Sunday, August19, 2018 L-36.com


Marine Weather and Tides
Bolinas, CA

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7/21/2018 Trying to make page Mobile Friendly

Sunrise 6:27AMSunset 7:59PM Saturday August 18, 2018 11:04 PM PDT (06:04 UTC) Moonrise 1:21PMMoonset 11:53PM Illumination 53% Phase: First Quarter Moon; Moon at 8 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- 923 Pm Pdt Sat Aug 18 2018
Tonight..W winds 5 to 15 kt. Wind waves 1 to 3 ft. Mixed swell nw 2 to 4 ft at 8 seconds and S 3 ft at 15 seconds. Patchy fog after midnight.
Sun..W winds 10 kt. Wind waves 2 ft or less...becoming 3 to 4 ft in the afternoon. Mixed swell nw 2 to 4 ft at 8 seconds and S 3 ft at 14 seconds. Patchy fog in the morning.
Sun night..W winds 5 to 15 kt. Wind waves 1 to 3 ft. Mixed swell nw 3 to 5 ft at 8 seconds and S 3 ft at 14 seconds. Patchy fog after midnight.
Mon..W winds 5 to 15 kt. Wind waves 1 to 3 ft. NW swell 3 to 5 ft at 8 seconds. Patchy fog in the morning.
Mon night..W winds 10 kt. Wind waves 2 ft or less. NW swell 4 ft at 8 seconds. Patchy fog after midnight.
Tue..W winds 5 to 15 kt. Wind waves 1 to 3 ft. NW swell 2 to 3 ft. Patchy fog.
Wed..W winds 5 to 15 kt. Wind waves 1 to 3 ft. W swell 2 to 4 ft. Patchy fog.
Thu..W winds 5 to 15 kt. Wind waves 1 to 3 ft. W swell 2 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 2.2 knots at 10:19 pm Saturday and 1.4 knots at 11:07 am Sunday.
PZZ500 923 Pm 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... Northwest winds will remain generally light through the week as high pressure resides over the eastern pacific and a trough sits over interior california. Locally gusty northwesterly winds will continue in the northern outer waters through Tuesday. Light to moderate mixed northwest and southerly swell will continue through the weekend.


7 Day Forecast for Marine Location Near Bolinas, CA
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location: 37.67, -123.15     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 190543
afdmtr
area forecast discussion
national weather service san francisco bay area
1043 pm pdt Sat aug 18 2018

Synopsis Very warm conditions will persist inland on Sunday,
although temperatures are expected to be a few degrees cooler
than today. An upper disturbance will move into northern
california by late Sunday and generate a modest cooling trend
regionwide during the first half of the work week. Below seasonal
temperatures can be expected near the coast, in conjunction with a
deepening marine layer, while near to slightly above seasonal
temperatures will persist inland. Seasonal conditions are expected
later in the week.

Discussion As of 8:55 pm pdt Saturday... Temperatures at most
inland locations inched slightly higher today as an upper ridge
reached its maximum strength over california. Most inland valleys
warmed into the 90s. The warmest location in our forecast area
today was pinnacles national park with a high of 106. A shallow
marine layer persisted near the coast, as did light onshore flow.

Thus, coastal temperatures remained mostly in the 60s and lower
70s. Whale point, on the southern monterey county coast had a high
today of only 55, which is 51 degrees cooler than the 106 at
pinnacles just 35 miles to the northeast.

Evening water vapor satellite imagery shows a weak upper trough
just off the coast of the pacific northwest. This trough is
forecast to dig southeast into the pacific northwest on Sunday and
into northern california from Sunday night into Tuesday. Impacts
from the upper trough are expected to mostly be felt starting
Monday, but minor effects are expected tomorrow. There will
likely be an uptick in onshore flow by late afternoon and the
marine layer may begin to deepen from its current depth of 1000
feet. Modest cooling is likely in the coastal valleys and around
san francisco bay tomorrow, but no more than a few degrees of
cooling is expected for the inland valleys and hills. Thus, expect
another very warm day inland tomorrow. Low clouds and fog will
likely persist along the coast, helping to maintain cool
conditions in coastal communities. The latest hrrr smoke model
indicates continued poor air quality across the bay area on Sunday
as smoke from the mendocino complex increases across the area.

Inland areas are expected to experience relief from the heat early
in the work week as the trough sags into northern california,
triggering a increase in the depth of the marine layer. The inland
valleys are expected to cool by as much as ten degrees by Tuesday.

The upper trough is forecast to move off to the east by Thursday,
allowing for slightly warmer temperatures late in the week.

Longer range models agree that a longwave trough will develop
across the western united states by next weekend and perhaps
persist for a while. The climate prediction center's 8-14 day
outlook calls for near normal to below normal temperatures across
northern and central california during the final week of august.

Aviation As of 10:43 pm pdt Saturday... Weather data and high-
resolution rapid refresh model output indicate reduced slant range
visibilities and areas of MVFR in haze and smoke will very likely
continue into Sunday. Smoke originating from the mendocino complex
will spread into the bay area overnight and Sunday. Coupled with
the smoke will be a steady influx of marine based stratus and fog,
stratus ceilings on the coastline are ifr as the marine layer is
1000 to 1500 feet deep. Ceilings and visibilities on the immediate
coast and locally inland will lower tonight to lifr and vlifr.

Vicinity of ksfo...VFR. Light westerly wind tonight. Increasing
chances of MVFR visibility by early Sunday morning due to smoke
and haze. Some improvement in surface visibility is possible at
ksfo while slant range vis will quite likely remain moderate to
poor Sunday.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals... Lifr to vlifr tonight and Sunday morning.

Clearing to MVFR toVFR conditions by late Sunday morning and
afternoon. Coastal stratus and fog likely moving back in Sunday
evening.

Marine As of 10:32 pm pdt Saturday... Northwest winds will remain
generally light through the week as high pressure resides over the
eastern pacific and a trough sits over interior california. Locally
gusty northwesterly winds will continue in the northern outer waters
through Tuesday. Light to moderate mixed northwest and southerly swell
will continue through the weekend.

Mtr watches warnings advisories
Tngt Sca... Pt arena to pigeon pt 10-60 nm
public forecast: dykema
aviation: canepa
marine: as
visit us at

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 17 mi25 min NW 9.7 G 12 54°F 58°F1017.2 hPa
PRYC1 - 9415020 - Point Reyes, CA 24 mi41 min WNW 4.1 G 7 57°F1016.5 hPa
46214 - Point Reyes, CA (029) 26 mi95 min 60°F6 ft
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA 26 mi75 min WNW 7.8 G 12 58°F 60°F5 ft1016.9 hPa (+0.3)
46237 - San Francisco Bar, CA (142) 28 mi65 min 57°F5 ft
FTPC1 - 9414290 - San Francisco, CA 37 mi41 min W 2.9 G 8.9 53°F 59°F1016.6 hPa
46013 - Bodega Bay - 48NM North Northwest of San Francisco, CA 40 mi25 min W 3.9 G 5.8 54°F1016.5 hPa
PXOC1 - 9414311 - San Francisco (Pier 1), CA 41 mi41 min W 2.9 G 7 54°F 1015.4 hPa
PXSC1 41 mi41 min 55°F 55°F
RCMC1 - 9414863 - Richmond, CA 43 mi35 min 64°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 44 mi41 min W 4.1 G 5.1 55°F 1016.5 hPa
OBXC1 44 mi41 min 55°F 55°F
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 44 mi41 min WNW 4.1 G 7
PPXC1 - 9414847 - Richmond (Point Potrero), CA 45 mi35 min S 14 G 16 55°F 1016.3 hPa
AAMC1 - 9414750 - Alameda, CA 46 mi41 min WNW 4.1 G 6 56°F 70°F1016.7 hPa
LNDC1 47 mi41 min W 6 G 7 57°F 1016.4 hPa

Wind History for Point Reyes, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
San Francisco, San Francisco International Airport, CA42 mi69 minWNW 1610.00 miA Few Clouds56°F53°F90%1015.9 hPa

Wind History from SFO (wind in knots)
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Last 24hrW10W9W8W8W7W10W7W6W6CalmCalmNW5NW9NW11NW13NW15NW18NW15W20NW17NW18NW17W17W16
1 day agoW15
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2 days agoW11W16W15W10W11W9W8W9W10W11W10W14W14W14NW17W19W21W19W18W17W17W17W17W17

Tide / Current Tables for Southeast Farallon Island, California
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Southeast Farallon Island
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Sun -- 12:52 AM PDT     Moonset
Sun -- 12:54 AM PDT     0.90 feet Low Tide
Sun -- 06:31 AM PDT     Sunrise
Sun -- 07:31 AM PDT     3.85 feet High Tide
Sun -- 12:34 PM PDT     2.66 feet Low Tide
Sun -- 03:17 PM PDT     Moonrise
Sun -- 06:34 PM PDT     5.44 feet High Tide
Sun -- 07:59 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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10.91.11.62.22.93.53.83.83.63.32.92.72.733.64.34.95.45.454.33.32.2

Tide / Current Tables for Point Reyes, California Current
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Point Reyes
Click for Map
Sun -- 12:52 AM PDT     Moonset
Sun -- 02:09 AM PDT     0.00 knots Slack
Sun -- 05:18 AM PDT     0.73 knots Max Flood
Sun -- 06:30 AM PDT     Sunrise
Sun -- 08:13 AM PDT     -0.00 knots Slack
Sun -- 10:25 AM PDT     -0.46 knots Max Ebb
Sun -- 02:03 PM PDT     0.00 knots Slack
Sun -- 03:17 PM PDT     Moonrise
Sun -- 04:55 PM PDT     0.58 knots Max Flood
Sun -- 07:43 PM PDT     -0.00 knots Slack
Sun -- 07:59 PM PDT     Sunset
Sun -- 10:55 PM PDT     -0.99 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.7-0.5-0.10.30.60.70.70.50.1-0.3-0.4-0.4-0.4-0.3-00.30.50.60.50.3-0.1-0.6-0.9-1

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 (2,6,7,8)
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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.