Saturday, March25, 2017 L-36.com


Marine Weather and Tides
Daly City, CA

Version 3.4
What's New / NOTES
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 7:02AMSunset 7:28PM Saturday March 25, 2017 4:30 AM PDT (11:30 UTC) Moonrise 4:46AMMoonset 4:05PM Illumination 5% Phase: Waning Crescent; Moon at 27 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 Point Reyes To Pigeon Point To 10 Nm- 310 Am Pdt Sat Mar 25 2017
Today..NW winds 5 to 15 kt. Wind waves 1 to 3 ft. W swell 7 to 8 ft at 13 seconds.
Tonight..NW winds 5 to 15 kt. Wind waves 1 to 3 ft. W swell 8 to 9 ft at 14 seconds.
Sun..W winds 10 kt...becoming south 10 to 20 kt in the afternoon. Wind waves 2 ft or less...becoming 2 to 4 ft in the afternoon. W swell 6 to 7 ft at 13 seconds. Chance of rain.
Sun night..W winds 15 to 25 kt. Wind waves 3 to 5 ft. W swell 5 to 7 ft at 12 seconds. Rain likely in the evening, then showers likely after midnight.
Mon..NW winds 15 to 25 kt. Wind waves 3 to 5 ft. W swell 8 to 10 ft at 11 seconds. Slight chance of showers in the morning.
Tue..NW winds 20 to 30 kt. Wind waves 4 to 6 ft. W swell 9 to 11 ft...becoming 9 to 12 ft.
Wed..NW winds 15 to 25 kt. Wind waves 3 to 5 ft. W swell 8 to 10 ft.
...san francisco bar/fourfathom bank forecast..... In the deep water channel...combined seas 6 to 8 ft with a dominant swell period of 11 seconds. Across the bar...combined seas 7 to 9 feet with a swell period of 11 seconds. Maximum ebb current of 1.6 knots at 01:42 pm Saturday and 1.1 knots at 02:42 am Sunday.
PZZ500 310 Am Pdt Sat Mar 25 2017
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Light winds and moderate seas will prevail across the waters through tonight, aside from south of pt sur and over northern Monterey bay where they are expected to moderately strengthen as the day progresses. Then on Sunday, winds over the northern waters will turn southerly and become somewhat stronger as a weak cold front approaches.

7 Day Forecast for Marine Location Near Daly City, CA
   Hourly   EDIT   Help
location: 37.77, -122.54     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus66 kmtr 250925
afdmtr
area forecast discussion
national weather service san francisco bay area
225 am pdt Sat mar 25 2017

Synopsis A few early morning showers can be expected today,
otherwise mostly dry through early Sunday. Rain chances will
return by Sunday afternoon and continue through Sunday night with
a few showers lingering into early Monday. Otherwise, dry and
mild weather is expected from Monday through the remainder of next
week.

Discussion As of 2:25 am pdt Saturday... Latest radar scans
continue to show light showers moving across monterey and san
benito counties, with another batch of showers forming just off
the san mateo county coast an moving to the east-southeast. Expect
this shower activity to gradually taper off as the system exits
to the east, with only a chance of showers into the morning. The
rest of the day should be mostly dry with highs in the upper 50s
to mid 60s.

The dry weather will persist into early Sunday. Then, a
relatively weak weather system is forecast to move across northern
california bringing more light rain to portions of the district
late Sunday and Sunday night. The 00z GFS brings rain into the
north bay counties by late afternoon, then down to northern
monterey county before midnight. The system is progged to quickly
move through to the east and be gone by dawn. The ECMWF lingers
precip over the southern counties a little longer into Monday, but
for the most part, most of Monday should be dry.

High pressure is then forecast to build in over the west by
Tuesday keeping the district dry through the remainder of the
forecast period. There is a slight possibility of a weak system
brushing extreme northern california by Wednesday night/early
Thursday that may bring a slight chance of precipitation, but for
now most of the rainfall should remain to the north.

Aviation As of 10:55 pm pdt Friday... Residual scattered showers
persist tonight especially over the north central coast. Local
ifr/lifr/vlifr tonight and Saturday morning as the surface to
lower levels remain quite moist. Drying in the mid-upper levels
tonight and Saturday support fog development especially if and
where lower clouds happen to partially clear.

A secondary slow moving and dry cool front slides SE across the bay
area Saturday evening. Preceding this front it's a low confidence
cloud cover forecast though due to a lack of near surface inversions
if there is cloud cover best guess would be that primarily MVFR/vfr
will prevail. Post frontal drier air intrusion should help keepVFR
going Saturday night and Sunday morning.

Vicinity of ksfo... MVFR/vfr. Wind light onshore tonight. 15-20 knots
onshore winds developing Saturday from 21z to 04z Sunday.

Sfo bridge approach... Same as ksfo.

Monterey bay terminals... Light southeast to south winds with showers
continuing most of tonight. MVFR/vfr except local ifr tonight.

Marine As of 10:37 pm pdt Friday... Expect light northwest winds
tonight in the wake of a cool frontal boundary. Southerly winds are
forecast to return Sunday as the next system approaches. Fresh short
period swells will make for choppy conditions over the coastal waters
through the weekend.

Mtr watches/warnings/advisories
Tday None.

Public forecast: sims
aviation: canepa
marine: canepa
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 5 mi42 min WNW 2.9 G 4.1 53°F 56°F1021.2 hPa
46237 - San Francisco Bar, CA (142) 5 mi60 min 56°F8 ft
PXSC1 8 mi42 min 54°F 50°F
OBXC1 11 mi42 min 55°F 50°F
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 11 mi42 min N 9.9 G 12
OKXC1 - 9414776 - Oakland (Berth 34), CA 11 mi42 min NNW 9.9 G 13 54°F 1021 hPa
RCMC1 - 9414863 - Richmond, CA 13 mi42 min NW 6 G 8.9 54°F 57°F1020.7 hPa
AAMC1 - 9414750 - Alameda, CA 13 mi42 min N 7 G 9.9 55°F 58°F1021.3 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 13 mi42 min NW 8 G 11 55°F 1021.2 hPa
LNDC1 14 mi42 min NNW 4.1 G 6 54°F 1020.9 hPa
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 16 mi40 min NW 9.7 G 12 54°F 55°F9 ft1021 hPa (-0.7)
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 25 mi42 min NW 12 G 13 53°F 1020.8 hPa
RTYC1 - 9414523 - Redwood City, CA 25 mi42 min WNW 7 G 8.9 54°F 59°F1020.4 hPa
PRYC1 - 9415020 - Point Reyes, CA 28 mi42 min WNW 5.1 G 6 54°F 56°F1021 hPa
MZXC1 - 9415102 - Martinez-Amorco CA 29 mi42 min W 11 G 13 53°F 58°F1021.2 hPa53°F
UPBC1 29 mi42 min WNW 13 G 15
PCOC1 - 9415144 - Port Chicago, CA 33 mi42 min W 12 G 15 53°F 57°F1020.7 hPa
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA 33 mi40 min NW 9.7 G 14 55°F 55°F8 ft1020.6 hPa (-0.7)
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 39 mi42 min W 6 G 9.9 54°F 1020.6 hPa
SFXC1 - San Francisco Bay Reserve, CA 40 mi105 min WNW 2.9 51°F 1021 hPa

Wind History for San Francisco, CA
(wind in knots)    EDIT      (on/off)   Help
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
12
AM
1
AM
2
AM
3
AM
4
AM
Last
24hr
SE4
SE7
SE7
G12
SE7
G11
SE8
G13
SE5
G10
SE8
G13
SE11
G14
S2
G8
SW5
G9
W3
G6
SW6
G9
SW4
G8
SW4
SW3
W2
SE1
SW1
S2
SW2
SW1
S3
SW4
SW1
1 day
ago
SW2
SW2
SW3
SW3
W3
G6
W6
G10
W5
G11
W6
G10
W6
G14
W8
G13
W4
G12
W7
G13
SW10
G14
W4
G7
SW5
G9
SW3
G8
S3
S3
S4
S4
SE2
G5
SE3
SE3
S4
2 days
ago
W4
W5
G8
NW4
G7
W4
W4
W6
G11
W6
W8
G13
W10
G17
W11
G19
W11
G22
W10
G18
W9
G16
W10
G19
W10
G14
W9
G14
W8
G13
W10
G13
W6
G12
SW5
G8
SW5
G9
W7
G11
W8
G13
W3
G7

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
San Francisco, San Francisco International Airport, CA14 mi34 minW 59.00 miOvercast53°F51°F93%1020.9 hPa
Half Moon Bay Airport, CA18 mi35 minN 49.00 miOvercast50°F48°F94%1021 hPa
Oakland, Metro Oakland International Airport, CA18 mi37 minNNW 410.00 miOvercast55°F53°F93%1021 hPa
San Carlos Airport, CA23 mi35 minNW 510.00 miOvercast54°F51°F94%1021 hPa
Hayward, Hayward Air Terminal, CA24 mi36 minN 310.00 miOvercast55°F48°F77%1021.6 hPa

Wind History from SFO (wind in knots)
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
12
AM
1
AM
2
AM
3
AM
4
AM
Last 24hrSE6SE10SE13SE12SE14SE14SE12SE14SE9NE5E3E8NE4NE3W3W5NW4NW3CalmCalmW4W5NW8W5
1 day agoW11W7W10W8NW10W9W9W13
G16
W10W10W11W11W12SW11SW7SW5SE5S6SE74S8SE8SE4SE4
2 days agoW12W8W6W11NW9W10NW15NW14
G18
W14W17W16W16
G24
W20W20W15
G23
W17
G23
W20
G26
W19W18W16
G22
W13W15W13
G19
W15

Tide / Current Tables for Ocean Beach, outer coast, California
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Ocean Beach
Click for Map
Sat -- 03:41 AM PDT     1.85 feet Low Tide
Sat -- 05:45 AM PDT     Moonrise
Sat -- 07:05 AM PDT     Sunrise
Sat -- 09:32 AM PDT     5.64 feet High Tide
Sat -- 04:02 PM PDT     0.02 feet Low Tide
Sat -- 05:05 PM PDT     Moonset
Sat -- 07:27 PM PDT     Sunset
Sat -- 10:37 PM PDT     5.30 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.23.32.521.92.33.1455.55.653.92.51.20.300.31.12.23.44.55.25.3

Tide / Current Tables for South Channel, San Francisco Bay Approach, California Current
   EDIT      (on/off)   Help   One Week of Data
South Channel
Click for Map
Sat -- 01:49 AM PDT     -1.22 knots Max Ebb
Sat -- 05:00 AM PDT     0.00 knots Slack
Sat -- 05:45 AM PDT     Moonrise
Sat -- 07:05 AM PDT     Sunrise
Sat -- 07:51 AM PDT     1.23 knots Max Flood
Sat -- 11:09 AM PDT     -0.00 knots Slack
Sat -- 02:02 PM PDT     -1.77 knots Max Ebb
Sat -- 05:05 PM PDT     Moonset
Sat -- 05:29 PM PDT     0.01 knots Slack
Sat -- 07:27 PM PDT     Sunset
Sat -- 08:28 PM PDT     1.51 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.5-1.1-1.2-1-0.6-00.61.11.21.10.70.1-0.7-1.5-1.8-1.6-1.1-0.40.41.11.51.51.20.7

Weather Map and Satellite Images
       (on/off)   Help
Weather Map
wmap_P
IR Satellite Image from GEOS
west_satellite

GOES Local Image of CentralWestCoast    EDIT
Geos

Wind Forecast for San Francisco/Monterey Bay Area, CA (7,2,3,4)
      (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.