Thursday, October18, 2018 L-36.com


Marine Weather and Tides
Pescadero, 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 7:18AMSunset 6:27PM Thursday October 18, 2018 7:51 PM PDT (02:51 UTC) Moonrise 2:41PMMoonset 12:24AM Illumination 71% Phase: Waxing Gibbous; Moon at 9 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
PZZ560 Pigeon Point To Point Pinos To 10 Nm- 238 Pm Pdt Thu Oct 18 2018
Tonight..N winds 5 to 15 kt. Wind waves 1 to 3 ft. W swell 4 to 6 ft at 14 seconds and sw 3 ft at 15 seconds.
Fri..NW winds 5 to 15 kt. Wind waves 1 to 3 ft. NW swell 4 to 5 ft at 13 seconds.
Fri night..NW winds 10 to 20 kt. Wind waves 2 to 4 ft. NW swell 3 to 5 ft at 12 seconds.
Sat..NW winds 5 to 15 kt. Wind waves 1 to 3 ft. NW swell 3 to 4 ft at 12 seconds.
Sat night..NW winds 5 to 15 kt. Wind waves 1 to 3 ft. NW swell 2 to 3 ft at 12 seconds.
Sun..NW winds 10 to 20 kt. Wind waves 2 to 4 ft. NW swell 2 to 4 ft.
Mon..NW winds 10 kt. Wind waves 2 ft or less. NW swell 3 to 4 ft.
Tue..NW winds 10 kt. Wind waves 2 ft or less. NW swell 2 to 4 ft.
PZZ500 238 Pm Pdt Thu Oct 18 2018
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Light nw winds will continue overnight into Friday as a long period nw swell moves through the waters. SWell will slowly decrease over the weekend with continued light nw winds. A quiet pattern continues into early next week.


7 Day Forecast for Marine Location Near Pescadero, CA
   Hourly   EDIT   Help
location: 37.18, -122.39     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus66 kmtr 182326
afdmtr
area forecast discussion
national weather service san francisco bay area
426 pm pdt Thu oct 18 2018

Synopsis A slight warming trend is forecast through the upcoming
weekend as high pressure builds over the region. Dry weather
conditions are also likely to prevail through the weekend. A pattern
change will result in cooling conditions early next week that will
persist through late week with a slight chance of precipitation
developing over the north bay.

Discussion As of 01:54 pm pdt Thursday... The forecast in the
short-term will continue to be defined by a marine layer of around
1,000 feet in place and generally weak onshore flow over the
region. This will allow for low clouds to return to the coast
tonight and spread locally inland during the early morning hours
on Friday. Cloud cover will be similar to or slightly less
widespread than last night this morning.

A slight warming trend is then forecast during the day Friday and
again on Saturday as onshore flow diminishes as a a broad ridge of
high pressure builds. Increasing 850 mb temperatures and lingering
offshore winds aloft will also push warmer temperatures toward the
coast through the weekend. Thus, look for upper 60s to 70s at the
coast to 70s and 80s inland with a few spots reaching to near 90 deg
f in warmer interior locations. Also expecting less coverage of
cloud cover during the late night and early morning hours with the
ridge aloft and weak offshore flow at times. However, cannot rule out
few scattered low clouds near the coast and around san francisco
each night morning.

High pressure will then shift inland late in the weekend and into
next week. The forecast models are in decent agreement with an
approaching mid upper level trough that will result in a region-wide
cooling trend and potential for increased cloud cover. However, the
models continue to differ on possibility of precipitation across our
region from Tuesday into Friday of next week. The latest thinking is
that the first of two frontal systems will drop down across northern
california and then drop through the region Tuesday into Wednesday.

The best chances for rain however appear to remain north of the
region through Tuesday. The GFS shows better chances of rainfall
over the north bay Wednesday into Thursday and lingering into Friday
with a moist flow advecting into northern california. The 12z ecmwf
is trending drier however and keeps most precipitation well to our
north. Given the inconsistency with the model data, will keep a
slight chance of precipitation over the north bay from late Tuesday
into Friday with dry conditions south of the golden gate.

Regardless, do expect temperatures to cool to near or slightly below
seasonal averages next week. We remain 5 to 7 days out at this time
from any precipitation chances and will have time to continue to
monitor.

Aviation As of 4:38 pm pdt Thursday... Marine layer has
compressed down to around 1000 feet this afternoon. Northerly
gradient has increased which should delay the stratus from
spreading inland. Low clouds will fill the coastal areas first so
mry and sns should have CIGS after 03z. But stratus will be very
late in spreading into the sfo bay area.

Vicinity of ksfo...VFR is expected until 13z. Low clouds finally
get into sfo and the approach after 13z.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals... Ifr CIGS after 03z.

Marine As of 04:16 pm pdt Thursday... Light NW winds will
continue overnight into Friday as a long period NW swell moves
through the waters. Swell will slowly decrease over the weekend
with continued light NW winds. A quiet pattern continues into
early next week.

Mtr watches warnings advisories
Tngt None.

Public forecast: rgass
aviation: W pi
marine: rww
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 24 mi52 min NNW 2.9 G 5.1 61°F 68°F1018.7 hPa (-0.0)
46042 - MONTEREY - 27NM West of Monterey Bay, CA 27 mi62 min NW 18 G 21 58°F 62°F8 ft1017.4 hPa (-0.3)
46114 - West Monterey Bay, CA 32 mi52 min 62°F7 ft
46092 - MBM1 35 mi92 min W 14 59°F 62°F1017.9 hPa (-0.5)
AAMC1 - 9414750 - Alameda, CA 41 mi52 min WNW 6 G 8.9 60°F 65°F1018.4 hPa (+0.0)
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 43 mi52 min SW 5.1 G 5.1
PXOC1 - 9414311 - San Francisco (Pier 1), CA 43 mi52 min SSE 1.9 G 2.9 61°F 1016.9 hPa (-0.6)
OBXC1 43 mi52 min 61°F 56°F
PXSC1 43 mi52 min 61°F 55°F
FTPC1 - 9414290 - San Francisco, CA 43 mi52 min WSW 8.9 G 13 58°F 61°F1018.2 hPa (-0.8)
ELXC1 - Elkhorn Slough Reserve, CA 43 mi67 min WSW 1.9 58°F 1018 hPa55°F
LNDC1 43 mi52 min Calm G 1.9 63°F 1018.1 hPa (-0.3)
46237 - San Francisco Bar, CA (142) 44 mi52 min 59°F6 ft
OKXC1 - 9414776 - Oakland (Berth 34), CA 44 mi52 min SW 1.9 G 2.9 60°F 1018.1 hPa (-0.3)
46240 - Cabrillo Point, Monterey Bay, CA (158) 46 mi61 min 62°F3 ft
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 46 mi42 min NW 16 G 18 57°F 58°F1019.2 hPa
MEYC1 48 mi76 min 63°F1018.8 hPa
TIBC1 - Tiburon Pier, San Francisco Bay, CA 49 mi59 min Calm 62°F 1018 hPa (+0.0)

Wind History for Redwood City, CA
(wind in knots)    EDIT      (on/off)   Help
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
6
PM
7
PM
Last
24hr
NW6
NW6
NW4
S2
S2
NW3
W4
S1
W2
SE1
SW2
SW2
W1
S4
SE3
SE2
N4
N4
N7
G10
NW5
N9
NW11
NW8
NW3
1 day
ago
NW8
G12
NW3
S3
S3
S3
NW3
W2
S2
W2
SW2
--
NW2
W3
E1
E2
NW3
N3
G6
N3
N5
NW9
NW12
N8
N10
NW7
2 days
ago
N9
NW9
W2
SE2
SE3
--
SE2
SW2
SE3
SW1
W2
--
S1
SW1
E2
N2
N1
N4
N4
NW8
N9
G13
NW9
NW10
NW12

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure

Wind History from PAO (wind in knots)
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
6
PM
7
PM
Last 24hr--NW9------------------CalmCalm----NE5N5N8N10NW9N10NW9NW9NW7
1 day agoNW8Calm------------------CalmCalmCalm--6--N6N8NW10----NW15NW12
2 days agoNW10NW10----------------------Calm45N6N10N10N8N8N9N13NW13

Tide / Current Tables for Ano Nuevo Island, California
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Ano Nuevo Island
Click for Map
Thu -- 12:30 AM PDT     0.64 feet Low Tide
Thu -- 01:24 AM PDT     Moonset
Thu -- 07:20 AM PDT     Sunrise
Thu -- 07:38 AM PDT     4.10 feet High Tide
Thu -- 01:20 PM PDT     2.55 feet Low Tide
Thu -- 03:40 PM PDT     Moonrise
Thu -- 06:26 PM PDT     4.02 feet High Tide
Thu -- 06:28 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
0.70.711.62.333.744.13.93.53.12.72.62.62.93.33.7443.632.31.5

Tide / Current Tables for Half Moon Bay, California
   EDIT      (on/off)   Help   One Week of Data
Half Moon Bay
Click for Map
Thu -- 12:44 AM PDT     0.74 feet Low Tide
Thu -- 01:24 AM PDT     Moonset
Thu -- 07:21 AM PDT     Sunrise
Thu -- 07:56 AM PDT     4.50 feet High Tide
Thu -- 01:34 PM PDT     2.65 feet Low Tide
Thu -- 03:41 PM PDT     Moonrise
Thu -- 06:28 PM PDT     Sunset
Thu -- 06:44 PM PDT     4.42 feet High Tide
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
0.80.811.62.33.13.84.34.54.33.93.432.72.733.43.94.34.44.13.62.81.9

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 (22,6,7,8)
      (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.