Friday, May29, 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 5:48AMSunset 8:28PM Friday May 29, 2015 3:04 PM PDT (22:04 UTC) Moonrise 3:45PMMoonset 2:33AM Illumination 89% Phase: Waxing Gibbous; Moon at 12 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- 233 Pm Pdt Fri May 29 2015
Tonight..NW winds 10 to 20 kt. Wind waves 2 to 4 ft. NW swell 2 to 3 ft at 12 seconds and sw 3 ft at 14 seconds. Patchy fog after midnight.
Sat..NW winds 5 to 15 kt. Wind waves 1 to 3 ft. NW swell 2 to 3 ft at 12 seconds and sw 3 ft at 14 seconds. Patchy fog in the morning.
Sat night..NW winds 5 to 15 kt. Wind waves 1 to 3 ft. W swell 2 to 3 ft at 11 seconds and sw 3 ft at 13 seconds. Patchy fog after midnight.
Sun..SW winds 5 kt. Wind waves 2 ft or less. W swell 2 to 3 ft at 12 seconds and sw 3 ft at 13 seconds. Patchy fog in the morning. Slight chance of showers through the day.
Sun night..SW winds 5 kt. Wind waves 2 ft or less. W swell 2 to 3 ft at 11 seconds and sw 3 ft at 14 seconds. Slight chance of showers.
Mon..W winds 10 kt. Wind waves 2 ft or less. W swell 2 ft. S swell 3 ft. Slight chance of showers.
Tue..NW winds 15 to 25 kt. Wind waves 3 to 5 ft. Mixed swell nw 4 to 6 ft and S 3 ft.
Wed..NW winds 15 to 25 kt. Wind waves 3 to 6 ft. NW swell 7 to 9 ft and S 3 ft.
PZZ500 233 Pm Pdt Fri May 29 2015
Synopsis for the central california coast and bays including Monterey bay national marine sanctuaries.. Generally light to locally moderate northwest winds are expected to prevail this evening...the strongest winds are expected south of point sur. Winds are anticipated to further decrease on Saturday and become southerly by Sunday as a low pressure system approaches from the west. Winds will strengthen out of the north once again early next week as a thermal trough builds over california.

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 292043
afdmtr
area forecast discussion
national weather service san francisco bay area
143 pm pdt Fri may 29 2015

Synopsis No big weather changes forecast for Saturday with
coastal stratus spreading inland overnight. By Sunday a system
will approach the coast with a slight chance of showers in the far
north bay. As the system approaches the marine layer will deepen
and cooler weather will return Sunday afternoon with onshore flow.

Seasonable temperatures and continued dry weather forecast Monday
through the middle of next week.

Discussion As of 1:43 pm pdt Friday... Visible satellite imagery
shows that low clouds have cleared from most areas. The exceptions
are most of the san francisco peninsula as well as the southern
monterey bay and monterey peninsula. These areas are running cooler
than yesterday at this time with readings in the 50s... But
locations farther inland are several degrees warmer... With 60s and
70s. Expect low clouds to spread inland once again tonight as the
marine layer depth remains around 1600 feet and the surface
pressure gradient is strong onshore at 3.1 mb from sfo to sac.

Little change is expected in the overall weather pattern for
Saturday... But on Sunday an approaching upper level trough will
ramp up the onshore flow and cool temperatures somewhat. There
remains a slight chance of light rain across the far northern
portions of the north bay Saturday night and Sunday... But the more
likely scenario will be an increased chance of coastal drizzle by Monday
morning.

Medium range models keep a zonal flow aloft across northern
california through much of next week. Thus... Onshore flow will
keep seasonably cool temperatures across the area. Night and
morning coastal stratus will be the norm for the first week of june.

Aviation As of 10:55 am pdt Friday... Today the marine layer is
behaving much more like it typically does this time of year. The
fort ord profiler is indicating that the marine layer is hanging
in at about 1500 feet... Typical for this time of year. The visible
satellite image is showing the stratus eroding quickly out the
southern portion of san francisco bay which will allow for visuals
shortly. The visible satellite image is also showing monterey
socked in but there is evidence of an eddie forming in monterey
bay which may give some relief from the stratus this afternoon.

Stratus will return to all terminal late this afternoon/early
evening.

Vicinity of ksfo... Visuals should are in the near future withVFR
anticipated through early evening with bkn-ovc012 by
0200z... Deteriorating to ovc007 by 0500z. First guess at tomorrows
clear around 1830z. The sea breeze will reach 20 kt this afternoon
with gusts to 25 kt
confidence is high.

Ksfo bridge approach... Similar to ksfo.

Monterey bay area terminals... Ksns should becomeVFR around 1915z
this with kmry remaining ifr ovc007 through at least 2000z at which
point MVFR bkn-ovc012 will be possible. An eddy has formed in
monterey bay which may allow forVFR at mry this afternoon but
confidence is low at this point. Stratus is expected to return to
ksns by around 0400z. The sea breeze will reach 10 to 15kt this
afternoon.

Confidence is low for kmry.

Confidence is high for ksns.

Marine As of 01:19 pm pdt Friday... Generally light to locally
moderate northwest winds are expected to prevail today... The
strongest winds are expected south of point sur and along the
sonoma coast. Winds are anticipated to decrease on Saturday and
become southerly on Sunday as a low pressure system approaches
from the west. Winds will strengthen out of the north once again
early next week as a thermal trough builds over california.

Mtr watches/warnings/advisories
Tngt Sca... Pt pinos to pt piedras blancas 0-10 nm until 11 pm
sca... Pt pinos to pt piedras blancas 10-60 nm until 11 pm
sca... Sf bay north of the bay bridge until 8 pm
sca... Sf bay south of the bay bridge until 11 pm
public forecast: sims
aviation/marine: larry
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 mi74 min NW 9.7 G 14 51°F 51°F5 ft1015.7 hPa (+0.0)
PRYC1 - 9415020 - Point Reyes, CA 18 mi94 min 1015.7 hPa
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 35 mi74 min WNW 14 G 16 52°F 53°F4 ft1016.3 hPa (-0.3)
46237 - San Francisco Bar, CA (142) 37 mi22 min 56°F4 ft
RCMC1 - 9414863 - Richmond, CA 38 mi94 min 1015.1 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 40 mi94 min 1014.1 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 40 mi94 min 1015.6 hPa
FTPC1 - 9414290 - San Francisco, CA 41 mi94 min 1015.7 hPa
PXOC1 - 9414311 - San Francisco (Pier 1), CA 44 mi94 min 1014.7 hPa
PXSC1 44 mi154 min 55°F
OBXC1 46 mi154 min 54°F
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 46 mi154 min WSW 7 G 9.9
OKXC1 - 9414776 - Oakland (Berth 34), CA 46 mi94 min 1015.7 hPa
UPBC1 48 mi154 min WNW 13 G 17
MZXC1 - 9415102 - Martinez-Amorco CA 48 mi154 min WNW 15 G 16 65°F 64°F1013.4 hPa
LNDC1 49 mi94 min 1015.7 hPa
AAMC1 - 9414750 - Alameda, CA 49 mi94 min 1015.4 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 mi71 minVar 510.00 miPartly Cloudy73°F53°F50%1012.9 hPa
Petaluma Municipal Airport, CA20 mi69 minWNW 610.00 miFair72°F55°F57%1014.9 hPa
Novato / Gnoss Field, CA24 mi69 minS 410.00 miFair70°F55°F60%1014.6 hPa

Wind History from O69 (wind in knots)
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Last 24hrNW8W8W11W8W9NW6NW4NW8W4NW3CalmCalmCalmCalmSW3S4CalmSE3CalmE3CalmW4W6NW6
1 day agoW10
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W11W8W8W5W5CalmCalmCalmCalmN4W3SW3SW3SW4CalmNW3NW4NW4W5W10
2 days agoW12
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W6W9W8W8W7NW6W7NW3CalmSW5W7W5CalmNW3W4CalmCalmCalmNW4NW5NW5W8

Tide / Current Tables for Tomales Bay entrance, California
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Tomales Bay Entrance
Click for Map
Fri -- 03:33 AM PDT     Moonset
Fri -- 04:02 AM PDT     0.53 feet Low Tide
Fri -- 05:51 AM PDT     Sunrise
Fri -- 09:58 AM PDT     3.13 feet High Tide
Fri -- 03:20 PM PDT     1.41 feet Low Tide
Fri -- 04:44 PM PDT     Moonrise
Fri -- 08:27 PM PDT     Sunset
Fri -- 09:35 PM PDT     4.70 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
32.21.30.70.50.71.21.92.533.132.62.11.71.41.51.92.63.44.24.64.74.3

Tide / Current Tables for Point Reyes, California Current
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Point Reyes
Click for Map
Fri -- 12:44 AM PDT     -1.03 knots Max Ebb
Fri -- 03:34 AM PDT     Moonset
Fri -- 04:45 AM PDT     0.00 knots Slack
Fri -- 05:52 AM PDT     Sunrise
Fri -- 07:44 AM PDT     0.81 knots Max Flood
Fri -- 10:35 AM PDT     -0.00 knots Slack
Fri -- 01:01 PM PDT     -0.70 knots Max Ebb
Fri -- 04:33 PM PDT     0.00 knots Slack
Fri -- 04:44 PM PDT     Moonrise
Fri -- 07:28 PM PDT     0.81 knots Max Flood
Fri -- 08:27 PM PDT     Sunset
Fri -- 10:22 PM PDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-1-1-0.9-0.7-0.40.10.50.80.80.70.3-0.2-0.6-0.7-0.6-0.5-0.20.20.60.80.80.60.2-0.4

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 (18,4,5,8)
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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.