Friday, August18, 2017 L-36.com


Marine Weather and Tides
Emeryville, 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 7:58PM Friday August 18, 2017 2:50 PM PDT (21:50 UTC) Moonrise 2:04AMMoonset 4:43PM Illumination 12% Phase: Waning Crescent; Moon at 26 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- 228 Pm Pdt Fri Aug 18 2017
.small craft advisory in effect from Saturday morning through late Saturday night...
Tonight..SW winds 10 to 20 kt.
Sat..SW winds 15 to 25 kt.
Sat night..SW winds 15 to 25 kt. Patchy fog after midnight.
Sun..SW winds 10 to 20 kt. Patchy fog in the morning.
Sun night..SW winds 10 to 20 kt. Patchy fog after midnight.
Mon..SW winds 5 to 15 kt.
Tue..SW winds 10 kt.
Wed..SW winds 10 kt.
PZZ500 228 Pm Pdt Fri Aug 18 2017
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Increasing northwesterly winds will continue through the weekend, particularly for the northern outer waters, as high pressure builds over the eastern pacific. Locally steep wind waves will also accompany increasing winds.

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


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 182047
afdmtr
area forecast discussion
national weather service san francisco bay area
147 pm pdt Fri aug 18 2017

Synopsis Look for one more day of minor warming this afternoon
as a ridge of high pressure continues to build into our region.

Minor cooling can be expected over the weekend into next week as
an upper level low and shortwave trough move into our region.

Overnight clouds can be expected especially along the coast.

Discussion As of 1:47 pm pdt Friday... This morning's low
clouds were quick to clear for most locations as we transition to
a mostly clear afternoon. A few areas along the monterey bay
shoreline and coastal areas from san francisco northward still
have some lingering clouds. Synoptically-speaking, there is an
upper level ridge centered near 38n 135w that has gradually
strengthened over the past 24 hours. This strengthening is
expected to correspond with several degrees of warming at the
surface for inland areas. When all is set and done this Friday
afternoon, expect highs to reach the 60s and 70s along the coast
and 80s and 90s for the interior. This equates to temperatures
near middle august climatological normals along the coast, and
about 2 to 7 degrees above normal for the interior. Can't rule out
the chance that a few areas near pinnacles national park surpass
the century mark.

Over the weekend an upper level low will develop just off the
coast of point conception. This will allow for heights and
thickness values over central and northern california to
decrease. We'll see afternoon temperatures across the interior
trend downward several degrees per day through the weekend.

The main thought on many minds as we head into next week is the
cloud cover for Monday morning's solar eclipse. If conditions
permit, the partial solar eclipse can be viewed throughout
california. Right now, models are all in good agreement that the
upper level low will remain parked near point conception in
southern california. For us along the central coast and north to
the san francisco bay area, this yields a few outcomes. For one,
the low can help mix out the marine layer, resulting in mostly
clear conditions. On the other hand, the upper low could help to
enhance the marine layer depth. We'll know a little bit more over
the weekend and will continue to monitor the marine layer's
response to the trough. Climatologically, the best locations in
the bay area for clear skies on a mid late august morning would be
interior areas of the east bay away from the coast, as well as the
higher elevations in the santa cruz mountains, north bay
mountains, and diablo range. The eclipse of the Sun will begin
shortly after 9:00 am pdt for the bay area with peak obscuration
happening around 10:15 am pdt. Peak obscuration of the Sun will
range from 71 percent in monterey and up to 78 percent in santa
rosa.

Aviation As of 10:30 am pdt Friday... For 18z tafs. Stratus has
begun to burn off retreat back to the coast across most TAF sites.

ExpectingVFR conditions through the afternoon before the return
of low CIGS late tonight early tomorrow morning. Some uncertainty
in the extend of stratus coverage for tomorrow morning.

Vicinity of ksfo...VFR currently with westerly winds increasing
this afternoon to around 15 kt. Expecting stratus to return late
tonight with slightly lower CIGS than what we saw today.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals... CIGS have retreated for ksns bringingVFR
conditions. Expecting return of low CIGS this evening. Stratus
still hovering around the edge of kmry. Possible the stratus will
clear out this afternoon although confidence is low, may bounce
betweenVFR and MVFR before the deck returns tonight.

Marine As of 01:30 pm pdt Friday... Expect increasing
northwesterly winds to continue through the weekend as high
pressure builds over the eastern pacific. Locally steep wind waves
will also accompany the increasing winds.

Mtr watches warnings advisories
Tngt Sca... Pt arena to pigeon pt 10-60 nm from 6 pm
public forecast: rowe
aviation: as
marine: as
visit us at

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
OBXC1 4 mi51 min 64°F 58°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 4 mi51 min W 9.9 G 12 64°F 1015.3 hPa (-1.0)
LNDC1 4 mi51 min W 8 G 9.9 65°F 1015.3 hPa (-0.9)
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 4 mi51 min W 8.9 G 11
AAMC1 - 9414750 - Alameda, CA 5 mi51 min WNW 7 G 8.9 66°F 68°F1015.8 hPa (-0.9)
PPXC1 - 9414847 - Richmond (Point Potrero), CA 6 mi51 min SSW 9.9 G 15 64°F 1015.4 hPa (-1.2)
PXOC1 - 9414311 - San Francisco (Pier 1), CA 7 mi51 min W 13 G 18 64°F 1014.4 hPa (-0.8)
PXSC1 7 mi51 min 65°F 58°F
RCMC1 - 9414863 - Richmond, CA 8 mi51 min S 5.1 G 7 66°F 64°F1014.9 hPa (-1.2)
TIBC1 - Tiburon Pier, San Francisco Bay, CA 9 mi64 min W 8 66°F 1015 hPa
FTPC1 - 9414290 - San Francisco, CA 10 mi51 min W 8.9 G 15 61°F 61°F1015.8 hPa (-1.0)
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 14 mi51 min WSW 8.9 G 12 68°F 1014.2 hPa (-1.5)
MZXC1 - 9415102 - Martinez-Amorco CA 15 mi51 min WNW 18 G 19 73°F 69°F1013.9 hPa (-1.7)60°F
PCOC1 - 9415144 - Port Chicago, CA 19 mi51 min W 16 G 19 72°F 70°F1013.5 hPa (-1.6)
46237 - San Francisco Bar, CA (142) 19 mi51 min 60°F4 ft
RTYC1 - 9414523 - Redwood City, CA 24 mi51 min NNW 12 G 15 67°F 73°F1014.5 hPa (-0.8)
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 25 mi51 min NW 14 G 18 74°F 1012.9 hPa (-1.5)
SFXC1 - San Francisco Bay Reserve, CA 28 mi126 min WNW 8 76°F 1014 hPa62°F
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 30 mi61 min SW 3.9 G 5.8 59°F 59°F4 ft1016.3 hPa (-0.6)
PRYC1 - 9415020 - Point Reyes, CA 38 mi51 min SSE 1 G 4.1 63°F 61°F1015.7 hPa (-0.5)
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA 46 mi61 min SW 5.8 G 5.8 60°F 62°F6 ft1015.8 hPa (-0.5)

Wind History for Oakland Middle Harbor, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Oakland, Metro Oakland International Airport, CA11 mi58 minWNW 1510.00 miFair70°F59°F68%1015.1 hPa
San Francisco, San Francisco International Airport, CA16 mi55 minWNW 1610.00 miA Few Clouds71°F55°F59%1014.6 hPa
Concord, Buchanan Field, CA16 mi58 minNW 1110.00 miFair83°F57°F43%1012.1 hPa
Hayward, Hayward Air Terminal, CA16 mi57 minWNW 158.00 miFair73°F55°F55%1015.7 hPa
San Carlos Airport, CA22 mi64 minN 107.00 miClear with Haze72°F59°F65%1015.2 hPa

Wind History from OAK (wind in knots)
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Last 24hrNW11NW14W16NW16NW12W13W12W10W10W10W9NW7NW7W9W8W7W6W5W4S4CalmW7NW12W15
1 day agoW12NW12NW14NW13NW13NW13NW11NW8W8NW4N4N3N6N6N4N3CalmN5NW3W4NW8W10W13NW10
2 days agoW9W14W10W12W13W11W13W6W5W9W10SW7SW5S6S3S3CalmS4S7S8S5S4NW7NW9

Tide / Current Tables for Berkeley, San Francisco Bay, California
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Berkeley
Click for Map
Fri -- 03:04 AM PDT     Moonrise
Fri -- 04:00 AM PDT     -0.34 feet Low Tide
Fri -- 06:27 AM PDT     Sunrise
Fri -- 10:52 AM PDT     4.94 feet High Tide
Fri -- 03:47 PM PDT     2.48 feet Low Tide
Fri -- 05:43 PM PDT     Moonset
Fri -- 07:57 PM PDT     Sunset
Fri -- 09:46 PM PDT     6.77 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.72.20.8-0.1-0.3-0.10.71.72.83.94.74.94.63.93.22.62.52.93.74.85.86.66.86.3

Tide / Current Tables for Berkeley Yacht Harbor, California Current
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Berkeley Yacht Harbor
Click for Map
Fri -- 12:33 AM PDT     -0.30 knots Max Ebb
Fri -- 03:04 AM PDT     Moonrise
Fri -- 04:14 AM PDT     0.00 knots Slack
Fri -- 06:27 AM PDT     Sunrise
Fri -- 07:46 AM PDT     0.35 knots Max Flood
Fri -- 11:28 AM PDT     -0.00 knots Slack
Fri -- 01:17 PM PDT     -0.11 knots Max Ebb
Fri -- 03:54 PM PDT     0.00 knots Slack
Fri -- 05:43 PM PDT     Moonset
Fri -- 07:23 PM PDT     0.30 knots Max Flood
Fri -- 07:57 PM PDT     Sunset
Fri -- 10:40 PM PDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.3-0.3-0.2-0.2-00.10.30.30.40.30.20.1-0.1-0.1-0.1-0.100.10.20.30.30.20.1-0.1

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 (17,4,5,8)
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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.