Wednesday, May22, 2019 L-36.com


Marine Weather and Tides
El Granada, 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 5:53AMSunset 8:19PM Wednesday May 22, 2019 6:31 PM PDT (01:31 UTC) Moonrise 11:06PMMoonset 8:09AM Illumination 84% 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
PZZ545 Coastal Waters From Point Reyes To Pigeon Point California Out To 10 Nm- 232 Pm Pdt Wed May 22 2019
.small craft advisory for rough bar in effect through Thursday evening...
.small craft advisory in effect through late Thursday night...
Rest of today..NW winds 20 to 30 kt. Wind waves 6 to 7 ft. W swell 11 to 13 ft at 12 seconds.
Tonight..NW winds 20 to 30 kt with gusts up to 40 kt. Wind waves 5 to 6 ft. W swell 12 to 14 ft at 12 seconds.
Thu..NW winds 10 to 20 kt with gusts up to 30 kt. Wind waves 3 to 4 ft. W swell 10 to 12 ft at 11 seconds.
Thu night..S winds 10 to 20 kt. Wind waves around 3 ft. NW swell 8 to 10 ft at 11 seconds.
Fri..SW winds 5 to 15 kt. Wind waves 2 ft or less. NW swell 6 to 8 ft at 10 seconds.
Fri night..NW winds 10 to 20 kt with gusts up to 25 kt. Wind waves 3 to 4 ft. NW swell 4 to 6 ft at 10 seconds.
Sat..W winds 20 to 30 kt. Wind waves 4 to 5 ft. NW swell 4 to 6 ft.
Sun..W winds up to 10 kt. Wind waves 2 ft or less. NW swell 3 to 5 ft.
...san francisco bar/fourfathom bank forecast..... In the deep water channel...combined seas 10 to 12 ft with a dominant period of 13 seconds. Across the bar...combined seas 11 to 14 ft with a dominant period of 13 seconds. Maximum ebb current of 1.3 kt at 08:43 pm Wednesday and 2.9 kt at 07:31 am Thursday.
PZZ500 232 Pm Pdt Wed May 22 2019
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... A large, moderate period, late season northwest swell is moving across the waters today. Breakers of up to around 20 feet are possible. In addition, increasing northwest winds with gale force gusts are forecast across the northern and outer waters through the near term. Moderate wind and seas will persist through the end of the week, particularly in the northern outer waters. Hazardous conditions from squared seas will exist after the winds begin to diminish.


7 Day Forecast for Marine Location Near El Granada, CA
   Hourly   EDIT   Help
location: 37.5, -122.48     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus66 kmtr 230016
afdmtr
area forecast discussion
national weather service san francisco bay area
516 pm pdt Wed may 22 2019

Synopsis Temperatures will be on the warming trend through the
remainder of the week, yet will remain below seasonal averages.

Unseasonably cool and unsettled conditions continue into the
upcoming weekend with a renewed chance of rain showers as another
system drops southward across the region.

Discussion As of 01:45 pm pdt Wednesday... Radar has been
switched back to clear air mode for the time being as shower
activity has exited to socal. Satellite imagery shows mostly sunny
skies across the bay area with widespread cumulus clouds from the
south bay southward. Increased sunshine, warmer airmass and lack
of precip has led to warmer temperatures this afternoon with many
locales running 5 to 10 degrees above Tuesday's maximum temps.

Once the Sun sets expect the cumulus to diminish with mainly clear
skies in the heart of the bay area with more clouds likely around
monterey bay. If the higher res models verify overnight, breezy to
gusty NE are forecast over the north and east bay higher terrain.

Gusts over 30 mph are possible.

The longwave pattern keeps a broad upper trough over the region
surprisingly into early next week. Temperatures will warm a few
more degrees on Thursday returning closer to normal. Highs will be
in the 60s to mid 70s. Several models rotate a weak shortwave
around the base of the upper trough Thursday afternoon. There will
likely be enough lift to support a few pop up showers or an
isolated thunderstorm over gabilan range during peak heating.

As noted on the previous discussion additional disturbances
rotate around the trough as well bringing additional precip
chances to the state. A few showers may drift westward in the
forecast area on Friday and early Saturday. Another upper low
takes aim at the bay area again late in the weekend providing a
better chance for precip late Saturday and more so on Sunday. It
doesn't look like a total wash out at this point for the holiday
weekend, but more showery in nature.

Memorial day looks cool with a few isolated showers. Warmer and
drier will develop Tuesday and Wednesday.

Aviation As of 5:13 pm pdt Wednesday... Mid level moisture
wrapping around an upper low over the southwest is causing
afternoon cumulus clouds to form. The clouds are scattered but
there could be small patches where it is bkn. These clouds should
dissipate after dark.

Strong onshore flow on the back side of the upper low will allow
stratus or stratocumulus to form late tonight. Could see sct-bkn
conditions at times over the bay area between 06z and 16z. West
winds gusting to 20 kt through 04z.

Vicinity of ksfo...VFR through the airport evening rush. MVFR
cigs possible over the approach between 12z-16z. West winds
gusting to 20 kt through 04z.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals... Strong onshore flow will allow for early
MVFR cigs. MVFR CIGS after 02z at mry and 04z at sns.

Marine As of 04:39 pm pdt Wednesday... A large, moderate period,
late season northwest swell is moving across the waters today.

Breakers of up to around 20 feet are possible. In addition,
increasing northwest winds with gale force gusts are forecast
across the northern and outer waters through the near term.

Moderate wind and seas will persist through the end of the week,
particularly in the northern outer waters. Hazardous conditions
from squared seas will exist after the winds begin to diminish.

Mtr watches warnings advisories
Tngt High surf advisory... Caz006-505-509-529-530
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
glw... Pt arena to pigeon pt 10-60 nm
sca... Pigeon pt to pt piedras blancas 10-60 nm until 2 pm
glw... Pigeon pt to pt piedras blancas 10-60 nm until 3 am
glw... Pt arena to pt reyes 0-10 nm until 3 am
sca... Rough bar advisory for sf bar
sca... Mry bay
public forecast: mm
aviation: drp
marine: drp
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 14 mi43 min W 12 G 14 65°F 64°F1009.5 hPa
AAMC1 - 9414750 - Alameda, CA 21 mi49 min W 8 G 9.9 64°F 62°F1009 hPa
FTPC1 - 9414290 - San Francisco, CA 21 mi49 min WSW 12 G 16 59°F 58°F1009.1 hPa
46237 - San Francisco Bar, CA (142) 21 mi61 min 58°F10 ft
PXOC1 - 9414311 - San Francisco (Pier 1), CA 21 mi43 min WSW 7 G 13 65°F 1007.6 hPa
PXSC1 21 mi43 min 66°F 54°F
OBXC1 22 mi43 min 65°F 55°F
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 22 mi49 min WSW 7 G 8
LNDC1 23 mi43 min WSW 8.9 G 11 66°F 1008.5 hPa
OKXC1 - 9414776 - Oakland (Berth 34), CA 23 mi43 min W 5.1 G 8 65°F 1008.5 hPa
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 26 mi31 min NW 21 G 25 56°F 57°F1010.1 hPa (-0.9)
TIBC1 - Tiburon Pier, San Francisco Bay, CA 27 mi122 min Calm 68°F 1009 hPa
RCMC1 - 9414863 - Richmond, CA 29 mi49 min WNW 7 G 9.9 69°F 59°F1008.1 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 29 mi43 min SW 6 G 8.9 65°F 1008.8 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 40 mi43 min WSW 5.1 G 8.9 68°F 1007.8 hPa
MZXC1 - 9415102 - Martinez-Amorco CA 41 mi49 min W 12 G 15 68°F 62°F1007.8 hPa51°F
UPBC1 42 mi43 min WNW 13 G 16
PRYC1 - 9415020 - Point Reyes, CA 43 mi43 min 57°F1009.7 hPa
PCOC1 - 9415144 - Port Chicago, CA 45 mi43 min W 13 G 14 68°F 63°F1007.8 hPa
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 49 mi43 min WNW 11 G 14 69°F 1007.4 hPa

Wind History for Redwood City, 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
W15
G20
W16
W17
G22
W16
G20
W17
G23
W19
G25
W18
G24
W14
G20
W16
W11
G16
W16
G21
W10
G13
W7
G10
W7
NW9
NW11
NW7
G10
NW7
G10
NW11
G14
NW11
G14
NW10
G14
W11
W8
G12
W10
G14
1 day
ago
W14
G17
W12
W6
SW5
G9
SW5
G8
S4
G7
S5
G8
SE7
G10
S6
G9
SW4
G7
W9
W7
W4
G7
W6
G9
W6
W9
W13
W16
W15
G20
W18
G24
W19
G26
W21
W14
G18
W19
G26
2 days
ago
W11
SW6
G11
W7
W4
SW1
W4
S1
S1
S2
SW2
SW2
S2
S2
SW3
W6
NW5
G8
--
W9
W8
G13
W11
G14
NW9
G12
W14
G17
W14
G17
SW11
G14

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Half Moon Bay Airport, CA1 mi36 minNNW 12 G 194.00 miPartly Cloudy with Haze57°F53°F88%1010.2 hPa
San Francisco, San Francisco International Airport, CA10 mi35 minW 20 G 2310.00 miMostly Cloudy and Breezy64°F52°F65%1008.8 hPa
San Carlos Airport, CA12 mi41 minW 910.00 miMostly Cloudy66°F50°F56%1009.1 hPa
Palo Alto Airport, CA19 mi44 minNW 1110.00 miMostly Cloudy70°F48°F46%1008.8 hPa
Oakland, Metro Oakland International Airport, CA20 mi38 minWSW 910.00 miMostly Cloudy66°F54°F65%1009 hPa
Hayward, Hayward Air Terminal, CA22 mi37 minW 89.00 miMostly Cloudy63°F53°F70%1009.9 hPa
Mountain View, Moffett Field, CA23 mi35 minNW 910.00 miFair71°F44°F38%1009 hPa

Wind History from HAF (wind in knots)
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
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
Last 24hrNW17
G25
NW17
G27
NW20
G28
NW18
G24
NW17
G25
NW14
G23
NW15
G22
NW16
G21
NW20
G25
NW15
G21
N13
G20
N15
G22
N10
G17
N11
G18
NW12
G16
NW12NW12NW13NW9
G17
NW14NW14
G19
NW17NW13NW12
1 day agoW8W3SW4SW6SW7S12
G15
SW12
G18
W9
G15
NW9NW10
G15
NW10NW17
G24
NW6NW8NW12NW12NW10NW17
G24
NW15
G23
NW15
G22
NW14
G22
NW15
G22
NW19
G25
NW18
G25
2 days agoS3SE3SW3S3E3CalmNE3NE3CalmCalmCalmCalmCalmNW3NW8NW6NW8NW9W7W10W6W8W7W8

Tide / Current Tables for Half Moon Bay, California
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Half Moon Bay
Click for Map
Wed -- 12:46 AM PDT     5.31 feet High Tide
Wed -- 05:55 AM PDT     Sunrise
Wed -- 07:55 AM PDT     -0.84 feet Low Tide
Wed -- 09:09 AM PDT     Moonset
Wed -- 03:16 PM PDT     4.18 feet High Tide
Wed -- 08:04 PM PDT     3.00 feet Low Tide
Wed -- 08:18 PM PDT     Sunset
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
5.25.34.94.12.81.40.2-0.6-0.8-0.50.21.12.23.13.84.24.13.83.43.133.13.54

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 -- 12:42 AM PDT     1.12 knots Max Flood
Wed -- 03:42 AM PDT     -0.00 knots Slack
Wed -- 05:54 AM PDT     Sunrise
Wed -- 07:28 AM PDT     -1.82 knots Max Ebb
Wed -- 09:08 AM PDT     Moonset
Wed -- 11:01 AM PDT     0.01 knots Slack
Wed -- 01:56 PM PDT     1.69 knots Max Flood
Wed -- 05:45 PM PDT     -0.00 knots Slack
Wed -- 08:09 PM PDT     -0.74 knots Max Ebb
Wed -- 08:17 PM PDT     Sunset
Wed -- 11:00 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
11.10.90.4-0.2-0.8-1.4-1.8-1.7-1.3-0.7-00.91.51.71.51.20.6-0.1-0.6-0.7-0.6-0.3-0

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.