Thursday, October19, 2017 L-36.com


Marine Weather and Tides
Richmond, 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 7:21AMSunset 6:26PM Thursday October 19, 2017 2:40 PM PDT (21:40 UTC) Moonrise 6:08AMMoonset 5:50PM 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- 216 Pm Pdt Thu Oct 19 2017
.small craft advisory in effect from 9 pm pdt this evening through late tonight...
Tonight..W winds 15 to 25 kt. Chance of rain in the evening, then chance of showers after midnight.
Fri..W winds 10 to 20 kt.
Fri night..W winds 10 to 20 kt.
Sat..W winds 5 to 15 kt.
Sat night..NW winds 5 to 15 kt.
Sun..W winds 5 to 15 kt.
Mon..N winds 5 kt.
Tue..N winds 10 kt.
PZZ500 216 Pm Pdt Thu Oct 19 2017
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... A cold front will pass over the region later this evening, bringing the first rain of the wet season, a wind shift, and small craft criteria winds to the waters, with occasional gusts up to or exceeding 30 mph. A very robust northwest, long period, large swell train will arrive late this afternoon and through the evening, generating large waves and hazardous seas through at least Saturday. Operators of small crafts are urged to use extreme caution if out at sea over the next several days.

7 Day Forecast for Marine Location Near Richmond, CA
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location: 37.91, -122.38     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 192052
afdmtr
area forecast discussion
national weather service san francisco bay area
152 pm pdt Thu oct 19 2017

Synopsis A cold front is still expected to move through the
area later today and tonight bringing widespread rainfall to the
region. The bulk of the rain will be in the north bay mountains
and coastal ranges. Along with precipitation, expect cooler
temperatures and breezy onshore winds through Friday. By late
Friday morning dry conditions will return lasting through the
forecast period. A warming trend is then on the way over the
weekend and into early next week. Temperatures are predicted to be
well above average during the beginning of next week.

Discussion As of 1:52 pm pdt Thursday... Current satellite
imagery showing parts of the bay area still under this morning's
stratus deck as the marine layer remains around 1500 ft. The
approaching cold front can also be seen on the satellite as it
nears the northern california coast. Rainfall is expected to reach
the sonoma and marin county coastal areas later this afternoon
before becoming more widespread late this evening and eventually
covering the remainder of the CWA by around midnight. Rainfall is
expected to be out of the san francisco bay area by tomorrow
morning's commute. Along with precipitation breezy southwesterly
winds will accompany the frontal passage.

Forecast rainfall totals have been updated to increase the amount
of precipitation for the north bay mountains. Latest model runs
indicate the north bay mountains could receive around 0.75" with
locally higher amounts possible in parts of sonoma county.

Otherwise, little changes have been made for the north bay
valleys. The santa cruz and santa lucia mountains are expected to
receive around 0.25" with less than two tenths of an inch
expected for most valley locations. Some areas in the southern and
far eastern portions of the CWA may see little to no rain. Cool
and breezy conditions are expected for the rest of the day Friday
after the precipitation has ended.

A warming trend is on tap for the weekend as an upper level ridge
starts to build over california. The ridge is expected to
strengthen as we head into the beginning of next week. 850 mb
temperatures are forecast to approach 25 degrees celsius through
mid week flirting with maximum climatological values for this
area. The ridge along with light offshore flow will result in warm
and dry conditions across the area Monday and Tuesday. Widespread
highs in the 80s and low to mid 90s are expected. Slight cooling
is possible on Wednesday for coastal areas, but warm conditions
will continue inland.

Aviation As of 11:15 am pdt Thursday... For 18z tafs. Mixed
ceilings with some lingering overnight stratus now mixing out and
some mid level clouds above obscuring the view on satellite.

Ceilings are ranging from ifr toVFR conditions around the region
and are anticipated to gradually improve through the late morning
into early afternoon, but deteriorate later today ahead of the
arrival of a cold frontal system. Winds will shift and become
breezy to occasionally gusty, especially over the north bay and
near ksfo koak as the FROPA occurs. Local WRF skew-t momentum
transfer indicates localized gusts up to around 30 knots will be
possible with the FROPA as winds mix down from above. Some
nocturnal decoupling with these winds aloft could also bring
localized low level wind shear, especially to ksfo ksts and kapc
as frontal passage occurs. Llws not yet added to tafs but will be
looked at closer with next issuance. Rain will primarily being
between 01z in the north bay and closer to 04-06z for the south
bay monterey bay. The heaviest amounts will be over the coastal
ranges and north bay hills and mountains, with lighter amounts
farther southward and inland. Rains will be sufficient to wet
runways. Ceilings will generally be borderline MVFR toVFR by
tomorrow morning in the wake of the front.

Overall forecast confidence: moderate
vicinity of ksfo... MVFR thru late morning becomingVFR until
around 03z where borderline MVFR CIGS return with fropa.

Breezy west winds 15 to 20 mph with gusts 25 to 30 mph possible
with fropa. Rain will wet runways but taper off but sunrise. Llws
a possibility with FROPA (light at surface gusting to 25-30mph at
2000ft agl). CIGS improving by sunrise fri.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals... Mixed ceilings, bouncing between ifr and
vfr through the morning, low confidence. Ceilings will deteriorate
by mid to late afternoon and drop firmly into the ifr band ahead
of fropa. Light onshore winds and light rain will accompany fropa.

Llws not a concern this far south from base of trough. Cigs
improving by sunrise fri.

Fire weather As of 3:43 am pdt Thursday... Relative humidity
recoveries have improved this morning with even most hilltop areas
seeing 80-100% values. Onshore winds will continue to gradually
increase today and moderate and locally gusty winds are expected.

Models continue to move an early season cold front through the
district late today and tonight. Rainfall will begin in the north
bay this afternoon and spread across most of the remainder of the
district tonight. The models have just recently trended slightly
wetter with this system, although rainfall amounts are still
expected to be mostly light. Wetting rains are most likely in the
north bay mountains and perhaps locally in the santa cruz
mountains. Rainfall should end in most areas by Friday morning.

Friday will be a cool day with brisk northwest winds.

A warming trend will begin over the upcoming weekend as a high
pressure ridge begins to build over california. This ridge will
strengthen into early next week and result in warm and dry
conditions districtwide from Monday through Wednesday. Will need
to be wary of possible gusty offshore winds in the hills by Sunday
night and especially Monday night.

Marine As of 2:47 am pdt Thursday... A cold front is forecast
to pass through the region later this evening. Winds will increase
along and just behind the front, occasionally gusting around 25
knots at times. Showers will be possible ahead of and along the
cold front, as well. A very robust northwest, long period swell
will arrive late this afternoon and through the evening,
generating large waves and hazardous seas through at least
Saturday. Operators of small crafts are urged to use extreme
caution if out at sea over the next several days.

Mtr watches warnings advisories
Tday Sca... Pt arena to pigeon pt 10-60 nm from 5 pm
public forecast: as
aviation: drp
marine: drp
fire weather: sims
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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PPXC1 - 9414847 - Richmond (Point Potrero), CA 1 mi41 min SW 8 G 11 60°F 1014.8 hPa
RCMC1 - 9414863 - Richmond, CA 2 mi41 min SSW 5.1 G 8 59°F 59°F1014.4 hPa (-1.2)
TIBC1 - Tiburon Pier, San Francisco Bay, CA 4 mi49 min W 5.1 58°F 1014 hPa (-2.0)
PXSC1 7 mi41 min 62°F 55°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 7 mi41 min W 4.1 G 7 61°F 1014.4 hPa (-1.4)
OBXC1 8 mi41 min 60°F 55°F
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 8 mi41 min SW 6 G 9.9
PXOC1 - 9414311 - San Francisco (Pier 1), CA 8 mi143 min WSW 5.1 G 8 60°F 1014.8 hPa
FTPC1 - 9414290 - San Francisco, CA 9 mi41 min SW 11 G 16 60°F 57°F1014.8 hPa (-1.3)
AAMC1 - 9414750 - Alameda, CA 10 mi41 min WSW 4.1 G 8 61°F 62°F1015 hPa (-1.4)
LNDC1 10 mi41 min WSW 7 G 9.9 61°F 1014.5 hPa (-1.3)
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 12 mi41 min SW 13 G 16 60°F 1013.7 hPa
46237 - San Francisco Bar, CA (142) 16 mi41 min 55°F4 ft
MZXC1 - 9415102 - Martinez-Amorco CA 16 mi41 min SW 12 G 17 62°F 63°F1014.1 hPa (-1.4)56°F
PCOC1 - 9415144 - Port Chicago, CA 21 mi41 min W 12 G 16 63°F 63°F1013.6 hPa (-1.5)
SFXC1 - San Francisco Bay Reserve, CA 27 mi56 min W 11 64°F 1013 hPa55°F
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 27 mi51 min S 7.8 G 9.7 54°F 55°F4 ft1014.9 hPa (-0.8)
RTYC1 - 9414523 - Redwood City, CA 29 mi41 min WSW 12 G 15 63°F 65°F1014.2 hPa (-1.4)
PRYC1 - 9415020 - Point Reyes, CA 32 mi41 min E 7 G 11 55°F1014.1 hPa (-1.4)
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA 46 mi51 min SSE 7.8 G 9.7 57°F 58°F5 ft1014.6 hPa (-1.1)

Wind History for Point Potrero Richmond, CA
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Oakland, Metro Oakland International Airport, CA17 mi48 minW 910.00 miMostly Cloudy63°F55°F76%1014.9 hPa
Concord, Buchanan Field, CA18 mi48 minW 1310.00 miOvercast68°F52°F57%1012.5 hPa
Novato / Gnoss Field, CA19 mi46 minSW 10 G 1610.00 miOvercast66°F53°F64%1014.2 hPa
San Francisco, San Francisco International Airport, CA20 mi45 minWSW 13 G 1810.00 miMostly Cloudy65°F52°F63%1014.4 hPa
Napa, Napa County Airport, CA21 mi47 minSSW 1810.00 miSmoke and Breezy62°F54°F75%1012.7 hPa
Hayward, Hayward Air Terminal, CA22 mi47 minWNW 810.00 miMostly Cloudy64°F51°F63%1015.8 hPa

Wind History from OAK (wind in knots)
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Last 24hrW13W14W18W11W8NW4W7SW5W10W7W8W9W14W10W8SW4W8W6W6SW5SW5SW5W8W9
1 day agoW6W8NW7NW8NW7W9CalmW3NW8NW5W10NW4N3N3N3NE5N3NE3CalmW43SW5W3W11
2 days agoW7NW9NW6NW9NW4CalmCalmCalmCalmNE3NE3CalmNE3CalmE3CalmNE3CalmCalmCalmS5W5W3SW6

Tide / Current Tables for Richmond Inner Harbor, San Francisco Bay, California
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Richmond Inner Harbor
Click for Map
Thu -- 12:20 AM PDT     5.51 feet High Tide
Thu -- 06:04 AM PDT     1.12 feet Low Tide
Thu -- 07:07 AM PDT     Moonrise
Thu -- 07:22 AM PDT     Sunrise
Thu -- 12:12 PM PDT     New Moon
Thu -- 12:24 PM PDT     6.15 feet High Tide
Thu -- 06:25 PM PDT     Sunset
Thu -- 06:41 PM PDT     0.22 feet Low Tide
Thu -- 06:50 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
5.55.44.73.52.41.51.11.42.23.34.55.56.165.342.51.20.40.30.81.72.94

Tide / Current Tables for Point Richmond .5 mi W, San Francisco Bay, California Current
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Point Richmond .5 mi W
Click for Map
Thu -- 01:54 AM PDT     -0.01 knots Slack
Thu -- 04:22 AM PDT     -1.05 knots Max Ebb
Thu -- 07:08 AM PDT     Moonrise
Thu -- 07:22 AM PDT     Sunrise
Thu -- 07:30 AM PDT     0.00 knots Slack
Thu -- 10:57 AM PDT     1.02 knots Max Flood
Thu -- 12:12 PM PDT     New Moon
Thu -- 01:55 PM PDT     -0.01 knots Slack
Thu -- 04:38 PM PDT     -1.28 knots Max Ebb
Thu -- 06:26 PM PDT     Sunset
Thu -- 06:50 PM PDT     Moonset
Thu -- 07:59 PM PDT     0.00 knots Slack
Thu -- 11:32 PM PDT     1.11 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.90.5-0.1-0.7-1-1-0.8-0.30.20.70.910.90.5-0.1-0.8-1.2-1.3-1-0.600.50.91.1

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 San Francisco/Monterey Bay Area, CA (17,4,5,8)
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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.