Saturday, August18, 2018 L-36.com


Marine Weather and Tides
El Granada, CA

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7/21/2018 Trying to make page Mobile Friendly

Sunrise 6:27AMSunset 7:59PM Saturday August 18, 2018 9:30 AM PDT (16:30 UTC) Moonrise 1:18PMMoonset 11:51PM Illumination 47% Phase: First Quarter Moon; Moon at 7 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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PZZ545 Point Reyes To Pigeon Point To 10 Nm- 809 Am Pdt Sat Aug 18 2018
Today..W winds up to 10 kt. Wind waves 2 ft or less. Mixed swell nw 3 to 4 ft at 8 seconds and S around 3 ft at 15 seconds. Patchy fog this morning.
Tonight..W winds up to 10 kt. Wind waves around 3 ft. Mixed swell nw 3 to 4 ft at 8 seconds and S around 3 ft at 14 seconds. Patchy fog.
Sun..SW winds up to 10 kt. Wind waves around 3 ft. Mixed swell nw 3 to 4 ft at 8 seconds and S around 3 ft at 14 seconds. Patchy fog.
Sun night..W winds 5 to 15 kt. Wind waves 3 to 4 ft. Mixed swell nw 3 to 5 ft at 8 seconds and S around 3 ft at 14 seconds. Patchy fog.
Mon..W winds 5 to 15 kt. Wind waves 3 to 4 ft. NW swell 3 to 5 ft at 8 seconds. Patchy fog.
Mon night..W winds 5 to 10 kt. Wind waves around 3 ft. NW swell around 4 ft at 8 seconds. Patchy fog.
Tue..W winds up to 10 kt. Wind waves 2 ft or less. NW swell around 3 ft. Patchy fog.
Wed..W winds up to 10 kt. Wind waves 2 ft or less. NW swell 3 to 4 ft. Patchy fog.
...san francisco bar/fourfathom bank forecast..... In the deep water channel...combined seas 2 to 4 ft with a dominant period of 17 seconds. Across the bar...combined seas 3 to 5 ft with a dominant period of 17 seconds. Maximum ebb current of 1.6 knots at 10:07 am Saturday and 2.2 knots at 10:19 pm Saturday.
PZZ500 809 Am Pdt Sat Aug 18 2018
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... High pressure persists over the eastern pacific with a thermal trough over inland california. Northwesterly winds will remain generally light through the week aside from locally gusty winds in the northern outer waters through Tuesday as the trough over california strengthens. Light to moderate mixed swell will continue along with a longer period southerly swell.


7 Day Forecast for Marine Location Near El Granada, CA
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location: 37.5, -122.48     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 181543
afdmtr
area forecast discussion
national weather service san francisco bay area
843 am pdt Sat aug 18 2018

Synopsis Very warm to hot conditions will persist inland
through the weekend. A persistent but shallow marine layer and
light onshore flow will maintain mild conditions at the coast.

Cooling is then forecast during the early part of next week.

Discussion As of 8:45 am pdt Saturday... A 596dm 500mb high
pressure ridge remains over the region this morning, contributing
to a compressed marine layer near the coast and mostly clear skies
elsewhere. Very little day to day change is expected for today
versus yesterday. That said, the weather pattern is forecast to
shift soon. An approaching trough will settle into oregon norcal
by late tonight through early next week, which is expected to
flatten and thus weaken the ridge currently in place. This will
ease the suppression of the marine layer, allowing it to deepen,
and set temperatures on a slight cooling trend. Temperatures will
be their lowest on Tuesday, with afternoon temperatures 3 to 8
degrees cooler than normal nearly everywhere except the most
extreme inland locations, which may continue to run near to
slightly above normal. This translates to mid to upper 60s along
the coast and sf bay shoreline, with 70s to low 80s just inland,
to mid 80s to low 90s for extreme inland locations.

Previous discussion As of 3:19 am pdt Saturday... The marine
layer has compressed to around 1000 feet, per the latest fort ord
profiler output, and satellite imagery confirms with only limited
inland extent to the coastal stratus so far. The most appears to
be into the salinas valley, with monterey and salinas airports
both indicating visibility restrictions due to fog. The san
francisco bay area appears to be less impacted with no ceilings
currently being reported at bay area airports. With a high
pressure ridge still in place over the state, expect warmer
temperatures across the district but mostly across inland areas.

Highs today are forecast to range from 60s to mid 70s near the
coast, and 80s and 90s inland. Warmest inland spots could easily
exceed the century mark.

Warm hot temperatures will persist through Sunday as the ridge
will remain in effect. Cooler temperatures are anticipated by
early next week, though, as an upper level trough displaces the
ridge over the west. Inland temperatures could be as many as 10
degrees cooler compared to weekend temperatures, however, coastal
temps should see less change. Medium range models keep a baggy
trough over the west through the remainder of the forecast period
maintaining the moderate temps.

Aviation As of 4:45 am pdt Saturday... Marine layer has
compressed as upper level ridge has built over the area. Stratus
extends along the coast but has made little inland progress.

Local stratus is possible at oak butVFR is expected for the sfo
approach.

Vicinity of ksfo...VFR. West winds 16-18 kt after 21z.

Sfo bridge approach...VFR.

Monterey bay terminals... Ifr CIGS with local vsbys down to 1 2
mile through 15z. BecomingVFR after 17z at sns and 18z at mry.

Marine As of 08:23 am pdt Saturday... High pressure persists
over the eastern pacific with a thermal trough over inland
california. Northwesterly winds will remain generally light
through the week aside from locally gusty winds in the northern
outer waters through Tuesday as the trough over california
strengthens. Light to moderate mixed swell will continue along
with a longer period southerly swell.

Mtr watches warnings advisories
Tday Sca... Pt arena to pigeon pt 10-60 nm from 5 pm
public forecast: drp
aviation: W pi
marine: W pi
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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
RTYC1 - 9414523 - Redwood City, CA 14 mi30 min NW 1 G 2.9 62°F 72°F1018.5 hPa (+0.8)
PXOC1 - 9414311 - San Francisco (Pier 1), CA 21 mi30 min NNE 1.9 G 2.9 58°F 1017.2 hPa (+1.0)
FTPC1 - 9414290 - San Francisco, CA 21 mi36 min WSW 5.1 G 9.9 53°F 60°F1018.6 hPa
AAMC1 - 9414750 - Alameda, CA 21 mi36 min W 2.9 G 2.9 59°F 68°F1018.3 hPa
PXSC1 21 mi30 min 60°F 56°F
OBXC1 22 mi30 min 58°F 55°F
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 22 mi30 min W 1.9 G 2.9
LNDC1 23 mi30 min WSW 1.9 G 2.9 60°F 1018 hPa (+0.8)
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA 23 mi40 min S 3.9 G 5.8 56°F 60°F6 ft1018.4 hPa (+0.9)
OKXC1 - 9414776 - Oakland (Berth 34), CA 23 mi30 min NW 1.9 G 2.9 58°F 1018.1 hPa (+0.8)
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 26 mi20 min S 5.8 G 9.7 54°F 58°F1019.1 hPa
TIBC1 - Tiburon Pier, San Francisco Bay, CA 27 mi25 min N 2.9 60°F 1018 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 29 mi30 min SSW 7 G 9.9 57°F 1018.5 hPa (+1.1)
RCMC1 - 9414863 - Richmond, CA 29 mi30 min 64°F
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 40 mi36 min WNW 5.1 G 7 59°F 1017.8 hPa
MZXC1 - 9415102 - Martinez-Amorco CA 41 mi30 min WNW 17 G 19 60°F 68°F1017.4 hPa (+0.8)60°F
PRYC1 - 9415020 - Point Reyes, CA 43 mi30 min E 2.9 G 5.1 55°F1018.1 hPa (+1.0)
PCOC1 - 9415144 - Port Chicago, CA 45 mi30 min W 11 G 13 64°F 69°F1017.3 hPa (+1.1)
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 49 mi30 min NW 11 G 15 66°F 1016.6 hPa (+1.4)

Wind History for Redwood City, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Half Moon Bay Airport, CA1 mi35 minS 60.15 miFog52°F51°F100%1019 hPa
San Francisco, San Francisco International Airport, CA10 mi34 minN 010.00 miA Few Clouds61°F53°F75%1017.9 hPa
San Carlos Airport, CA12 mi43 minN 010.00 miClear63°F57°F83%1017.9 hPa
Palo Alto Airport, CA19 mi1.7 hrsN 08.00 miClear61°F57°F88%1018.3 hPa
Oakland, Metro Oakland International Airport, CA20 mi37 minN 010.00 miFair61°F55°F84%1018 hPa
Hayward, Hayward Air Terminal, CA22 mi36 minN 06.00 miFair with Haze65°F53°F66%1018.8 hPa
Mountain View, Moffett Field, CA23 mi94 minN 08.00 miFair61°F57°F90%1018.3 hPa

Wind History from HAF (wind in knots)
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Last 24hrW6NW8W8NW8W9W7NW9NW7NW7W4Calm--SW3CalmSE3SW3CalmE4E4E3SE4SE3S3S7
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N10N8NW7NW9N7NW6NW5NW5N3N3N3N4N5CalmW5
2 days agoW4W4W6W5W8NW9W8NW9NW9NW9NW6NW5NW7N10N5NW7N3N5NW4NW3NW3N4NW6N6

Tide / Current Tables for Princeton, Half Moon Bay, California
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Princeton
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Sat -- 12:13 AM PDT     Moonset
Sat -- 12:49 AM PDT     First Quarter
Sat -- 05:34 AM PDT     3.87 feet High Tide
Sat -- 06:28 AM PDT     Sunrise
Sat -- 10:56 AM PDT     2.28 feet Low Tide
Sat -- 02:17 PM PDT     Moonrise
Sat -- 05:13 PM PDT     5.46 feet High Tide
Sat -- 07:58 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.21.62.22.93.53.83.83.63.22.72.42.32.533.74.55.15.45.34.83.92.91.91.2

Tide / Current Tables for San Mateo Bridge, South San Francisco Bay, California Current
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San Mateo Bridge
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Sat -- 12:12 AM PDT     Moonset
Sat -- 12:49 AM PDT     First Quarter
Sat -- 02:08 AM PDT     0.01 knots Slack
Sat -- 04:53 AM PDT     1.22 knots Max Flood
Sat -- 06:27 AM PDT     Sunrise
Sat -- 08:14 AM PDT     -0.01 knots Slack
Sat -- 10:51 AM PDT     -0.78 knots Max Ebb
Sat -- 02:02 PM PDT     0.00 knots Slack
Sat -- 02:16 PM PDT     Moonrise
Sat -- 04:45 PM PDT     1.08 knots Max Flood
Sat -- 07:57 PM PDT     Sunset
Sat -- 08:01 PM PDT     -0.00 knots Slack
Sat -- 11:25 PM PDT     -1.33 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-1.1-0.7-0.10.61.11.21.10.70.2-0.4-0.7-0.8-0.6-0.4-00.611.10.90.60-0.6-1.1-1.3

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.
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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for San Francisco/Monterey Bay Area, CA (12,3,4,5)
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Ground Weather Radar Station San Francisco Bay Area, 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.