Friday, June22, 2018 L-36.com


Marine Weather and Tides
Rio Vista, CA

Version 3.4
What's New / NOTES
5/20/2018 -- NOAA is having problems with the data feed that I use to draw the graphs. They are aware of the issue and working to resolve it. Sometimes changing the location by about a mile will give a correct graph. 3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.

Sunrise 5:43AMSunset 8:34PM Friday June 22, 2018 3:56 AM PDT (10:56 UTC) Moonrise 2:32PMMoonset 1:28AM Illumination 66% Phase: Waxing Gibbous; Moon at 9 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- 242 Am Pdt Fri Jun 22 2018
Today..SW winds 10 kt...increasing to 10 to 20 kt in the afternoon.
Tonight..SW winds 10 to 20 kt.
Sat..SW winds 5 to 15 kt.
Sat night..SW winds 10 to 20 kt.
Sun..SW winds 15 to 25 kt. Patchy fog after midnight.
Mon..W winds 5 to 15 kt. Patchy fog.
Tue..W winds 10 to 20 kt.
PZZ500 242 Am Pdt Fri Jun 22 2018
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... A strong area of high pressure over the eastern pacific will maintain moderate to strong northerly winds across the coastal waters through late Saturday night. The strongest winds will be located over the northern outer waters, north of pigeon point. These sustained strong winds will produce relatively large and steep winds waves on top of a building northwesterly swell with moderate periods. Winds will decrease Sunday as a southerly surge moves up the coast, but remain breezy along the inner coastal waters.

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 221026
afdsto
area forecast discussion
national weather service sacramento ca
326 am pdt Fri jun 22 2018

Synopsis
Hot and dry weather through the weekend. Temperatures returning to
near normal next week.

Discussion
Beginning of a relatively modest heat wave over norcal today and
through the weekend as 5h heights rise to around 590 dam, then
lower slightly on Sat as low pressure passes to the n, and then
rise again on Sun behind the low pressure system. This is a
relatively modest heat wave in looking at the +1 temp anomaly, as
the +2 anomaly generally stays to our w, and a 5-10 year return
interval. This will be the 2nd time this month the MAX temps at
the major climo sites will exceed triple digits since june 12-13
when most of the readings reached the low 100s. MAX temps during
this heat wave are expected to peak out between 105-110, with the
hottest expected in the NRN sac vly, rbl rdd.

As the low pressure system passes to our N and NE later tonight and
sat, northerly pressure gradients are forecast to increase to 11-12
mbs at times, through 06 sun, before weakening on sun, and turning
onshore up valley by the end of the weekend. The synoptic pattern is
conducive to the development of a northerly barrier jet in the
sacramento valley. Staudenmaier (1994)and mathews & juskie (2005)
have documented this phenomenon (in wrh ta-lites) and its impact
on wind advisories red flag warning considerations. The one
noticeable difference is the more easterly track of the digging
low pressure system (into the central rockys) in contrast to
autumn when the low pressure systems have a tendency to dig into
the great basin, farther W than this current system. One of the
effects of this nly wind is the adiabatic warming drying of the
katabatic winds which elevate temps and desiccate humidities both
overnight and during the day.

One potential stumbling block is the timing of the return of the
delta breeze and its impact on MAX temps on sun. With the upper
ridge axis building moving inland Sat nite sun, the warmest air is
expected to be over the CWA and a very warm nite and hot day are in
store for most of the cwa. The heating of the N end of the sac vly
should create a large temp density gradient between the land and the
ocean, resulting in a strong onshore pressure gradient by sun
afternoon or evening. This should cause at least a moderately
strong delta breeze which should cool the delta influence areas
quite rapidly. Sun could see a wide range of temps between the
carquinez strait and the ERN sacramento suburbs and foothills.

Since the marine layer will be relatively shallow ("squashed") by
large scale subsidence, the cooling effects may be limited away
from the immediate delta areas and temps in the upper 90s to
around 100 are forecast for sac dts on sun. However, the delta
area should be much cooler and have removed zone 18 from the heat
advisory on sun.

Seasonable wx returns to the CWA on Mon as another pac NW trof
provides onshore flow and some cooling. Jhm
.Extended discussion (Tuesday through Friday)
minor model differences through the extended forecast period but
general consensus is towards broad upper troughing. This will help
to keep temperatures only slightly above normal. Dry weather
expected through next week.

Aviation
Vfr conds ovr intr norcal nxt 24 hrs with w-nw flow alf. Sfc wnds
genly blo 12 kts.

Sto watches warnings advisories
Heat advisory from noon today to 8 pm pdt Sunday for central
sacramento valley-clear lake southern lake county-motherlode-
northeast foothills sacramento valley- northern sacramento valley-
northern san joaquin valley-southern sacramento valley-western
plumas county lassen park.

Heat advisory from noon today to midnight pdt Saturday night for
carquinez strait and delta.

Red flag warning from midnight tonight to 8 pm pdt Sunday for
carquinez strait and delta-central sacramento valley in glenn,
colusa, yuba, northern sutter, and butte county below 1000 ft-
eastern mendocino nf-eastern portion of shasta trinity nf-lake
county portion of lake-napa-sonoma unit-northern motherlode from
1000 to 3000 ft. Includes portions of nevada-yuba-placer-amador
and eldorado units-northern sacramento valley to southern tehama
county line below 1000 ft-northern san joaquin valley in san
joaquin and stanislaus counties below 1000 ft-northern sierra
foothills from 1000 to 3000 ft. Includes portions of shasta-
trinity and butte units-southeast edge shasta-trinity nf and
western portions of tehama-glenn unit-southern motherlode from
1000 to 3000 ft. Includes portions of calaveras-tuolumne unit-
southern sacramento valley in yolo-sacramento far western
placer, southern sutter and solano county below 1000 ft.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 13 mi38 min NW 11 G 15 67°F 1011.9 hPa
SFXC1 - San Francisco Bay Reserve, CA 18 mi71 min W 8 61°F 1012 hPa54°F
PCOC1 - 9415144 - Port Chicago, CA 20 mi44 min WSW 13 G 14 59°F 68°F1013 hPa
MZXC1 - 9415102 - Martinez-Amorco CA 24 mi38 min 67°F
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 31 mi38 min W 5.1 G 7 60°F 1013.4 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 40 mi38 min SSW 7 G 9.9 1014.5 hPa
LNDC1 40 mi38 min ESE 2.9 G 4.1 58°F 1014.4 hPa
OKXC1 - 9414776 - Oakland (Berth 34), CA 41 mi38 min SW 5.1 G 7 56°F 1014.4 hPa
RCMC1 - 9414863 - Richmond, CA 41 mi44 min S 7 G 9.9 56°F 62°F1014 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 42 mi44 min SW 8.9 G 11
OBXC1 42 mi38 min 56°F 54°F
AAMC1 - 9414750 - Alameda, CA 42 mi44 min E 1.9 G 2.9 57°F 67°F1014.6 hPa
TIBC1 - Tiburon Pier, San Francisco Bay, CA 44 mi45 min S 12 53°F 1014 hPa
PXSC1 44 mi44 min 56°F 52°F
PXOC1 - 9414311 - San Francisco (Pier 1), CA 44 mi44 min SW 2.9 G 5.1 55°F 1013.3 hPa
FTPC1 - 9414290 - San Francisco, CA 48 mi44 min WNW 1.9 G 4.1 53°F 57°F1014.7 hPa

Wind History for Port Chicago, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Fairfield / Travis Air Force Base, CA16 mi2 hrsSW 1410.00 miFair60°F51°F72%1012.1 hPa
Vacaville Nut Tree Airport, CA21 mi63 minN 010.00 miFair66°F52°F61%1011.9 hPa
Concord, Buchanan Field, CA22 mi63 minN 010.00 miFair60°F54°F80%1012 hPa

Wind History from SUU (wind in knots)
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Last 24hrSW17SW18SW15SW14SW11SW9W8SW8SW7SW5CalmSW8SW10SW12SW14SW12SW15SW15SW16SW18SW15SW13SW14SW14
1 day agoSW24
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2 days agoSW19
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SW16SW18SW16SW16SW15SW13SW15SW15SW19SW19SW19SW18SW20
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Tide / Current Tables for Rio Vista, Sacramento River, California
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Rio Vista
Click for Map
Fri -- 12:00 AM PDT     4.37 feet High Tide
Fri -- 02:28 AM PDT     Moonset
Fri -- 05:44 AM PDT     Sunrise
Fri -- 07:07 AM PDT     0.44 feet Low Tide
Fri -- 12:24 PM PDT     2.84 feet High Tide
Fri -- 03:31 PM PDT     Moonrise
Fri -- 06:52 PM PDT     0.88 feet Low Tide
Fri -- 08:33 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.44.23.83.32.51.60.80.40.61.322.62.82.82.72.421.510.91.2233.9

Tide / Current Tables for Sherman Island (East), California Current
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Sherman Island (East)
Click for Map
Fri -- 12:44 AM PDT     -0.00 knots Slack
Fri -- 02:28 AM PDT     Moonset
Fri -- 04:20 AM PDT     -1.16 knots Max Ebb
Fri -- 05:44 AM PDT     Sunrise
Fri -- 07:41 AM PDT     0.00 knots Slack
Fri -- 10:28 AM PDT     0.89 knots Max Flood
Fri -- 12:47 PM PDT     -0.00 knots Slack
Fri -- 03:32 PM PDT     Moonrise
Fri -- 03:39 PM PDT     -0.95 knots Max Ebb
Fri -- 06:53 PM PDT     0.00 knots Slack
Fri -- 08:33 PM PDT     Sunset
Fri -- 10:34 PM PDT     1.29 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.5-0.2-0.7-1-1.2-1.1-0.8-0.40.20.60.90.80.5-0.1-0.6-0.9-0.9-0.8-0.40.10.611.21.3

Weather Map and Satellite Images
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wmap_P
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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Sacramento, CA (6,6,7,8)
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Ground Weather Radar Station Sacramento, 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.