Thursday, June20, 2019 L-36.com


Marine Weather and Tides
Marin City, CA

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Sunrise 5:45AMSunset 8:37PM Wednesday June 19, 2019 10:08 PM PDT (05:08 UTC) Moonrise 9:46PMMoonset 6:52AM Illumination 93% Phase: Waning Gibbous; Moon at 17 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 The San Francisco Bay North Of The Bay Bridge- 845 Pm Pdt Wed Jun 19 2019
.small craft advisory in effect from Thursday afternoon through Thursday evening...
Tonight..SW winds 15 to 20 kt with gusts up to 25 kt.
Thu..SW winds 10 to 20 kt with gusts up to 30 kt.
Thu night..SW winds 10 to 15 kt.
Fri..SW winds 15 to 20 kt with gusts up to 25 kt.
Fri night..W winds 5 to 10 kt.
Sat..W winds 10 to 15 kt.
Sun..SW winds 10 to 15 kt.
PZZ500 845 Pm Pdt Wed Jun 19 2019
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Light southerly winds will persist along the coast south of point reyes through tomorrow as northerly winds increase across the northern outer waters tonight. Gale force gusts will be possible starting tonight over the outer waters north of point reyes through at least tomorrow night. Elevated winds will become more widespread, mainly over the outer waters, tomorrow through Friday. These winds will result in steep fresh swell creating hazardous seas conditions, especially for smaller vessels.


7 Day Forecast for Marine Location Near Marin City, CA
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location: 37.87, -122.5     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 200345
afdmtr
area forecast discussion
national weather service san francisco bay area
845 pm pdt Wed jun 19 2019

Synopsis Slightly cooler temperatures are expected once again
on Thursday. Winds shift to the north on Friday and Saturday which
will allow for slightly warmer temperatures leading into the
weekend. These northerly winds have the potential to be gusty
particularly in the north bay hills Friday and Saturday mornings.

Discussion As of 08:03 pm pdt Wednesday... The marine layer is
trickling into low lying valleys this evening as it compresses
down to a modest 1000ft agl. It will retreat once again to the
coastline tomorrow afternoon. The eastern pacific ridge is
expected to continue to erode as a trough descends from the
pacific northwest tomorrow and into Friday. The bay area will
remain on the west side of the trough which will keep skies mostly
clear, providing plenty of sunshine and drier conditions. This
trough will bring northerly winds that will be gusty, 30 mph or
more, particularly in higher elevations of the north bay on
Friday and Saturday morning. These downsloping winds will help
bring warmer temperatures to the bay area Friday and into the
weekend. Extended models are showing the return of onshore flow
and a deeper marine layer early next week which will in turn bring
cooler temperatures.

Prev discussion As of 1:48 pm pdt Wednesday... Satellite imagery
shows low clouds have mostly cleared to the coast across the
district. There is still some stratus around the monterey bay,
near half moon bay, over portions of san francisco, and along the
sonoma county coast. Current temperature readings are running
cooler than yesterday at this time with 60s to lower 80s being
reported at area airports. Locations in the southern interior have
warmed into the upper 80s and lower 90s. The marine layer has
increased to around 2000 feet as of noon, and the onshore surface
pressure gradient is a healthy 2.9 mb, so expect low clouds to
spread inland again overnight.

An upper level low dropping south from western canada into the
pacific northwest will aid in continued cooling over the next
couple of days. Thursday will be the coolest day as an upper level
disturbance moves south across nevada with the trough axis moving
through our district. This disturbance will tighten an offshore
surface pressure gradient with north to northeast winds increasing
Thursday night as this trough moves through. The latest run of
the nam12 model still shows 925 mb winds in the 25 to 35 kt
range... Strongest over the higher terrain in napa county. After
weakening during the day Friday the north to northeast winds will
ramp up once again Friday night, although weaker than Thursday
night. Currently there are no watches or advisories for the north
and east bay hills but will continue to monitor.

Longer range models indicate a long-wave upper trough over the
eastern pacific, with high pressure over the rocky mountain
states. This will maintain cool to near seasonally normal temps
next week.

Aviation As of 04:32 pm pdt Wednesday... For 00z tafs. The
marine layer remains at around 2000 ft agl per the fort ord
profiler. Satellite imagery shows stratus along the coast and
beginning to move inland. MVFR to ifr conditions forecast to
prevail for most sites by this evening with earlier return times
forecast for kmry and ksns. All TAF sites are expected to see MVFR
to ifr conditions by sunrise tomorrow. Low confidence on exact
timing of returns. Breezy onshore winds will continue this
afternoon at around 10-15 kt with higher gusts around the sf bay
area TAF sites. Winds will diminish overnight before onshore winds
increase once again tomorrow afternoon.

Vicinity of ksfo...VFR conditions this afternoon before stratus
moves in this evening. Low clouds may move in tonight earlier than
was observed yesterday evening. Low confidence on timing of return
and tomorrow's clearing. MVFR ifr CIGS to prevail overnight and
tomorrow morning. Onshore winds around 15 kt with gusts to around
20 kt will continue into the early evening before winds diminish
overnight.

Sfo bridge approach... Similar to sfo.

Monterey bay terminals... Thus far, it looks like similar
conditions as yesterday with satellite showing stratus beginning
to move inland towards ksns before eventually wrapping around to
kmry. MVFR to ifr conditions expected over the next few hours.

MVFR ifr CIGS overnight with lifr possible late tonight at kmry.

Right now looks like another late clearing for tomorrow with some
guidance showing low clouds sticking around all day.

Marine As of 02:46 pm pdt Wednesday... Light southerly winds
will continue along the coast south of point reyes through
Thursday, while gusty northerly winds increase over the northern
outer waters tonight. Winds will reach gale force at times in the
outer waters north of point reyes from this evening through at
least Thursday night. Gusty northerly winds will become more
widespread across the coastal waters Thursday through Friday. This
will result in steep fresh swell creating hazardous seas
conditions, particularly for smaller vessels.

Mtr watches warnings advisories
Tngt Sca... Pt arena to pigeon pt 10-60 nm until 9 pm
glw... Pt arena to pigeon pt 10-60 nm from 9 pm
sca... Pt arena to pt reyes 0-10 nm from 3 am
public forecast: dk
aviation: as
marine: as
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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
FTPC1 - 9414290 - San Francisco, CA 5 mi56 min WSW 8 G 13 57°F 59°F1013.4 hPa
RCMC1 - 9414863 - Richmond, CA 6 mi56 min SW 6 G 14 58°F 63°F1012.8 hPa
PXSC1 7 mi56 min 59°F 59°F
PXOC1 - 9414311 - San Francisco (Pier 1), CA 8 mi50 min W 5.1 G 13 58°F 1012 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 8 mi50 min SW 12 G 15 59°F 1013.1 hPa
46237 - San Francisco Bar, CA (142) 9 mi68 min 58°F4 ft
OBXC1 10 mi56 min 59°F 59°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 10 mi56 min W 7 G 8.9 58°F 1013.1 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 10 mi56 min WSW 12 G 15
AAMC1 - 9414750 - Alameda, CA 13 mi56 min W 8.9 G 13 59°F 67°F1013.5 hPa
LNDC1 13 mi56 min W 9.9 G 13 59°F 1013.1 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 18 mi50 min SW 17 G 21 59°F 1011.7 hPa
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 20 mi28 min SW 7.8 G 9.7 56°F 58°F1014.1 hPa
UPBC1 23 mi50 min W 20 G 25
MZXC1 - 9415102 - Martinez-Amorco CA 23 mi56 min WNW 12 G 16 60°F 68°F1011.7 hPa60°F
PRYC1 - 9415020 - Point Reyes, CA 27 mi56 min 58°F1013.3 hPa
PCOC1 - 9415144 - Port Chicago, CA 28 mi56 min SW 12 G 16 62°F 69°F1011.3 hPa
RTYC1 - 9414523 - Redwood City, CA 29 mi56 min NNW 7 G 8.9 62°F 74°F1013.2 hPa
SFXC1 - San Francisco Bay Reserve, CA 34 mi83 min W 9.9 64°F 1011 hPa56°F
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 35 mi56 min WNW 16 G 20 66°F 1010 hPa

Wind History for San Francisco, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Oakland, Metro Oakland International Airport, CA19 mi75 minWNW 1010.00 miMostly Cloudy61°F55°F81%1012.9 hPa
San Francisco, San Francisco International Airport, CA19 mi72 minWNW 910.00 miA Few Clouds60°F55°F84%1012.4 hPa
Novato / Gnoss Field, CA19 mi73 minNNW 710.00 miFair59°F55°F88%1012.5 hPa

Wind History from DVO (wind in knots)
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2 days agoN3CalmNW4CalmCalmCalmNW5CalmN5NW43N6CalmN6NE7N11
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Tide / Current Tables for Sausalito, Corps of Engineers Dock, San Francisco Bay, California
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Sausalito
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Thu -- 01:35 AM PDT     5.59 feet High Tide
Thu -- 05:47 AM PDT     Sunrise
Thu -- 08:41 AM PDT     -0.74 feet Low Tide
Thu -- 08:48 AM PDT     Moonset
Thu -- 04:03 PM PDT     4.56 feet High Tide
Thu -- 08:35 PM PDT     Sunset
Thu -- 08:49 PM PDT     3.08 feet Low Tide
Thu -- 11:24 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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55.55.55.14.12.71.20.1-0.6-0.7-0.30.51.62.73.64.34.64.443.53.23.13.33.8

Tide / Current Tables for Richardson Bay Entrance, San Francisco Bay, California Current
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Richardson Bay Entrance
Click for Map
Thu -- 03:45 AM PDT     -0.93 knots Max Ebb
Thu -- 05:47 AM PDT     Sunrise
Thu -- 06:57 AM PDT     0.01 knots Slack
Thu -- 08:47 AM PDT     Moonset
Thu -- 09:23 AM PDT     1.05 knots Max Flood
Thu -- 01:14 PM PDT     -0.00 knots Slack
Thu -- 04:23 PM PDT     -0.40 knots Max Ebb
Thu -- 06:52 PM PDT     0.00 knots Slack
Thu -- 08:35 PM PDT     Sunset
Thu -- 08:56 PM PDT     0.61 knots Max Flood
Thu -- 11:24 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.2-0.5-0.7-0.9-0.9-0.7-0.400.7110.90.50.1-0.2-0.3-0.4-0.4-0.20.10.40.60.50.3

Weather Map and Satellite Images
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GOES Local Image of CentralWestCoast    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
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Wind Forecast for San Francisco/Monterey Bay Area, CA (1,6,7,8)
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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.