Thursday, September21, 2017 L-36.com


Marine Weather and Tides
Black Point-Green Point, 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 6:57AMSunset 7:08PM Thursday September 21, 2017 6:56 AM PDT (13:56 UTC) Moonrise 7:21AMMoonset 7:20PM Illumination 1% Phase: New Moon; Moon at 1 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- 225 Am Pdt Thu Sep 21 2017
.small craft advisory in effect until 3 am pdt early this morning...
.small craft advisory in effect from 1 pm pdt this afternoon through this evening...
Today..NW winds 5 to 15 kt...becoming W 15 to 25 kt in the afternoon.
Tonight..W winds 15 to 25 kt...decreasing to 5 to 15 kt after midnight.
Fri..W winds 5 to 15 kt.
Fri night..W winds 10 to 20 kt.
Sat..W winds 5 to 15 kt.
Sun..N winds 10 kt...becoming w.
Mon..NE winds 5 to 15 kt...becoming w.
PZZ500 225 Am Pdt Thu Sep 21 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 across the coastal waters today behind a cold front that moved through the region on Wednesday. Moderate northwest swell will continue through the rest of the week and into the weekend.

7 Day Forecast for Marine Location Near Black Point-Green Point, CA
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location: 38.11, -122.5     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 211136
afdmtr
area forecast discussion
national weather service san francisco bay area
436 am pdt Thu sep 21 2017

Synopsis A cool, upper level trough will dominate the western
portion of the country through the workweek maintaining cooler
than average temperatures and breezy conditions. Aside from the
potential for isolated showers offshore or near the coast Thursday,
dry weather conditions will prevail. A gradual warming trend is
then expected to begin this weekend and persist into early next
week.

Discussion As of 2:45 am pdt Thursday... A cold front passed
through the bay area on Wednesday bringing some light showers,
breezy conditions and cooler temperatures. The cold front is now
south of the forecast area, but continues to produce precipitation
across the sierra. Behind the front and rather robust upper level
trough is currently swinging through norcal. Latest satellite
imagery and radar both indicate showers over the coastal waters.

These showers are tracking mostly north to south. Model guidance
has not changed too much from previous runs regarding the shower
activity. Showers will continue early today, but remain offshore
with no impact to the land areas of the bay area region.

Do expect some clearing of clouds today, but temperatures will
remain cool as the upper trough moves through. Latest model runs
still show a cool airmass with 850mb temps in the 4-5 deg c range.

As a result, daytime highs will be in the 60s and 70s or about 5
to 10 deg below normal for late september. Overnight lows will be
chilly as well with the hills dropping into the upper 30s.

Additionally, hi-res models show some breezy winds today and
Friday. Gusts 30 to 40 mph along the coast and higher terrain
seems plausible.

Another pattern shift is forecast to develop this weekend and then
persisting into next week. In the wake of the upper trough high
pressure will build over the region this weekend. A noticeable
warming trend is forecast to develop this weekend and peak next
week. Widespread 80s to possibly mid 90s will be possible by early
next week. Pattern recognition and climatology also suggest
periods of north to offshore winds will possible this weekend and
next week. The offshore flow will further enhance any warming and
drying. Fire weather concerns may increase due to offshore flow
with hot and dry conditions.

Aviation As of 04:35 am pdt Thursday for 12z tafs... Currently
vfr conditions at all sites with some cloud development around
kmry currently showing on satellite imagery. Gusty winds are
expected to continue throughout the day before decreasing late
tonight.

Vicinity of ksfo...VFR conditions will prevail through tonight.

Gusts up to 29 kt were observed overnight along with periods of
sustained winds at 20 kt. Expecting similar windy conditions until
tonight.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals... Some low cloud development around kmry
this morning. Confidence is low as to how long the clouds will
remain around the airport. Breezy onshore flow is expected today
at kmry and ksns with gusts up to 20 kt possible this afternoon.

Marine As of 02:25 am pdt Thursday... Increasing northwesterly
winds will continue across the coastal waters today behind a cold
front that moved through the region on Wednesday. Moderate
northwest swell will continue through the rest of the week and
into the weekend.

Mtr watches warnings advisories
Tday Sca... Pt arena to pt reyes 0-10 nm
sca... Pt reyes to pigeon pt 0-10 nm
sca... Pigeon pt to pt pinos 0-10 nm
sca... Pt pinos to pt piedras blancas 0-10 nm
sca... Pigeon pt to pt piedras blancas 10-60 nm
sca... Pt arena to pigeon pt 10-60 nm
sca... Mry bay from 8 am
sca... Sf bay from 1 pm
public forecast: mm
aviation: as
marine: as
visit us at

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 13 mi57 min NW 9.9 G 13 58°F 1010.7 hPa (-0.0)
RCMC1 - 9414863 - Richmond, CA 14 mi57 min NW 11 G 15 58°F 65°F1010.8 hPa (-0.5)
TIBC1 - Tiburon Pier, San Francisco Bay, CA 15 mi65 min Calm 57°F 1011 hPa (-1.0)
PPXC1 - 9414847 - Richmond (Point Potrero), CA 16 mi57 min WNW 9.9 G 13 59°F 1011.1 hPa (-0.4)
FTPC1 - 9414290 - San Francisco, CA 21 mi57 min WSW 7 G 11 57°F 62°F1011.3 hPa (-0.7)
MZXC1 - 9415102 - Martinez-Amorco CA 21 mi57 min W 15 G 17 58°F 68°F1010.9 hPa (+0.0)48°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 22 mi57 min NNW 7 G 8.9 60°F 1010.9 hPa (-0.5)
PXSC1 22 mi57 min 59°F 47°F
PXOC1 - 9414311 - San Francisco (Pier 1), CA 22 mi57 min WSW 5.1 G 8.9 58°F 1010 hPa (-0.5)
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 23 mi57 min NW 6 G 8.9
46237 - San Francisco Bar, CA (142) 23 mi87 min 59°F5 ft
OBXC1 23 mi57 min 60°F 47°F
LNDC1 25 mi57 min NW 6 G 8 59°F 1010.9 hPa
PCOC1 - 9415144 - Port Chicago, CA 25 mi57 min WSW 9.9 G 13 56°F 68°F1010.7 hPa (+0.0)
SFXC1 - San Francisco Bay Reserve, CA 26 mi87 min WNW 6 51°F 1010 hPa47°F
PRYC1 - 9415020 - Point Reyes, CA 26 mi57 min W 19 G 24 61°F 55°F1011.1 hPa (-0.8)
AAMC1 - 9414750 - Alameda, CA 26 mi57 min W 8 G 9.9 60°F 68°F1011.5 hPa (-0.4)
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 30 mi67 min NW 19 G 23 57°F 56°F6 ft1011.3 hPa (-0.9)
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 33 mi57 min W 7 G 11 57°F 1010.3 hPa (+0.0)
RTYC1 - 9414523 - Redwood City, CA 44 mi57 min W 13 G 16 58°F 70°F1010.8 hPa (-0.6)
46013 - Bodega Bay - 48NM North Northwest of San Francisco, CA 44 mi57 min NW 18 G 21 58°F 58°F1012.2 hPa (-0.5)54°F

Wind History for Richmond, CA
(wind in knots)    EDIT      (on/off)   Help
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Last
24hr
NW4
SW3
SW2
S3
SE2
SW5
G8
W3
G8
--
SW11
G15
SW7
G12
SW6
G12
W9
G15
NW10
G14
NW12
G18
NW10
G14
NW11
G14
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G13
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G17
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G12
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NW10
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NW11
G15
1 day
ago
NW6
G9
E1
G5
NW4
S1
NW1
SW3
S9
G12
S6
G10
S8
G11
NW9
NW11
G14
NW11
G16
W9
G16
NW8
G11
NW7
G11
NW6
NW8
G11
NW6
G9
W4
NW6
G9
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G13
NW12
G17
NW11
G14
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G10
2 days
ago
SW3
NW3
G8
S6
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G10
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G14
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G14
SW7
G11
S9
G13
SW5
G10
NW11
G16
NW5
G8
NW14
G19
W14
G19
NW16
G20
W12
G16
NW14
G23
NW15
G21
NW14
G19
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G17
NW7
G12
NW12
G15
NW7
G10
NW10
NW8
G11

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Novato / Gnoss Field, CA4 mi82 minno data10.00 miFair52°F44°F77%1010.8 hPa
Petaluma Municipal Airport, CA12 mi82 minWNW 610.00 miFair50°F44°F82%1011.2 hPa
Napa, Napa County Airport, CA14 mi63 minN 310.00 miFair46°F43°F89%1009.9 hPa

Wind History from DVO (wind in knots)
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Last 24hrN5SE4CalmNW9W7
G15
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SW17W12
G19
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G24
W18W14
G24
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G24
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G20
W12
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G19
W11W9
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NW9NW11
G18
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G13
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G17
1 day agoN8N10N10N8
G16
N11
G18
N9
G14
W11
G17
NW10
G16
W12W14
G20
W16
G22
W15
G26
W10
G17
NW7NW9
G16
4NW13NW12NW10CalmCalmNW10
G18
4N4
2 days agoCalmSE5CalmSW8SW13SW16
G23
SW14
G23
W17NW13
G20
NW13
G19
5W16
G24
W16
G24
W15
G24
SW10
G15
W11
G21
W8
G16
4W10W84NE6CalmN6

Tide / Current Tables for Petaluma River entrance, San Pablo Bay, California
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Petaluma River entrance
Click for Map
Thu -- 02:08 AM PDT     6.12 feet High Tide
Thu -- 06:57 AM PDT     Sunrise
Thu -- 08:20 AM PDT     Moonrise
Thu -- 08:45 AM PDT     0.60 feet Low Tide
Thu -- 02:37 PM PDT     6.15 feet High Tide
Thu -- 07:07 PM PDT     Sunset
Thu -- 08:19 PM PDT     Moonset
Thu -- 09:11 PM PDT     0.66 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.45.66.15.95.13.92.61.50.80.61.22.43.85.166.15.64.63.321.10.70.91.9

Tide / Current Tables for Petaluma River Approach, San Pablo Bay, California Current
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Petaluma River Approach
Click for Map
Thu -- 02:18 AM PDT     -0.01 knots Slack
Thu -- 05:25 AM PDT     -0.75 knots Max Ebb
Thu -- 06:56 AM PDT     Sunrise
Thu -- 08:20 AM PDT     Moonrise
Thu -- 08:40 AM PDT     0.00 knots Slack
Thu -- 11:12 AM PDT     0.65 knots Max Flood
Thu -- 02:49 PM PDT     -0.00 knots Slack
Thu -- 06:08 PM PDT     -0.70 knots Max Ebb
Thu -- 07:07 PM PDT     Sunset
Thu -- 08:19 PM PDT     Moonset
Thu -- 09:14 PM PDT     0.01 knots Slack
Thu -- 11:45 PM PDT     0.62 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.60.40.1-0.3-0.6-0.7-0.7-0.6-0.30.10.50.60.60.50.2-0.1-0.4-0.6-0.7-0.7-0.4-0.10.30.6

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 (9,2,3,4)
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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.