Wednesday, May24, 2017 L-36.com


Marine Weather and Tides
Emeryville, 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 5:50AMSunset 8:21PM Tuesday May 23, 2017 9:11 PM PDT (04:11 UTC) Moonrise 3:38AMMoonset 4:59PM Illumination 2% Phase: Waning Crescent; Moon at 28 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
    EDIT      (on/off)   Help
PZZ530 San Pablo Bay Suisun Bay The West Delta And San Francisco Bay North Of The Bay Bridge- 843 Pm Pdt Tue May 23 2017
.small craft advisory in effect until 9 pm pdt this evening...
.small craft advisory in effect from Wednesday morning through Wednesday evening...
Tonight..SW winds 15 to 25 kt...decreasing to 10 to 20 kt by midnight. Patchy fog after midnight.
Wed..SW winds 15 to 25 kt. Patchy fog in the morning.
Wed night..SW winds 15 to 25 kt...decreasing to 5 to 15 kt after midnight. Patchy fog after midnight.
Thu..SW winds 10 to 20 kt. Patchy fog in the morning.
Thu night..SW winds 10 to 20 kt.
Fri..SW winds 5 to 15 kt.
Sat..SW winds 5 to 15 kt.
Sun..SW winds 10 kt.
PZZ500 843 Pm Pdt Tue May 23 2017
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Surface high pressure will be located over the central coast tonight through Wednesday resulting in mainly light west to southwesterly winds over much of the coastal waters with exception of the far northwestern coastal waters where winds will still be northerly. Winds are forecast to weaken late this week.

7 Day Forecast for Marine Location Near Emeryville, CA
   Hourly   EDIT   Help
location: 37.85, -122.29     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus66 kmtr 240322
afdmtr
area forecast discussion
national weather service san francisco bay area
822 pm pdt Tue may 23 2017

Synopsis An inland cooling trend will continue through late week
as high pressure weakens and the marine influence increases. Minor
warming is then expected during the upcoming weekend as high
pressure returns to the west coast.

Discussion As of 08:20 pm pdt Tuesday... Only minor adjustments
made to sky cover based on current trends. As of 7:50 pm pdt,
visible satellite showed an extensive area of low clouds off the
coast and impacting parts of the bay area with the clouds
intruding through the golden gate east to berkeley. Fort ord
profiler shows the marine layer around 1,500 ft this evening.

Tuesday was another warm day for inland locations with highs ranging
from the 80s to low 90s. Don't expect to see any 90s tomorrow as
the ridge responsible for bringing the well above normal
temperatures continues to push east into the continent. Most
inland locations can expect to see temperatures about 5 to 10
degrees cooler on Wednesday. Additional cooling will occur from
Wednesday to Thursday as an upper level low centered over
southwestern canada allows for 500 mb heights to continue to fall
over the region. High temperatures by Thursday will fall to the
upper 60s to mid 70s across the east bay and south bay, as well as
the salinas valley. Coastal locations can expect widespread
middle 50s to middle 60s with marine stratus.

Models suggest another ridge to build over the west coast in time
for the holiday weekend, though at this point it doesn't look that
it'll be as warm as it was over the past few days. Temperatures
should be at or within several degrees of climatological normals
for the end of may.

Prev discussion As of 01:32 pm pdt Tuesday... Low clouds continue to
hug the coast this afternoon with mostly sunny skies inland. With
this, the warmest temperatures persist over inland areas while
cooler temperatures (generally in the upper 50s to lower 60s) are
common at the coast. This trend will likely persist into tomorrow,
with low clouds spreading inland this evening and into the
overnight hours with a marine layer of around 1500 feet in place.

However, as the ridge aloft weakens and onshore flow increases,
inland locations will see the gradual cooling trend continue into
Wednesday. With the deepening marine layer, cannot rule out patchy
coastal drizzle mist during the late night and early morning.

However, measurable precipitation is highly unlikely.

Further cooling is expected late in the week as the ridge flattens
and an upper level low drops down into the northern rockies. With
this and an increase marine influence, looks for temperatures to
fall below seasonal averages for just about all inland locations.

More widespread 60s and 70s will be likely during the afternoon hours
beginning on Thursday and continuing through Saturday.

By late in the weekend and into early next week, a ridge of high
pressure is currently forecast to rebuild over the west coast. This
would likely result in a slight warming trend with afternoon
temperatures back to near seasonal averages. In addition, look for
mostly sunny afternoon conditions inland while coastal clouds will
be possible.

Aviation As of 5:17 pm pdt Tuesday... The marine layer is
deepening with a decent onshore push of stratus and fog expected
this evening into Wednesday morning. Timing stratus CIGS will be
challenging due to a southerly component to the wind over the
inner coastal waters this evening. Additionally a lower level
cyclonic circulation over the offshore waters advances eastward
reaching the coastal waters just west of the bay area Wednesday.

Ongoing area-wide surface to lower level cooling thus expected to
couple with a strengthening southerly gradient (smx-sfo presently
1.7 mb) and a southerly wind component will likely become more of
an influence on the marine layer from later tonight into Wednesday.

Surface pressures will generally be highest over the central coast
and lowest over far northern california through Wednesday favoring
a continuation of the smx-sfo gradient nearing 4 mb tonight and
Wednesday per latest NAM model output.

Vicinity of ksfo... Low to moderate confidenceVFR holds this evening
which is highly dependent on wind direction and strength as well as
the marine layer depth; presently san carlos sodar shows it's near
1,000 feet deep. As long as the marine layer depth holds and the
wind does not become more due westerlyVFR should hold for a while
longer this evening. Ifr is forecast, but not til much later tonight
with general trend toward MVFR cig early Wednesday morning. Gusty
w-sw winds likely Wednesday late morning and afternoon.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals... MVFR CIGS trending to ifr this evening
the possibly back to MVFR CIGS late tonight and Wednesday morning.

Low confidenceVFR redevelops by afternoon Wednesday.

Marine As of 4:42 pm pdt Tuesday... Light winds will to continue
tonight across the waters. Split flow tomorrow expected with
increasing northerly winds over the northern outer waters and
increasing southerly winds along the coast. Winds are forecast to
weaken late this week.

Mtr watches warnings advisories
Tngt Sca... Pt arena to pigeon pt 10-60 nm from 9 pm
sca... Sf bay until 9 pm
public forecast: rowe rgass
aviation: canepa
marine: anna
visit us at

Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
OBXC1 4 mi42 min 54°F 52°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 4 mi42 min W 7 G 9.9 55°F 1013.5 hPa
LNDC1 4 mi42 min NNW 6 G 7 56°F 1013.6 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 4 mi42 min W 5.1 G 7
AAMC1 - 9414750 - Alameda, CA 5 mi42 min WNW 6 G 8.9 55°F 66°F1014 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 6 mi42 min SSW 7 G 13 56°F 1013.5 hPa
PXOC1 - 9414311 - San Francisco (Pier 1), CA 7 mi42 min WSW 6 G 12 54°F 1012.3 hPa
PXSC1 7 mi42 min 54°F 52°F
RCMC1 - 9414863 - Richmond, CA 8 mi42 min SW 5.1 G 9.9 57°F 61°F1013 hPa
TIBC1 - Tiburon Pier, San Francisco Bay, CA 9 mi45 min NW 5.1 54°F 1013 hPa
FTPC1 - 9414290 - San Francisco, CA 10 mi42 min WSW 2.9 G 7 53°F 55°F1013.9 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 14 mi42 min WSW 12 G 15 57°F 1012.6 hPa
MZXC1 - 9415102 - Martinez-Amorco CA 15 mi42 min WNW 14 G 18 62°F 67°F1012.1 hPa54°F
UPBC1 16 mi42 min WNW 17 G 19
46237 - San Francisco Bar, CA (142) 19 mi42 min 55°F4 ft
PCOC1 - 9415144 - Port Chicago, CA 19 mi42 min W 13 G 16 63°F 67°F1011.8 hPa
RTYC1 - 9414523 - Redwood City, CA 24 mi42 min NNW 12 G 14 58°F 71°F1012.7 hPa
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 25 mi42 min NW 14 G 19 66°F 1010.7 hPa
SFXC1 - San Francisco Bay Reserve, CA 28 mi87 min WNW 19 65°F 1011 hPa55°F
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 30 mi82 min WSW 3.9 G 5.8 53°F 55°F4 ft1014.2 hPa (-1.2)
PRYC1 - 9415020 - Point Reyes, CA 38 mi42 min W 1.9 G 2.9 55°F 55°F1013.9 hPa
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA 46 mi82 min Calm G 1.9 54°F 55°F5 ft1013.7 hPa (-1.3)

Wind History for Oakland Middle Harbor, CA
(wind in knots)    EDIT      (on/off)   Help
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
Last
24hr
W7
W8
G11
SW2
W4
SW7
NW4
NW4
NW5
G8
W3
N1
W2
NW4
W1
W3
NW4
W3
W8
W12
G16
W9
G13
W8
W11
W12
G17
W14
G17
W5
G10
1 day
ago
W9
--
W6
W6
W6
--
W4
G7
W2
W4
W1
W2
S2
SW1
W2
W4
NW7
W8
W10
W9
W9
W7
W11
W10
G13
W10
2 days
ago
SW3
S3
W7
SW5
W3
W2
W1
NW3
N2
NW4
N1
NW1
W4
NW4
NW2
NW4
NW4
W8
W8
W8
W11
W8
G12
W7
W9
G12

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Oakland, Metro Oakland International Airport, CA11 mi19 minNW 910.00 miA Few Clouds57°F52°F83%1013.4 hPa
San Francisco, San Francisco International Airport, CA16 mi16 minWNW 1510.00 miA Few Clouds55°F50°F83%1013.1 hPa
Concord, Buchanan Field, CA16 mi19 minW 810.00 miFair69°F48°F49%1010.4 hPa
Hayward, Hayward Air Terminal, CA16 mi18 minNNW 710.00 miFair59°F48°F67%1014.1 hPa
San Carlos Airport, CA22 mi25 minN 610.00 miA Few Clouds59°F53°F82%1013.5 hPa

Wind History from OAK (wind in knots)
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
Last 24hrNW6NW8NW6NW7NW7NW5NW6NW6NW4NW4W5W4NW10W9NW8W11W16NW16W14NW18W17
G21
W17NW12NW9
1 day agoNW9W9NW7NW6NW9NW5NW3NW6NW5NW4W6NW6W5SW5W5NW9W13W14NW12NW14NW12NW13NW10NW9
2 days agoW7NW8NW6CalmNW8NW5NW4CalmN3CalmNW6W6NW8W8NW8NW10W12W15W15NW11NW14NW11NW11NW10

Tide / Current Tables for Berkeley, San Francisco Bay, California
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Berkeley
Click for Map
Wed -- 05:19 AM PDT     Moonrise
Wed -- 05:37 AM PDT     -0.83 feet Low Tide
Wed -- 05:52 AM PDT     Sunrise
Wed -- 12:11 PM PDT     4.87 feet High Tide
Wed -- 05:25 PM PDT     1.45 feet Low Tide
Wed -- 07:10 PM PDT     Moonset
Wed -- 08:20 PM PDT     Sunset
Wed -- 11:32 PM PDT     6.65 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
5.94.83.21.50.1-0.7-0.8-0.20.92.23.44.44.94.74321.51.62.33.44.75.86.5

Tide / Current Tables for Berkeley Yacht Harbor, California Current
   EDIT      (on/off)   Help   One Week of Data
Berkeley Yacht Harbor
Click for Map
Wed -- 02:29 AM PDT     -0.36 knots Max Ebb
Wed -- 05:19 AM PDT     Moonrise
Wed -- 05:52 AM PDT     Sunrise
Wed -- 05:53 AM PDT     0.00 knots Slack
Wed -- 09:12 AM PDT     0.41 knots Max Flood
Wed -- 12:53 PM PDT     -0.00 knots Slack
Wed -- 02:59 PM PDT     -0.21 knots Max Ebb
Wed -- 05:44 PM PDT     0.00 knots Slack
Wed -- 07:10 PM PDT     Moonset
Wed -- 08:20 PM PDT     Sunset
Wed -- 09:06 PM PDT     0.36 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.1-0.2-0.3-0.3-0.3-0.100.20.30.40.40.30.2-0-0.2-0.2-0.2-0.100.20.30.40.30.2

Weather Map and Satellite Images
       (on/off)   Help
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 (0,6,7,8)
      (on/off)   Help

Ground Weather Radar Station San Francisco Bay Area, CA
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

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.