Thursday, August17, 2017 L-36.com


Marine Weather and Tides
Ladera, CA

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
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.

Sunrise 6:25AMSunset 7:59PM Wednesday August 16, 2017 10:50 PM PDT (05:50 UTC) Moonrise 12:15AMMoonset 2:40PM Illumination 26% Phase: Waning Crescent; Moon at 25 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 San Francisco Bay North Of The Bay Bridge- 856 Pm Pdt Wed Aug 16 2017
.small craft advisory in effect from Thursday afternoon through Thursday evening...
Tonight..SW winds 10 to 20 kt.
Thu..SW winds 5 to 15 kt...increasing to 15 to 25 kt in the afternoon.
Thu night..SW winds 15 to 25 kt.
Fri..SW winds 15 to 25 kt.
Fri night..SW winds 15 to 25 kt.
Sat..SW winds 5 to 15 kt.
Sun..SW winds 5 to 15 kt.
Mon..SW winds 5 to 15 kt.
PZZ500 856 Pm Pdt Wed Aug 16 2017
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... A weak low pressure trough along the california coast will keep light winds over the coastal waters through Thursday. Northwest winds will increase over the offshore waters late in the week and into the weekend as high pressure strengthens offshore.

7 Day Forecast for Marine Location Near Ladera, CA
   Hourly   EDIT   Help
location: 37.4, -122.21     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus66 kmtr 170258
afdmtr
area forecast discussion
national weather service san francisco bay area
758 pm pdt Wed aug 16 2017

Synopsis A gradual inland warming trend can be expected through
late week as high pressure builds over the region. Overnight and
morning clouds will also be common, especially near the coast and in
the adjacent valleys.

Discussion As of 7:58 pm pdt Wednesday... Per 24 hour comparison
temperatures are for the most part warmer, as much as 10 to 12
degrees warmer in the east bay and dewpoint temperatures are
higher everywhere, in the mid to upper 50s. Along the immediate
coastline however, air temperatures are very close to what they
were yesterday at this hour. Higher dewpoint temperatures indicate
more water vapor in the air particularly air that is in contact
with chilly sea surface temperatures is resulting in widespread
stratus and fog over the coastal waters. The marine layer inversion
continues to strengthen this evening presently based near 2,000
feet, onshore summer breezes will bring stratus and fog inland
tonight and Thursday morning.

It was a typical summer day weather-wise with the usual clearing in
the morning followed by returning stratus and fog this evening.

Average temperatures today were not far from normal for mid august,
departures ranged from -2 degrees to +4 degrees.

As discussed earlier the marine layer will tend to compress into
late week as an eastern pacific mid-upper level high strengthens
over norcal. By the weekend upper level troughing will return. Dry
weather is generally expected through the forecast period.

Prev discussion As of 01:52 pm pdt Wednesday... Temperatures across
the region are generally running a few to several degrees warmer
compared to this time yesterday as clouds cleared out more quickly
and high pressure builds in from the eastern pacific. While low
clouds will likely return to the coast and spread inland again
tonight, they will likely be less widespread compared to previous
days. In addition, the inland warming trend will likely continue
through late week as 850 mb temperatures increase.

With the ridge building in from the eastern pacific through late
week, should see the marine layer compress a bit more and result in
less inland penetration of stratus during the overnight and early
morning hours, especially by Thursday and Friday. Afternoon
temperatures will also rebound to near seasonal averages with 60s to
70s at the coast and 80s to 90s inland. Similar conditions are
likely heading into Saturday as well.

Another mid upper level trough and associated low is forecast to
drop down the west coast late in the upcoming weekend. This will
likely help to cool conditions inland back to below seasonal
averages by Sunday and into early next week. However, this type of
pattern could either help deepen the marine layer and result in more
widespread cloud cover or help to mix conditions out and result in
more sunshine near the coast. Thus, we will have to closely monitor
the latest forecast models as we approach the upcoming weekend.

Regardless, dry weather conditions are generally expected to persist
region-wide through the extended forecast.

Aviation As of 4:45 pm pdt Wednesday... Marine layer
remains deep at around 2500 feet but is compressing as an upper
level ridge builds off the coast. A south to southeast flow has
pushed the low clouds out to sea today. This will result in a
later return of low clouds into the sfo bay area tonight.

Vicinity of ksfo...VFR through the airport evening rush. MVFR
ceilings after 09z. West winds to 13-15 kt decreasing after 04z.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals... Clear over the mry bay area today with low
clouds sitting over the outer part of mry bay. These clouds could
quickly rush in when the winds switches back to onshore but the
challenge will be the timing. Ifr CIGS expected to spread inland
after 02z but it could be later than that.

Marine As of 4:45 pm pdt Wednesday... A weak low pressure
trough near the california coast will maintain light winds over
the coastal waters through Thursday. Northwest winds will increase
over the offshore waters late in the week and into the weekend as
high pressure strengthens offshore.

Mtr watches warnings advisories
Tngt Sca... Sf bay until 9 pm
public forecast: canepa
aviation: W pi
marine: dykema
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 7 mi51 min WNW 5.1 G 6 64°F 72°F1014.2 hPa (+1.4)
AAMC1 - 9414750 - Alameda, CA 26 mi51 min W 7 G 13 62°F 69°F1015.4 hPa (+1.0)
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 28 mi51 min W 8.9 G 12
LNDC1 28 mi51 min W 6 G 8 62°F 1015 hPa (+1.1)
PXOC1 - 9414311 - San Francisco (Pier 1), CA 29 mi51 min WSW 9.9 G 14 61°F 1013.9 hPa (+1.1)
OKXC1 - 9414776 - Oakland (Berth 34), CA 29 mi51 min W 11 G 13 62°F 1014.9 hPa (+1.0)
OBXC1 29 mi51 min 62°F 58°F
PXSC1 30 mi51 min 62°F 58°F
FTPC1 - 9414290 - San Francisco, CA 31 mi51 min WSW 7 G 9.9 60°F 60°F1015.4 hPa (+1.3)
46237 - San Francisco Bar, CA (142) 35 mi51 min 58°F5 ft
TIBC1 - Tiburon Pier, San Francisco Bay, CA 36 mi49 min WSW 8 60°F 1015 hPa
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA 36 mi61 min S 5.8 G 7.8 61°F 61°F8 ft1014.9 hPa (+1.0)
PPXC1 - 9414847 - Richmond (Point Potrero), CA 36 mi51 min SW 13 G 16 62°F 1015 hPa (+1.2)
RCMC1 - 9414863 - Richmond, CA 38 mi51 min SW 6 G 9.9 61°F 63°F1014.7 hPa (+1.3)
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 41 mi61 min S 3.9 G 5.8 60°F 58°F5 ft1015.4 hPa (+1.0)
MZXC1 - 9415102 - Martinez-Amorco CA 44 mi51 min W 16 G 20 63°F 69°F1014.3 hPa (+1.7)59°F
46042 - MONTEREY - 27NM West of Monterey Bay, CA 44 mi61 min S 1.9 G 3.9 61°F 60°F6 ft1015.8 hPa (+1.1)
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 45 mi51 min WSW 12 G 14 63°F 1014.2 hPa (+1.7)
46092 - MBM1 46 mi109 min S 3.9 60°F 59°F1015.2 hPa (+0.4)
PCOC1 - 9415144 - Port Chicago, CA 46 mi51 min WSW 16 G 22 64°F 71°F1013.5 hPa (+1.4)
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 47 mi51 min WNW 14 G 18 67°F 1012.9 hPa (+1.6)
46114 - West Monterey Bay, CA 47 mi51 min 59°F6 ft
ELXC1 - Elkhorn Slough Reserve, CA 48 mi66 min NW 1 60°F 1015 hPa58°F

Wind History for Redwood City, CA
(wind in knots)    EDIT      (on/off)   Help
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
6
PM
7
PM
8
PM
9
PM
10
PM
Last
24hr
W5
W5
SW4
--
SE1
S1
S2
S2
S2
SE1
SE4
E4
E5
G8
NE4
G7
N5
G10
N8
G11
N10
G14
NW10
NW8
G11
N11
G15
NW9
NW8
NW7
W5
1 day
ago
W14
W13
G16
W10
W8
W6
W5
W5
S2
W4
W3
W3
NW5
G9
W9
G12
W11
G15
W16
W14
G17
W15
W17
G23
W13
G19
W10
W9
W7
G11
NW6
W4
2 days
ago
NW11
SW7
G11
W14
W10
W5
W15
W15
G19
W18
G22
W17
G21
W16
W20
W21
G27
W15
G24
W15
W12
G18
SW14
G19
W11
G14
SW8
G14

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Palo Alto Airport, CA7 mi2.1 hrsNNW 910.00 miClear66°F60°F83%1013.9 hPa
San Carlos Airport, CA9 mi61 minW 410.00 miFair64°F55°F73%1014.9 hPa
Mountain View, Moffett Field, CA9 mi1.9 hrsN 910.00 miFair66°F59°F78%1014.6 hPa
San Jose, San Jose International Airport, CA15 mi58 minWNW 610.00 miFair65°F57°F78%1014.7 hPa
San Francisco, San Francisco International Airport, CA17 mi55 minWNW 710.00 miA Few Clouds63°F55°F76%1014.6 hPa
Half Moon Bay Airport, CA17 mi56 minSSE 75.00 miFog/Mist59°F57°F94%1014.9 hPa
Hayward, Hayward Air Terminal, CA19 mi57 minNNW 810.00 miFair62°F54°F75%1015.8 hPa
San Jose / Reid / Hillv, CA21 mi61 minN 010.00 miClear66°F57°F73%1015.6 hPa
Oakland, Metro Oakland International Airport, CA21 mi58 minWNW 810.00 miA Few Clouds61°F57°F90%1014.8 hPa

Wind History from PAO (wind in knots)
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
6
PM
7
PM
8
PM
9
PM
Last 24hr------------------5SW7--SE7E10--N8N10NW12N14N14N14N12NW12N9
1 day ago------------------SW8SW7SW7----SW8SW5SW8SW8W8W8NW16NW14NW13NW5
2 days ago------------------W5W8W6--S7SW7NW8NW8SW12N15NW12NW12W8NW10W8

Tide / Current Tables for Redwood City, Wharf 5, San Francisco Bay, California (sub)
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Redwood City
Click for Map
Thu -- 02:07 AM PDT     Moonrise
Thu -- 03:39 AM PDT     0.07 feet Low Tide
Thu -- 06:26 AM PDT     Sunrise
Thu -- 10:22 AM PDT     6.52 feet High Tide
Thu -- 03:20 PM PDT     2.70 feet Low Tide
Thu -- 04:43 PM PDT     Moonset
Thu -- 07:58 PM PDT     Sunset
Thu -- 09:15 PM PDT     9.41 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.42.510.20.10.71.83.24.65.86.56.45.64.43.32.72.93.95.47.18.69.49.28.2

Tide / Current Tables for Dumbarton Point 2.3 mi NE, South San Francisco Bay, California Current
   EDIT      (on/off)   Help   One Week of Data
Dumbarton Point 2.3 mi NE
Click for Map
Thu -- 01:33 AM PDT     -1.30 knots Max Ebb
Thu -- 02:06 AM PDT     Moonrise
Thu -- 04:32 AM PDT     0.01 knots Slack
Thu -- 06:26 AM PDT     Sunrise
Thu -- 07:19 AM PDT     1.27 knots Max Flood
Thu -- 10:36 AM PDT     -0.00 knots Slack
Thu -- 02:13 PM PDT     -0.61 knots Max Ebb
Thu -- 04:21 PM PDT     0.00 knots Slack
Thu -- 04:42 PM PDT     Moonset
Thu -- 06:58 PM PDT     1.04 knots Max Flood
Thu -- 07:57 PM PDT     Sunset
Thu -- 09:53 PM PDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-1.1-1.3-1.2-0.9-0.40.411.31.20.90.4-0.1-0.4-0.5-0.6-0.5-0.20.40.910.90.5-0-0.5

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 (1,6,7,8)
      (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.