Friday, June23, 2017 L-36.com


Marine Weather and Tides
Broadmoor, 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 5:47AMSunset 8:36PM Friday June 23, 2017 12:00 PM PDT (19:00 UTC) Moonrise 4:37AMMoonset 7:17PM 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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PZZ545 Point Reyes To Pigeon Point To 10 Nm- 831 Am Pdt Fri Jun 23 2017
Today..S winds 5 to 15 kt. Wind waves 1 to 3 ft. NW swell 4 to 6 ft at 10 seconds. Patchy fog late in the morning.
Tonight..SW winds 10 kt. Wind waves 3 ft in the evening... Becoming 2 ft or less. NW swell 3 to 4 ft at 10 seconds. Patchy fog after midnight.
Sat..W winds 10 kt. Wind waves 2 ft or less. Mixed swell nw 3 ft at 9 seconds and sw 3 ft at 16 seconds. Patchy fog in the morning.
Sat night..W winds 5 to 15 kt. Wind waves 1 to 3 ft. NW swell 3 ft at 9 seconds.
Sun..NW winds 5 to 15 kt. Wind waves 1 to 3 ft. NW swell 3 ft at 8 seconds. SWell sw 3 ft.
Mon..NW winds 5 to 15 kt. Wind waves 1 to 3 ft. NW swell 3 ft.
Tue..NW winds 10 to 20 kt. Wind waves 2 to 4 ft. NW swell 3 ft.
...san francisco bar/fourfathom bank forecast..... In the deep water channel...combined seas 4 to 6 ft with a dominant swell period of 11 seconds. Across the bar...combined seas 5 to 7 ft with a dominant swell period of 11 seconds. Maximum ebb current of 1 knots at 03:42 pm Friday and 2.2 knots at 03:24 am Saturday.
PZZ500 831 Am Pdt Fri Jun 23 2017
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Generally light southerly winds over the coastal waters today. Onshore winds will be breezy through the golden gate gap and across the northern san francisco bay. Northwest winds return this weekend. Generally decreasing seas through the coming days.

7 Day Forecast for Marine Location Near Broadmoor CDP, CA
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location: 37.74, -122.59     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 231744
afdmtr
area forecast discussion
national weather service san francisco bay area
1044 am pdt Fri jun 23 2017

Synopsis Cooling trend starts today for most areas as onshore
flow returns. The far interior valleys will remain seasonably
warm through this evening. The overall trend this weekend and into
next week will be a return to more seasonable temperatures along
with more extensive night and morning low clouds followed by sunny
afternoons.

Discussion As of 08:20 am pdt Friday... Turn on the ac, the
natural ac that is. Morning visible satellite reveals a more
"summer" like pattern with widespread low clouds and patchy fog.

The latest 24 hour trend indicates much cooler conditions this
morning. For instance, livermore is currently 14 degrees colder
than yesterday at this time. The cooling is likely attributed to
the increase marine layer and a breaking down of the strong high
pressure. The cooler temps can also be found in the hills as well,
but thermal belts are still active with temps in the 70s and low
80s.

For today... Much needed relief for the entire region. Will keep
heat advisories going through this evening as far interior
locations will still exceed 90 degrees despite the cooling trend.

No update planned at this time.

Prev discussion As of 3:34 am pdt Friday...

looking at the 06z NAM graphical and MOS output numbers confidence
is growing that the overall trend this weekend will be continued
cooling back to or even slightly below normal by Sunday afternoon.

In general it looks like a more normal summer time weather
pattern this weekend across the bay area with night and morning
low clouds pulling back to the coast and followed by clear and
warm afternoons.

Latest ECMWF keeps a zonal or slightly cyclonic flow aloft off the
coast for next week implying near normal temperatures with dry
weather forecast. Longer range solutions later next week or
towards the end of the month show more pronounced ridging with
potential for another round of weak offshore flow and associated
warming.

Aviation As of 10:41 am pdt Friday... For 18z tafs. Current
visible satellite shows marine layer mixing out nicely over land,
resulting inVFR at all TAF sites. Marine layer is expected to
remain just offshore through the afternoon, but will likely push
back onshore this evening and overnight. Generally light onshore
winds today, except breezy onshore winds through coastal gaps and
valleys, including near ksfo, by this afternoon and evening.

Forecast confidence: moderate
vicinity of ksfo... CurrentlyVFR. Ifr CIGS expected to return
overnight tonight, sometime around 10z at ksfo, and sooner for
koak. Breezy afternoon winds this afternoon, around 15-20 kt.

Sfo bridge approach... Lifr-ifr CIGS expected around 08-09z over
the approach.

Monterey bay terminals...VFR through the afternoon, with early
return of stratus this evening, around 02-03z. Early morning
lifr CIGS and fog possible before sunrise. Generally light winds
this afternoon, occasionally breezy.

Marine As of 10:23 am pdt Friday... Generally light southerly
winds over the coastal waters today. Onshore winds will be breezy
through the golden gate gap and across the northern san francisco
bay. Northwest winds return this weekend. Generally decreasing
seas through the coming days.

Mtr watches warnings advisories
Tday Heat advisory... Caz510-511-517-518
sca... Sf bay
public forecast: mm rww
aviation: bam
marine: bam
visit us at

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46237 - San Francisco Bar, CA (142) 4 mi60 min 56°F5 ft
FTPC1 - 9414290 - San Francisco, CA 8 mi48 min WSW 2.9 G 13 57°F 58°F1013.9 hPa
PXOC1 - 9414311 - San Francisco (Pier 1), CA 11 mi48 min W 13 G 18 62°F 1012.3 hPa
PXSC1 11 mi48 min 63°F 55°F
TIBC1 - Tiburon Pier, San Francisco Bay, CA 13 mi48 min 62°F 1013 hPa
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 13 mi70 min SE 5.8 G 7.8 55°F 55°F5 ft1013.7 hPa (+0.8)
OKXC1 - 9414776 - Oakland (Berth 34), CA 14 mi48 min WNW 9.9 G 12 60°F 1013.3 hPa
OBXC1 14 mi48 min 61°F 56°F
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 14 mi54 min W 11 G 12
RCMC1 - 9414863 - Richmond, CA 16 mi54 min SSW 5.1 G 8 62°F 63°F1013 hPa
AAMC1 - 9414750 - Alameda, CA 16 mi48 min W 6 G 8.9 65°F 67°F1013.6 hPa
LNDC1 17 mi54 min NNW 5.1 G 8 64°F 1013.1 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 17 mi102 min SSW 9.9 G 13 60°F 1013.4 hPa
RTYC1 - 9414523 - Redwood City, CA 26 mi48 min N 6 G 8 65°F 74°F1012.4 hPa
PRYC1 - 9415020 - Point Reyes, CA 27 mi48 min SE 8.9 G 11 59°F 57°F1013.4 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 28 mi48 min SW 12 G 14 66°F 1012.4 hPa
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA 30 mi70 min SSE 7.8 G 12 55°F 54°F6 ft1013 hPa (+0.9)
UPBC1 32 mi54 min WNW 18 G 20
MZXC1 - 9415102 - Martinez-Amorco CA 32 mi48 min WNW 17 G 19 69°F 72°F1012.2 hPa61°F
PCOC1 - 9415144 - Port Chicago, CA 36 mi48 min W 20 G 22 69°F 72°F1011.5 hPa
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 43 mi48 min NW 18 G 21 72°F 1010.6 hPa
SFXC1 - San Francisco Bay Reserve, CA 44 mi75 min W 12 73°F 1011 hPa62°F
46214 - Point Reyes, CA (029) 49 mi60 min 53°F8 ft

Wind History for San Francisco, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
San Francisco, San Francisco International Airport, CA15 mi64 minNNE 910.00 miFair67°F57°F71%1012.7 hPa
Oakland, Metro Oakland International Airport, CA20 mi67 minWNW 1110.00 miA Few Clouds71°F57°F61%1012.9 hPa
San Carlos Airport, CA23 mi73 minN 1010.00 miClear68°F60°F78%1012.9 hPa

Wind History from SFO (wind in knots)
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Last 24hrN7NW11NW15W16W17NW18NW14NW18W17W15W11W11W7W5NW4W5W3W4NW4CalmNE3NE3NE6N9
1 day agoNE6N7NW15NW16NW16NW18NW14NW14W14W10W8W10W10W7NW6W5W5W9NW5CalmNW3N4N5NE5
2 days agoNW14NW13NW20W20W20W25W18W21
G26
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W16W19W12W11NW9W7W5NW9W8W5NW4NW5N4NE7NE6

Tide / Current Tables for San Francisco Bar, California
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San Francisco Bar
Click for Map
Fri -- 05:01 AM PDT     -1.51 feet Low Tide
Fri -- 05:37 AM PDT     Moonrise
Fri -- 05:49 AM PDT     Sunrise
Fri -- 12:07 PM PDT     4.72 feet High Tide
Fri -- 04:45 PM PDT     2.19 feet Low Tide
Fri -- 07:32 PM PDT     New Moon
Fri -- 08:16 PM PDT     Moonset
Fri -- 08:36 PM PDT     Sunset
Fri -- 10:57 PM PDT     6.79 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
5.43.81.80.1-1.1-1.5-1.2-0.30.82.13.44.34.74.53.832.32.22.63.54.65.76.56.8

Tide / Current Tables for South Channel, San Francisco Bay Approach, California Current
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South Channel
Click for Map
Fri -- 02:46 AM PDT     -2.38 knots Max Ebb
Fri -- 05:37 AM PDT     Moonrise
Fri -- 05:49 AM PDT     Sunrise
Fri -- 06:21 AM PDT     0.01 knots Slack
Fri -- 09:26 AM PDT     1.89 knots Max Flood
Fri -- 01:11 PM PDT     -0.00 knots Slack
Fri -- 03:22 PM PDT     -1.21 knots Max Ebb
Fri -- 06:12 PM PDT     0.00 knots Slack
Fri -- 07:32 PM PDT     New Moon
Fri -- 08:16 PM PDT     Moonset
Fri -- 08:35 PM PDT     Sunset
Fri -- 09:08 PM PDT     1.43 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.4-1.5-2.2-2.4-2-1.3-0.40.61.41.81.81.50.90.2-0.7-1.2-1.1-0.7-0.10.51.11.41.30.9

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 (15,3,4,5)
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Ground Weather Radar Station San Francisco Bay Area, 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.