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 5:21 AM PDT (12:21 UTC) Moonrise 10:00AMMoonset 11:15PM Illumination 20% Phase: Waxing Crescent; Moon at 4 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- 157 Am Pdt Wed Jun 28 2017
.small craft advisory in effect from 11 am pdt this morning through this evening...
Today..SW winds 5 to 15 kt...increasing to 15 to 25 kt in the afternoon. Patchy fog in the morning.
Tonight..W to sw winds 15 to 25 kt...decreasing to 5 to 15 kt overnight. Patchy fog after midnight.
Thu..SW winds 5 to 15 kt...increasing to 15 to 25 kt in the afternoon. Patchy fog in the morning.
Thu night..SW winds 15 to 25 kt. Patchy fog after midnight.
Fri..SW winds 10 to 20 kt. Patchy fog.
Sat..SW winds 5 to 15 kt. Patchy fog.
Sun..SW winds 5 kt...increasing to 5 to 15 kt. Patchy fog.
PZZ500 157 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... 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.

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 281143
afdmtr
area forecast discussion
national weather service san francisco bay area
443 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 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 2:13 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... Sf bay from 11 am
public forecast: canepa
aviation: mm
marine: mm
visit us at

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
AAMC1 - 9414750 - Alameda, CA 9 mi52 min SW 8.9 G 12 56°F 67°F1013.6 hPa
LNDC1 10 mi52 min SW 6 G 8.9 57°F 1013.1 hPa
RTYC1 - 9414523 - Redwood City, CA 12 mi52 min W 5.1 G 6 57°F 72°F1012.7 hPa
OBXC1 12 mi52 min 56°F 55°F
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 12 mi52 min SW 8.9 G 12
OKXC1 - 9414776 - Oakland (Berth 34), CA 13 mi52 min SSW 7 G 8.9 56°F 1013 hPa
PXOC1 - 9414311 - San Francisco (Pier 1), CA 14 mi52 min NE 1.9 G 4.1 56°F 1011.9 hPa
PXSC1 15 mi52 min 56°F 54°F
FTPC1 - 9414290 - San Francisco, CA 18 mi52 min SSW 4.1 G 13 55°F 58°F1013.1 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 19 mi52 min S 13 G 17 56°F 1012.9 hPa
TIBC1 - Tiburon Pier, San Francisco Bay, CA 21 mi55 min SSW 4.1 54°F 1013 hPa
RCMC1 - 9414863 - Richmond, CA 21 mi52 min SSW 6 G 8 57°F 62°F1012.4 hPa
MZXC1 - 9415102 - Martinez-Amorco CA 25 mi52 min W 7 G 8 57°F 69°F1012.3 hPa56°F
UPBC1 25 mi52 min W 7 G 9.9
46237 - San Francisco Bar, CA (142) 26 mi52 min 57°F4 ft
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 26 mi52 min WSW 14 G 18 57°F 1011.8 hPa
PCOC1 - 9415144 - Port Chicago, CA 27 mi52 min SW 9.9 G 12 56°F 70°F1011.7 hPa
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 29 mi52 min WNW 8.9 G 13 60°F 1010.7 hPa
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 36 mi92 min NW 16 G 19 56°F 57°F6 ft1012.7 hPa (-1.0)
SFXC1 - San Francisco Bay Reserve, CA 37 mi97 min W 8.9 56°F 1011 hPa55°F
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA 44 mi92 min WNW 14 G 18 56°F 56°F6 ft1013.2 hPa (-0.7)
PRYC1 - 9415020 - Point Reyes, CA 48 mi52 min WNW 8.9 G 14 58°F 55°F1012.2 hPa

Wind History for Alameda, CA
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Oakland, Metro Oakland International Airport, CA3 mi29 minWSW 910.00 miOvercast59°F54°F83%1013.3 hPa
Hayward, Hayward Air Terminal, CA3 mi28 minW 610.00 miOvercast59°F50°F72%1014.1 hPa
San Francisco, San Francisco International Airport, CA11 mi26 minW 1210.00 miOvercast57°F51°F81%1013.2 hPa
San Carlos Airport, CA11 mi47 minWNW 610.00 miA Few Clouds57°F51°F82%1013.5 hPa
Mountain View, Moffett Field, CA18 mi26 minN 010.00 miOvercast59°F53°F81%1013.7 hPa
Livermore, Livermore Municipal Airport, CA19 mi29 minSW 410.00 miPartly Cloudy56°F51°F84%1012.5 hPa
Half Moon Bay Airport, CA21 mi27 minWNW 57.00 miOvercast55°F53°F94%1013.9 hPa
Concord, Buchanan Field, CA22 mi29 minSSW 1110.00 miFair57°F52°F83%1010.8 hPa

Wind History from OAK (wind in knots)
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Last 24hrW15W12W12W10W9W11W11W12W14W15W14W16W16W17W15W17W11W13W13W9W6SW8SW11SW9
1 day agoW8W7W5W7W9W11W12W13W16W15W15W18W18W18W18W17W17W15W12W15W16W13W12W16
2 days agoW7W10W10W8W9W12W9W14W14W15W14W15W15W18
G24
W14W16W9W9W11W12W12W9W10W8

Tide / Current Tables for Roberts Landing, 1.3 miles west of, San Francisco Bay, California
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
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 (8,2,3,4)
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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.