Friday, July21, 2017 L-36.com


Marine Weather and Tides
Bloomfield, 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 6:02AMSunset 8:31PM Thursday July 20, 2017 9:31 PM PDT (04:31 UTC) Moonrise 2:22AMMoonset 4:59PM Illumination 7% Phase: Waning Crescent; Moon at 27 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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PZZ540 Point Arena To Point Reyes To 10 Nm- 858 Pm Pdt Thu Jul 20 2017
.small craft advisory in effect through Friday evening...
Tonight..NW winds 20 to 30 kt. Wind waves 4 to 6 ft. NW swell 5 to 7 ft at 7 seconds. Patchy fog after midnight. Patchy drizzle after midnight.
Fri..NW winds 20 to 30 kt. Wind waves 4 to 6 ft. NW swell 5 to 7 ft at 8 seconds. Patchy fog in the morning. Patchy drizzle in the morning.
Fri night..NW winds 20 to 30 kt. Wind waves 4 to 6 ft. NW swell 5 to 6 ft at 8 seconds. Patchy fog after midnight. Patchy drizzle after midnight.
Sat..NW winds 15 to 25 kt. Wind waves 3 to 5 ft. NW swell 5 to 7 ft at 8 seconds. Patchy fog in the morning. Patchy drizzle in the morning.
Sat night..NW winds 5 to 15 kt. Wind waves 1 to 3 ft. NW swell 6 to 7 ft at 8 seconds. Patchy fog after midnight. Patchy drizzle after midnight.
Sun..SW winds 5 to 15 kt. Wind waves 1 to 3 ft. NW swell 6 to 8 ft. Patchy fog.
Mon..SW winds 10 kt. Wind waves 2 ft or less. NW swell 5 to 7 ft. Patchy fog.
Tue..W winds 15 to 25 kt. Wind waves 3 to 5 ft. Mixed swell nw 4 to 6 ft and S 3 ft. Patchy fog.
PZZ500 858 Pm Pdt Thu Jul 20 2017
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... High pressure off the california coast will weaken on Saturday. Winds will continue to be gusty before decreasing on Saturday.

7 Day Forecast for Marine Location Near Bloomfield, CA
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location: 38.36, -122.86     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 210356
afdmtr
area forecast discussion
national weather service san francisco bay area
856 pm pdt Thu jul 20 2017

Synopsis A building ridge of high pressure will lead to warmer
temperatures into the weekend. Cooling is then expected early next
week.

Discussion As of 8:55 pm pdt Thursday... Today was a day much
like yesterday with afternoon highs close to seasonal averages,
except slightly warmer than normal temperatures in the north bay
valleys.

An upper level ridge, currently centered over the southern great
plains and four corners area, is forecast to build westward and
across california over the next few days. This will result in
warming of the airmass over our region and compression of the
marine layer. In addition, onshore flow is projected to weaken by
the weekend. The result will be a warming trend tomorrow and
Saturday with temperatures in the inland valleys and hills warming
into the 90s by Saturday. Temperatures are expected to peak on
Saturday and then cool back a bit on Sunday. Although inland areas
will be very warm over the weekend, only moderate heat risks are
anticipated instead of the high heat risk that inland areas
were subjected to last weekend.

Night and morning low clouds and fog are expected to be rather
patchy through the weekend, and primarily confined to coastal
areas.

The upper ridge is forecast to retreat back to the east early next
week while a weak upper trough develops along the california
coast. This will result in cooler temperatures during the work
week, along with more widespread night and morning low clouds and
fog.

Aviation As of 4:30 pm pdt Thursday. The marine layer has
deepened to around 1500 feet today but will start to compress
tonight as the upper trough over the pacnw lifts NE and the upper
high builds back over the southwest. Strong n-s gradients will
also make it difficult for stratus to spread inland. Expecting
stratus to spread through the golden gate and san bruno gap into
oak and sfo after 09z but remainingVFR in sjc sts and lvk.

Vicinity of ksfo...VFR through the airport evening rush. CIGS into
the sfo-oak vicinity after 09z. West winds gusting to 26-28 kt
through 06z.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals... Clouds over southern mry bay are
dissipating. CIGS have been in at mry most of the day but is
expected to clear out by 02z. So there may be a period ofVFR
conditions before ifr MVFR ceilings return after 06z.

Marine As of 4:30 pm pdt Thursday... High pressure over the
eastern pacific will allow for breezy northwest winds to persist
over the waters. These winds will produce local wind waves with
areas of rough chop. The winds are expected to continue into the
weekend, especially for the northern outer waters.

Mtr watches warnings advisories
Tngt Sca... Mry bay until 9 pm
sca... Pigeon pt to pt pinos 0-10 nm until 9 pm
sca... Pt arena to pt reyes 0-10 nm
sca... Pt reyes to pigeon pt 0-10 nm
sca... Pt pinos to pt piedras blancas 0-10 nm
sca... Pt arena to pigeon pt 10-60 nm
sca... Pigeon pt to pt piedras blancas 10-60 nm
public forecast: dykema
aviation: W pi
marine: rowe
visit us at

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46013 - Bodega Bay - 48NM North Northwest of San Francisco, CA 25 mi42 min WNW 27 G 33 55°F 50°F7 ft1016.1 hPa52°F
PRYC1 - 9415020 - Point Reyes, CA 26 mi44 min WNW 17 G 23 59°F 54°F1016 hPa
RCMC1 - 9414863 - Richmond, CA 38 mi44 min SSE 14 G 16 59°F 64°F1015.1 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 38 mi44 min WSW 8.9 G 11 68°F 1014.2 hPa
TIBC1 - Tiburon Pier, San Francisco Bay, CA 39 mi55 min Calm 64°F 1015 hPa
46237 - San Francisco Bar, CA (142) 41 mi62 min 53°F6 ft
PPXC1 - 9414847 - Richmond (Point Potrero), CA 41 mi44 min S 12 G 15 62°F 1015.7 hPa
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 42 mi42 min NW 19 G 23 55°F 51°F7 ft1015.9 hPa (-0.0)
46214 - Point Reyes, CA (029) 43 mi62 min 52°F8 ft
FTPC1 - 9414290 - San Francisco, CA 44 mi44 min WSW 14 G 20 56°F 57°F1015.6 hPa
MZXC1 - 9415102 - Martinez-Amorco CA 45 mi44 min W 9.9 G 12 73°F 71°F1014.4 hPa51°F
PXOC1 - 9414311 - San Francisco (Pier 1), CA 46 mi44 min ENE 1 G 2.9 60°F 1014.7 hPa
PXSC1 46 mi44 min 61°F 52°F
SFXC1 - San Francisco Bay Reserve, CA 46 mi107 min W 8.9 74°F 1013 hPa53°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 47 mi44 min SW 8 G 11 61°F 1015.6 hPa
OBXC1 47 mi44 min 60°F 54°F
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 48 mi44 min WSW 12 G 13
PCOC1 - 9415144 - Port Chicago, CA 48 mi44 min SSW 7 G 12 68°F 73°F1014 hPa

Wind History for Point Reyes, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Santa Rosa, Santa Rosa Sonoma County Airport, CA11 mi39 minS 610.00 miFair69°F51°F53%1013.3 hPa
Petaluma Municipal Airport, CA15 mi37 minWSW 49.00 miFair63°F50°F64%1015.2 hPa
Novato / Gnoss Field, CA22 mi57 minSSW 510.00 miFair66°F50°F56%1014.6 hPa

Wind History from STS (wind in knots)
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Last 24hrS4S3S4SE3CalmCalmCalmCalmCalmCalmCalmCalm346SW4S8S10SE11S11SE9SE9S7S6
1 day agoS3S3S3CalmCalmCalmCalmCalmCalmCalmCalmS3Calm45--S9S9SE13SE11SE10S10S6S6
2 days agoS6S5S4S4SE5--S5S3E4S4CalmCalmS5S7SE6S8SE10S8S11SE10S10S9S7S6

Tide / Current Tables for Bodega Harbor entrance, California
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Bodega Harbor entrance
Click for Map
Fri -- 04:13 AM PDT     -0.86 feet Low Tide
Fri -- 04:19 AM PDT     Moonrise
Fri -- 06:05 AM PDT     Sunrise
Fri -- 11:01 AM PDT     4.64 feet High Tide
Fri -- 03:54 PM PDT     2.47 feet Low Tide
Fri -- 07:02 PM PDT     Moonset
Fri -- 08:31 PM PDT     Sunset
Fri -- 09:51 PM PDT     6.81 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.92.20.7-0.4-0.8-0.701.12.33.44.34.64.43.93.22.62.52.83.74.75.86.66.86.4

Tide / Current Tables for Tomales Bay entrance, California
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Tomales Bay Entrance
Click for Map
Fri -- 04:19 AM PDT     Moonrise
Fri -- 04:50 AM PDT     -1.08 feet Low Tide
Fri -- 06:05 AM PDT     Sunrise
Fri -- 11:22 AM PDT     3.88 feet High Tide
Fri -- 04:12 PM PDT     2.03 feet Low Tide
Fri -- 07:02 PM PDT     Moonset
Fri -- 08:30 PM PDT     Sunset
Fri -- 10:17 PM PDT     6.21 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.22.71.2-0-0.9-1.1-0.70.31.52.63.43.83.83.42.82.322.22.83.74.85.76.26

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 (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.