Saturday, July22, 2017 L-36.com


Marine Weather and Tides
Diablo, 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 6:02AMSunset 8:26PM Saturday July 22, 2017 3:50 AM PDT (10:50 UTC) Moonrise 4:18AMMoonset 6:55PM Illumination 2% Phase: Waning Crescent; Moon at 28 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 Am Pdt Sat Jul 22 2017
.small craft advisory in effect from 1 pm pdt this afternoon through this evening...
Today..SW winds 10 to 20 kt...increasing to 15 to 25 kt in the afternoon.
Tonight..SW winds 10 to 20 kt.
Sun..SW winds 5 to 15 kt...increasing to 15 to 25 kt in the afternoon.
Sun night..SW winds 15 to 25 kt.
Mon..SW winds 10 to 20 kt.
Tue..SW winds 5 to 15 kt.
Wed..SW winds 10 kt.
PZZ500 228 Am Pdt Sat Jul 22 2017
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... High pressure over the eastern pacific will shift to the northwest today as a thermal trough extends towards the central coast of california. As a result, winds will begin to decrease for most of the coastal waters. The northern outer waters, however, will remain gusty through the weekend.

7 Day Forecast for Marine Location Near Diablo, CA
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location: 37.87, -121.91     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 220531
afdmtr
area forecast discussion
national weather service san francisco bay area
1031 pm pdt Fri jul 21 2017

Synopsis Temperatures will continue to warm into the weekend as
an upper level ridge of high pressure strengthens over california.

Temperatures will moderate next week as the ridge progresses to
the east.

Discussion As of 9:20 pm pdt Friday... Our expected warming
trend got off to a very tentative start today as afternoon highs
in most locations were only a few degrees warmer than yesterday.

Warming is expected to be more robust on Saturday as the upper
ridge centered over the desert southwest continues to build to the
west and over california. The marine layer, currently at a depth
of about 1500 feet per fort ord profiler data, is expected to
compress by tomorrow and the overlying airmass is forecast to warm
by a couple of degrees c. In addition, models indicate that winds
near the top of the boundary layer will veer from westerly to
northerly by tomorrow morning which should help bring drier air
into the lower levels by then. Our current forecast calls for
warming of about 5 to 10 degrees tomorrow, which seems about
right. Afternoon highs tomorrow will warm into the 90s in the
inland valleys and in the hills above 1000 feet. Meanwhile,
continued onshore surface flow will keep coastal areas seasonably
cool with highs mainly in the upper 60s and 70s. Late night and
morning low clouds are expected to remain patchy in the short-
term, and confined mainly to areas near the coast.

Although the airmass over our region is forecast to remain warm
going into Sunday, the development of southerly flow by then will
mean at least slight cooling for most locations during the second
half of the weekend, with more significant cooling expected in
locations such as the north bay valleys and coastal santa cruz
county.

Warmer weather this weekend will raise heat risks into the
moderate category for many inland areas, especially on Saturday.

However, we are not expecting temperatures this weekend to be
nearly as oppressive as last weekend.

An upper level low is forecast to develop just off the northern
california coast by late Sunday, remain there through Monday, and
then shift inland across northern california by late Tuesday or
Tuesday night. At the same time, the upper ridge will retreat to
the east. These developments will result widespread cooling
across inland areas during the first few days of the work week.

Temperatures are then expected to warm gradually during the second
half of the week.

Southerly flow late in the weekend and into the early part of next
week may bring mid upper level monsoon moisture over our area.

Due to model inconsistencies, there is currently a quite a bit of
uncertainty as to whether this moisture will make it far enough
west for any chance of showers thunderstorms in our area. The 00z
nam keeps the bulk of the monsoon moisture and mid level
instability to our east, but it's certainly close enough to watch
carefully for any signs this may shift farther to the west.

Aviation As of 10:30 pm pdt Friday... Similar conditions to
yesterday with the marine layer near 1000 feet and a strong n-s
gradient. Stratus has started to develop along the coast and will
spread into the mry bay area terminals and through the golden gate
into oak and possibly sfo early Saturday morning.

Vicinity of ksfo...VFR. Possible MVFR CIGS between 12z and 16z.

West winds gusting to 28 kt through 04z.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals... Ifr CIGS over mry spreading into sns by
12z. Clearing by 17z.

Marine As of 10:30 pm pdt Friday... A 1027 mb high 750 miles
west of point pinos will move northwest on Saturday as a thermal
trough extends towards the central coast. This will result in
decreasing winds over the coastal waters except for the northern
outer waters.

Mtr watches warnings advisories
Tngt Sca... Pt arena to pt reyes 0-10 nm
sca... Pt arena to pigeon pt 10-60 nm
sca... Pigeon pt to pt piedras blancas 10-60 nm
sca... Pt pinos to pt piedras blancas 0-10 nm
sca... Pt reyes to pigeon pt 0-10 nm until 3 am
public forecast: dykema
aviation: W pi
marine: W pi
visit us at

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 12 mi51 min NW 8.9 G 12 65°F 1010.9 hPa (-0.5)
PCOC1 - 9415144 - Port Chicago, CA 15 mi51 min W 14 G 16 61°F 70°F1011.9 hPa (-0.8)
MZXC1 - 9415102 - Martinez-Amorco CA 16 mi51 min NW 11 G 13 60°F 68°F1012.6 hPa (-0.7)58°F
LNDC1 20 mi51 min WSW 5.1 G 7 58°F 1013.4 hPa (-0.9)
AAMC1 - 9414750 - Alameda, CA 22 mi51 min WSW 5.1 G 7 58°F 69°F1013.9 hPa (-0.9)
OKXC1 - 9414776 - Oakland (Berth 34), CA 23 mi51 min SW 6 G 8 57°F 1013.4 hPa (-0.9)
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 23 mi51 min SW 9.9 G 13
OBXC1 23 mi51 min 57°F 54°F
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 23 mi51 min WSW 8 G 9.9 60°F 1012.3 hPa (-0.7)
SFXC1 - San Francisco Bay Reserve, CA 24 mi66 min W 12 60°F 1011 hPa56°F
PPXC1 - 9414847 - Richmond (Point Potrero), CA 24 mi51 min SSW 9.9 G 15 57°F 1013.4 hPa (-0.8)
PXSC1 26 mi51 min 57°F 53°F
PXOC1 - 9414311 - San Francisco (Pier 1), CA 26 mi51 min Calm G 1.9 56°F 1012.3 hPa
RCMC1 - 9414863 - Richmond, CA 27 mi51 min S 8 G 12 56°F 63°F1013 hPa (-0.9)
FTPC1 - 9414290 - San Francisco, CA 30 mi51 min WSW 5.1 G 8.9 55°F 57°F1013.7 hPa (-0.9)
RTYC1 - 9414523 - Redwood City, CA 30 mi51 min S 1.9 G 4.1 60°F 73°F1012.9 hPa (-0.9)
46237 - San Francisco Bar, CA (142) 39 mi51 min 54°F4 ft

Wind History for Port Chicago, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Concord, Buchanan Field, CA11 mi58 minSW 310.00 miFair62°F53°F73%1010.9 hPa
Livermore, Livermore Municipal Airport, CA13 mi58 minNW 310.00 miFair57°F52°F83%1012.7 hPa
Hayward, Hayward Air Terminal, CA18 mi57 minN 410.00 miFair60°F51°F72%1014.3 hPa
Oakland, Metro Oakland International Airport, CA20 mi58 minN 410.00 miA Few Clouds57°F54°F90%1013.5 hPa

Wind History from CCR (wind in knots)
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Last 24hrS12S11S13S13S12S9S5S6NW11NW9NW10NW10W8W10W8S11S10S10S13SW9SW11S11W3SW3
1 day agoS13
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S12S14S15S11SW12S11S10S11S8SW7W8W10SW9SW9S13S12S13S15S12
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2 days agoSW6SW9S5SW10SW7S7S6CalmNW9NW11NW10NW9W10W7W10
G16
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G19
S15S15S15

Tide / Current Tables for Pittsburg, New York Slough, Suisun Bay, California
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Pittsburg
Click for Map
Sat -- 01:50 AM PDT     4.93 feet High Tide
Sat -- 05:17 AM PDT     Moonrise
Sat -- 06:02 AM PDT     Sunrise
Sat -- 09:47 AM PDT     -0.46 feet Low Tide
Sat -- 03:51 PM PDT     3.60 feet High Tide
Sat -- 07:55 PM PDT     Moonset
Sat -- 08:25 PM PDT     Sunset
Sat -- 09:04 PM PDT     1.58 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.24.84.94.63.931.910.2-0.3-0.4-00.81.92.83.43.63.32.82.21.81.61.82.4

Tide / Current Tables for Antioch Pt .3 mi E, San Joaquin River, California Current
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Antioch Pt .3 mi E
Click for Map
Sat -- 01:37 AM PDT     1.84 knots Max Flood
Sat -- 04:22 AM PDT     -0.00 knots Slack
Sat -- 05:17 AM PDT     Moonrise
Sat -- 06:02 AM PDT     Sunrise
Sat -- 08:07 AM PDT     -2.00 knots Max Ebb
Sat -- 12:32 PM PDT     0.01 knots Slack
Sat -- 03:53 PM PDT     1.43 knots Max Flood
Sat -- 06:32 PM PDT     -0.00 knots Slack
Sat -- 07:54 PM PDT     Moonset
Sat -- 08:24 PM PDT     Sunset
Sat -- 08:55 PM PDT     -0.79 knots Max Ebb
Sat -- 11:28 PM PDT     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.21.71.81.30.4-0.6-1.3-1.8-2-1.9-1.6-1.1-0.40.411.31.41.10.4-0.3-0.7-0.8-0.7-0.3

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 (6,6,7,8)
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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.