Wednesday, March29, 2017 L-36.com


Marine Weather and Tides
Foster 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 6:55AMSunset 7:31PM Wednesday March 29, 2017 12:17 AM PDT (07:17 UTC) Moonrise 7:15AMMoonset 8:35PM Illumination 3% Phase: Waxing Crescent; Moon at 2 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
PZZ531 San Francisco Bay South Of The Bay Bridge- 940 Pm Pdt Tue Mar 28 2017
.small craft advisory in effect from Wednesday afternoon through Wednesday evening...
Tonight..NW winds 5 to 15 kt.
Wed..W winds 10 kt...increasing to 15 to 25 kt in the afternoon.
Wed night..W winds 15 to 25 kt.
Thu..NW winds 5 to 15 kt. Slight chance of showers in the morning.
Thu night..NW winds 15 to 25 kt.
Fri..NW winds 15 to 25 kt.
Sat..W winds 10 kt.
Sun..NW winds 5 to 15 kt.
PZZ500 940 Pm Pdt Tue Mar 28 2017
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Gusty northwest winds will continue over the coastal waters into Wednesday. Gusty westerly winds are possible over the bays by Wednesday evening. A cold front will sweep southeastward over the bay area early Thursday morning with a slight chance of showers. Surface high pressure will then build over far northern california Thursday and Friday resulting in near gale force northwest winds over the coastal waters for late week.

7 Day Forecast for Marine Location Near Foster City, CA
   Hourly   EDIT   Help
location: 37.55, -122.24     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus66 kmtr 290359
afdmtr
area forecast discussion
national weather service san francisco bay area
859 pm pdt Tue mar 28 2017

Synopsis A gradual warming trend will continue through
Wednesday as high pressure builds over the region. Cooler and
breezy conditions return on Thursday as a cold front sweeps
through the region. While a few light rain showers will be
possible, most locations will remain dry. The ridge will then
rebuild back over the region late in the week resulting in another
warming trend heading into the upcoming weekend.

Discussion As of 8:59 pm pdt Tuesday... Temperatures finished
off the day an average of 10 degrees warmer than yesterday across
most locations. Highs topped out in the 60s to mid 70s this
afternoon... About 5 to 10 degrees above average under sunny skies.

High pressure situated over the eastern pacific will continue to
ridge across northern california this evening resulting in
continued dry weather, clear skies and moderate to locally gusty
winds across the district. Windiest location persist across the
north and east bay mountains as well as select locations along the
coastal ranges. Temperatures will continue to climb Wednesday as
high pressure prevails. Highs in the mid 60s and 70s with a few
lower 80s expected in the afternoon.

A shift in the pattern is expected late Wednesday night as an
upper level low approaches from the north. The low and associated
cold front will then slides south across the region bringing a
slight chance of precipitation and cooler temperatures to the
area. Models continue to indicate that the greatest rain chances
will remain to the east with only a slight chance over the
forecast area for late Wednesday night into Thursday. Gusty winds
are also expected to accompany this system with strongest winds
anticipated over elevated terrain of the north and east bays as
well as along the coastal ranges. Breezy conditions will continue
into Friday with our local high resolution model indicating a
period of strong northerly winds late Thursday night into Friday
morning in the wake of this system. Strongest winds are expected
between 09z-15z Friday and will again impact the north and east
bay mountains as well as the coastal ranges with coastal waters
also being impacted. Slightly warmer temperatures are expected
Friday.

From previous discussion... High pressure is forecast to rebuild
back across the region late Friday into the upcoming weekend. As a
result, inland areas will rebound back into the 70s and lower 80s
with mostly sunny skies. Medium range guidance suggest dry
weather and seasonably mild temperatures will persist into early
next week as well with the ridge aloft. While confidence this far
out remains low, the models do hint at the potential return to a
wetter pattern late next week.

Aviation As of 5:28 pm pdt Tuesday... Near high confidenceVFR
persists for the evening hours. Late afternoon visible imagery as
well as 24 hour trends indicate warmer and drier conditions all
supporting ongoingVFR; it's a gorgeous spring day out there.

While there's presently an absence of coastal stratus and/or fog
lower level inversions are strengthening under mid-upper level
ridging and there could be a more organized stratus and/or fog
pattern visiting the coastline as early as Wednesday afternoon
and evening. This would precede the passage of a cold front
Thursday morning thus an intrusion of stratus and/or fog is
increasingly likely from later Wednesday evening into Thursday
morning. Just a heads up, following TAF cycles may need to include
more in the way of cigs.

Vicinity of ksfo... Westerly winds 20 to near 30 knots til 05z then
lighter westerly winds forecast for the remainder of tonight. Gusty
westerly winds resume on Wednesday.VFR.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals... Westerly winds occasionally gusting to near
20 knots early this evening, lighter winds quickly returning thereafter.

Vfr except possibly could see local MVFR CIGS near sunrise Wednesday,
otherwise it looks favorable forVFR in 00z TAF cycle. Stratus and/or
fog are possible Wednesday evening and night.

Marine As of 4:41 pm pdt Tuesday... Moderate and gusty northwest
winds will continue through the next several days as high pressure
strengthens over the eastern pacific and tightens the pressure
gradient along the central coast of california. Northwest swell
will slowly decrease some tonight and will continue to through
about Thursday morning before building again late Thursday and
through the weekend.

Mtr watches/warnings/advisories
Tngt Sca... Pt arena to pt reyes 0-10 nm
sca... Pt reyes to pigeon pt 0-10 nm
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... Rough bar advisory for sf bar
sca... Mry bay until 9 pm
public forecast: cw
aviation: canepa
marine: bm
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
RTYC1 - 9414523 - Redwood City, CA 3 mi47 min Calm G 1 58°F 61°F1022 hPa
AAMC1 - 9414750 - Alameda, CA 16 mi47 min WSW 2.9 G 4.1 59°F 60°F1022.8 hPa
LNDC1 17 mi53 min N 4.1 G 5.1 62°F 1022.3 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 18 mi47 min NW 1.9 G 1.9
OBXC1 18 mi47 min 60°F 50°F
PXSC1 19 mi47 min 59°F 51°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 19 mi53 min 59°F 1022.4 hPa
FTPC1 - 9414290 - San Francisco, CA 21 mi47 min SSW 2.9 G 5.1 56°F 56°F1022.6 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 25 mi47 min N 4.1 G 5.1 64°F 1022.6 hPa
46237 - San Francisco Bar, CA (142) 26 mi47 min 56°F9 ft
RCMC1 - 9414863 - Richmond, CA 27 mi47 min N 1.9 G 1.9 61°F 58°F1022.1 hPa
UPBC1 34 mi47 min W 8.9 G 11
MZXC1 - 9415102 - Martinez-Amorco CA 34 mi47 min WSW 6 G 8 60°F 57°F1022.5 hPa47°F
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 35 mi87 min NW 18 G 19 56°F 55°F10 ft1022.5 hPa (+0.5)
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 35 mi47 min SW 2.9 G 4.1 59°F 1022.2 hPa
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA 36 mi87 min NW 23 G 27 57°F 56°F13 ft1021.8 hPa (+0.0)
PCOC1 - 9415144 - Port Chicago, CA 37 mi47 min SSW 6 G 9.9 58°F 58°F1021.9 hPa
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 39 mi47 min W 7 G 11 65°F 1021.5 hPa
SFXC1 - San Francisco Bay Reserve, CA 46 mi92 min W 1 57°F 1021 hPa50°F

Wind History for Redwood City, CA
(wind in knots)    EDIT      (on/off)   Help
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
12
AM
Last
24hr
W5
SW2
SW4
SW3
S3
NW4
W2
SW3
NW6
NW4
NW8
N3
G7
NW12
G15
NW12
W12
G15
W14
W14
W11
G14
W15
G19
W7
G10
NW5
SW1
G4
SW2
SW2
1 day
ago
W8
G11
W8
W5
G9
W6
W7
W6
W7
W6
W9
NW10
G13
NW14
NW13
G16
NW14
G17
W17
W16
G22
W15
W17
W18
W17
G23
W13
G16
W14
G18
NW8
W4
W6
G9
2 days
ago
S3
SE2
SE2
S3
S2
SE4
E4
E7
G10
NE7
G10
NE6
S2
S5
G8
S6
G12
S8
G13
SE5
G11
S10
G15
SW6
G10
W9
G13
W9
G12
W6
G10

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
San Carlos Airport, CA1 mi22 minN 010.00 miFair57°F44°F63%1023 hPa
Palo Alto Airport, CA8 mi3.5 hrsNW 810.00 miPartly Cloudy59°F46°F63%1022 hPa
San Francisco, San Francisco International Airport, CA8 mi21 minW 710.00 miA Few Clouds58°F45°F62%1022.6 hPa
Oakland, Metro Oakland International Airport, CA10 mi24 minW 310.00 miFair59°F53°F81%1022.6 hPa
Hayward, Hayward Air Terminal, CA10 mi23 minN 010.00 miFair58°F46°F67%1023.4 hPa
Mountain View, Moffett Field, CA13 mi21 minN 010.00 miFair58°F45°F62%1023.1 hPa
Half Moon Bay Airport, CA14 mi22 minENE 37.00 miFair52°F44°F77%1023 hPa
San Jose, San Jose International Airport, CA21 mi24 minE 410.00 miFair57°F46°F69%1022.6 hPa

Wind History from SQL (wind in knots)
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
12
AM
Last 24hrNW5W4CalmW3CalmCalmW3CalmNW4CalmNW7NW7
G17
NW8
G14
NW13
G17
NW10NW15W14
G20
W11W11
G17
W9W8NW4CalmCalm
1 day agoW5W5W4W3W3W4W4NW4W8NW9NW12NW11
G17
W12
G16
W14
G19
W15
G20
W15
G20
W14W15
G19
W15W13
G16
W13W13
G17
NW5W3
2 days agoSW3SW3S3CalmCalmCalmCalm43445E7NE6NE4SW7S8S8SW10
G16
SW13S7W8NW6W7

Tide / Current Tables for Bay Slough, west end, San Francisco Bay, California
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Bay Slough
Click for Map
Wed -- 01:52 AM PDT     8.04 feet High Tide
Wed -- 06:58 AM PDT     Sunrise
Wed -- 08:14 AM PDT     Moonrise
Wed -- 08:30 AM PDT     0.01 feet Low Tide
Wed -- 02:28 PM PDT     7.31 feet High Tide
Wed -- 07:29 PM PDT     Sunset
Wed -- 08:40 PM PDT     0.82 feet Low Tide
Wed -- 09:35 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
6.27.687.56.24.42.50.90.10.21.22.84.66.27.27.26.453.41.910.91.83.4

Tide / Current Tables for San Mateo Bridge, South San Francisco Bay, California Current
   EDIT      (on/off)   Help   One Week of Data
San Mateo Bridge
Click for Map
Wed -- 02:49 AM PDT     -0.00 knots Slack
Wed -- 06:08 AM PDT     -1.93 knots Max Ebb
Wed -- 06:58 AM PDT     Sunrise
Wed -- 08:14 AM PDT     Moonrise
Wed -- 09:10 AM PDT     0.01 knots Slack
Wed -- 11:59 AM PDT     2.03 knots Max Flood
Wed -- 03:30 PM PDT     -0.00 knots Slack
Wed -- 06:33 PM PDT     -1.63 knots Max Ebb
Wed -- 07:29 PM PDT     Sunset
Wed -- 09:24 PM PDT     0.00 knots Slack
Wed -- 09:35 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.91.50.8-0.1-0.9-1.6-1.9-1.7-1-0.20.91.721.81.30.5-0.4-1.1-1.6-1.6-1-0.30.51.4

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 (3,6,7,8)
      (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.