Thursday, May25, 2017 L-36.com


Marine Weather and Tides
Port Costa, 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 5:49AMSunset 8:21PM Wednesday May 24, 2017 9:58 PM PDT (04:58 UTC) Moonrise 4:18AMMoonset 6:11PM 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- 925 Pm Pdt Wed May 24 2017
.small craft advisory in effect until 9 pm pdt this evening...
.small craft advisory in effect from Thursday afternoon through late Thursday night...
Tonight..SW winds 15 to 25 kt...decreasing to 10 to 20 kt by midnight. Light drizzle possible late.
Thu..SW winds 10 to 20 kt. Light drizzle in the morning.
Thu night..SW winds 10 to 20 kt.
Fri..SW winds 5 to 15 kt.
Fri night..SW winds 5 to 15 kt.
Sat..SW winds 10 kt.
Sun..SW winds 10 kt.
Memorial day..SW winds 10 kt.
PZZ500 925 Pm Pdt Wed May 24 2017
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... A newly developing weak low pressure center will form just west of the bay area Thursday and remain nearly stationary through Friday. Southerly winds over much of the coastal waters will persist tonight becoming locally enhanced and gusty Thursday and perhaps again on Friday especially along the big sur and Monterey bay coastline. High pressure will redevelop over the eastern pacific just prior to the memorial day weekend bringing a return to more typical afternoon and evening onshore winds to the coastal waters and bays.

7 Day Forecast for Marine Location Near Port Costa, CA
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location: 38.03, -122.15     debug


Area Discussion for - Sacramento, CA
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Fxus66 ksto 250410
afdsto
area forecast discussion
national weather service sacramento ca
910 pm pdt Wed may 24 2017

Synopsis
Cooling into Friday with near to slightly below normal
temperatures. Slow warming trend this weekend into next week.

Isolated afternoon showers or thunderstorms possible over the
mountains through the middle of next week.

Discussion
Temperatures are running much cooler this evening at 6 to 20
degrees cooler. The marine layer has increased to around 2500 feet
this evening and the likelihood of marine stratus spreading into
the southern sacramento valley has increased. Breezy conditions
for parts of the sacramento valley are expected through at least
midnight if not longer. Temperatures will be even cooler for
Thursday ranging from the mid 70s to mid 80s in the central valley
with parts of the delta likely to only warm into the upper 60s.

The trough will deepen overnight bringing more synoptic cooling
and linger through Friday so not much change is expected in
temperatures between the two days. A deep marine layer is expected
Thursday night and may lead to more low clouds spreading into the
interior by Friday morning. The latest NAM is indicating isolated
convective activity along the northern coastal range each of the
next two days while the GFS is dry on Thursday and indicates some
possible activity along the crest and over the northern mountains.

Previous discussion
It's 3 pm and valley temperatures are notably cooler than 24 hours
ego, especially in areas closer to the delta region like
sac metro region. Cities from the delta towards sacramento and
stockton and up towards marysville are running 10-20 degrees
cooler this afternoon. Valley temperatures at this hour are
ranging upper 70s to low 90s with the warmest area in the
redding-red bluff vicinity.

Cooling through the delta into portions of the central valley is
due to an upper level trough that has increased the marine layer,
pushed high clouds over central ca, and cooled the airmass aloft.

Fort ord profiler this afternoon indicates the marine layer has
been hovering near 2000 feet deep. If this marine layer remains,
we might see some patchy stratus move into the valley early
Thursday morning. The inhibitor to marine stratus is that onshore
winds will be fairly weak during the early morning hours so not
expecting a major stratus intrusion. However, we did increase the
sky coverage for Thursday morning in delta influenced areas.

The upper trough lingers over our CWA through Friday maintaining
the cooler temperature trend compared to earlier this week. The
nam suggests there could be some instability over the mountains,
primarily the sierra south of tahoe, which could trigger isolated
afternoon showers thunderstorms Friday through the holiday
weekend. Keep an eye on the sky for cloud build-ups in case you're
outside.

By Saturday, the trough weakens and moves eastward as upper
ridging builds over norcal. Valley highs on Friday will range from
the mid 70s to mid 80s then back into the 80s with a few low 90s
on Saturday.

Please be safe during the holiday... Keep in mind that heat can
still have impacts even if it's not record heat. Also, remember
that our streams, rivers, and lakes are running very cold due to
snow melt. Wear a life jacket near and in the water because
hypothermia can set in quickly and prevent you from swimming to
safety. Jbb
.Extended discussion (Sunday through Wednesday)
hot weather will continue for the holiday weekend and through the
extended period. Those with outdoor holiday plans should prepare
for hot, above normal temperatures, especially on Monday. Strong
ridging will remain through early next week. The northern
sacramento valley could see temperatures near 100 on Monday. For
the rest of the area, temperatures will range from in the 90s in
the rest of the valley to 60s-70s in the mountains. A trough
begins to break down the strong ridge Wednesday, cooling the high
temperatures by about 5 degrees. Istability and weak moisture
return Monday over the higher elevations - could see an isolated
shower or thunderstorm through Wednesday evening.

Hec

Aviation
Vfr conditions next 24 hours at TAF sites. Gusts to 30 kts invof
of the delta and 20 kts across northern sac valley through 12z
Thursday. Stratus intrusion through delta and central sacramento
valley possible early Thursday morning. Hec

Sto watches warnings advisories
None.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MZXC1 - 9415102 - Martinez-Amorco CA 1 mi58 min WSW 14 G 23 56°F 65°F1006.6 hPa (-0.4)54°F
UPBC1 2 mi58 min W 21 G 27
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 6 mi58 min WSW 23 G 27 56°F 1006.2 hPa (-0.6)
PCOC1 - 9415144 - Port Chicago, CA 6 mi40 min WSW 13 G 19 56°F 65°F1006.3 hPa
SFXC1 - San Francisco Bay Reserve, CA 13 mi73 min W 13 56°F 1006 hPa51°F
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 14 mi58 min WNW 19 G 25 57°F 1005 hPa (-0.4)
PPXC1 - 9414847 - Richmond (Point Potrero), CA 14 mi58 min SW 23 G 29 56°F 1007 hPa (-0.9)
RCMC1 - 9414863 - Richmond, CA 16 mi58 min SSW 7 G 11 56°F 59°F1007.1 hPa
LNDC1 18 mi58 min W 11 G 19 57°F 1007.4 hPa (-0.3)
TIBC1 - Tiburon Pier, San Francisco Bay, CA 18 mi61 min SE 8.9 54°F 1007 hPa
OKXC1 - 9414776 - Oakland (Berth 34), CA 18 mi58 min WSW 13 G 16 56°F 1007.5 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 18 mi58 min WSW 15 G 23
OBXC1 19 mi58 min 56°F 51°F
PXSC1 20 mi58 min 56°F 50°F
AAMC1 - 9414750 - Alameda, CA 20 mi58 min W 8 G 12 56°F 64°F1007.9 hPa (-0.0)
PXOC1 - 9414311 - San Francisco (Pier 1), CA 21 mi58 min SW 4.1 G 20 55°F 1006.4 hPa (-0.4)
FTPC1 - 9414290 - San Francisco, CA 23 mi58 min WSW 8.9 G 18 55°F 55°F1007.9 hPa (-0.5)
46237 - San Francisco Bar, CA (142) 31 mi58 min 54°F5 ft
RTYC1 - 9414523 - Redwood City, CA 36 mi58 min SSW 8 G 11 59°F 71°F1006.1 hPa
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 41 mi68 min SSW 7.8 G 9.7 53°F 53°F6 ft1007.8 hPa (-0.8)
PRYC1 - 9415020 - Point Reyes, CA 44 mi58 min SE 6 G 12 55°F 57°F1007 hPa (-1.0)

Wind History for Martinez-Amorco Pier, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Concord, Buchanan Field, CA6 mi65 minWSW 1110.00 miFair57°F48°F74%1005.3 hPa
Napa, Napa County Airport, CA14 mi64 minW 1010.00 miMostly Cloudy57°F50°F78%1005.9 hPa
Fairfield / Travis Air Force Base, CA21 mi60 minSW 1710.00 miFair56°F50°F81%1005.1 hPa
Novato / Gnoss Field, CA23 mi83 minVar 4 G 1110.00 miFair57°F48°F72%1007.1 hPa
Oakland, Metro Oakland International Airport, CA23 mi65 minW 910.00 miMostly Cloudy60°F51°F72%1007.4 hPa

Wind History from CCR (wind in knots)
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Last 24hrNW7W5W6N5W5W8W7W6SW46W6S9S12S10W10W10W14W12W14SW13W10W17W8SW11
1 day agoNW5N3N4NW4NW5N3N4NW4NW4NW5NW4NW7NW6NW8NW10NW10NW13NW12W9W9W10SW13W15W8
2 days agoW7N4CalmNW4N4NW5N3NW43N4CalmNW6N7NW4NW8NW9NW8NW9NW11NW9NW11NW7N8NW7

Tide / Current Tables for Suisun Point, Carquinez Strait, California
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Suisun Point
Click for Map
Thu -- 01:07 AM PDT     5.96 feet High Tide
Thu -- 05:50 AM PDT     Sunrise
Thu -- 06:04 AM PDT     Moonrise
Thu -- 08:35 AM PDT     -0.79 feet Low Tide
Thu -- 12:46 PM PDT     New Moon
Thu -- 02:51 PM PDT     4.35 feet High Tide
Thu -- 07:56 PM PDT     1.47 feet Low Tide
Thu -- 08:20 PM PDT     Sunset
Thu -- 08:22 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
5.665.74.93.62.20.9-0.1-0.7-0.7-0.112.33.44.14.343.12.31.71.51.72.63.8

Tide / Current Tables for Carquinez Strait, California Current
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Carquinez Strait
Click for Map
Thu -- 02:48 AM PDT     -0.00 knots Slack
Thu -- 05:50 AM PDT     Sunrise
Thu -- 06:04 AM PDT     Moonrise
Thu -- 06:24 AM PDT     -3.38 knots Max Ebb
Thu -- 10:28 AM PDT     0.01 knots Slack
Thu -- 12:46 PM PDT     New Moon
Thu -- 01:18 PM PDT     2.02 knots Max Flood
Thu -- 04:31 PM PDT     -0.00 knots Slack
Thu -- 07:02 PM PDT     -1.47 knots Max Ebb
Thu -- 08:21 PM PDT     Sunset
Thu -- 08:22 PM PDT     Moonset
Thu -- 09:29 PM PDT     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.82.21.1-0.3-1.7-2.8-3.3-3.3-2.9-2-0.70.71.621.91.40.5-0.5-1.2-1.5-1.3-0.60.72

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 (0,6,7,8)
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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.