processes on two servers. This was a problem on 5 to 10% of the requests.
6/10/2014 - Marine Zones updated. Some zones have changed. Edit your Marine Forecast section to check.

Sunrise 7:05AMSunset 4:52PM Friday November 28, 2014 12:17 PM PST (20:17 UTC) Moonrise 12:07PMMoonset 11:44PM Illumination 42% Phase: First Quarter Moon; Moon at 7 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- 835 Am Pst Fri Nov 28 2014
Today..SE winds 5 to 15 kt. Wind waves 1 to 3 ft. W swell 7 to 9 ft at 14 seconds. Patchy fog in the morning. Chance of rain through the day.
Tonight..SE winds 5 to 15 kt. Wind waves 1 to 3 ft. W swell 6 to 8 ft at 12 seconds. Rain.
Sat..SE winds 10 kt. Wind waves 2 ft or less. W swell 5 to 7 ft at 11 seconds. Rain likely.
Sat night..SE winds 10 kt. Wind waves 2 ft or less. W swell 3 to 5 ft at 11 seconds. Rain likely in the evening...then showers likely after midnight.
Sun..E winds 10 to 20 kt. Wind waves 2 to 4 ft. W swell 3 to 5 ft at 11 seconds. Showers likely...then chance of rain.
Mon..SE winds 15 to 25 kt. Wind waves 3 to 6 ft. SW swell 5 to 7 ft...increasing to 8 to 10 ft. Chance of showers.
Tue..SE winds 15 to 25 kt. Wind waves 3 to 5 ft. SW swell 7 to 9 ft...decreasing to 5 to 6 ft. Showers likely.
PZZ500 835 Am Pst Fri Nov 28 2014
Synopsis for the central california coast and bays including Monterey bay national marine sanctuaries.. Southerly flow will gradually develop over all of the coastal waters today as a cold front approaches the region. Southerly flow will increase over the week and early next week as a storm system intensifies off the coast. In addition...the unsettled weather will bring periods of rain....Potentially heavy at times...to the region this weekend and much of 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 281801
afdmtr
area forecast discussion
national weather service san francisco bay area
1001 am pst Fri nov 28 2014

Synopsis A frontal system will bring rain to the north bay
later today and spread southward across the san francisco and
monterey bay areas through Saturday. Unsettled conditions will
persist through early next week in advance of a stronger upper
level low forecast to impact the region by the middle of next
week.

Discussion As of 9:35 am pst Friday... Patchy fog persists this
morning over the san francisco bay and locally into the north bay
valleys and santa clara valleys. Around sunrise visibilities were
close to zero at several observing sites... But they have improved
with only one location (petaluma) reporting 1/4 mile as of 9 am.

Expect the rest of the fog to clear this morning... Although
locally hazy conditions are expected to persist around the san
francisco bay through the afternoon. After a chilly start to the
day... Highs today are expected to be mild and range from around 60
to the 70s in the warmest areas across the southern zones.

The main weather story is the impending series of rain events
expected to impact the area for the next 5 or 6 days. The first in
a series of rain events is currently bearing down on the pacific
northwest and extreme northern california coast. This system is
expected to bring rain to the north bay beginning this
afternoon... With rain spreading into the greater san francisco bay
area this evening and overnight... And finally reaching the
monterey bay and central coast by Saturday morning. Another
frontal band is progged to move across Saturday night into Sunday
spreading additional rainfall across the area... Although this
second band is forecast to focus more on areas from santa cruz
county south through the santa lucias. The 00z run of the ecmwf
brings up to 2 additional inches to the coastal ranges from santa
cruz county south through midday Sunday with this second system.

All models agree on high pressure briefly rebuilding along the
coast on Monday with shower activity easing up. By Tuesday and
Wednesday another significant batch of rain is expected across the
district as an upper level low approaches the coast from the west.

There remain differences in solutions amongst the medium range
models regarding where the main focus of heavy rain will fall with
this impulse. The 00z runs of the ECMWF as well as the gem focus the
heavier rains at our CWA while the 12z operational run of the gfs
now nails the los angeles area with most of the heavy precip
through Wednesday. Also... The GFS ends precip by Thursday while the
non-domestic forecast models keep unsettled weather going through
the workweek. For now our forecasts have shower chances going through
Friday.

Aviation As of 10:00 am pst Friday... Short term concerns
continues to be the fog sloshing around sf bay. Both ksfo and
koak continue to show some visby restrictions and will through the
morning. Ksjc is finally showing some signs of improvement.

Monterey bay isVFR. Next up will be a cold front currently moving
toward the N bay. CIGS and rain will develop from N to S overnight
with biggest impact early Saturday morning with moderate to heavy
rain. Wet runways and SE winds seem likely Saturday morning.

Overall conf is medium.

Vicinity of ksfo... Fog will linger around ksfo and koak through
1830-19z today. ExpectingVFR this afternoon... But enough haze may
be present for low end MVFR. Front is forecast to lower cigs
tonight with solid rain by 10-12z Saturday.

Ksfo bridge approach... Cigs AOB 500 through 1830z as late as 19z
with reduced visby too. Latest satellite does show some signs of
improvement.VFR this afternoon with some lingering haze issues.

Monterey bay area terminals...VFR this afternoon/evening. MVFR
late in the forecast with precip developing late.

Marine As of 8:35 am pst Friday... Southerly flow will
gradually develop over all of the coastal waters today as a cold
front approaches the region. Southerly flow will increase over the
week and early next week as a storm system intensifies off the
coast. In addition... The unsettled weather will bring periods of
rain... .Potentially heavy at times... To the region this weekend
and much of next week.

Mtr watches/warnings/advisories
Tday None.

Public forecast: rgass
aviation: mm
marine: mm
visit us at weather.Gov/sanfrancisco
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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 17 mi27 min SSE 16 G 19 58°F 58°F9 ft1014.4 hPa (-1.2)
PRYC1 - 9415020 - Point Reyes, CA 18 mi29 min SE 8 G 13 58°F 58°F1014.6 hPa
46214 - Point Reyes, CA (029) 33 mi66 min 60°F10 ft
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 35 mi27 min SSE 9.7 G 14 57°F 58°F8 ft1015.4 hPa (-1.2)
46237 - San Francisco Bar, CA (142) 37 mi35 min 58°F8 ft
RCMC1 - 9414863 - Richmond, CA 38 mi29 min SSE 8 G 9.9 55°F 59°F1015 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 40 mi29 min S 8 G 8.9 56°F 1015.5 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 40 mi29 min NNW 2.9 G 4.1 56°F 1014.9 hPa
FTPC1 - 9414290 - San Francisco, CA 41 mi29 min ENE 1.9 G 1.9 56°F 59°F1015.5 hPa
PXOC1 - 9414311 - San Francisco (Pier 1), CA 44 mi29 min SE 9.9 G 12 53°F 1014.3 hPa
PXSC1 44 mi29 min 55°F 52°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 46 mi29 min S 5.1 G 8 56°F 1015.4 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 46 mi29 min S 5.1 G 6
OBXC1 46 mi29 min 55°F 52°F
UPBC1 48 mi35 min WNW 4.1 G 5.1
MZXC1 - 9415102 - Martinez-Amorco CA 48 mi29 min WSW 2.9 G 5.1 55°F 58°F1014.3 hPa54°F
AAMC1 - 9414750 - Alameda, CA 49 mi29 min S 4.1 G 5.1 55°F 59°F1014.9 hPa
LNDC1 49 mi29 min S 4.1 G 5.1 56°F 1015.3 hPa

Wind History for Point Reyes, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Santa Rosa (awos), CA20 mi24 minN 010.00 miMostly Cloudy57°F50°F78%1014.1 hPa
Petaluma Muni, CA20 mi22 minSSE 610.00 miFair54°F50°F88%1015.9 hPa
Novato/Gnoss Field Airport, CA24 mi42 minN 03.00 miFog/Mist52°F51°F100%1015.9 hPa

Wind History from O69 (wind in knots)
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Last 24hrS5S5S5SE5S6CalmCalmNW4NW3NW5CalmCalmCalmCalmCalmN5NW3NW5CalmSE3CalmSE3S3S5
1 day agoS8SE6S9SE6SE4CalmE4E4E3CalmE4CalmCalmW4CalmCalmCalmW3CalmCalmCalmCalmS5S5
2 days agoS8SE8S9S7S6SE3E3SE3E3SE3E4SE3E3CalmN3CalmCalmCalmCalmCalmCalmSE6SE10SE6

Tide / Current Tables for Tomales Bay entrance, California
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Tomales Bay Entrance
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Fri -- 04:29 AM PST     4.56 feet High Tide
Fri -- 07:06 AM PST     Sunrise
Fri -- 10:14 AM PST     2.35 feet Low Tide
Fri -- 12:06 PM PST     Moonrise
Fri -- 03:28 PM PST     4.32 feet High Tide
Fri -- 04:52 PM PST     Sunset
Fri -- 10:27 PM PST     0.10 feet Low Tide
Fri -- 11:43 PM PST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.12.23.34.14.54.54.23.632.62.42.42.83.43.94.34.33.93.12.21.30.60.10.2

Tide / Current Tables for Point Reyes, California Current
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Point Reyes
Click for Map
Fri -- 01:35 AM PST     1.09 knots Max Flood
Fri -- 05:03 AM PST     -0.00 knots Slack
Fri -- 07:06 AM PST     Sunrise
Fri -- 07:28 AM PST     -0.84 knots Max Ebb
Fri -- 11:07 AM PST     0.00 knots Slack
Fri -- 12:06 PM PST     Moonrise
Fri -- 01:44 PM PST     0.68 knots Max Flood
Fri -- 04:32 PM PST     -0.00 knots Slack
Fri -- 04:53 PM PST     Sunset
Fri -- 07:39 PM PST     -1.18 knots Max Ebb
Fri -- 11:25 PM PST     0.00 knots Slack
Fri -- 11:44 PM PST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.711.10.90.50-0.5-0.8-0.8-0.6-0.4-00.30.60.70.50.2-0.2-0.7-1.1-1.2-0.9-0.6-0.2

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 (15,3,4,5)
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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.