Friday, June23, 2017 L-36.com


Marine Weather and Tides
Novato, 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 5:46AMSunset 8:38PM Friday June 23, 2017 1:44 PM PDT (20:44 UTC) Moonrise 4:36AMMoonset 7:18PM Illumination 0% Phase: New Moon; Moon at 29 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- 831 Am Pdt Fri Jun 23 2017
.small craft advisory in effect through this evening...
Today..SW winds 15 to 25 kt.
Tonight..SW winds 15 to 25 kt. Patchy fog after midnight.
Sat..SW winds 15 to 25 kt. Patchy fog in the morning.
Sat night..SW winds 15 to 25 kt.
Sun..SW winds 15 to 25 kt.
Mon..SW winds 10 to 20 kt.
Tue..SW winds 5 to 15 kt.
PZZ500 831 Am Pdt Fri Jun 23 2017
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Generally light southerly winds over the coastal waters today. Onshore winds will be breezy through the golden gate gap and across the northern san francisco bay. Northwest winds return this weekend. Generally decreasing seas through the coming days.

7 Day Forecast for Marine Location Near Novato, CA
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location: 38.1, -122.59     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 232034
afdmtr
area forecast discussion
national weather service san francisco bay area
134 pm pdt Fri jun 23 2017

Synopsis Cooling trend started today for most areas as onshore
flow returns. The far interior valleys will remain seasonably
warm through this evening. The overall trend this weekend and into
next week will be a return to more seasonable temperatures along
with more extensive night and morning low clouds followed by sunny
afternoons.

Discussion As of 01:28 pm pdt Friday... After a prolong period
of heat, the much talked about cool down began today. Afternoon 24
hour trends are still impressive with a solid 10 to 20 degree
drop from Thursday to Friday. Some of the biggest drops are:
santa rosa 17 degrees, livermore 15 degrees and oakland 15
degrees, los altos 19 degrees and spring valley 21 degrees.

However, despite the cool down still want to highlight the
cumulative effects of the prolonged heat combined with highs
exceeding 90 degrees impacting sensitive groups. Far interior
locations might be cooler than Thursday, but will likely end up in
the mid and upper 90s today. Therefore, a heat advisory remains in
effect through this evening for interior east bay, mountains of
monterey cty and interior san benito.

The cool down noticed today will continue through the weekend. No
heat advisories warnings will be needed. In fact, night and
morning low clouds will be common place as temperatures return to
near normal by next week.

One major change to the forecast was to include a slight chance
of thunderstorms over monterey san benito late tonight into
Saturday. Confidence is rather low, but if it verifies impacts
could be huge, especially from a fire weather perspective. For
several days now, models have been keying in on the
moisture convection near baja tracking north. Latest models do
bring the mid-upper level moisture (700-500mb) northward tonight
and early Saturday. In addition to the moisture advection, upper
level instability increases. Mu CAPE through the layer increases
with modified total totals greater than 30 all indicating upper
level lift. At this point only giving it a 15 pct chance of
occurring, but still wanted to add it to the forecast.

Medium and longer range models still indicate later next week and
towards the end of the month show more pronounced ridging with
potential for another round of weak offshore flow and associated
warming. CPC has the 6-10 forecast above normal temps for ca.

Aviation As of 10:41 am pdt Friday... For 18z tafs. Current
visible satellite shows marine layer mixing out nicely over land,
resulting inVFR at all TAF sites. Marine layer is expected to
remain just offshore through the afternoon, but will likely push
back onshore this evening and overnight. Generally light onshore
winds today, except breezy onshore winds through coastal gaps and
valleys, including near ksfo, by this afternoon and evening.

Forecast confidence: moderate
vicinity of ksfo... CurrentlyVFR. Ifr CIGS expected to return
overnight tonight, sometime around 10z at ksfo, and sooner for
koak. Breezy afternoon winds this afternoon, around 15-20 kt.

Sfo bridge approach... Lifr-ifr CIGS expected around 08-09z over
the approach.

Monterey bay terminals...VFR through the afternoon, with early
return of stratus this evening, around 02-03z. Early morning
lifr CIGS and fog possible before sunrise. Generally light winds
this afternoon, occasionally breezy.

Marine As of 10:23 am pdt Friday... Generally light southerly
winds over the coastal waters today. Onshore winds will be breezy
through the golden gate gap and across the northern san francisco
bay. Northwest winds return this weekend. Generally decreasing
seas through the coming days.

Mtr watches warnings advisories
Tngt Heat advisory until 9 pm... Caz510-511-517-518
sca... Sf bay until 9 pm
public forecast: mm
aviation: bam
marine: bam
visit us at

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
RCMC1 - 9414863 - Richmond, CA 16 mi44 min S 4.1 G 5.1 64°F 63°F1013 hPa (+0.0)
TIBC1 - Tiburon Pier, San Francisco Bay, CA 16 mi42 min S 7 65°F 1013 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 18 mi44 min S 14 G 18 60°F 1013.5 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 18 mi44 min SW 14 G 17 68°F 1012 hPa (-0.4)
FTPC1 - 9414290 - San Francisco, CA 21 mi44 min WSW 6 G 15 58°F 57°F1013.8 hPa (+0.0)
46237 - San Francisco Bar, CA (142) 22 mi44 min 58°F5 ft
PRYC1 - 9415020 - Point Reyes, CA 22 mi44 min ESE 7 G 11 59°F 58°F1013.8 hPa (+0.8)
PXOC1 - 9414311 - San Francisco (Pier 1), CA 23 mi44 min SW 6 G 13 64°F 1012.4 hPa (+0.4)
PXSC1 23 mi44 min 63°F 57°F
OBXC1 24 mi44 min 60°F 58°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 24 mi44 min WNW 11 G 13 59°F 1013.4 hPa (+0.4)
UPBC1 25 mi44 min WNW 18 G 20
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 25 mi44 min WNW 8.9 G 11
MZXC1 - 9415102 - Martinez-Amorco CA 25 mi44 min WNW 16 G 18 74°F 71°F1012 hPa (+0.0)61°F
AAMC1 - 9414750 - Alameda, CA 27 mi44 min W 7 G 8.9 65°F 64°F1013.8 hPa (+0.4)
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 27 mi54 min SSE 3.9 G 5.8 55°F 56°F5 ft1014 hPa (+0.7)
LNDC1 27 mi44 min WNW 6 G 9.9 65°F 1013.3 hPa (+0.3)
PCOC1 - 9415144 - Port Chicago, CA 29 mi44 min W 18 G 21 73°F 73°F1011.4 hPa (+0.0)
SFXC1 - San Francisco Bay Reserve, CA 31 mi59 min W 14 79°F 1011 hPa62°F
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 37 mi44 min NW 17 G 21 76°F 1010.5 hPa (+0.0)
46013 - Bodega Bay - 48NM North Northwest of San Francisco, CA 39 mi34 min ESE 3.9 G 5.8 54°F 52°F1014.4 hPa54°F
RTYC1 - 9414523 - Redwood City, CA 46 mi44 min N 9.9 G 12 68°F 74°F1012.3 hPa (+0.0)
46214 - Point Reyes, CA (029) 48 mi44 min 53°F7 ft

Wind History for Richmond, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Novato / Gnoss Field, CA4 mi49 minNNE 1310.00 miFair84°F60°F45%1012.2 hPa
Petaluma Municipal Airport, CA11 mi69 minWNW 99.00 miFair79°F60°F54%1012.9 hPa
Napa, Napa County Airport, CA18 mi50 minSSW 1410.00 miFair78°F57°F50%1011.4 hPa

Wind History from DVO (wind in knots)
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Last 24hrN7N11N10N14N14N12N10N10N9N8CalmN6NW44N4N5N9N9N8N7N8N8NE9N11
1 day ago65N12N11N9N9NE9CalmNE5N5N6N3CalmCalmCalmN5N4CalmCalmCalmCalm4SE6SE8
2 days agoSE5E6E56SW5S4E4SE6S5SE4CalmCalmCalmS3CalmCalmS3CalmCalmCalmCalm4SE54

Tide / Current Tables for Hog Island, San Antonio Creek, San Pablo Bay, California
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Hog Island
Click for Map
Fri -- 12:32 AM PDT     7.39 feet High Tide
Fri -- 05:36 AM PDT     Moonrise
Fri -- 05:47 AM PDT     Sunrise
Fri -- 08:08 AM PDT     -1.19 feet Low Tide
Fri -- 02:29 PM PDT     5.26 feet High Tide
Fri -- 07:32 PM PDT     New Moon
Fri -- 07:52 PM PDT     1.73 feet Low Tide
Fri -- 08:17 PM PDT     Moonset
Fri -- 08:37 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
7.27.36.75.53.81.90.3-0.8-1.2-0.90.11.534.45.25.24.63.72.71.91.72.33.65.2

Tide / Current Tables for Petaluma River Approach, San Pablo Bay, California Current
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Petaluma River Approach
Click for Map
Fri -- 12:12 AM PDT     -0.01 knots Slack
Fri -- 03:41 AM PDT     -1.03 knots Max Ebb
Fri -- 05:35 AM PDT     Moonrise
Fri -- 05:47 AM PDT     Sunrise
Fri -- 08:02 AM PDT     0.01 knots Slack
Fri -- 10:51 AM PDT     0.59 knots Max Flood
Fri -- 02:18 PM PDT     -0.00 knots Slack
Fri -- 04:28 PM PDT     -0.37 knots Max Ebb
Fri -- 06:52 PM PDT     0.00 knots Slack
Fri -- 07:32 PM PDT     New Moon
Fri -- 08:16 PM PDT     Moonset
Fri -- 08:36 PM PDT     Sunset
Fri -- 09:32 PM PDT     0.83 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.1-0.4-0.8-1-1-0.9-0.7-0.4-00.40.50.60.50.30.1-0.2-0.4-0.4-0.200.50.80.80.6

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 (16,3,4,5)
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Ground Weather Radar Station Sacramento, 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.