Tuesday, May23, 2017 L-36.com


Marine Weather and Tides
Rio Vista, CA

Version 3.4
What's New / NOTES
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.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 5:48AMSunset 8:19PM Tuesday May 23, 2017 1:52 AM PDT (08:52 UTC) Moonrise 3:36AMMoonset 4:57PM Illumination 6% Phase: Waning Crescent; Moon at 27 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- 944 Pm Pdt Mon May 22 2017
.small craft advisory in effect from Tuesday afternoon through Tuesday evening...
Tonight..SW winds 10 to 20 kt.
Tue..SW winds 5 to 15 kt...increasing to 15 to 25 kt with a few gusts to 30 kt in the afternoon.
Tue night..SW winds 15 to 30 kt...decreasing to 10 to 20 kt near midnight. Patchy fog after midnight.
Wed..SW winds 10 to 20 kt...increasing to 15 to 25 kt in the afternoon. Patchy fog in the morning.
Wed night..SW winds 15 to 25 kt.
Thu..SW winds 10 to 20 kt.
Fri..SW winds 5 to 15 kt.
Sat..SW winds 5 to 15 kt.
PZZ500 944 Pm Pdt Mon May 22 2017
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Surface high pressure over the eastern pacific will strengthen from tonight into Wednesday morning keeping northwesterly winds going over the outer waters. A surface ridge of high pressure over the central coast will cause winds over the inner coastal waters to be primarily light southwesterly through Tuesday. Except for the Monterey bay onshore winds will be gusty over the bays each afternoon and evening at least through mid-week.

7 Day Forecast for Marine Location Near Rio Vista, CA
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location: 38.15, -121.69     debug


Area Discussion for - Sacramento, CA
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Fxus66 ksto 230356
afdsto
area forecast discussion
national weather service sacramento ca
856 pm pdt Mon may 22 2017

Synopsis
Norcal's first triple digit heat of the season will continue for
portions of the central valley again on Tuesday. Cooling trend
begins Wednesday with near to slightly below normal temperatures
by Friday. Isolated late day showers or thunderstorms possible
over portions of the mountains Tuesday, Wednesday and again
Friday.

Discussion
Temperatures are running a few degrees warmer this evening over
the interior but have trended slightly cooler in the bay area.

Winds through the delta are light and are expected to remain
light tonight and for most of the day on Tuesday. Temperatures
should remain near todays high's on Tuesday for most areas with
only minimal cooling in the sacramento region. Winds will start to
increase in the delta late in the day but will probably not have
that much impact on Tuesday's daytime high temperatures inland
outside of the delta. Stronger winds through the delta with
better cooling for the sacramento region will occur Tuesday
evening. Further inland it will still be slow to cool off again at
night.

.Previous discussion (today through Thursday)
high amplitude upper ridge over the epac extends inland resulting
in well above normal temperatures over interior norcal. Afternoon
temps running upwards of 5 degrees higher than 24 hours ago.

Marine layer has dropped below 1000 ft and the delta breeze is non
existent attm. High temperatures expected above the century mark
in the northern sacramento valley and possibly at select spots in
the northern san joaquin valley this afternoon.

Upper ridging gets suppressed slightly over norcal Tuesday as
northern portions of it progress into the great basin, ahead of
short wave system tracking towards the pacnw. Little change
expected in MAX temps Tuesday with possible exception of slightly
more delta breeze influence into the southern sacramento valley.

High temperatures Tuesday continue above the century mark in the
northern and central sacramento valley. Mid to upper 90s expected
for the southern sac/northern san joaquin portions of the central
valley. Slight increase in available moisture and instability
Tuesday over the sierra nevada, south of us-50, may result in
isolated afternoon showers or thunderstorms.

Marine layer deepens Tuesday night as upper low approaches and
onshore flow increases. Models showing strong flow through the
delta developing overnight Tuesday into Wednesday. Weak cold
front progged to drop from the pacnw across northern portions of
ca on Wednesday as short wave system digs into the great basin and
expands westward. This will begin a cooling trend Wednesday that
continues through the remainder of the week. Slight chance of
showers or thunderstorms possible over the shasta and coastal
mountains Wednesday afternoon into evening.

Cooling continues Thursday with more stable ams. 80s expected
throughout the central valley with 70s in the delta and
foothills, and mainly 50s to 60s in the mountains.

Pch
.Extended discussion (Friday through Monday)
a ridge of high pressure will be building back into norcal for the
holiday weekend and that is going to bring quiet weather with
warming temperatures. We will see highs on Friday in the low to
mid 80's but will be warming to near 100 for some by Sunday. A
delta influence Friday and Saturday will keep southern areas a bit
cooler but it will start to weaken Sunday and Monday. Some weak
instability will build into the higher elevations Saturday through
Monday during the afternoon and evening and that will lead to
just an isolated t-storm chance. A short wave trough approaches
from the west later Monday and that will bring the chance for some
clouds but we look to stay dry.

-cjm

Aviation
Vfr conditions the next 24 hours at valley TAF sites. Winds will
be variable under 10 knots.

-cjm

Sto watches/warnings/advisories
None.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 13 mi53 min NW 9.9 G 13 66°F 1012 hPa (-0.4)
SFXC1 - San Francisco Bay Reserve, CA 18 mi68 min W 8 60°F 1013 hPa54°F
PCOC1 - 9415144 - Port Chicago, CA 20 mi53 min WSW 12 G 16 61°F 66°F1013 hPa (+0.0)
UPBC1 24 mi53 min NW 11 G 14
MZXC1 - 9415102 - Martinez-Amorco CA 24 mi53 min WNW 12 G 14 58°F 64°F1013.6 hPa (+0.0)57°F
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 31 mi53 min W 9.9 G 12 57°F 1013.5 hPa (+0.0)
LNDC1 40 mi53 min W 4.1 G 5.1 56°F 1014.5 hPa (+0.0)
PPXC1 - 9414847 - Richmond (Point Potrero), CA 40 mi53 min SSW 12 G 16 53°F 1014.7 hPa (+0.0)
OKXC1 - 9414776 - Oakland (Berth 34), CA 41 mi53 min WNW 4.1 G 5.1 54°F 1014.7 hPa (+0.0)
RCMC1 - 9414863 - Richmond, CA 41 mi53 min WSW 1.9 G 5.1 54°F 59°F1014.2 hPa (+0.0)
AAMC1 - 9414750 - Alameda, CA 42 mi53 min W 2.9 G 5.1 55°F 64°F1015 hPa (+0.0)
OBXC1 42 mi53 min 55°F 53°F
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 42 mi53 min SW 7 G 7
TIBC1 - Tiburon Pier, San Francisco Bay, CA 44 mi51 min NW 1.9 53°F 1014 hPa
PXSC1 44 mi53 min 54°F 54°F
PXOC1 - 9414311 - San Francisco (Pier 1), CA 44 mi53 min SW 1.9 G 4.1 54°F 1013.6 hPa (+0.0)
FTPC1 - 9414290 - San Francisco, CA 48 mi53 min SW 2.9 G 12 52°F 53°F1015.1 hPa (+0.0)

Wind History for Port Chicago, CA
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Fairfield / Travis Air Force Base, CA16 mi55 minSW 1510.00 miFair60°F52°F76%1012.1 hPa
Vacaville Nut Tree Airport, CA21 mi60 minSSW 410.00 miFair70°F52°F53%1011.9 hPa
Concord, Buchanan Field, CA22 mi60 minNNW 410.00 miFair61°F55°F81%1012 hPa

Wind History from SUU (wind in knots)
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Last 24hrSW14SW13SW15SW11SW10SW12SW15SW10SW10SW7CalmW4SW4CalmSW9SW11W12W10SW9S3SW11SW12SW11SW15
1 day agoSW13SW12W10SW6CalmSW5CalmN5NE10N5NE6CalmSW3CalmSW3W9SW11SW9SW10SW9SW11SW13SW13SW12
2 days agoSW10SW12SW12SW9W7CalmCalmCalmN3N7N7NE7W4CalmSW10SW11W13W11W11SW8SW13SW12SW11SW13

Tide / Current Tables for Rio Vista, Sacramento River, California
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Rio Vista
Click for Map
Tue -- 02:04 AM PDT     4.61 feet High Tide
Tue -- 04:35 AM PDT     Moonrise
Tue -- 05:49 AM PDT     Sunrise
Tue -- 09:16 AM PDT     -0.33 feet Low Tide
Tue -- 02:54 PM PDT     3.38 feet High Tide
Tue -- 05:56 PM PDT     Moonset
Tue -- 08:17 PM PDT     Sunset
Tue -- 09:05 PM PDT     0.98 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.44.34.64.43.72.71.80.80.1-0.3-0.20.51.52.53.23.43.22.72.11.61.211.21.8

Tide / Current Tables for Sherman Island (East), California Current
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Sherman Island (East)
Click for Map
Tue -- 02:32 AM PDT     -0.00 knots Slack
Tue -- 04:36 AM PDT     Moonrise
Tue -- 05:33 AM PDT     -1.45 knots Max Ebb
Tue -- 05:50 AM PDT     Sunrise
Tue -- 09:42 AM PDT     0.00 knots Slack
Tue -- 12:47 PM PDT     0.97 knots Max Flood
Tue -- 03:23 PM PDT     -0.00 knots Slack
Tue -- 05:48 PM PDT     -0.94 knots Max Ebb
Tue -- 05:57 PM PDT     Moonset
Tue -- 08:17 PM PDT     Sunset
Tue -- 08:43 PM PDT     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.20.90.4-0.4-1-1.4-1.4-1.2-0.9-0.40.20.60.910.80.2-0.4-0.8-0.9-0.7-0.40.10.71.1

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 Sacramento, CA (4,6,7,8)
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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.