Saturday, August24, 2019 L-36.com


Marine Weather and Tides
Santa Venetia, 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 6:31AMSunset 7:53PM Saturday August 24, 2019 6:16 PM PDT (01:16 UTC) Moonrise 12:00AMMoonset 2:10PM Illumination 30% Phase: Waning Crescent; Moon at 24 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
    EDIT      (on/off)   Help
PZZ530 San Pablo Bay, Suisun Bay, The West Delta And The San Francisco Bay North Of The Bay Bridge- 238 Pm Pdt Sat Aug 24 2019
Tonight..SW winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight.
Sun..SW winds 10 to 15 kt with gusts up to 25 kt.
Sun night..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.
Tue night..SW winds 10 to 15 kt.
Wed..SW winds 10 to 15 kt.
Thu..SW winds 10 to 15 kt.
PZZ500 238 Pm Pdt Sat Aug 24 2019
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Northerly winds will persist over the northern outer waters while light southwesterly winds will develop elsewhere through the weekend. Steep, short period northwesterly swell will continue to decrease through the weekend with periods becoming 8 seconds. Moderate period southerly swell will increase to 2 to 3 feet on Sunday and persist through early next week with light to moderate period northwesterly swell continuing through the period.


7 Day Forecast for Marine Location Near Santa Venetia, CA
   Hourly   EDIT   Help
location: 38.02, -122.5     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus66 kmtr 242337
afdmtr
area forecast discussion
national weather service san francisco bay area
437 pm pdt Sat aug 24 2019

Synopsis High pressure will bring a fairly seasonable weather
pattern to the bay area this weekend into early next week. The
marine layer will persist along the coast along with onshore flow
keeping temperatures warm near the coast and bays. Inland
temperatures will trend hotter as the strong high pressure builds.

Remnants of tropical storm ivo will pass offshore Tuesday and
Wednesday with increasing clouds and higher humidity developing.

Discussion As of 2:31 pm pdt Saturday... After an overcast
morning for many, goes-west visible imagery reveals mostly clear
skies for most land areas throughout the region this afternoon.

Locations along the immediate pacific coast are still experiencing
cloudiness, including coastal sonoma and marin counties, parts of
san francisco, coastal san mateo and points south through
monterey county. 1-minute imagery shows the low clouds pushing
through the golden gate from alcatraz to treasure island as the
onshore gradients from san franciso to sacramento are around 2
millibars.

A broad 594 dm ridge at 500 mb located off the california coast
continues to be the main synoptic feature for our area. This
morning's 12z upper air sounding at oakland measured the 500 mb
height at 593 dm, ranking climatologically for this day in the
99th percentile. Ordinarily this would start to raise concerns
about excessive heat; however, the temperature at 850 mb was only
21.4 deg c, ranking around the 75th percentile climatologically.

For comparison, earlier in august when much of the interior
recorded highs near or above 100 deg f, 850 mb temperatures were
in the 24-25 deg c range. These "cooler" temperatures at the low
levels combined with onshore flow will together prevent widespread
upper 90s to 100s from becoming realized for the interior. Highs
will instead warm to the 80s and some 90s this afternoon,
particularly in the region's hottest areas. Temperatures along the
immediate coast will hold in the upper 60s to 70s. Compared to
yesterday, high temperatures will likely be a few or several
degrees cooler.

Over the rest of the weekend and into early next week, 850 mb
temperatures are forecast to gradually warm as the ridge remains
just off the california coast. We'll likely see the marine layer
compress as well, which will generally prevent widespread the
inland intrusion of the morning stratus. Inland temperatures are
expected to warm day-to-day with widespread 90s more likely by
Monday. Locations such as pinnacles national park and the far
north bay near lake berryessa and cloverdale will likely be near
100 degrees. For late august, these values correspond to low to
moderate heat risks. Coastal communities will continue to benefit
from the marine-cooled air with little or no heat impacts
anticipated.

We're continuing to keep a close eye on tropical storm ivo,
presently located about 420 miles west of the southern tip of the
baja peninsula. Ivo is forecast to continue its northward
trajectory over the next several days, weakening as it encounters
cooler waters. Moisture from what will be the remnants of ivo will
advect towards california around the Tuesday-Wednesday timeframe.

Models generally keep the bulk of the moisture off the mainland
for most of Tuesday, but by late Tuesday and into Wednesday, the
latest runs of the ECMWF and GFS bring increased mid upper level
rhs and even some instability closer to home. The tail end of the
latest run of the NAM is beginning to capture our time frame of
interest, and over the next 24 hours, we should be able to get a
better idea with the potential for convection over our area. At a
bare minimum, we should expect increased mid high clouds as the
remnants approach the region. Stay tuned for more details...

Aviation As of 4:37 pm pdt Saturday... It'sVFR all locations
except along the coastline point sur to northern coastal sonoma
county there's almost, not quite, continuous MVFR-ifr CIGS vsbys
in stratus and fog. The 4 pm onshore pressure gradient sfo-sac is
2.4 mb, other directional pressure gradients have relaxed are
closer to balanced since Friday thus the overall wind field at
the surface is lighter today with the usual summer late day sea
breezes. Increasing coverage of MVFR-ifr tonight, conditions most
places nearest the coastline are forecast to lower to ifr
overnight. Conditions then lifting toVFR back to the coastline
late morning to afternoon Sunday.

Vicinity of ksfo...VFR, west wind near 15 knots until 03z. MVFR
cig developing by 14z then back toVFR by 17z Sunday.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals...VFR, west winds near 10 knots early in
the evening. Ifr CIGS returning by 03-04z. CIGS Sunday lift toVFR
by late morning.

Marine As of 4:06 pm pdt Saturday... Northerly winds will
persist over the northern outer waters while light southwesterly
winds will develop elsewhere through the weekend. Steep, short
period northwesterly swell will continue to decrease through the
weekend with periods becoming 8 seconds. Moderate period southerly
swell will increase to 2 to 3 feet on Sunday and persist through
early next week with light to moderate period northwesterly swell
continuing through the period.

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

Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
RCMC1 - 9414863 - Richmond, CA 8 mi46 min SSE 7 G 8.9 68°F 68°F1013.4 hPa
TIBC1 - Tiburon Pier, San Francisco Bay, CA 9 mi95 min SSW 8 69°F 1013 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 11 mi46 min SSW 6 G 9.9 66°F 1014.1 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 13 mi46 min WSW 13 G 15 73°F 1012.5 hPa
FTPC1 - 9414290 - San Francisco, CA 15 mi46 min WSW 11 G 17 61°F 63°F1014 hPa
PXOC1 - 9414311 - San Francisco (Pier 1), CA 16 mi46 min W 11 G 15 65°F 1012.9 hPa
PXSC1 16 mi52 min 67°F 60°F
OBXC1 17 mi46 min 65°F 62°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 17 mi46 min NW 8.9 G 9.9 63°F 1013.8 hPa
46237 - San Francisco Bar, CA (142) 18 mi76 min 61°F4 ft
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 18 mi46 min WNW 7 G 8
LNDC1 19 mi46 min NW 4.1 G 8 68°F 1013.8 hPa
UPBC1 20 mi46 min W 18 G 20
AAMC1 - 9414750 - Alameda, CA 20 mi46 min W 8.9 G 12 66°F 72°F1014.3 hPa
MZXC1 - 9415102 - Martinez-Amorco CA 20 mi46 min WSW 13 G 16 82°F 73°F1012.4 hPa
PCOC1 - 9415144 - Port Chicago, CA 25 mi46 min W 11 G 12 82°F 72°F1012.3 hPa
PRYC1 - 9415020 - Point Reyes, CA 25 mi46 min 60°F1014.6 hPa
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 26 mi26 min WSW 3.9 G 5.8 60°F 60°F4 ft1015.1 hPa
SFXC1 - San Francisco Bay Reserve, CA 28 mi91 min WNW 13 87°F 1012 hPa60°F
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 33 mi46 min NW 11 G 15 83°F 1011.6 hPa
RTYC1 - 9414523 - Redwood City, CA 39 mi46 min NNW 12 G 15 68°F 76°F1014.1 hPa
46013 - Bodega Bay - 48NM North Northwest of San Francisco, CA 45 mi26 min WSW 1.9 G 3.9 54°F4 ft1014.5 hPa

Wind History for Richmond, CA
(wind in knots)    EDIT      (on/off)   Help
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
Last
24hr
SW3
G7
S3
G9
W4
G7
SW3
SW3
G8
SW5
G8
SW4
G9
SW5
G8
S4
SW6
G11
SW6
G9
SW6
SW4
G8
SW4
G7
SW4
W6
S3
S4
S5
SE8
SE5
G10
SE8
S10
SE6
G9
1 day
ago
S7
G12
S6
G9
S7
S7
G11
S8
S9
S6
G9
S7
G10
S6
G10
S5
G8
S4
G9
S9
G14
S11
G17
S9
G13
S9
G15
S7
G11
S9
G13
SW9
G14
SW9
G13
SW10
G16
SW9
G17
SW10
G18
SW12
G19
SW7
G13
2 days
ago
NW9
NW15
NW2
G5
NW12
G18
S3
G8
S5
G9
S4
G8
S8
G11
S10
S9
G13
S9
G14
S11
S8
G11
S6
S6
S5
S7
G10
S5
G8
S5
G8
SE4
G9
S5
S4
SE7
G11
SE2

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports. Follow links for more data.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Novato / Gnoss Field, CA9 mi61 minSW 1110.00 miFair86°F57°F38%1012.2 hPa
Petaluma Municipal Airport, CA17 mi61 minVar 67.00 miFair79°F60°F54%1013.5 hPa
Napa, Napa County Airport, CA18 mi82 minSSW 1710.00 miFair79°F61°F54%1011.6 hPa
Concord, Buchanan Field, CA24 mi83 minWSW 1110.00 miFair89°F46°F23%1010.9 hPa

Link to 5 minute data for KDVO

Wind History from DVO (wind in knots)
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
Last 24hrN11N8--N6--N7N8N8CalmCalmSW4CalmCalmCalmCalm4NE9NE7N7NE7
G12
NE8E7SW9SW11
1 day agoSW8E6----N6N4NW5CalmCalmCalmCalmCalmS6CalmCalmCalm4N4E7E6SE7SE75
G15
N11
2 days agoE3
G11
S11------NE9------SE4CalmCalmCalmCalmCalmCalmNE64SE644
G10
SW11SW13SW10

Tide / Current Tables for Gallinas Creek, San Pablo Bay, California
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Gallinas Creek
Click for Map
Sat -- 12:31 AM PDT     Moonrise
Sat -- 02:19 AM PDT     0.94 feet Low Tide
Sat -- 06:32 AM PDT     Sunrise
Sat -- 09:10 AM PDT     3.90 feet High Tide
Sat -- 01:48 PM PDT     2.59 feet Low Tide
Sat -- 03:09 PM PDT     Moonset
Sat -- 07:51 PM PDT     Sunset
Sat -- 07:55 PM PDT     5.79 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
1.91.3111.422.73.33.73.93.83.532.72.62.83.44.255.65.85.54.93.9

Tide / Current Tables for Point San Pablo Midchannel, San Pablo Bay, California Current
   EDIT      (on/off)   Help   One Week of Data
Point San Pablo Midchannel
Click for Map
Sat -- 12:31 AM PDT     Moonrise
Sat -- 04:16 AM PDT     0.00 knots Slack
Sat -- 06:32 AM PDT     Sunrise
Sat -- 07:33 AM PDT     1.13 knots Max Flood
Sat -- 10:31 AM PDT     -0.00 knots Slack
Sat -- 12:30 PM PDT     -0.99 knots Max Ebb
Sat -- 03:04 PM PDT     0.00 knots Slack
Sat -- 03:09 PM PDT     Moonset
Sat -- 06:09 PM PDT     1.94 knots Max Flood
Sat -- 07:50 PM PDT     Sunset
Sat -- 09:17 PM PDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
-2.5-2.3-1.8-1.1-0.20.50.91.11.10.90.4-0.4-0.9-1-0.7-0.10.81.51.91.71.10.3-0.9-2

Weather Map and Satellite Images
       (on/off)   HelpWeather Map
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 (21,6,7,8)
      (on/off)   Help

Ground Weather Radar Station Sacramento, CA
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

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.