Sunday, August25, 2019 L-36.com


Marine Weather and Tides
Redwood, 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 4:01 AM PDT (11:01 UTC) Moonrise 12:16AMMoonset 3:10PM Illumination 26% 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- 244 Am Pdt Sun Aug 25 2019
Today..SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 25 kt this afternoon.
Tonight..SW winds 10 to 15 kt.
Mon..SW winds 10 to 15 kt with gusts up to 25 kt.
Mon night..SW winds 10 to 15 kt.
Tue..SW winds 10 to 15 kt with gusts up to 25 kt.
Tue night..SW winds 10 to 15 kt.
Wed..SW winds 15 to 20 kt.
Thu..SW winds 15 to 20 kt.
PZZ500 244 Am 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 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.


7 Day Forecast for Marine Location Near Redwood, CA
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location: 37.52, -122.2     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 251012
afdmtr
area forecast discussion
national weather service san francisco bay area
312 am 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 3:12 am pdt Sunday... Overnight satellite
imagery indicates the marine layer has filled in nicely along the
coast and locally inland, especially the salinas valley. Fort ord
profiler indicates the depth is near 1,000 feet, which is a tad
more compressed compare to 24 hours. The shallower marine layer
has also led to some patchy fog this morning. Automated sensors
are bay area airports put the visibility at 2-5 miles. It's
possible that some patchy dense fog may develop between now and
sunrise.

No major change from the previous forecast. The large scale
synoptic pattern continues to be dominated by a large area of high
pressure currently over the eastern pacific extending eastward in
california. A trace of 500 mb heights over the bay area indicate a
rise in heights through at least Monday. This makes sense given
the slight compression of the marine layer and expected warm up
today and tomorrow. Given the more compressed marine layer
erosion of clouds back to the coast today will be earlier than
Saturday morning. Earlier clearing of clouds today, building 500
mb heights and warming 850 mb temperatures will all contribute to
warmer temperatures today. MAX temps today are forecast to be in
the 60s and 70s along the coast, 70s and 80s bay shoreline, and
90s to lower 100s interior. A shallow marine layer will once
again be possible Sunday night into Monday. An additional few
degrees of warming will be possible on Monday. High temperatures
will be above normal for Sunday and Monday, but heat risk
potential will be minimal thanks to some weak onshore flow and
some cooling at night.

All focus then turns toward tropical depression ivo currently
moving northward off the baja coast. Latest forecast keeps ivo
tracking northward into less than favorable conditions. Therefore,
ivo will ultimately become a remnant low later today or tonight.

Why is this important for the bay area? For several days now
models bring the leftover tropical moisture northward, which could
impact ca with thunderstorms. The real question is the exact track
of said tropical moisture. The 00z models keep the best moisture
and instability over the offshore waters before moving inland
ca or Tuesday into Wednesday. Therefore, will not mention any
convection in the forecast, but more likely higher dewpoints and
upper level clouds. There is definitely some bust potential as a
slight eastward shift would bring the possibility of
thunderstorms inland, which would be bad from a fire weather stand
point. Needless to say, this will be watched closely.

500 mb heights will lower by mid-week and into next weekend.

Therefore temperatures will cool and return to more seasonable
levels for late august.

Aviation As of 10:53 pm pdt Saturday... It'sVFR except vlifr-
ifr is steadily developing under coastal stratus and fog. Khaf
reports 1 4 mile visibility in fog. The 10 pm onshore pressure
gradient sfo-sac is 2.6 mb and stratus and fog will move inland
overnight on onshore breezes. Conditions then lifting toVFR back
to the coastline late morning to afternoon Sunday.

Vicinity of ksfo...VFR then tempo ifr ceiling 08z-12z then ifr
prevailing until late morning approx 17z-18z. West wind near 15
knots Sunday afternoon and evening.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals... Vlifr-ifr ceilings tonight and Sunday
morning. Ceilings lift toVFR by late Sunday morning. Ifr likely
returning early Sunday evening.

Marine As of 10:38 pm pdt Saturday... A high pressure center
over the eastern pacific will slowly weaken as it moves closer to
british columbia through early to mid next week. In response the
northerly pressure gradient and winds will also ease over the
northern california coastal waters. Sea breezes will develop each
afternoon and evening over the san francisco bay to the delta.

Southerly swell will increase to 2 to 3 feet Sunday and persist
through early next week with light to moderate period northwesterly
swell continuing through the period.

Mtr watches warnings advisories
Tday Sca... Pt arena to pigeon pt 10-60 nm until 3 am
public forecast: mm
aviation: canepa
marine: canepa
visit us at

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
RTYC1 - 9414523 - Redwood City, CA 1 mi43 min WNW 4.1 G 5.1 63°F 76°F1015.8 hPa
AAMC1 - 9414750 - Alameda, CA 18 mi49 min W 2.9 G 4.1 62°F 72°F1015.6 hPa
LNDC1 19 mi43 min Calm G 1.9 62°F 1015.1 hPa
OBXC1 21 mi43 min 60°F 60°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 21 mi43 min Calm G 4.1 60°F 1015.2 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 21 mi43 min W 2.9 G 5.1
PXOC1 - 9414311 - San Francisco (Pier 1), CA 22 mi43 min WSW 2.9 G 5.1 59°F 1014.2 hPa
PXSC1 22 mi43 min 60°F 60°F
FTPC1 - 9414290 - San Francisco, CA 24 mi49 min SSW 5.1 G 8 58°F 64°F1015.5 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 28 mi43 min S 9.9 G 12 61°F 1015.3 hPa
46237 - San Francisco Bar, CA (142) 29 mi61 min 61°F3 ft
TIBC1 - Tiburon Pier, San Francisco Bay, CA 29 mi38 min Calm 59°F 1015 hPa
RCMC1 - 9414863 - Richmond, CA 30 mi43 min 67°F
UPBC1 36 mi43 min WNW 13 G 16
MZXC1 - 9415102 - Martinez-Amorco CA 36 mi43 min WNW 13 G 15
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 37 mi43 min WSW 8.9 G 12 62°F 1014.5 hPa
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 38 mi31 min Calm G 0 58°F 60°F1015.9 hPa
PCOC1 - 9415144 - Port Chicago, CA 38 mi43 min W 17 G 19
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 40 mi43 min NW 13 G 18
SFXC1 - San Francisco Bay Reserve, CA 48 mi76 min W 9.9 66°F 1014 hPa58°F

Wind History for Redwood City, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Mountain View, Moffett Field, CA10 mi65 minN 510.00 miOvercast64°F61°F90%1015.5 hPa
Hayward, Hayward Air Terminal, CA11 mi67 minWNW 310.00 miFair61°F57°F87%1015.9 hPa
San Francisco, San Francisco International Airport, CA11 mi65 minWNW 77.00 miA Few Clouds60°F57°F90%1015.1 hPa
Oakland, Metro Oakland International Airport, CA12 mi68 minN 09.00 miFair61°F57°F87%1015.3 hPa
Half Moon Bay Airport, CA16 mi61 minENE 30.75 miFog/Mist57°F55°F94%1015.6 hPa
San Jose, San Jose International Airport, CA18 mi68 minNNW 510.00 miFair64°F61°F90%1014.9 hPa
Livermore, Livermore Municipal Airport, CA24 mi68 minNW 310.00 miFair67°F55°F68%1014.1 hPa

Link to 5 minute data for KSQL

Wind History from SQL (wind in knots)
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Last 24hr------------------CalmCalmCalmCalmN7N9N8NW7N8NW9NW10N10N10N10N3
1 day ago------------------3CalmCalmCalmN6W8W11--NW7W10--W12
G16
SW9NW7NW5
2 days ago------------------NW53--4--N6NW9N9N8W11W11W11W16NW9NW9

Tide / Current Tables for Redwood Creek entrance (inside), San Francisco Bay, California
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Redwood Creek entrance (inside)
Click for Map
Sun -- 01:16 AM PDT     Moonrise
Sun -- 03:30 AM PDT     0.71 feet Low Tide
Sun -- 06:33 AM PDT     Sunrise
Sun -- 10:23 AM PDT     6.23 feet High Tide
Sun -- 03:07 PM PDT     3.16 feet Low Tide
Sun -- 04:09 PM PDT     Moonset
Sun -- 07:47 PM PDT     Sunset
Sun -- 08:49 PM PDT     8.08 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.72.31.30.80.81.42.43.64.85.76.26.15.44.53.63.23.44.35.56.87.88.17.76.7

Tide / Current Tables for Dumbarton Bridge, San Francisco Bay, California Current
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Dumbarton Bridge
Click for Map
Sun -- 12:10 AM PDT     -1.18 knots Max Ebb
Sun -- 01:15 AM PDT     Moonrise
Sun -- 03:47 AM PDT     0.00 knots Slack
Sun -- 06:32 AM PDT     Sunrise
Sun -- 07:03 AM PDT     1.29 knots Max Flood
Sun -- 11:20 AM PDT     -0.00 knots Slack
Sun -- 12:51 PM PDT     -0.35 knots Max Ebb
Sun -- 03:01 PM PDT     0.00 knots Slack
Sun -- 04:09 PM PDT     Moonset
Sun -- 06:46 PM PDT     1.12 knots Max Flood
Sun -- 07:47 PM PDT     Sunset
Sun -- 10:09 PM PDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-1.2-1.1-0.8-0.40.10.71.11.31.210.60.2-0.2-0.3-0.2-00.30.711.10.90.60.1-0.5

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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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for San Francisco/Monterey Bay Area, CA (7,2,3,4)
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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.