Wednesday, April23, 2014 L-36.com


Marine Weather and Tides
Dillon Beach, CA

Version 3.4
What's New / NOTES
11/18/2013 - I just got an email from NOAA saying all their network problems have been fixed. Sorry for the inconvenience.
11/16/2013 - NOAA worked over the last month to fix the load speed for our daily forecast. Then went from 60% fast loads to 99.8% fast loads.
8/5/2013 - Point forecast now loads in parallel and does not block rest of page.

Sunrise 6:21AMSunset 7:56PM Wednesday April 23, 2014 6:06 PM PDT (01:06 UTC) Moonrise 1:56AMMoonset 1:15PM Illumination 30% Phase: Waning Crescent; Moon at 24 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- 226 Pm Pdt Wed Apr 23 2014
Tonight..NW winds 10 kt. Wind waves 2 ft or less. NW swell 6 to 8 ft at 11 seconds. Slight chance of rain.
Thu..N winds 5 kt...becoming W in the afternoon. Wind waves 2 ft or less. W swell 5 to 7 ft at 11 seconds. Slight chance of rain through the day.
Thu night..W winds 10 kt. Wind waves 2 ft or less. W swell 6 to 8 ft at 11 seconds. Chance of rain.
Fri..W winds 5 to 15 kt. Wind waves 1 to 3 ft. W swell 6 to 8 ft at 11 seconds. Chance of showers and slight chance of Thunderstorms.
Fri night..NW winds 15 to 25 kt. Wind waves 3 to 5 ft. NW swell 7 to 9 ft at 10 seconds and sw 3 ft at 22 seconds. Slight chance of showers in the evening.
Sat..NW winds 5 to 15 kt. Wind waves 1 to 3 ft. NW swell 6 to 8 ft...decreasing to 5 to 7 ft. SW swell 3 to 4 ft. Slight chance of rain.
Sun..W winds 10 kt. Wind waves 2 ft or less. W swell 6 to 8 ft and sw 3 to 4 ft. Chance of showers.
Mon..NW winds 5 to 15 kt. Wind waves 1 to 3 ft. NW swell 6 to 8 ft and S 3 to 4 ft.
PZZ500 226 Pm Pdt Wed Apr 23 2014
Synopsis for the central california coast and bays including Monterey bay national marine sanctuaries.. West and northwest winds will prevail along the central coast into the weekend. Winds will be locally stronger along the coast...especially south of point sur tonight and Thursday. A long period south swell will impact the region late this week and over the weekend.

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 240022
afdmtr
area forecast discussion
national weather service san francisco bay area
522 pm pdt Wed apr 23 2014

Synopsis A storm system will bring cooler temperatures and
chances for precipitation back to the region late Thursday night
through the start of the upcoming weekend. Another weaker system
could bring rain chances to northern california Saturday night and
Sunday. Then high pressure will bring dry and warmer conditions to
the area next week.

Discussion As of 2:50 pm pdt Wednesday... Skies are mostly sunny
across the district and afternoon temperatures are running warmer
than yesterday at this time by several degrees... With readings in
the upper 50s to around 70. There is a moderate seabreeze as the
onshore gradient is around 2 mb from sfo to sac... Which is weaker
than 24 hours ago.

A weak system approaching the west coast will bring an increase in
cloudiness to northern california tonight. A slight chance of
showers is possible across the far northern portions of sonoma
county overnight... But rainfall amounts are expected to be light.

Rain chances will increase across northern california again Thursday
night as another cold front approaches the region. Rain showers
will be possible across the north bay late Thursday night and then
spread southward Friday morning as the boundary moves through. A
deeper mid/upper level trough will then sweep across central
california on Friday. With a moderately unstable airmass in
place... Thunderstorms will be possible Friday afternoon as the
main upper low center moves across. Forecast rainfall amounts are
marginal with this fast-moving system with up to a quarter of an
inch possible... Highest in the higher terrain. Showers are
expected to taper off by Saturday as the flow becomes more
northerly. Another weaker disturbance is then forecast to move across
northern california Saturday night and Sunday... Mainly affecting areas
from the bay area north.

High pressure is the progged to build over the west beginning on
Monday. This will bring dry conditions and warmer temperatures to
the district. Inland valley locations will easily warm into the
80s with some areas possibly hitting the lower 90s on Tuesday and
Wednesday.

Aviation As of 5:05 pm pdt Wednesday... Mainly clear skies this
afternoon will turn to partly to mostly cloud as high clouds
increase overnight as a cold front approaches from the northwest.

Winds will be gusty through this evening then diminish tonight.

MVFR CIGS expected late tonight across area terminals.

Vicinity of ksfo...VFR conditions expected through late tonight.

Will bring MVFR 06z over ksfo and 09z over koak. Gusty west winds
sustained around 20 kt with gusts near 30 kt will ease after
sunset tonight.

Ksfo bridge approach... Similar to ksfo.

Monterey bay area terminals...VFR conditions expected through
tonight with MVFR CIGS tomorrow morning. A gusty sea breeze around
10 to 15 kt will gradually ease this evening.

Marine As of 05:00 pm pdt Wednesday... West and northwest winds
will prevail along the central coast into the weekend. Winds will
be locally stronger along the coast... Especially south of point
sur tonight and Thursday. A long period south swell entering the
coastal waters Friday night/early Saturday. Initially 2-3ft with a
pd of 20 sec... Then 2-4ft with a pd of 18-19 sec on Saturday. The
south swell may get mixed out a little bit with a moderate NW wind
and moderate NW swell.

Mtr watches/warnings/advisories
Tngt Sca... Pt pinos to pt piedras blancas 0-10 nm
sca... Pt pinos to pt piedras blancas 10-60 nm
sca... Monterey bay until 11 pm
sca... Pigeon pt to pt pinos 0-10 nm until 11 pm
public forecast: sims
aviation: cw
marine: mm
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 mi76 min WNW 12 G 14 53°F 50°F7 ft1020.6 hPa (-0.8)
PRYC1 - 9415020 - Point Reyes, CA 18 mi36 min W 16 G 19 55°F 55°F1020.2 hPa
46214 - Point Reyes, CA (029) 33 mi40 min 54°F9 ft
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 35 mi76 min 12 G 16 53°F 6 ft
46237 - San Francisco Bar, CA (142) 37 mi35 min 54°F6 ft
RCMC1 - 9414863 - Richmond, CA 38 mi36 min WNW 8.9 G 13 63°F 60°F1018.8 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 40 mi36 min WNW 9.9 G 15 65°F 1019.1 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 40 mi42 min WNW 8.9 G 13 65°F 1018.4 hPa
FTPC1 - 9414290 - San Francisco, CA 41 mi36 min W 9.9 G 19 57°F 59°F1019.3 hPa
PXOC1 - 9414311 - San Francisco (Pier 1), CA 44 mi42 min W 11 G 17 60°F 1018.1 hPa
OBXC1 46 mi36 min 60°F 48°F
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 46 mi36 min W 13 G 15
OKXC1 - 9414776 - Oakland (Berth 34), CA 46 mi42 min W 11 G 13 61°F 1018.9 hPa
UPBC1 48 mi36 min WNW 18 G 23
MZXC1 - 9415102 - Martinez-Amorco CA 48 mi36 min W 18 G 21 63°F 62°F1017.8 hPa46°F
AAMC1 - 9414750 - Alameda, CA 49 mi36 min W 8.9 G 12 62°F 64°F1018.6 hPa
LNDC1 49 mi42 min W 8 G 13 63°F 1018.7 hPa

Wind History for Point Reyes, CA
(wind in knots)    EDIT      (on/off)   Help
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W14
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W7
G11
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G22
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G24
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G24
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W18
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NW14
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G27
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G21
NW14
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G19
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G14
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G8
W12
G17
W11
W14

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Santa Rosa (awos), CA20 mi73 minW 1210.00 miMostly Cloudy69°F44°F41%1017 hPa
Petaluma Muni, CA20 mi71 minW 17 G 2210.00 miFair63°F46°F56%1020 hPa
Novato/Gnoss Field Airport, CA24 mi71 minW 12 G 2010.00 miFair66°F44°F46%1018.6 hPa

Wind History from O69 (wind in knots)
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Last 24hrW15
G21
NW11
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NW9NW7NW11NW7W3CalmN4W6W6W3N3NW3W4W10NW8NW8W10
G14
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W13
G18
W13W11
G17
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G22
1 day agoW9W10W11W7W10NW6W12
G17
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W11W8W8NW4W8NW12
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G15
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G28
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G29
W16
G25
W18
G25
2 days agoNW7NW5NW4NW3NW3NW3NW4CalmN3CalmNW4N3N4CalmCalmNW5NE3CalmNW4W11W8NW5W7W16
G20

Tide / Current Tables for Tomales Bay entrance, California
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Tomales Bay Entrance
Click for Map
Wed -- 01:12 AM PDT     1.90 feet Low Tide
Wed -- 02:55 AM PDT     Moonrise
Wed -- 06:25 AM PDT     Sunrise
Wed -- 06:41 AM PDT     4.14 feet High Tide
Wed -- 01:41 PM PDT     -0.19 feet Low Tide
Wed -- 02:15 PM PDT     Moonset
Wed -- 07:55 PM PDT     Sunset
Wed -- 08:23 PM PDT     4.23 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.11.922.433.644.13.83.12.21.30.4-0.1-0.20.2123.13.84.24.23.83.1

Tide / Current Tables for Point Reyes, California Current
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Point Reyes
Click for Map
Wed -- 02:13 AM PDT     0.00 knots Slack
Wed -- 02:55 AM PDT     Moonrise
Wed -- 04:52 AM PDT     0.66 knots Max Flood
Wed -- 06:25 AM PDT     Sunrise
Wed -- 07:41 AM PDT     -0.00 knots Slack
Wed -- 10:43 AM PDT     -1.11 knots Max Ebb
Wed -- 02:15 PM PDT     Moonset
Wed -- 02:39 PM PDT     0.00 knots Slack
Wed -- 05:47 PM PDT     1.02 knots Max Flood
Wed -- 07:55 PM PDT     Sunset
Wed -- 08:56 PM PDT     -0.00 knots Slack
Wed -- 11:35 PM PDT     -0.89 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.6-0.4-0.10.30.60.70.60.3-0.2-0.7-1-1.1-1-0.7-0.30.20.7110.90.5-0-0.6-0.9

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 (21,6,7,8)
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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.