Thursday, August17, 2017 L-36.com


Marine Weather and Tides
Brisbane, 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 6:26AMSunset 7:59PM Thursday August 17, 2017 6:03 PM PDT (01:03 UTC) Moonrise 1:07AMMoonset 3:45PM Illumination 19% Phase: Waning Crescent; Moon at 25 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- 233 Pm Pdt Thu Aug 17 2017
.small craft advisory in effect until 9 pm pdt this evening...
Tonight..SW winds 15 to 25 kt in the evening decreasing to 10 to 20 kt before midnight.
Fri..SW winds 10 to 20 kt.
Fri night..SW winds 10 to 20 kt.
Sat..SW winds 10 to 20 kt.
Sat night..SW winds 10 to 20 kt. Patchy fog after midnight.
Sun..SW winds 10 to 20 kt.
Mon..SW winds 5 to 15 kt.
Tue..SW winds 5 to 15 kt.
PZZ500 233 Pm Pdt Thu Aug 17 2017
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Winds will be generally light and variable over the coastal waters this evening and overnight. Locally breezy conditions are possible through the evening near the golden gate gap and angel island. Expect increasing northwest winds beginning late Friday and lasting through the weekend as the ridge strengthens further.

7 Day Forecast for Marine Location Near Brisbane, CA
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location: 37.67, -122.38     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 172336
afdmtr
area forecast discussion
national weather service san francisco bay area
436 pm pdt Thu aug 17 2017

Synopsis A gradual warming trend is forecast to continue
through late week as high pressure builds over the region. With
this, overnight and morning clouds can be expected as well,
especially along the coast and nearby valley locations. A cooling
trend is then expected late in the weekend into early next week as
an upper level trough impacts the region.

Discussion As of 12:57 pm pdt Thursday... Low clouds across the
region have mostly retreated to the pacific early this afternoon
with the exception of the north bay coastline and across the
western portion of san francisco. Meanwhile, profiler data
continues to show the marine layer holding on strong at around
1,800-2,000 feet in depth. Above the marine inversion, warmer
temperatures are also noted and have translated to warmer
temperatures in the hills and inland valleys. This trend is likely
to persist through late week as a ridge of high pressure builds
in from the eastern pacific. With the presence of the marine
layer, low clouds will again return to the coast tonight and
spread locally inland into the valleys. Similar to today, these
clouds will burn-off through midmorning and give way to mostly
sunny skies in the afternoon for most locations both on Thursday
and Friday. Overall, temperatures will be near seasonal averages
with 60s to 70s at the coast and 80s to 90s inland.

The aforementioned ridge of high pressure will shift westward out
further into the pacific this upcoming weekend and be replaced by a
mid upper level trough. The latest model run of the GFS continues to
maintain near average temperatures on Saturday before showing a
cooling trend spreading inland Sunday. Meanwhile, the NAM and ecmwf
both show the cooling trend to begin on Saturday and spreading
inland into early next week. Regardless, temperatures are forecast
to cool slightly below seasonal averages early next week. The
challenging part of the forecast will be how much this mid upper
level trough and associated low that is forecast to develop will
impact the marine layer. Depending on the exact set up, the marine
layer may mix out early in the week and result in earlier than
normal burn-off time of low clouds. Overall, dry weather conditions
are also forecast to persist through the middle of next week.

Aviation As of 4:30 pm pdt Thursday... Marine layer cointinues
to compress as an upper level ridge builds off the coast. Onshore
flow is more northwesterly today and this usually keeps stratus
out of the sfo bay area until well after the airport evening rush.

Vicinity of ksfo... MVFR after 10z.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals... Stratus has cleared farther off the coast
compared to yesterday so CIGS will be later to return. Ifr cigs
after 05z.

Marine As of 4:35 pm pdt Thursday... Winds will be generally
light and variable over the coastal waters this evening and
overnight. Locally breezy conditions are possible through the
evening near the golden gate gap and angel island. Expect
increasing northwest winds beginning late Friday and lasting
through the weekend as the ridge strengthens further.

Mtr watches warnings advisories
Tday Sca... Sf bay
public forecast: rgass
aviation: W pi
marine: rowe
visit us at

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
AAMC1 - 9414750 - Alameda, CA 8 mi46 min WNW 8.9 G 12 66°F 69°F1015.5 hPa
PXOC1 - 9414311 - San Francisco (Pier 1), CA 9 mi46 min SW 9.9 G 15 65°F 1014 hPa
PXSC1 9 mi46 min 66°F 58°F
OBXC1 9 mi46 min 65°F 59°F
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 9 mi46 min W 8 G 11
OKXC1 - 9414776 - Oakland (Berth 34), CA 10 mi46 min W 9.9 G 14 65°F 1015 hPa
FTPC1 - 9414290 - San Francisco, CA 10 mi46 min W 8.9 G 15 62°F 62°F1015.4 hPa
LNDC1 10 mi46 min W 6 G 8 67°F 1015 hPa
RTYC1 - 9414523 - Redwood City, CA 14 mi46 min N 11 G 15 70°F 73°F1013.7 hPa
46237 - San Francisco Bar, CA (142) 16 mi94 min 61°F4 ft
TIBC1 - Tiburon Pier, San Francisco Bay, CA 16 mi57 min SW 12 67°F 1015 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 16 mi46 min S 4.1 G 7 68°F 1015.1 hPa
RCMC1 - 9414863 - Richmond, CA 18 mi52 min S 2.9 G 8 69°F 64°F1014.5 hPa
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 25 mi74 min W 3.9 G 7.8 61°F 62°F4 ft1016.1 hPa (-1.2)
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 27 mi46 min SW 14 G 15 71°F 1013.5 hPa
MZXC1 - 9415102 - Martinez-Amorco CA 29 mi46 min WSW 13 G 15 75°F 71°F1013.6 hPa58°F
PCOC1 - 9415144 - Port Chicago, CA 32 mi46 min WSW 14 G 20 77°F 71°F1013 hPa
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA 34 mi74 min SSW 1.9 G 3.9 62°F 62°F7 ft1015.5 hPa (-1.2)
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 37 mi46 min NW 17 G 21 78°F 1012.1 hPa
PRYC1 - 9415020 - Point Reyes, CA 39 mi46 min S 2.9 G 6 64°F 59°F1015.4 hPa
SFXC1 - San Francisco Bay Reserve, CA 41 mi79 min WNW 15 80°F 1012 hPa60°F

Wind History for Alameda, CA
(wind in knots)    EDIT      (on/off)   Help
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Last
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W7
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W5
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G9
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1 day
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W7
G14
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G12
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G11
W6
G10
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G11
W4
G7
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W5
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G10
W7
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G13
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G13
SW7
G11
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G12
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W11
G16
W7
G11
W8
G15
W8
G13
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G11

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
San Francisco, San Francisco International Airport, CA4 mi68 minWNW 2010.00 miA Few Clouds and Breezy70°F55°F59%1014.4 hPa
Oakland, Metro Oakland International Airport, CA9 mi71 minWNW 1610.00 miFair69°F57°F68%1014.8 hPa
San Carlos Airport, CA12 mi77 minNNW 910.00 miClear77°F57°F51%1014.6 hPa
Half Moon Bay Airport, CA13 mi69 minSW 59.00 miFair64°F0°F%1015.2 hPa
Hayward, Hayward Air Terminal, CA14 mi70 minWNW 1410.00 miA Few Clouds73°F54°F51%1015.3 hPa
Palo Alto Airport, CA19 mi77 minNNW 1110.00 miClear75°F64°F69%1014.6 hPa
Mountain View, Moffett Field, CA24 mi68 minNNW 1110.00 miFair74°F61°F64%1014.8 hPa

Wind History from SFO (wind in knots)
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Last 24hrNW13NW14NW10W9NW7NW5NW6NW4W4W5S3W4CalmCalmNW4NW4NW6N5N8NW14NW15NW16NW18W20
1 day agoW17
G24
W15W13W11SW6SW11W11SW66S4S4CalmCalmSE3SE3CalmSE7N6N8N86NW13
G19
W13NW14
2 days agoW12W11
G20
W10W12W12W11SW10SW9W10SW8SW7SW9SW7S5S7SW8SW15SW11SW16SW14
G24
W17SW16
G24
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W17

Tide / Current Tables for Oyster Point Marina, San Francisco Bay, California
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Oyster Point Marina
Click for Map
Thu -- 02:07 AM PDT     Moonrise
Thu -- 03:35 AM PDT     0.16 feet Low Tide
Thu -- 06:27 AM PDT     Sunrise
Thu -- 10:15 AM PDT     5.58 feet High Tide
Thu -- 03:11 PM PDT     2.71 feet Low Tide
Thu -- 04:44 PM PDT     Moonset
Thu -- 07:59 PM PDT     Sunset
Thu -- 09:18 PM PDT     7.67 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.420.90.30.20.71.72.94.15.15.65.44.73.83.12.72.93.74.96.17.17.67.56.6

Tide / Current Tables for Sierra Point 1.3 mi ENE, South San Francisco Bay, California Current
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Sierra Point 1.3 mi ENE
Click for Map
Thu -- 02:07 AM PDT     Moonrise
Thu -- 03:37 AM PDT     0.01 knots Slack
Thu -- 06:27 AM PDT     Sunrise
Thu -- 06:51 AM PDT     0.95 knots Max Flood
Thu -- 10:11 AM PDT     -0.00 knots Slack
Thu -- 12:37 PM PDT     -0.61 knots Max Ebb
Thu -- 03:26 PM PDT     0.00 knots Slack
Thu -- 04:44 PM PDT     Moonset
Thu -- 06:30 PM PDT     0.78 knots Max Flood
Thu -- 07:59 PM PDT     Sunset
Thu -- 09:28 PM PDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-1.3-1.1-0.8-0.40.20.60.910.80.60.1-0.3-0.6-0.6-0.4-0.20.20.50.80.80.60.2-0.3-0.8

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 (21,6,7,8)
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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.