Monday, January21, 2019 L-36.com


Marine Weather and Tides
Pacifica, 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 7:19AMSunset 5:22PM Monday January 21, 2019 9:35 AM PST (17:35 UTC) Moonrise 6:16PMMoonset 7:50AM Illumination 99% Phase: Full Moon; Moon at 16 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
PZZ545 Coastal Waters From Point Reyes To Pigeon Point California Out To 10 Nm- 813 Am Pst Mon Jan 21 2019
.small craft advisory in effect through late tonight...
Today..NW winds 15 to 25 kt. Wind waves 3 to 5 ft. W swell 5 to 7 ft at 11 seconds. Slight chance of showers in the morning.
Tonight..N winds 15 to 25 kt. Wind waves 3 to 5 ft. W swell 5 to 7 ft at 10 seconds.
Tue..N winds 5 to 15 kt. Wind waves 1 to 3 ft. W swell 3 to 5 ft at 10 seconds.
Tue night..N winds 5 to 15 kt. Wind waves 1 to 3 ft. W swell 2 to 3 ft at 16 seconds.
Wed..N winds 5 to 15 kt. Wind waves 1 to 3 ft. W swell 5 to 7 ft at 16 seconds.
Thu..N winds 5 to 15 kt. Wind waves 1 to 3 ft. W swell 5 to 7 ft.
Fri..NE winds 10 kt. Wind waves 2 ft or less. W swell 5 to 7 ft.
...san francisco bar/fourfathom bank forecast..... In the deep water channel...combined seas 6 to 8 ft at 11 seconds. Across the bar...combined seas 7 to 9 at 11 seconds. Maximum ebb current of 3.9 knots at 04:01 pm Monday and 1.9 knots at 05:07 am Tuesday.
PZZ500 813 Am Pst Mon Jan 21 2019
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Gusty northwest winds will persist today across the waters. Winds will become more northerly and diminish over the inner waters later tonight and into tomorrow as high pressure builds over the region. Light to moderate northwest swells will continue throughout the week with no storm systems forecast for the next several days.


7 Day Forecast for Marine Location Near Pacifica, CA
   Hourly   EDIT   Help
location: 37.62, -122.51     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus66 kmtr 211726
afdmtr
area forecast discussion
national weather service san francisco bay area
926 am pst Mon jan 21 2019

Synopsis Residual showers are expected to continue this morning
as a cold upper level low exits the area. Dry conditions are
expected to prevail districtwide by mid morning. Dry weather,
cool overnight temperatures, and progressively warmer days are
then forecast through the end of next weekend as strong high
pressure builds over the west coast.

Discussion As of 08:50 am pst Monday... Lingering showers over
portions of the central coast continue to diminish in coverage
this morning and should come to an end in the next hour or two.

Meanwhile, sky conditions have cleared for much of the san
francisco bay area northward where temperatures cooled in the the
30s for the colder inland valley locations with 40s for the
remainder of the region. Seasonably cool and breezy conditions
will persist today with most locations warming into the 50s. With
this said, the ongoing forecast remains on track and no updates
are anticipated at this time.

Prev discussion As of 3:00 am pst Monday... Kmux continues to
show some shower activity from about santa cruz southward as the
cold upper level trough edges eastward. These residual showers
will persist early but decrease during the morning. By this
afternoon, dry and cool conditions will settle in. Highs today are
expected to be cool and generally in the 50s.

As an upper level ridge begins to build over the eastern pacific,
a surface high will build into the great basin. This will result
in some gusty winds tonight mainly over the north bay mountains
and east bay hills. Strongest winds are anticipated to be limited
to just the higher elevations, thus, a wind advisory isn't
expected to be needed. This gradient will relax on Tuesday, and
high pressure will bring warmer temperatures to the district by
Wednesday, when highs are forecast to warm into the 60s. This
trend will continue through the week with warmest inland areas
likely see highs warming into he 70s. This ridge will remain
anchored along the coast through the week keeping dry conditions
then through the period.

Aviation As of 09:26 am pst Monday... For 18z tafs. Scattered
showers continue to linger around the southern portion of the
region this morning. Expect showers to diminish over the next
couple of hours.VFR conditions through the period with few to sct
clouds today at around 3,000 to 4,000 feet. Winds will ease
throughout the day and tonight turning more N NE overnight.

Vicinity of ksfo...VFR. Gusty W NW winds will diminish throughout
the day and turn N NE overnight. Few to sct clouds today around
4,000 feet.

Sfo bridge approach... Similar to sfo.

Monterey bay terminals... Showers to linger over the next couple of
hours.VFR conditions through the period with few to sct clouds
today around 3,000 to 4,000 feet. Generally light winds through
the period.

Marine As of 08:50 am pst Monday... Gusty northwest winds will
persist today across the waters. Winds will become more northerly
and diminish over the inner waters later tonight and into
tomorrow as high pressure builds over the region. Light to
moderate northwest swells will continue throughout the week with
no storm systems forecast for the next several days.

Mtr watches warnings advisories
Tday Coastal flood advisory... Caz006-505-506-508-509-529-530
sca... Pigeon pt to pt pinos 0-10 nm
sca... Pt pinos to pt piedras blancas 0-10 nm
sca... Pt arena to pigeon pt 10-60 nm
sca... Pigeon pt to pt piedras blancas 10-60 nm
sca... Pt arena to pt reyes 0-10 nm
sca... Pt reyes to pigeon pt 0-10 nm
sca... Mry bay until 3 pm
public forecast: rgass sims
aviation: as
marine: as
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
FTPC1 - 9414290 - San Francisco, CA 13 mi36 min W 4.1 G 12 52°F 54°F1023.3 hPa (+2.7)
PXOC1 - 9414311 - San Francisco (Pier 1), CA 14 mi36 min W 5.1 G 6 52°F 1022 hPa (+2.5)
PXSC1 14 mi36 min 53°F 42°F
AAMC1 - 9414750 - Alameda, CA 15 mi36 min N 5.1 G 8.9 52°F 54°F1023.3 hPa (+2.8)
OBXC1 16 mi36 min 51°F 42°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 16 mi36 min NNW 8 G 9.9 51°F 1023.1 hPa (+2.8)
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 16 mi36 min NNW 8.9 G 12
LNDC1 17 mi36 min NNW 8 G 11 51°F 1023 hPa (+2.7)
RTYC1 - 9414523 - Redwood City, CA 18 mi36 min WNW 8.9 G 12 52°F 55°F1023.5 hPa (+2.4)
TIBC1 - Tiburon Pier, San Francisco Bay, CA 19 mi49 min Calm 52°F 1023 hPa
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 20 mi36 min NW 19 G 23 53°F 56°F1023.6 hPa (+2.5)
PPXC1 - 9414847 - Richmond (Point Potrero), CA 21 mi36 min WNW 4.1 G 6 52°F 1023.3 hPa (+2.6)
RCMC1 - 9414863 - Richmond, CA 22 mi36 min NW 6 G 8 50°F 55°F1022.8 hPa (+2.8)
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 33 mi36 min NW 8 G 11 50°F 1023 hPa (+3.0)
MZXC1 - 9415102 - Martinez-Amorco CA 35 mi36 min W 14 G 16 49°F 52°F1022.8 hPa (+2.9)49°F
PRYC1 - 9415020 - Point Reyes, CA 36 mi36 min 54°F1023.3 hPa (+2.7)
PCOC1 - 9415144 - Port Chicago, CA 39 mi36 min W 13 G 16 49°F 52°F1023 hPa (+3.0)
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 44 mi36 min WNW 8.9 G 14 50°F 1022.4 hPa (+3.1)
SFXC1 - San Francisco Bay Reserve, CA 48 mi111 min WNW 8 44°F 1021 hPa40°F

Wind History for San Francisco, CA
(wind in knots)    EDIT      (on/off)   Help
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
7
AM
8
AM
9
AM
Last
24hr
SW7
G15
SW8
G15
SW9
G14
W8
G13
W10
G17
SW7
G13
SW10
G14
W10
G28
W10
G14
SW3
G10
W10
G17
NW11
G16
NW15
G23
W9
G12
W9
G14
W8
G12
W8
G12
W6
G15
W6
G13
W6
G11
SW3
G6
W4
G8
W4
G8
W4
G11
1 day
ago
N3
NE2
N2
--
--
--
W5
G8
SW3
SE2
SE2
NE2
SW3
--
W1
SW3
NW1
S3
S4
G8
S6
G10
S9
G13
S7
G12
SW6
G15
SW6
G13
S9
G16
2 days
ago
NE5
NE8
N6
SE7
E6
W5
W8
G11
SW5
W4
S2
--
W4
W4
SW3
E5
E2
--
SE3
NE3
E2
NE3
NE2
NE2
NE3

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
San Francisco, San Francisco International Airport, CA8 mi40 minWNW 1510.00 miA Few Clouds58°F42°F56%1022.8 hPa
Half Moon Bay Airport, CA8 mi41 minNNW 15 G 197.00 miFair54°F44°F72%1023.4 hPa
San Carlos Airport, CA15 mi49 minW 710.00 miA Few Clouds52°F44°F77%1023 hPa
Oakland, Metro Oakland International Airport, CA16 mi43 minNW 810.00 miA Few Clouds53°F41°F64%1023.1 hPa
Hayward, Hayward Air Terminal, CA21 mi42 minN 310.00 miFair52°F43°F72%1024 hPa
Palo Alto Airport, CA23 mi49 minW 710.00 miA Few Clouds52°F44°F77%1023.4 hPa

Wind History from HAF (wind in knots)
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
PM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
Last 24hrS9
G16
SW9SW7W11
G16
NW14
G18
W8W12
G18
W14
G21
NW12
G25
NW10NW14
G20
NW12NW18
G26
NW17
G24
NW19
G25
NW19
G25
NW15
G24
N17
G24
N10
G14
NW13
G17
N11
G18
N5N14
G21
N15
G18
1 day agoCalmNW5W5W3NW6W5Calm--CalmNE3NW3CalmCalmCalmCalm--SE6S5S6S7S10S11
G15
--S9
2 days agoS3S5SW4SW6SE5S4--------------------CalmCalmCalmE3S4CalmCalmCalm

Tide / Current Tables for Seaplane Harbor, San Francisco Bay, California
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Seaplane Harbor
Click for Map
Mon -- 12:56 AM PST     6.63 feet High Tide
Mon -- 05:50 AM PST     2.59 feet Low Tide
Mon -- 07:20 AM PST     Sunrise
Mon -- 07:49 AM PST     Moonset
Mon -- 11:39 AM PST     8.54 feet High Tide
Mon -- 05:21 PM PST     Sunset
Mon -- 06:15 PM PST     Moonrise
Mon -- 06:47 PM PST     -1.54 feet Low 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
6.26.66.25.13.82.92.63.14.35.97.38.38.57.86.24.11.8-0.1-1.3-1.5-0.80.52.24

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
Mon -- 12:58 AM PST     -0.00 knots Slack
Mon -- 03:28 AM PST     -0.83 knots Max Ebb
Mon -- 06:00 AM PST     0.00 knots Slack
Mon -- 07:20 AM PST     Sunrise
Mon -- 07:49 AM PST     Moonset
Mon -- 09:06 AM PST     1.00 knots Max Flood
Mon -- 11:59 AM PST     -0.01 knots Slack
Mon -- 03:39 PM PST     -1.78 knots Max Ebb
Mon -- 05:20 PM PST     Sunset
Mon -- 06:15 PM PST     Moonrise
Mon -- 07:01 PM PST     0.00 knots Slack
Mon -- 10:15 PM PST     1.37 knots Max Flood
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
0.6-0-0.5-0.8-0.8-0.5-00.40.810.90.5-0-0.6-1.3-1.7-1.8-1.4-0.8-00.61.11.41.3

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 (12,3,4,5)
      (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.