Sunday, July23, 2017 L-36.com


Marine Weather and Tides
Kensington, 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 6:03AMSunset 8:27PM Saturday July 22, 2017 11:58 PM PDT (06:58 UTC) Moonrise 4:19AMMoonset 6:57PM Illumination 0% Phase: New Moon; Moon at 29 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- 859 Pm Pdt Sat Jul 22 2017
.small craft advisory in effect until 11 pm pdt this evening...
.small craft advisory in effect from Sunday afternoon through Sunday evening...
Tonight..SW winds 5 to 15 kt.
Sun..SW winds 5 to 15 kt...increasing to 15 to 25 kt in the afternoon.
Sun night..SW winds 10 to 20 kt.
Mon..SW winds 10 to 20 kt.
Mon night..SW winds 10 to 20 kt.
Tue..SW winds 10 to 20 kt.
Wed..SW winds 10 kt.
Thu..SW winds 10 kt.
PZZ500 859 Pm Pdt Sat Jul 22 2017
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... High pressure over the eastern pacific will shift to the northwest as a thermal trough extends towards the central coast of california. Winds will begin to decrease for most of the coastal waters. The northern outer waters, however, will remain gusty through the weekend.

7 Day Forecast for Marine Location Near Kensington, CA
   Hourly   EDIT   Help
location: 37.9, -122.28     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus66 kmtr 230554
afdmtr
area forecast discussion
national weather service san francisco bay area
1054 pm pdt Sat jul 22 2017

Synopsis Temperatures will begin to moderate on Sunday as a
weak upper level trough begins to develop off our coast. A more
pronounced cooling trend appears on tap for the first part of next
week, with a deepening marine layer and increased onshore flow.

But then by the latter part of the week, high pressure looks to
build back in again resulting in a return to warming temperatures.

Aside from some possible coastal drizzle, no precipitation is
presently expected in our area through the forecast period.

Discussion As of 9:00 pm pdt Saturday... Warming occurred at
nearly all locations throughout our forecast area today as high
pressure aloft strengthened over california. The sharpest increase
in temperatures occurred in the east bay valleys and locally
across interior portions of san mateo county. In these areas highs
today were as much as 15 degrees above those of yesterday. A few
locations in the east bay reached 100 this afternoon, as well as
several locations across interior monterey county and san benito
county.

A cooling trend will get underway on Sunday for much of our
forecast area, as high pressure aloft begins to retreat to the
east and a weak upper low develops off the northern california
coast. Winds aloft have already turned southerly, and surface
winds are also expected to gradually shift to the south by Sunday,
and then increase on Monday as a surface low develops just off
the coast of the north bay. Cooling on Sunday will be most
pronounced in areas that have greatest exposure to marine air
influence under southerly flow (e.G., north bay valleys, big sur
coast, santa cruz). Valleys farthest inland and locations in the
hills above 1000 feet will remain very warm on Sunday and
experience only slight cooling. Cooling will spread farther inland
and to higher elevations on Monday as the marine layer deepens.

Meanwhile, locations with terrain to the south (e.G., monterey,
san jose) will see less cooling the next few days due to downslope
warming effects.

Low clouds had cleared from the coast from monterey bay northward
by early evening. Skies are currently mostly clear except for a
band of high clouds moving from south to north through the bay
area. Models indicate that low clouds and patchy fog will develop
along much of our coastline by late tonight, but clouds fog
should mostly remain confined to coastal areas. Then, as the
marine layer deepens by Sunday night, low clouds will begin to
develop farther inland.

Mid and upper level moisture to our south is forecast to advance
northward over the next 24 hours. However, the flow aloft is
expected to have enough of a westerly component over our area to
deflect the bulk of this moisture to our east. Therefore, there is
virtually no chance that high-based convection will develop in
our area anytime soon, except for a very slim chance in the far
southeastern portion of our forecast area.

Temperatures for most inland areas are expected to be slightly
cooler than normal for Monday and Tuesday. By midweek the upper
low near the northern california coast is forecast to move off to
our east, allowing upper level ridging to once again strengthen
over our area. This will mean a warming trend for most areas
during the second half of the week.

Tropical storm hillary has recently developed off the southwest
coast of mexico. This storm is forecast to track to the northwest
and, according to some GFS ensemble members (and operational 18z
gfs), remnants of this tropical system may end up approaching the
california coast by day 10.

Aviation As of 10:30 pm pdt Saturday... Upper level high over
the southwestern us extending to california brought a very warm
airmass to the district. The marine layer is shallow at around
1000 feet. The east-west component of the onshore gradient is
weaker than yesterday. As a result stratus is expected to be
confined to the coastal areas with little inland penetration
except through the golden gate to oak. Clouds in northern mry bay
expected to spread into southern mry bay 08-10z.

Vicinity of ksfo...VFR. West winds to 15 kt through 04z.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals...VFR. Ifr for CIGS vsby after 08-10z
clearing by 17z.

Marine As of 10:45 pm pdt Saturday... High pressure over the
eastern pacific will shift to the northwest as a thermal trough
extends towards the central coast of california. Winds will begin
to decrease for most of the coastal waters. The northern outer
waters, however, will remain gusty through the weekend.

Mtr watches warnings advisories
Tngt Sca... Pt arena to pigeon pt 10-60 nm
sca... Sf bay until 11 pm
sca... Pigeon pt to pt piedras blancas 10-60 nm until 3 am
public forecast: dykema
aviation: W pi
marine: W pi S sims
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
PPXC1 - 9414847 - Richmond (Point Potrero), CA 5 mi46 min S 13 G 15 59°F 1011.3 hPa
OBXC1 7 mi46 min 61°F 55°F
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 7 mi52 min W 1.9 G 4.1
LNDC1 7 mi46 min NNE 2.9 G 5.1 62°F 1011.1 hPa
RCMC1 - 9414863 - Richmond, CA 7 mi46 min S 9.9 G 13 60°F 64°F1010.7 hPa
OKXC1 - 9414776 - Oakland (Berth 34), CA 7 mi46 min NW 1.9 G 2.9 61°F 1011.2 hPa
AAMC1 - 9414750 - Alameda, CA 9 mi46 min WNW 4.1 G 5.1 63°F 67°F1011.6 hPa
PXOC1 - 9414311 - San Francisco (Pier 1), CA 9 mi46 min WSW 1.9 G 4.1 61°F 1010.2 hPa
PXSC1 9 mi46 min 62°F 54°F
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 11 mi46 min W 8 G 9.9 69°F 1009.7 hPa
FTPC1 - 9414290 - San Francisco, CA 12 mi46 min SW 2.9 G 5.1 56°F 57°F1011.7 hPa
MZXC1 - 9415102 - Martinez-Amorco CA 12 mi46 min WNW 5.1 G 5.1 74°F 71°F1010.2 hPa58°F
PCOC1 - 9415144 - Port Chicago, CA 17 mi46 min W 8.9 G 9.9 74°F 72°F1009.7 hPa
46237 - San Francisco Bar, CA (142) 20 mi88 min 56°F3 ft
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 23 mi46 min W 8.9 G 13 83°F 1009.1 hPa
SFXC1 - San Francisco Bay Reserve, CA 25 mi73 min W 6 71°F 1009 hPa55°F
RTYC1 - 9414523 - Redwood City, CA 27 mi46 min NW 4.1 G 5.1 66°F 73°F1010.7 hPa
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 31 mi68 min W 5.8 G 7.8 55°F 55°F4 ft1011.4 hPa (+0.0)
PRYC1 - 9415020 - Point Reyes, CA 38 mi46 min W 8.9 G 9.9 60°F 53°F1011 hPa
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA 49 mi68 min WNW 5.8 G 7.8 57°F 57°F4 ft1011.5 hPa (+0.3)

Wind History for Point Potrero Richmond, CA
(wind in knots)    EDIT      (on/off)   Help
11
PM
12
AM
-12
PM
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
S14
S13
G18
SW11
G15
SW10
G15
SW9
G13
SW10
G13
SW11
G14
SW12
SW7
SW6
SW9
SW8
SW9
G13
SW10
G13
S8
G11
SW10
SW8
G14
SW9
G12
S9
S13
S6
G9
S7
G10
SW13
1 day
ago
S13
SE10
G16
SE10
G13
SE9
G12
S13
G16
S12
G15
S12
G16
S10
G13
S12
S10
S12
S10
G13
S7
G10
SW11
G15
SW13
G19
SW13
G19
S17
G21
S20
S21
S21
S20
S19
S17
S13
2 days
ago
S12
S12
G15
SE8
G12
SE11
G15
S9
G12
S10
S11
G15
S16
S15
S16
S18
G22
S20
S14
G18
S13
S14
SE9
G14

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Concord, Buchanan Field, CA13 mi65 minSW 410.00 miFair80°F53°F39%1008.7 hPa
Oakland, Metro Oakland International Airport, CA14 mi65 minNW 410.00 miA Few Clouds65°F55°F73%1011.1 hPa
Hayward, Hayward Air Terminal, CA19 mi64 minNNW 510.00 miFair67°F51°F57%1011.7 hPa
San Francisco, San Francisco International Airport, CA20 mi2 hrsW 1010.00 miA Few Clouds62°F52°F70%1010.7 hPa
Napa, Napa County Airport, CA21 mi64 minSSW 410.00 miFair68°F57°F68%1009.6 hPa
Novato / Gnoss Field, CA22 mi83 minN 610.00 miFair61°F53°F77%1010.8 hPa

Wind History from CCR (wind in knots)
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
Last 24hrSW11S11W3SW3CalmCalmN3CalmCalmCalmNW4N7N6NW7NW8NW11NW10NW10NW11NW10NW8W7SW8SW4
1 day agoS15S15S15S11S12S11S13S13S12S9S5S6NW11NW9NW10NW10W8W10W8S11S10S10S13SW9
2 days agoS13
G19
S15S15S15S13
G20
S12S14S15S11SW12S11S10S11S8SW7W8W10SW9SW9S13S12S13S15S12
G21

Tide / Current Tables for Point Isabel, San Francisco Bay, California
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Point Isabel
Click for Map
Sun -- 02:47 AM PDT     New Moon
Sun -- 06:05 AM PDT     Sunrise
Sun -- 06:26 AM PDT     Moonrise
Sun -- 06:37 AM PDT     -1.36 feet Low Tide
Sun -- 01:37 PM PDT     5.43 feet High Tide
Sun -- 06:31 PM PDT     2.23 feet Low Tide
Sun -- 08:25 PM PDT     Sunset
Sun -- 08:47 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
7.16.55.13.21.3-0.3-1.2-1.3-0.70.41.83.24.55.35.44.83.92.92.32.32.93.95.16.2

Tide / Current Tables for Berkeley Yacht Harbor, California Current
   EDIT      (on/off)   Help   One Week of Data
Berkeley Yacht Harbor
Click for Map
Sun -- 12:35 AM PDT     -0.00 knots Slack
Sun -- 02:47 AM PDT     New Moon
Sun -- 03:32 AM PDT     -0.40 knots Max Ebb
Sun -- 06:05 AM PDT     Sunrise
Sun -- 06:26 AM PDT     Moonrise
Sun -- 07:06 AM PDT     0.00 knots Slack
Sun -- 10:29 AM PDT     0.44 knots Max Flood
Sun -- 02:09 PM PDT     -0.00 knots Slack
Sun -- 04:09 PM PDT     -0.18 knots Max Ebb
Sun -- 06:51 PM PDT     0.00 knots Slack
Sun -- 08:25 PM PDT     Sunset
Sun -- 08:47 PM PDT     Moonset
Sun -- 10:11 PM PDT     0.35 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.1-0.1-0.3-0.4-0.4-0.3-0.2-00.20.30.40.40.40.20-0.1-0.2-0.2-0.100.20.30.40.3

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 (2,6,7,8)
      (on/off)   Help

Ground Weather Radar Station Sacramento, 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.