Friday, July31, 2015 L-36.com


Marine Weather and Tides
Dillon Beach, CA

Version 3.4
What's New / NOTES
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.
1/11/2015 - Updated Marine Zones because NOAA split some zones on the East Coast. You may need to edit or your forecast section.

Sunrise 6:11AMSunset 8:22PM Friday July 31, 2015 12:21 PM PDT (19:21 UTC) Moonrise 7:32PMMoonset 5:35AM Illumination 100% Phase: Full Moon; Moon at 15 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- 904 Am Pdt Fri Jul 31 2015
Today..W winds 10 kt. Wind waves 2 ft or less. Mixed swell nw 2 to 3 ft at 9 seconds and S 3 ft at 14 seconds.
Tonight..W winds 10 kt. Wind waves 2 ft or less. NW swell 2 to 3 ft at 8 seconds.
Sat..S winds 10 kt. Wind waves 2 ft or less. NW swell 3 to 4 ft at 8 seconds.
Sat night..SW winds 10 kt. Wind waves 2 ft or less. NW swell 3 to 4 ft at 8 seconds.
Sun..W winds 5 kt. Wind waves 2 ft or less. NW swell 2 to 4 ft at 8 seconds. Patchy fog after midnight.
Mon..W winds 5 to 15 kt. Wind waves 1 to 3 ft. NW swell 2 ft. Patchy fog.
Tue..W winds 10 kt. Wind waves 2 ft or less. NW swell 2 to 3 ft. Patchy fog.
PZZ500 904 Am Pdt Fri Jul 31 2015
Synopsis for the central california coast and bays including Monterey bay national marine sanctuaries.. Light northwest winds across the coastal waters today with the strongest winds located in the northern san francisco bay... Especially around angel island. Isolated showers and Thunderstorms will be possible this morning.

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 311809
afdmtr
area forecast discussion
national weather service san francisco bay area
1109 am pdt Fri jul 31 2015

Synopsis A cooling trend can be expected today and through the
weekend. Subtropical moisture streaming into our area may produce
a few isolated showers and thunderstorms today and tonight.

Discussion As of 8:35 am pdt Friday... Line of showers that had
been across a portion of monterey and san benito counties has
greatly diminished over the past 30 minutes. In fact... Last couple
of images from the kmux radar shows virtually no shower activity
left since the band has moved into santa cruz and santa clara
counties. The trigger for the showers appears to be a weak
vortmax/shortwave currently moving northward through our cwa.

Latest models in continue to downplay the threat of convection
through our area however in light of the small band that developed
this morning will keep a mention of showers and thunderstorms
today for all locations. Will make adjustments to the pops for the
afternoon shift if nothing fires by then.

Overall forecast package looks to be on track.

Previous discussion Kmux radar has been showing echoes moving
from southeast to northwest across monterey and san benito
counties for the past several hours. Salinas airport was reporting
light rain during last hour's observation... And there is evidence
of a trace of rain falling within the last hour here at the
weather office in monterey. A few other observations on mesowest
have reported a couple hundredths of an inch... Laguna
seca... Pebble beach to name a few. These showers will continue to
move to the northwest out over the ocean this morning. Additional
convection is expected to develop by this afternoon mainly across
the higher terrain. Shower chances are expected to wane by
Saturday morning as the flow becomes more westerly.

Onshore flow will continue during the weekend which will bring
cooler temperatures to even inland areas. By early next week... An
upper level low over the gulf of alaska will deepen and its
associated trough will extend along the west coast. This will keep
cooler temps across the district as well as breezy north winds
over the coastal waters and near-shore areas.

Aviation As of 11:10 am pdt Friday... For 18z tafs...

widespreadVFR conditions through the day as monsoonal moisture
saturates the mid levels and brings sct to bkn clouds between 12k
to 20 k ft agl. Isolated showers and thunderstorms associated
with a meso low will be moving through the bay area btwn 18z - 21z
today but impacts should be minimal. Marine layer returns tonight
and will persist slightly later into the morning than this
morning.

Vicinity of ksfo... VFR. Light winds will increase to around 15
to 20 kt expected this afternoon. Vicinity showers early this
afternoon. Marine layer returns AOA 07z sat.

Ksfo bridge approach... Similar to ksfo.

Monterey bay area terminals...VFR with a few to some mid level
clouds aloft. Marine layer returns AOA 03z sat.

Marine As of 11:05 am pdt Friday... Light northwest winds across
the coastal waters today with the strongest winds located in the
northern san francisco bay... Especially around angel island.

Isolated showers and thunderstorms will be possible this morning.

Mtr watches/warnings/advisories
Tngt Sca... Sf bay until 9 pm
public forecast: bell/sims
aviation: drp
marine: cw
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 17 mi32 min NNW 1.9 G 1.9 58°F 58°F3 ft1016.7 hPa (-0.3)
PRYC1 - 9415020 - Point Reyes, CA 18 mi34 min W 5.1 G 8.9 61°F 64°F1016.9 hPa
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 35 mi32 min WNW 5.8 G 5.8 59°F 59°F3 ft1017.5 hPa (-0.7)
46237 - San Francisco Bar, CA (142) 37 mi40 min 62°F3 ft
RCMC1 - 9414863 - Richmond, CA 38 mi34 min SSE 7 G 11 66°F 69°F1016.1 hPa
TIBC1 - Tiburon Pier, San Francisco Bay, CA 38 mi45 min 67°F
PPXC1 - 9414847 - Richmond (Point Potrero), CA 40 mi34 min SW 11 G 15 64°F 1016.5 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 40 mi34 min W 7 G 9.9 68°F 1015.6 hPa
FTPC1 - 9414290 - San Francisco, CA 41 mi34 min WSW 4.1 G 11 61°F 65°F1017 hPa
PXSC1 44 mi34 min 63°F 58°F
PXOC1 - 9414311 - San Francisco (Pier 1), CA 44 mi34 min WSW 7 G 12 63°F 1015.8 hPa
OBXC1 46 mi34 min 63°F 59°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 46 mi34 min SW 7 G 9.9 65°F 1016.8 hPa
MZXC1 - 9415102 - Martinez-Amorco CA 48 mi34 min WNW 16 G 18 67°F 72°F1014.8 hPa59°F
UPBC1 48 mi34 min WNW 16 G 20
LNDC1 49 mi34 min SW 8.9 G 12 64°F 1016.7 hPa
AAMC1 - 9414750 - Alameda, CA 49 mi34 min WSW 6 G 12 64°F 72°F1016.5 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, CA20 mi29 minSSW 310.00 miPartly Cloudy70°F57°F66%1015.1 hPa
Petaluma Municipal Airport, CA20 mi27 minW 10 G 1510.00 miA Few Clouds68°F59°F73%1016.9 hPa
Novato / Gnoss Field, CA24 mi27 minNNW 1110.00 miFair75°F59°F57%1015.9 hPa

Wind History from O69 (wind in knots)
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Last 24hrNW4W7NW8W12
G16
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NW6NW5NW6NW9NW6W5NW7W5W7NW6NW6W5NW6W7
1 day agoN3W9W10
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NW7NW6NW6NW6NW3NW4NW7W8W10NW8W8W6NW6NW6NW5NW5
2 days agoSW3W9W12W10
G18
NW8NW7NW6NW3NW5NW4NW5--NW4NW3NW3--N3--N3----W3W3W5

Tide / Current Tables for Tomales Bay entrance, California
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Tomales Bay Entrance
Click for Map
Fri -- 03:45 AM PDT     Full Moon
Fri -- 06:13 AM PDT     Sunrise
Fri -- 06:22 AM PDT     -0.98 feet Low Tide
Fri -- 06:34 AM PDT     Moonset
Fri -- 12:50 PM PDT     4.33 feet High Tide
Fri -- 06:03 PM PDT     1.81 feet Low Tide
Fri -- 08:22 PM PDT     Sunset
Fri -- 08:31 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
5.74.93.72.20.7-0.4-0.9-0.8-0.112.33.44.14.343.42.72.11.822.73.74.85.6

Tide / Current Tables for Point Reyes, California Current
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Point Reyes
Click for Map
Fri -- 12:09 AM PDT     -0.00 knots Slack
Fri -- 03:23 AM PDT     -1.65 knots Max Ebb
Fri -- 03:45 AM PDT     Full Moon
Fri -- 06:14 AM PDT     Sunrise
Fri -- 06:35 AM PDT     Moonset
Fri -- 07:13 AM PDT     0.00 knots Slack
Fri -- 10:13 AM PDT     1.31 knots Max Flood
Fri -- 01:32 PM PDT     -0.00 knots Slack
Fri -- 03:56 PM PDT     -0.99 knots Max Ebb
Fri -- 07:09 PM PDT     0.00 knots Slack
Fri -- 08:22 PM PDT     Sunset
Fri -- 08:31 PM PDT     Moonrise
Fri -- 10:03 PM PDT     1.06 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.1-0.6-1.2-1.6-1.6-1.3-0.8-0.20.51.11.31.20.90.4-0.3-0.8-1-0.8-0.5-0.10.40.91.10.9

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.