Tuesday, December18, 2018 L-36.com


Marine Weather and Tides
Bloomfield, CA

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 7:21AMSunset 4:54PM Tuesday December 18, 2018 3:39 AM PST (11:39 UTC) Moonrise 2:19PMMoonset 2:45AM Illumination 83% Phase: Waxing Gibbous; Moon at 11 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 Coastal Waters From Point Arena To Point Reyes California Out To 10 Nm- 255 Am Pst Tue Dec 18 2018
.small craft advisory in effect through Wednesday afternoon...
Today..S winds 10 to 15 kt. Wind waves 2 ft or less. W swell 11 to 13 ft at 16 seconds. A slight chance of rain this morning. A chance of rain this afternoon.
Tonight..S winds up to 10 kt. Wind waves 2 ft or less. W swell 11 to 13 ft at 15 seconds. A chance of rain.
Wed..NW winds up to 10 kt. Wind waves 2 ft or less. W swell 11 to 13 ft at 18 seconds.
Wed night..NW winds 5 to 10 kt. Wind waves 2 ft or less. W swell 13 to 16 ft at 19 seconds.
Thu..SE winds 5 to 15 kt. Wind waves 2 ft or less. W swell 10 to 12 ft at 18 seconds. A slight chance of rain.
Thu night..S winds 5 to 15 kt. Wind waves 2 ft or less. W swell 10 to 12 ft at 17 seconds. A chance of showers.
Fri..NW winds 5 to 15 kt. Wind waves 2 ft or less. W swell 8 to 11 ft.
Sat..NW winds 5 to 10 kt. Wind waves 2 ft or less. W swell 8 to 11 ft.
PZZ500 255 Am Pst Tue Dec 18 2018
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Weak high pressure off the big sur coast will produce locally gusty northwest winds along the big sur coast this afternoon and evening. A weak front will bring light southerly winds to the northern waters today. Otherwise generally light northwest winds are expected through Wednesday. A large long-period swell will slowly decrease today but may increase again Wednesday night as another swell train approaches.


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 181107
afdmtr
area forecast discussion
national weather service san francisco bay area
307 am pst Tue dec 18 2018

Synopsis High surf advisories continue today. Otherwise a weak
warm front will bring light rain to the far north bay. Drying
trend Wednesday and Thursday all areas with the next weak front
bringing some light rain, mainly to the north bay Thursday night.

Drying trend returns Friday and Saturday before rain chances
increase Sunday into Monday.

Discussion As of 3:07 am pst Tuesday... Short term concern is
patchy dense fog. So far its mainly confined to the north bay with
sonoma, napa and novato all reporting overnight. Nighttime
microphysics on the goes-17 shows some patches over the southern
salinas valley as well with more valley fog formation likely
between now and sunrise.

Upper and surface pattern features high pressure over the region
at this time but its a dirty ridge with lots of high clouds
spilling over in well defined anti-cyclonic flow aloft. 588 dm
ridge centered west of point conception with moist boundary
slamming into CAPE mendocino. Models bring rain shield as far
south as northern sonoma county today, to about the 576 dm
contour. Pretty high confidence for light rain along the mendo
county line but little precip south of santa rosa with amounts on
the light side across northern sonoma county. Elsewhere filtered
sunshine with highs upper 50s and lower 60s today.

Dry conditions region-wide on weds and Thursday as high pressure
noses across the bay area. Daytime highs seasonably mild in the
upper 50s and 60s with fairly mild overnight lows in the 40s.

Pattern remains progressive with another front poised to move
towards CAPE mendocino Thursday night. This should bring a quick
shot of light rain, mainly for the north bay Thursday night.

Similar to recent trends the front will weaken and fall apart
south of i-80.

Lingering clouds, especially for the north bay on Friday but
a return of dry and seasonable weather into Saturday.

The euro brings a shot of light moderate rain Sunday and then
again later Monday into early Tuesday while the GFS has it focused
mainly on Monday as a one time storm. Ensemble and model blend
data is focusing on Monday right now as the best chance for an
organized rain storm. Will see if the latest euro is the leading
indicator or an outlier as model specifics beyond about 5 days
have been changeable as of late in this moist onshore flow.

Long range signals still look good for continued wet and active
weather beyond christmas with the pna signal forecast to turn
negative implying troughiness along the west coast.

Aviation As of 10:15 pm pst Monday... For 06z tafs. Upper low
over pacnw spreading moisture into the mid to upper levels this
evening, resulting in few-bkn at 15-20000 ft agl. Lingering low
level moisture is also contributing to some lower clouds and
patchy fog in sheltered valleys and coastal locations. Patchy
dense fog will linger near ksts and possibly klvk into sunrise.

Otherwise, few-bkn clouds in the 800-1500 ft range may develop
across the sf bay area overnight. Otherwise,VFR is expected with
winds under 10 kt through the forecast period.

Vicinity of ksfo...VFR. Intermittent low clouds across the sf bay
tonight may briefly become borderline MVFR ifr. Light winds.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals... Intermittent MVFRVFR this evening.

Hazy misty near the immediate coast due to sea spray from todays
large breaking waves which could lower visibility down to 6-8sm
range. Light winds.

Beaches As of 10:30 pm pst Monday... Hazardous conditions will
persist along the shoreline tonight through Tuesday as a large
swell train continues to impact the region. Wave energy peaked
through the day Monday and both period and wave height are now on
the downward trend. Large wnw swell of 15 to 20 feet at 16 to 19
seconds is expected tonight into Tuesday, which is sufficient to
generate breakers of 20 to 30 feet, locally higher at favored
break points along the coast. In addition, large wave run up is
possible along the coast, particularly during high tide. As a
result, a high surf advisory replaced the high surf warning
earlier this evening and is in effect through sunset Tuesday. A
different large, long period NW swell train will move into the
waters late Wednesday into Thursday. Do not turn your back on the
ocean and stay aware of your surroundings if visiting the coast.

Marine As of 02:40 am pst Tuesday... A very large and long
period wnw swell will persist overnight, creating hazardous seas
with swells of 14 to 20 feet at around 16 to 19 seconds. While
the swell will subside into Tuesday, another long period well
train will arrive by midweek and result in continued hazardous
conditions. A split wind wind flow will develop on Tuesday with
breezy southerly winds north of point reyes and locally breezy
northerly winds south of point sur. Elsewhere, winds will remain
light westerly.

Mtr watches warnings advisories
Tday High surf advisory... Coastline til 5pm
sca... Mry bay
sca... Pt arena to pt reyes 0-10 nm
sca... Pt reyes to pigeon pt 0-10 nm
sca... Pigeon pt to pt pinos 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
sca... Rough bar advisory for sf bar
public forecast: rww
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
46013 - Bodega Bay - 48NM North Northwest of San Francisco, CA 25 mi39 min E 9.7 G 14 58°F1025.4 hPa (+0.0)
PRYC1 - 9415020 - Point Reyes, CA 26 mi39 min 56°F1025.8 hPa (+0.0)
RCMC1 - 9414863 - Richmond, CA 38 mi39 min 56°F
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 38 mi39 min SE 1.9 G 2.9 49°F 1026.2 hPa (+0.6)
TIBC1 - Tiburon Pier, San Francisco Bay, CA 39 mi40 min Calm 50°F 1026 hPa
46237 - San Francisco Bar, CA (142) 41 mi69 min 57°F11 ft
PPXC1 - 9414847 - Richmond (Point Potrero), CA 41 mi39 min N 5.1 G 6 51°F 1026.5 hPa (+0.4)
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 42 mi39 min SSW 1.9 G 3.9 57°F 58°F1026.4 hPa (+0.3)
46214 - Point Reyes, CA (029) 43 mi39 min 59°F14 ft
FTPC1 - 9414290 - San Francisco, CA 44 mi45 min Calm G 1 52°F 56°F1026.4 hPa
MZXC1 - 9415102 - Martinez-Amorco CA 45 mi39 min WSW 1.9 G 2.9 49°F 53°F1026.4 hPa (+0.7)49°F
PXOC1 - 9414311 - San Francisco (Pier 1), CA 46 mi39 min ESE 5.1 G 6 53°F 1025.1 hPa (+0.3)
PXSC1 46 mi39 min 54°F 54°F
SFXC1 - San Francisco Bay Reserve, CA 46 mi114 min SW 1 44°F 1026 hPa41°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 47 mi39 min SE 2.9 G 4.1 51°F 1026.2 hPa (+0.4)
OBXC1 47 mi39 min 52°F 52°F
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 48 mi39 min ESE 5.1 G 5.1
PCOC1 - 9415144 - Port Chicago, CA 48 mi39 min S 6 G 7 48°F 53°F1026.3 hPa (+0.6)

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 mi46 minN 38.00 miOvercast48°F48°F100%1025.2 hPa
Petaluma Municipal Airport, CA15 mi44 minN 00.15 miFog45°F44°F100%1026.4 hPa
Novato / Gnoss Field, CA22 mi44 minN 00.15 miFog45°F44°F100%1026.4 hPa

Wind History from STS (wind in knots)
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Last 24hrCalmW4CalmN4CalmW4N4NW3NE3CalmCalmCalmCalmW3CalmW4CalmCalmCalmCalmN3N3N3N3
1 day agoSE7S7SE9SE9S8SE7SE9
G19
SE9SE10S9SE8S9S10S8W10
G18
SW4W5CalmSW3S3CalmCalmCalmCalm
2 days agoN3NW4N3CalmN3CalmN3CalmSE3S6S7S8S6S6S5CalmCalmE3CalmCalmCalmSE8SE9SE6

Tide / Current Tables for Bodega Harbor entrance, California
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Bodega Harbor entrance
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Tue -- 12:47 AM PST     1.89 feet Low Tide
Tue -- 02:46 AM PST     Moonset
Tue -- 07:07 AM PST     5.66 feet High Tide
Tue -- 07:23 AM PST     Sunrise
Tue -- 02:11 PM PST     0.79 feet Low Tide
Tue -- 02:19 PM PST     Moonrise
Tue -- 04:53 PM PST     Sunset
Tue -- 08:21 PM PST     3.95 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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21.92.22.93.84.75.35.75.54.93.92.81.81.10.80.91.52.22.93.63.93.93.63.1

Tide / Current Tables for Tomales Bay Entrance, California (2)
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Tomales Bay Entrance
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Tue -- 01:23 AM PST     1.63 feet Low Tide
Tue -- 02:46 AM PST     Moonset
Tue -- 07:23 AM PST     Sunrise
Tue -- 07:33 AM PST     5.10 feet High Tide
Tue -- 02:19 PM PST     Moonrise
Tue -- 02:47 PM PST     0.63 feet Low Tide
Tue -- 04:53 PM PST     Sunset
Tue -- 08:47 PM PST     3.61 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.91.71.72.22.93.84.555.14.74321.20.70.60.91.52.333.53.63.43

Weather Map and Satellite Images
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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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Wind Forecast for San Francisco/Monterey Bay Area, CA (6,6,7,8)
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Ground Weather Radar Station Sacramento, 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.