Wednesday, June28, 2017 L-36.com


Marine Weather and Tides
San Leandro, CA

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
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 5:48AMSunset 8:35PM Wednesday June 28, 2017 10:37 AM PDT (17:37 UTC) Moonrise 10:00AMMoonset 11:15PM Illumination 22% Phase: Waxing Crescent; Moon at 5 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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PZZ531 San Francisco Bay South Of The Bay Bridge- 840 Am Pdt Wed Jun 28 2017
Today..W winds 5 to 15 kt. Patchy fog late in the morning.
Tonight..W winds 5 to 15 kt. Patchy fog after midnight.
Thu..W winds 10 kt...increasing to 10 to 20 kt in the afternoon. Patchy fog in the morning.
Thu night..W winds 15 to 25 kt. Patchy fog after midnight.
Fri..W winds 10 to 20 kt. Patchy fog in the morning. Patchy fog after midnight.
Sat..SW winds 5 to 15 kt. Patchy fog.
Sun..SW winds 10 kt. Patchy fog.
PZZ500 840 Am Pdt Wed Jun 28 2017
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Northerly winds will continue to increase along the central coast as high pressure builds off the coast. Gusty winds will result in hazardous sea conditions with steep wind waves and fresh swell.

7 Day Forecast for Marine Location Near San Leandro, CA
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location: 37.68, -122.17     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 281549
afdmtr
area forecast discussion
national weather service san francisco bay area
849 am pdt Wed jun 28 2017

Synopsis Marine air and stratus filtering inland on onshore winds
will persist causing near to slightly cooler than normal temperatures
today. Somewhat warmer temperatures will develop Thursday and Friday.

Except for patchy coastal drizzle, dry weather will persist over the
next 7 days. Night and morning coastal clouds will be followed by sunny
afternoons.

Discussion As of 8:49 am pdt Wednesday... Marine layer around
2000 feet deep this morning with stratus covering most of the
valleys. Onshore gradients around 2 mb but with ridge
strengthening slightly should allow for low clouds to clear back
to the coast by late morning. Looking over the current forecast
sky and temperature grids not seeing any reason for updates. Ridge
to strengthen slightly on Thursday should compress the marine
layer closer to 1500 feet with a little less inland penetration of
stratus for Thursday morning. Temperatures will run near or
slightly below normal today and then trend a few degrees warmer
inland for Thursday. Next shortwave upper trough approaches late
Friday evening and will likely induce a strong seabreeze and
deepening of the marine layer. In general the next 7 days through
the 4th of july holiday looks seasonable for late june early july
with night and morning low clouds followed by sunny and warm
afternoons.

Prev discussion As of 3:37 am pdt Wednesday... It's a fairly typical
summer stratus and fog pattern over the bay area and north central
coast this morning. The sfo-sac pressure gradient is 2.6 mb resulting
in onshore winds carrying ocean based stratus inland this morning in
a marine layer 1500-2000 feet deep. In addition to patchy fog, patchy
light drizzle has also been reported along the immediate coastline
since late last evening.

An upper level geopotential height ridge over the eastern pacific will
gradually advance toward the area late this week. Nearly stationary
lower to mid level thermal ridging over california will tend to
merge with the height ridge steadily strengthening the height ridge
as well as marine inversions through late week, and likely compress
inversions causing more favorable conditions for fog. Diurnal
warming contrasts between land and ocean will strengthen the
afternoon and evening sea-breezes causing stratus and fog to move
inland each night and morning; patchy dense fog may become more
favorable at times, mainly night-time and morning, from late week
into this weekend.

Aviation As of 04:35 am pdt Wednesday... For 12z tafs. It's
summer and the marine layer is strong. Low clouds filled back in
overnight at all terminals. Better defined layer than 24 hours ago
with higher cig heights. CIGS range from ifr to MVFR. Will follow
a more standard burnoff 17-18z.VFR this afternoon with lingering
cigs along the coast. CIGS return tonight.

Moderate confidence.

Vicinity of ksfo... MVFR CIGS through 17-18z. Sfo currently showing
only a bkn at 3k ft, but will put low cig in TAF as it should
lower by sunrise. Gusty winds up to 25 kt this afternoon.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals... Ifr CIGS through 17-18z, but fog seems
less likely. VFR this afternoon.

Marine As of 08:38 am pdt Wednesday... Moderate to locally
strong northerly winds will prevail along the central coast as
high pressure builds off the coast. Gusty winds will result in
hazardous conditions with steep wind waves and fresh swell.

Mtr watches warnings advisories
Tday Sca... Pt reyes to pigeon pt 0-10 nm from 3 pm
sca... Pigeon pt to pt pinos 0-10 nm from 3 pm
sca... Pt arena to pt reyes 0-10 nm
sca... Pt pinos to pt piedras blancas 0-10 nm
sca... Pt arena to pigeon pt 10-60 nm
sca... Pigeon pt to pt piedras blancas 10-60 nm from 3 pm
sca... Mry bay from 3 pm
sca... Sf bay from 11 am
public forecast: rww
aviation: bam
marine: bam
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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
AAMC1 - 9414750 - Alameda, CA 9 mi50 min WSW 8 G 9.9 56°F 67°F1015.1 hPa
LNDC1 10 mi56 min SSW 8 G 9.9 57°F 1014.5 hPa
RTYC1 - 9414523 - Redwood City, CA 12 mi50 min NNW 1.9 G 1.9 62°F 72°F1013.9 hPa
OBXC1 12 mi50 min 57°F 55°F
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 12 mi50 min SW 9.9 G 11
OKXC1 - 9414776 - Oakland (Berth 34), CA 13 mi50 min SW 6 G 8 57°F 1014.5 hPa
PXOC1 - 9414311 - San Francisco (Pier 1), CA 14 mi50 min W 4.1 G 9.9 56°F 1013.5 hPa
PXSC1 15 mi50 min 57°F 55°F
FTPC1 - 9414290 - San Francisco, CA 18 mi50 min SSW 2.9 G 7
PPXC1 - 9414847 - Richmond (Point Potrero), CA 19 mi50 min SSW 12 G 16 56°F 1014.4 hPa
TIBC1 - Tiburon Pier, San Francisco Bay, CA 21 mi71 min ESE 6 55°F 1014 hPa
RCMC1 - 9414863 - Richmond, CA 21 mi50 min S 8 G 13
MZXC1 - 9415102 - Martinez-Amorco CA 25 mi50 min WNW 9.9 G 11 63°F 69°F1013.3 hPa57°F
UPBC1 25 mi50 min WNW 9.9 G 11
46237 - San Francisco Bar, CA (142) 26 mi68 min 57°F5 ft
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 26 mi50 min WSW 9.9 G 13 60°F 1013.3 hPa
PCOC1 - 9415144 - Port Chicago, CA 27 mi50 min WSW 5.1 G 11 65°F 69°F1012.9 hPa
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 29 mi50 min WNW 11 G 16 66°F 1012.3 hPa
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 36 mi48 min NW 14 G 19 55°F 56°F6 ft1014.5 hPa (+0.8)
SFXC1 - San Francisco Bay Reserve, CA 37 mi113 min WNW 11 62°F 1013 hPa56°F
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA 44 mi48 min NW 14 G 18 55°F 56°F8 ft1015 hPa (+0.9)
PRYC1 - 9415020 - Point Reyes, CA 48 mi50 min NW 12 G 17 56°F 55°F1014 hPa

Wind History for Alameda, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Oakland, Metro Oakland International Airport, CA3 mi45 minWSW 1010.00 miOvercast62°F55°F78%1014.7 hPa
Hayward, Hayward Air Terminal, CA3 mi44 minW 410.00 miMostly Cloudy63°F51°F65%1015.3 hPa
San Francisco, San Francisco International Airport, CA11 mi42 minW 1010.00 miMostly Cloudy59°F52°F78%1014.6 hPa
San Carlos Airport, CA11 mi51 minVar 310.00 miA Few Clouds61°F53°F77%1014.9 hPa
Palo Alto Airport, CA14 mi1.8 hrsNE 58.00 miPartly Cloudy63°F55°F77%1014.6 hPa
Mountain View, Moffett Field, CA18 mi42 minNNE 710.00 miFair67°F55°F66%1014.7 hPa
Livermore, Livermore Municipal Airport, CA19 mi45 minW 610.00 miFair65°F53°F66%1013.4 hPa
Half Moon Bay Airport, CA21 mi43 minWNW 63.00 miFog/Mist55°F53°F94%1015.6 hPa
Concord, Buchanan Field, CA22 mi45 minS 1410.00 miFair66°F54°F65%1011.9 hPa

Wind History from OAK (wind in knots)
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Last 24hrW11W11W12W14W15W14W16W16W17W15W17W11W13W13W9W6SW8SW11SW9SW9W10SW8W12W10
1 day agoW11W12W13W16W15W15W18W18W18W18W17W17W15W12W15W16W13W12W16W15W12W12W10W9
2 days agoW12W9W14W14W15W14W15W15W18
G24
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Tide / Current Tables for Roberts Landing, 1.3 miles west of, San Francisco Bay, California
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Roberts Landing
Click for Map
Wed -- 03:51 AM PDT     7.09 feet High Tide
Wed -- 05:49 AM PDT     Sunrise
Wed -- 11:00 AM PDT     Moonrise
Wed -- 11:03 AM PDT     -0.53 feet Low Tide
Wed -- 05:44 PM PDT     6.85 feet High Tide
Wed -- 08:34 PM PDT     Sunset
Wed -- 11:45 PM PDT     2.35 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.24.45.76.77.16.75.64.12.40.8-0.2-0.5-0.20.92.44.15.66.66.86.35.44.23.12.5

Tide / Current Tables for Mulford Gardens Channel #2 SSW, South San Francisco Bay, California Current
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Mulford Gardens Channel #2 SSW
Click for Map
Wed -- 12:52 AM PDT     0.81 knots Max Flood
Wed -- 03:40 AM PDT     -0.01 knots Slack
Wed -- 05:49 AM PDT     Sunrise
Wed -- 06:58 AM PDT     -0.92 knots Max Ebb
Wed -- 10:26 AM PDT     0.01 knots Slack
Wed -- 11:00 AM PDT     Moonrise
Wed -- 01:50 PM PDT     1.14 knots Max Flood
Wed -- 05:10 PM PDT     -0.00 knots Slack
Wed -- 07:43 PM PDT     -0.55 knots Max Ebb
Wed -- 08:34 PM PDT     Sunset
Wed -- 10:57 PM PDT     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.70.80.70.3-0.1-0.5-0.8-0.9-0.8-0.5-0.20.30.81.11.110.60.1-0.3-0.5-0.5-0.4-0.30

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 (13,3,4,5)
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Ground Weather Radar Station San Francisco Bay Area, CA
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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.