Saturday, May27, 2017 L-36.com


Marine Weather and Tides
Danville, CA

Version 3.4
What's New / NOTES
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
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.

Sunrise 5:47AMSunset 8:22PM Saturday May 27, 2017 4:46 AM PDT (11:46 UTC) Moonrise 6:53AMMoonset 9:35PM Illumination 4% Phase: Waxing Crescent; Moon at 2 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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PZZ530 San Pablo Bay Suisun Bay The West Delta And San Francisco Bay North Of The Bay Bridge- 317 Am Pdt Sat May 27 2017
.small craft advisory in effect from Sunday morning through late Sunday night...
Today..SW winds 10 to 20 kt. Patchy fog in the morning.
Tonight..SW winds 10 to 20 kt.
Sun..SW winds 10 to 20 kt.
Sun night..SW winds 10 to 20 kt.
Memorial day..SW winds 15 to 25 kt.
Tue..SW winds 10 to 20 kt.
Wed..SW winds 10 kt...increasing to 10 to 20 kt.
PZZ500 317 Am Pdt Sat May 27 2017
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Light west winds through the morning. Northwest winds will begin to increase later today and through the memorial day weekend as high pressure builds offshore. The swell train will be generally 5 foot or less through the forecast period so wind waves will dominate the sea state.

7 Day Forecast for Marine Location Near Danville, CA
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location: 37.79, -122     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 271100
afdmtr
area forecast discussion
national weather service san francisco bay area
400 am pdt Sat may 27 2017

Synopsis Dry with seasonable temperatures for much of the
holiday weekend. The next trough and associated cooling trend
arrives Tuesday and Wednesday with long range trends indicating
dry and benign weather pattern.

Discussion As of 4:00 am pdt Saturday... Cloud coverage is much
more patchy this morning compared to 24 hours ago with profiler
data showing a weak inversion above 4000 feet. At this time clouds
are most numerous around sf bay, marin county and the santa clara
valley. Clouds will likely continue to expand through sunrise but
given the patchy nature inland and cooling aloft expect skies to
turn mostly sunny much earlier today as high pressure builds. The
increased sunshine will lead to a noted warming trend today,
especially after such a cool Friday where most climate sites
stayed in the 60s or struggled to reach around 70 even inland. It
should be a nice start to the holiday weekend with widspread 70s
away from the coast and even some lower 80s for the warmest inland
spots while the coast should see peaks of sunshine with beach
temps in the lower 60s.

High pressure will nose over the region on Sunday with 850 mb
temps this morning around 12 celsius approaching 18 celsius inland
on Sunday afternoon. This should lead to a pronounced warming
trend for inland areas with more widespread 80s.

In general weather should be nice for memorial day but increasing
onshore flow ahead of the next trough will likely bring some gusty
west winds to the beaches with increased marine clouds. Inland
areas should enjoy another sunny and seasonably warm afternoon on
Monday for those looking to enjoy outdoor activities.

A fairly well defined upper trough will approach CAPE mendocino by
early Tuesday morning and likely bring some coastal drizzle and
increased marine push of clouds for Tuesday morning. In addition
temperatures will trend cooler again with a synoptically cooler
airmass aloft. Surface pressure gradients will increase such that
breezy west winds are forecast both Tuesday and weds in what will
likely be a fairly cool end to the month.

Ecmwf shows dry with high pressure for the start of june into the
first weekend of the month.

Aviation As of 10:45 pm pdt Friday... Low clouds cleared from
most terminals on Friday evening. But significant moisture remains
in the boundary layer and so it's likely that most terminals will
develop MVFR ceilings overnight, continuing through much of
Saturday morning.VFR expected at all terminals by midday
Saturday. Light southwest winds overnight will turn to the west
and northwest on Saturday afternoon and increase.

Vicinity of ksfo...VFR early in period with MVFR ceilings likely
to develop overnight... Most likely around 09z although confidence
is low concerning timing. Clearing expected to take place by
17-18z Saturday morning withVFR conditions for the remainder of
the day. Light westerly winds overnight, increasing Saturday
afternoon.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals...VFR early in period with MVFR ceilings
likely to develop by 08z and continue until 19z Saturday. Light
winds.

Marine As of 03:46 am pdt Saturday... Light west winds through
the morning. Northwest winds will begin to increase later today
and through the memorial day weekend as high pressure builds
offshore. The swell train will be generally 5 foot or less
through the forecast period so wind waves will dominate the sea
state.

Mtr watches warnings advisories
Tday Sca... Pt pinos to pt piedras blancas 0-10 nm from 3 pm
sca... Mry bay from 3 pm
public forecast: rww
aviation: drp
marine: drp
visit us at

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
LNDC1 15 mi52 min SW 6 G 8 55°F 1017.6 hPa
AAMC1 - 9414750 - Alameda, CA 16 mi46 min WSW 7 G 8.9 55°F 62°F1018 hPa (+0.0)
OKXC1 - 9414776 - Oakland (Berth 34), CA 18 mi46 min WSW 6 G 8 55°F 1017.6 hPa (+0.0)
PCOC1 - 9415144 - Port Chicago, CA 18 mi46 min WSW 11 G 14 55°F 64°F1017.2 hPa (+0.0)
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 18 mi46 min WNW 9.9 G 15 55°F 1016.8 hPa (+0.3)
UPBC1 18 mi46 min W 9.9 G 12
OBXC1 18 mi46 min 55°F 49°F
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 18 mi46 min SW 8.9 G 11
MZXC1 - 9415102 - Martinez-Amorco CA 18 mi46 min W 7 G 11 54°F 63°F1017.7 hPa (+0.0)51°F
PXSC1 21 mi46 min 55°F 48°F
PPXC1 - 9414847 - Richmond (Point Potrero), CA 21 mi46 min SW 7 G 8.9 55°F 1017.8 hPa (+0.0)
PXOC1 - 9414311 - San Francisco (Pier 1), CA 21 mi82 min W 4.1 G 7 54°F 1016.5 hPa
RTYC1 - 9414523 - Redwood City, CA 23 mi46 min SW 2.9 G 4.1 55°F 67°F1017.2 hPa (+0.0)
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 23 mi46 min W 8 G 12 55°F 1017.2 hPa (+0.0)
RCMC1 - 9414863 - Richmond, CA 24 mi46 min SSW 5.1 G 6 55°F 58°F1017.4 hPa (+0.0)
FTPC1 - 9414290 - San Francisco, CA 25 mi46 min SSW 1.9 G 4.1 54°F 55°F1017.9 hPa (+0.0)
TIBC1 - Tiburon Pier, San Francisco Bay, CA 25 mi44 min Calm 54°F 1018 hPa
SFXC1 - San Francisco Bay Reserve, CA 28 mi61 min WNW 5.1 51°F 1017 hPa49°F
46237 - San Francisco Bar, CA (142) 34 mi46 min 55°F3 ft
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 45 mi56 min WSW 5.8 G 7.8 53°F 54°F4 ft1017.6 hPa (+0.0)

Wind History for Alameda, CA
(wind in knots)    EDIT      (on/off)   Help
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SW14
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Livermore, Livermore Municipal Airport, CA11 mi53 minW 310.00 miOvercast52°F46°F83%1017 hPa
Hayward, Hayward Air Terminal, CA11 mi52 minWSW 410.00 miOvercast58°F46°F65%1018.3 hPa
Concord, Buchanan Field, CA13 mi53 minSW 410.00 miPartly Cloudy53°F48°F83%1016.1 hPa
Oakland, Metro Oakland International Airport, CA13 mi53 minW 810.00 miOvercast57°F48°F74%1017.6 hPa
San Francisco, San Francisco International Airport, CA22 mi50 minSW 710.00 miA Few Clouds54°F46°F75%1017.6 hPa
San Carlos Airport, CA22 mi56 minN 010.00 miOvercast54°F46°F77%1017.9 hPa

Wind History from LVK (wind in knots)
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Last 24hrW12W9W10SW9S9SW10SW8--SW5SW8SW11SW8W8
G17
NW10W12W12W10W11W9W8W6NW3CalmW3
1 day agoW13SW8SW12W12
G20
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2 days agoW10W8NW7NW8W5NW5NW5W8W14W12
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NW12W14NW13NW12W13W12W14W13W14NW8W11
G16
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G21

Tide / Current Tables for Oakland Airport, San Francisco Bay, California
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Oakland Airport
Click for Map
Sat -- 01:19 AM PDT     7.68 feet High Tide
Sat -- 05:50 AM PDT     Sunrise
Sat -- 07:55 AM PDT     Moonrise
Sat -- 08:07 AM PDT     -1.72 feet Low Tide
Sat -- 03:17 PM PDT     5.78 feet High Tide
Sat -- 08:05 PM PDT     2.11 feet Low Tide
Sat -- 08:21 PM PDT     Sunset
Sat -- 10:35 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
77.67.56.54.62.40.3-1.2-1.7-1.4-0.412.545.25.85.64.73.52.52.12.43.34.6

Tide / Current Tables for Oakland Harbor High Street Bridge, San Francisco Bay, California Current
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Oakland Harbor High Street Bridge
Click for Map
Sat -- 01:02 AM PDT     -0.00 knots Slack
Sat -- 04:06 AM PDT     -2.41 knots Max Ebb
Sat -- 05:50 AM PDT     Sunrise
Sat -- 07:55 AM PDT     Moonrise
Sat -- 08:18 AM PDT     0.01 knots Slack
Sat -- 11:06 AM PDT     2.36 knots Max Flood
Sat -- 02:46 PM PDT     -0.01 knots Slack
Sat -- 04:45 PM PDT     -1.20 knots Max Ebb
Sat -- 08:15 PM PDT     0.00 knots Slack
Sat -- 08:21 PM PDT     Sunset
Sat -- 10:35 PM PDT     Moonset
Sat -- 10:52 PM PDT     1.60 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.90-1-2-2.4-2.2-1.7-1.1-0.30.91.92.42.21.70.8-0.2-1-1.2-1-0.6-0.10.61.41.6

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 (7,2,3,4)
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Ground Weather Radar Station San Francisco Bay Area, 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.