Sunday, August25, 2019 L-36.com


Marine Weather and Tides
Stanford, CA

Version 3.4
NOTICE
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 6:32AMSunset 7:49PM Sunday August 25, 2019 5:48 PM PDT (00:48 UTC) Moonrise 12:16AMMoonset 3:10PM Illumination 21% Phase: Waning Crescent; Moon at 25 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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PZZ530 San Pablo Bay, Suisun Bay, The West Delta And The San Francisco Bay North Of The Bay Bridge- 232 Pm Pdt Sun Aug 25 2019
Tonight..SW winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight.
Mon..SW winds 10 to 15 kt.
Mon night..SW winds 10 to 15 kt.
Tue..SW winds 10 to 15 kt.
Tue night..SW winds 10 to 15 kt.
Wed..SW winds 15 to 20 kt with gusts up to 25 kt.
Wed night..SW winds 10 to 15 kt.
Thu..SW winds 10 to 15 kt.
Fri..W winds 10 to 15 kt.
PZZ500 232 Pm Pdt Sun Aug 25 2019
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Weakening high pressure over the eastern pacific will keep light winds over the coastal waters through about the middle of next week. SEa breezes will develop in the afternoons and evenings over the san francisco bay to the delta. Southerly swell will persist through early next week as a tropical system west of the baja peninsula progresses northward. Additionally, light to moderate northwest swell will continue through the period.


7 Day Forecast for Marine Location Near Stanford, CA
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location: 37.45, -122.17     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 252055
afdmtr
area forecast discussion
national weather service san francisco bay area
155 pm pdt Sun aug 25 2019

Synopsis High pressure will produce warmer temperatures through
early next week, especially across inland areas where very warm
temperatures are forecast. The marine layer will persist along the
coast, along with light onshore flow, resulting in relatively
mild temperatures near the ocean and bays. Moisture from tropical
storm ivo may pass across our area from Tuesday afternoon into
Wednesday, bringing increasing clouds and higher humidity. Cooler
temperatures are forecast for the second half of next week.

Discussion As of 1:55 pm pdt Sunday... The low clouds from
earlier this morning have retreated back to the immediate
coastline, providing mostly sunny skies for much of the san
francisco bay area. Visible satellite shows the remaining marine
stratus at locations such as point reyes, ocean beach in san
francisco, half moon bay, and moss landing. Temperatures are
generally running about 2 to 5 degrees f warmer than they were 24
hours ago, consistent with the expected trends by the time the
afternoon wraps up. High temperatures along the coast will
register in 60s 70s with inland locations warming the upper 80s to
90s. Some of the region's hottest locations such as pinnacles
national park and extreme southern monterey county will approach
and possibly exceed 100 degrees.

A broad 594 dm ridge at 500 mb is largely responsible for the warm
to hot weather across the region. With gradual warming at 850 mb
forecast over the next 24 hours, surface temperatures on Monday
afternoon will at least match and likely exceed today's readings
by at least a few to several degrees. The marine layer is not
expected to get any deeper than its present 1,000 ft depth with
the ridge firmly overhead; therefore, any stratus coverage on
Monday morning will likely be limited to the shorelines. Though
high temperatures will be around 5-10 degrees above late august
climatological normals both today and tomorrow, most population
centers will benefit from appreciable overnight cooling that will
prevent heat risks from going beyond the moderate category for
interior communities. Locations at above 750-1000 ft elevation
will be the isolated spots that can expect mild overnight lows in
mid 60s to 70s.

The much discussed now tropical depression ivo continues its
northbound trajectory in the eastern pacific, presently situated
about 500 miles wnw of the southern tip of the baja california
peninsula. Further weakening is expected as it is forecast to
become a remnant low later today. The leftover moisture from ivo
will continue north over the next several days, and will parallel
the california coast by late Tuesday and into Wednesday. The 12z
models keep the bulk of moisture and best instability offshore;
however, the latest NAM does try to bring some of the higher rh
values and mid-level instability to northern california on
Wednesday afternoon. The present forecast would provide locations
north of sonoma county the best potential for any scattered
showers storms, but this is subject to change, particularly if the
remnant moisture tracks east by 50 to 100 miles. The most likely
impacts at this point for much of the san francisco bay area and
central california coast will be increased cloudiness in the mid-
levels as well as higher dewpoints at the surface.

Temperatures are forecast to moderate by the end of the week with
more seasonable highs expected as trough approaches the pacific
northwest. The latest climate prediction center 6-10 day outlook
does paint a large area with increased probabilities of above
normal temperatures for the west coast for the beginning of
september as the ridge begins to rebuild.

Aviation As of 10:40 am pdt Sunday... For 18z tafs. Current
satellite imagery shows stratus clearing to the coast.VFR
conditions are expected for the rest of the day but patchy stratus
and possible fog will return again tonight most areas. Light
winds this morning to increase and turn onshore this afternoon
10-15 kt with occasional higher gusts possible.

Vicinity of ksfo...VFR conditions through the evening. Patchy
stratus to return overnight. W to NW winds around 10 kt this
morning increasing to 15 kt this afternoon.

Sfo bridge approach... Low clouds still clearing over the approach.

Otherwise, similar to ksfo.

Monterey bay terminals...VFR conditions with ifr CIGS potentially
returning early this evening. Onshore winds this afternoon 10-15
kt.

Marine As of 8:26 am pdt Sunday... Weakening high pressure over
the eastern pacific will keep light winds over the coastal waters
through early to mid next week. Sea breezes will develop in the
afternoons and evenings over the san francisco bay to the delta.

Southerly swell will increase to 2 to 3 feet today and persist
through early next week as a tropical system west of the baja
peninsula progresses northward. Additionally, light to moderate
northwest swell will continue through the period.

Mtr watches warnings advisories
Tngt None.

Public forecast: rowe
aviation: sims
marine: sims
visit us at

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
RTYC1 - 9414523 - Redwood City, CA 5 mi49 min N 12 G 16 71°F 77°F1014.5 hPa (-1.1)
AAMC1 - 9414750 - Alameda, CA 23 mi49 min W 8.9 G 11 69°F 72°F1014.8 hPa (-1.2)
LNDC1 25 mi49 min NNE 6 G 8.9 72°F 1014.3 hPa (-1.3)
OBXC1 26 mi49 min 68°F 60°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 26 mi49 min W 6 G 8 68°F 1014.3 hPa (-1.3)
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 26 mi49 min WNW 6 G 8
PXSC1 27 mi49 min 69°F 58°F
PXOC1 - 9414311 - San Francisco (Pier 1), CA 27 mi49 min SW 2.9 G 9.9 69°F 1013.2 hPa (-1.5)
FTPC1 - 9414290 - San Francisco, CA 29 mi49 min WSW 15 G 20 60°F 63°F1014.7 hPa (-1.3)
PPXC1 - 9414847 - Richmond (Point Potrero), CA 33 mi49 min S 7 G 9.9 67°F 1014.5 hPa (-1.4)
TIBC1 - Tiburon Pier, San Francisco Bay, CA 34 mi56 min SSW 8.9 75°F 1014 hPa (-2.0)
46237 - San Francisco Bar, CA (142) 34 mi49 min 62°F3 ft
RCMC1 - 9414863 - Richmond, CA 35 mi49 min SE 4.1 G 5.1 72°F 69°F1013.7 hPa (-1.5)
MZXC1 - 9415102 - Martinez-Amorco CA 40 mi49 min WNW 9.9 G 12 85°F 73°F1012.8 hPa (-1.4)
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 41 mi29 min W 5.8 G 7.8 59°F 61°F1015.8 hPa
UPBC1 41 mi49 min WNW 13 G 15
PCOC1 - 9415144 - Port Chicago, CA 42 mi49 min W 14 G 16 86°F 73°F1012.8 hPa (-1.3)
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 42 mi49 min WSW 9.9 G 13 79°F 1012.8 hPa (-1.5)
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 43 mi49 min NW 11 G 14 86°F 1012.3 hPa (-1.2)
46042 - MONTEREY - 27NM West of Monterey Bay, CA 48 mi59 min 12 G 14 60°F 63°F4 ft1014.8 hPa (-1.0)
MLSC1 - Moss Landing, South Harbor, CA 49 mi45 min W 8 G 23 60°F 1015.7 hPa58°F
ELXC1 - Elkhorn Slough Reserve, CA 49 mi64 min WNW 5.1 62°F 1015 hPa60°F
46092 - MBM1 49 mi99 min W 12 59°F 59°F1015.3 hPa (-1.4)

Wind History for Redwood City, CA
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Palo Alto Airport, CA3 mi62 minNNW 1110.00 miClear75°F60°F61%1013.9 hPa
San Carlos Airport, CA7 mi2 hrsNNW 710.00 miClear0°F0°F%1014.2 hPa
Mountain View, Moffett Field, CA7 mi1.9 hrsNNW 910.00 miFair78°F60°F54%1014.6 hPa
San Jose, San Jose International Airport, CA14 mi56 minNW 1110.00 miFair82°F61°F49%1013.5 hPa
Hayward, Hayward Air Terminal, CA15 mi55 minW 910.00 miFair80°F60°F51%1014.8 hPa
San Francisco, San Francisco International Airport, CA15 mi1.9 hrsWNW 1810.00 miA Few Clouds and Breezy71°F57°F61%1014.3 hPa
Oakland, Metro Oakland International Airport, CA17 mi56 minWNW 910.00 miA Few Clouds75°F57°F55%1014.4 hPa
Half Moon Bay Airport, CA18 mi54 minWNW 78.00 miOvercast61°F57°F88%1015.6 hPa
San Jose / Reid / Hillv, CA20 mi62 minNW 1010.00 miClear88°F57°F35%1013.9 hPa

Link to 5 minute data for KPAO

Wind History from PAO (wind in knots)
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Last 24hr--NW9----------------------CalmCalmCalm4--N7N9N11N13N11N11
1 day agoNW15N14--NW9------------------CalmNE5N4--------NW10NW11----
2 days ago--------------------------CalmCalmN4N4N7N9N10NW12NW11N12N15

Tide / Current Tables for Palo Alto Yacht Harbor, San Francisco Bay, California
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for Dumbarton Hwy Bridge, South San Francisco Bay, California Current
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Dumbarton Hwy Bridge
Click for Map
Sun -- 12:14 AM PDT     -1.09 knots Max Ebb
Sun -- 01:15 AM PDT     Moonrise
Sun -- 03:58 AM PDT     0.00 knots Slack
Sun -- 06:32 AM PDT     Sunrise
Sun -- 07:07 AM PDT     1.23 knots Max Flood
Sun -- 10:23 AM PDT     -0.01 knots Slack
Sun -- 12:51 PM PDT     -0.48 knots Max Ebb
Sun -- 03:36 PM PDT     0.00 knots Slack
Sun -- 04:09 PM PDT     Moonset
Sun -- 06:44 PM PDT     0.98 knots Max Flood
Sun -- 07:47 PM PDT     Sunset
Sun -- 09:23 PM PDT     -0.01 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-1.1-1-0.7-0.400.61.11.21.10.80.3-0.2-0.4-0.5-0.3-0.10.10.60.910.70.2-0.2-0.6

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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for San Francisco/Monterey Bay Area, CA (20,4,5,8)
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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.