Saturday, February23, 2019 L-36.com


Marine Weather and Tides
Brisbane, 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 6:47AMSunset 5:58PM Saturday February 23, 2019 6:09 PM PST (02:09 UTC) Moonrise 10:56PMMoonset 9:37AM Illumination 78% Phase: Waning Gibbous; Moon at 19 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- 213 Pm Pst Sat Feb 23 2019
Tonight..W winds up to 10 kt...becoming east after midnight.
Sun..S winds up to 10 kt.
Sun night..SW winds 5 to 15 kt. A slight chance of rain.
Mon..S winds 15 to 25 kt with gusts up to 30 kt. A chance of rain.
Mon night..S winds 15 to 25 kt with gusts up to 30 kt. Rain likely.
Tue..S winds 20 to 30 kt with gusts up to 40 kt. Rain.
Tue night..S winds 20 to 30 kt with gusts up to 40 kt. Rain.
Wed..S winds 5 to 15 kt. A chance of rain.
Thu..W winds 5 to 10 kt.
PZZ500 213 Pm Pst Sat Feb 23 2019
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Generally light west winds will continue tonight. Winds will turn southerly on Sunday and ramp up early in the week. Light to moderate northwest swell will persist through the week.


7 Day Forecast for Marine Location Near Brisbane, CA
   Hourly   EDIT   Help
location: 37.67, -122.38     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus66 kmtr 240023
afdmtr
area forecast discussion
national weather service san francisco bay area
423 pm pst Sat feb 23 2019

Synopsis Dry and seasonably cool conditions will prevail across
most of the region through the remainder of this weekend. The
exception may be the north bay where there is a chance of light
rain late tonight and on Sunday. A plume of moisture will bring
periods of moderate to heavy rain to the majority of the region
for the first half of next week, though the exact positioning of
the heaviest rains continues to vary. Another potentially wet
system may bring more rain to the region late next week and into
the following weekend.

Discussion As of 2:00 pm pst Saturday... Water vapor imagery
continues to show northwesterly flow aloft prevailing across
california this afternoon. There is plenty of moisture streaming
through this flow in the form of high clouds ahead of the next
system. As a result, skies are mostly cloudy this afternoon, with
temperatures running similar to this time yesterday. Temperatures
will still be cool tonight, but not quite as cold as things start
to moderate with the high clouds in place.

The upper level ridge of the pacific will keep restrict how
quickly the next pacific storm digs south over the next 24 to 36
hours. As a result, the front will stall tonight and during the
day on Sunday, focusing the main moisture plume along the oregon
and california border and the far northern california coast.

Current composite radar is already showing some light showers
mainly from CAPE mendocino northward. This trend will likely
continue tonight and into Sunday, with the heaviest rain
developing and remaining well to our north. That being said, a
few light rain showers sag south of point area later tonight or
during the day on Sunday.

Monday through Wednesday is the time period to watch for us, as
things will likely start to get interesting for the central coast
sometime Monday afternoon or evening. At this time, the 12z GFS is
still the fastest with moving the rain into and south of the bay
area proper during the Monday morning commute. Meanwhile, the 12z
nam, ecmwf, and canadian hold off rain any rain until at least the
midafternoon and more likely the evening commute.

That being said, our north bay counties and mountains will likely
see periods of moderate to heavy rain develop during the day on
Monday and continue through Wednesday. The models are still
disagreeing with where the heaviest rainfall will occur. Most are
focusing on areas north of the golden gate bridge up to the
mendocino coast. However, the GFS shows the north bay and bay area
getting hit rather harder. This is leading to low confidence in
the exact placement of the heaviest rainfall. However, believe
the north bay will likely see quite a bit of rainfall regardless.

For now, it is not out of the question that 3 to 5 inches of rain
with locally amounts upward of 7 inches will be possible, leading
to flooding and more landslides or debris flows.

The main take away though is a series of disturbances will move
along the stalled front between Monday and Wednesday, bringing
relatively persistent rains, with periods of moderate to heavy
rain possible. Areas from santa cruz county northward will likely
see a decent amount of rain, with the north bay seeing the most at
this time, if models continue to trend this way. These various
disturbances will also bring periods of gusty winds. Therefore,
expect rapid rises along area rivers, streams, and creeks to be
possible the first part of the work week. Trees and powerlines
will also likely fall, as the grounds remain saturated.

Although some residual passing showers will be possible on
Thursday and Friday, they will be our in between days, before
another potentially more potent system takes aim at the region for
the weekend. For now, this latter system looks like it could be
wetter than the first as it has a better tap to the tropics.

However, the models are moving it through the region much faster.

Therefore, if comparing to the current system, they might actually
have similar impacts. Regardless, this week of weather bears
watching, and we encourage everyone to prepare early and stay
weather aware. Palmer

Aviation As of 4:23 pm pst Saturday...VFR, mid and high clouds
continue to advance in over the CWA from the west. MVFR cloud
ceilings are likely over the north bay Sunday morning as a nearly
stationary east to west 850 mb elevated frontal boundary develops,
850 mb warm air advection could result in spotty briefly very
light precip vicinity ksts per recent NAM hrrr output.

A separate, nearly stationary 925 mb frontal boundary develops
nearby the monterey bay terminals Sunday morning which may be the
focus for MVFR ceilings possibly lowering to ifr; not advertised
in the monterey bay 00z TAF cycle as of yet, but will look into it
a bit more this evening and amend tafs as needed.

Vicinity of ksfo...VFR, westerly wind 10 to 15 knots until 04z
this evening, light wind tonight becoming SE Sunday morning. An
onshore wind near 10 knots resumes later Sunday.

Sfo bridge approach... Similar to sfo.

Monterey bay terminals...VFR, w-nw winds near 10 knots diminishing
and becoming light SE wind by mid evening. SE wind Sunday morning
shifting back to onshore near 10 knots Sunday afternoon.VFR is
near high confidence through the evening, but confidence level in
cigs lowers late tonight and Sunday morning, as mentioned if a
lower level (925 mb level) front develops it may be the focus for
ceilings lowering from MVFR to ifr, will look into it a bit more
by 06z TAF cycle and of course amend tafs prior to this time as
needed.

Hydrology
A pacific storm may bring moderate to heavy rain to areas from
santa cruz county northward for Monday through Wednesday, that
will likely cause rapid rises along area streams, creeks, and
rivers, especially the russian river. An esf has been issued.

Marine As of 3:34 pm pst Saturday... Generally light west winds
will continue tonight. Winds will turn southerly on Sunday and
ramp up early in the week. Light to moderate northwest swell will
persist through the week.

Mtr watches warnings advisories
Tngt None.

Public forecast: palmer
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
AAMC1 - 9414750 - Alameda, CA 8 mi57 min W 5.1 G 8 52°F 52°F1026.2 hPa
OBXC1 9 mi51 min 51°F 42°F
PXOC1 - 9414311 - San Francisco (Pier 1), CA 9 mi51 min WSW 5.1 G 8.9 51°F 1024.9 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 9 mi51 min W 8 G 11
PXSC1 9 mi69 min 53°F 42°F
FTPC1 - 9414290 - San Francisco, CA 10 mi57 min W 8.9 G 12 51°F 53°F1025.9 hPa
LNDC1 10 mi51 min WNW 5.1 G 8.9 52°F 1025.9 hPa
OKXC1 - 9414776 - Oakland (Berth 34), CA 10 mi51 min W 7 G 9.9 51°F 1026 hPa
RTYC1 - 9414523 - Redwood City, CA 14 mi51 min W 7 G 9.9 53°F 52°F1026.2 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 16 mi51 min SSW 5.1 G 7 53°F 1026 hPa
TIBC1 - Tiburon Pier, San Francisco Bay, CA 16 mi58 min SW 5.1 51°F 1026 hPa
RCMC1 - 9414863 - Richmond, CA 18 mi57 min SSW 4.1 G 7 52°F 52°F1025.4 hPa
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 25 mi59 min WNW 5.8 G 7.8 52°F 54°F1026.5 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 27 mi51 min SW 7 G 9.9 52°F 1025.3 hPa
MZXC1 - 9415102 - Martinez-Amorco CA 29 mi51 min WSW 5.1 G 8 52°F 48°F1025.4 hPa40°F
UPBC1 29 mi51 min WSW 7 G 9.9
PCOC1 - 9415144 - Port Chicago, CA 32 mi51 min W 5.1 G 7 52°F 49°F1025.5 hPa
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 37 mi51 min NNE 1.9 G 2.9 54°F 1025.3 hPa
PRYC1 - 9415020 - Point Reyes, CA 39 mi51 min 53°F1025.7 hPa
SFXC1 - San Francisco Bay Reserve, CA 41 mi84 min SSW 1.9 55°F 1025 hPa38°F

Wind History for Alameda, 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
W4
G7
W4
W2
E1
E3
E4
E6
E6
E6
G11
E7
G10
E9
G12
SE7
E5
E5
E4
SE3
SE5
G8
SE5
SE4
SE3
W3
W4
G7
W5
W6
G9
1 day
ago
N8
G14
N9
G15
N10
G14
N9
G14
N16
G21
N13
G21
N8
G17
NW4
G7
N7
G12
N7
G13
N6
G10
E3
E4
E1
G4
E2
SE1
SW4
SW4
SW4
SW3
SE4
W6
SW5
W5
2 days
ago
W12
G16
W8
G13
W7
G11
W6
G10
NW7
G10
W6
G9
NW6
G10
NW9
G15
N9
G17
N8
G20
N11
G14
N10
G15
N8
G11
N6
G9
N8
G11
N8
G12
N7
G12
NW6
W11
G14
NW4
G13
NW8
G23
NW10
G18
N11
G16

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
San Francisco, San Francisco International Airport, CA4 mi13 minW 910.00 miOvercast52°F39°F64%1025.7 hPa
Oakland, Metro Oakland International Airport, CA9 mi16 minWNW 410.00 miMostly Cloudy52°F41°F66%1026.1 hPa
San Carlos Airport, CA12 mi22 minWNW 610.00 miMostly Cloudy54°F41°F63%1025.7 hPa
Hayward, Hayward Air Terminal, CA14 mi15 minWNW 610.00 miA Few Clouds52°F39°F64%1026.8 hPa
Palo Alto Airport, CA19 mi82 minN 1010.00 miMostly Cloudy0°F0°F%1026.1 hPa
Mountain View, Moffett Field, CA24 mi73 minN 1110.00 miMostly Cloudy53°F42°F66%1026.1 hPa

Wind History from SFO (wind in knots)
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
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
Last 24hrCalmCalmE5E3CalmCalmNE4NE4NW8W11W12W10W11W10W9W5SW3S5S4S3SE4SE6CalmCalm
1 day agoNW5NW4NW4N8N10N14N11NW16N15N14N16N21
G26
N15N13N12N16N17N24
G28
N14N12N14N12N11NE9
2 days ago--W16W17W13W17W20W21W17W24
G30
W19
G29
W23
G32
W20
G33
W26
G35
NW20
G28
NW16
G29
W16
G25
W17W12NW10NW5NW5NW6NW9NW7

Tide / Current Tables for Oyster Point Marina, San Francisco Bay, California
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Oyster Point Marina
Click for Map
Sat -- 03:07 AM PST     7.29 feet High Tide
Sat -- 06:49 AM PST     Sunrise
Sat -- 09:15 AM PST     0.89 feet Low Tide
Sat -- 09:36 AM PST     Moonset
Sat -- 03:24 PM PST     6.30 feet High Tide
Sat -- 05:56 PM PST     Sunset
Sat -- 09:21 PM PST     0.93 feet Low Tide
Sat -- 10:56 PM PST     Moonrise
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
45.66.87.375.84.32.71.50.91.123.34.65.76.26.25.44.12.71.611.11.9

Tide / Current Tables for Sierra Point 1.3 mi ENE, South San Francisco Bay, California Current
   EDIT      (on/off)   Help   One Week of Data
Sierra Point 1.3 mi ENE
Click for Map
Sat -- 12:01 AM PST     1.09 knots Max Flood
Sat -- 03:15 AM PST     -0.01 knots Slack
Sat -- 06:18 AM PST     -1.19 knots Max Ebb
Sat -- 06:49 AM PST     Sunrise
Sat -- 09:30 AM PST     0.01 knots Slack
Sat -- 09:36 AM PST     Moonset
Sat -- 12:31 PM PST     0.96 knots Max Flood
Sat -- 03:44 PM PST     -0.00 knots Slack
Sat -- 05:56 PM PST     Sunset
Sat -- 06:40 PM PST     -1.02 knots Max Ebb
Sat -- 09:45 PM PST     0.01 knots Slack
Sat -- 10:56 PM PST     Moonrise
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
1.110.60.1-0.4-0.9-1.2-1.1-0.8-0.30.20.70.90.90.70.4-0.1-0.6-1-1-0.8-0.40.10.5

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 San Francisco Bay Area, 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.