Thursday, October17, 2019 L-36.com


Marine Weather and Tides
Loyola, CA

Version 3.4
NOTICE
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 7:16AMSunset 6:30PM Thursday October 17, 2019 10:40 AM PDT (17:40 UTC) Moonrise 8:09PMMoonset 9:52AM Illumination 83% 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
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PZZ560 Coastal Waters From Pigeon Point To Point Pinos California Out To 10 Nm- 859 Am Pdt Thu Oct 17 2019
.small craft advisory in effect through late Friday night...
Today..NW winds 15 to 25 kt with gusts up to 30 kt. Wind waves 3 to 4 ft, increasing to 5 to 6 ft this afternoon. NW swell 7 to 9 ft at 15 seconds and sw around 2 ft at 15 seconds.
Tonight..NW winds 10 to 20 kt with gusts up to 30 kt. Wind waves 3 to 4 ft. NW swell 10 to 12 ft at 16 seconds and sw around 2 ft at 16 seconds.
Fri..NW winds 10 to 20 kt with gusts up to 25 kt. Wind waves 3 to 4 ft. W swell 10 to 12 ft at 15 seconds and sw around 2 ft at 16 seconds.
Fri night..NW winds 10 to 15 kt. Wind waves around 2 ft. NW swell 9 to 11 ft at 15 seconds.
Sat..NW winds 10 to 20 kt with gusts up to 25 kt. Wind waves 3 to 4 ft. NW swell 8 to 10 ft at 15 seconds.
Sat night..NW winds 10 to 20 kt with gusts up to 25 kt. Wind waves 3 to 4 ft. NW swell 5 to 7 ft at 15 seconds and sw around 2 ft at 21 seconds.
Sun..NW winds 10 to 20 kt with gusts up to 30 kt. Wind waves 3 to 4 ft. NW swell 8 to 10 ft and sw around 2 ft.
Mon..N winds 5 to 15 kt. Wind waves 1 to 2 ft. NW swell 6 to 8 ft and S around 2 ft.
PZZ500 859 Am Pdt Thu Oct 17 2019
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Moderate northwest winds will continue over the waters through Friday. A large, northwest swell will arrive this afternoon with the largest waves occurring Thursday night and Friday. The northwest swell will persist as the dominant wave through the weekend, waves will slowly reduce from their peak heights but will remain at hazard levels for small craft.


7 Day Forecast for Marine Location Near Loyola, CA
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location: 37.29, -122.14     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 171551
afdmtr
area forecast discussion
national weather service san francisco bay area
851 am pdt Thu oct 17 2019

Synopsis A weakening frontal boundary pushing through the
central coast this morning brought light rain or coastal drizzle
to areas. Expect cooler, breezy conditions to develop in wake of
the frontal passage this afternoon and continue through Saturday.

A warming and drying trend will begin over the weekend and
continue into next week.

Discussion As of 8:51 am pdt Thursday... Satellite imagery
shows the frontal boundary now has moved through much of the bay
area, and clouds are decreasing from north to south. Rainfall
amounts were light, generally a few hundredths at a handful of
places. Mt. Diablo checked in with 0.08" which was the most noted.

Look for northwest winds to increase by this afternoon and become
locally gusty at times along the coast and in the hills.

Temperatures will also be slightly cooler this afternoon,
especially in the hills and higher elevations where 50s and 60s
will be common. More widespread 60s are likely near the coast with
lower 70s possible in the interior valleys. Very little change is
anticipated on Friday, however it should be less windy.

Another quick-moving weather system will clip the north bay late
Friday night into Saturday morning. This system may produce a brief
period of light rain across mainly the north bay, leaving most of
the remainder of the region dry. As this system moves to the east,
a brief period of dry offshore winds will be possible over the
north bay by late Sunday night into early Monday. However, these
winds are not forecast to be strong. A subtle warming trend is
also expected through the upcoming weekend as high pressure builds
over the eastern pacific.

This high pressure ridge is then progged to rebuild into
california by the middle of next week. This will bring a warming
and drying trend, along with periods of offshore flow. Dry
conditions will also persist through the extended forecast period.

Thus, will need to continue to monitor the potential for fire
weather concerns.

Aviation As of 4:45 am pdt Thursday... Weak frontal passage
currently is bringing a spectrum of MVFR to ifr CIGS across the
bay area. Clearing will be strongly dependent on the movement of
the front, but it should transition toVFR conditions from north
to south through the morning hours. Breezy northwest winds will
develop by midday, lasting through the afternoon.

Vicinity of ksfo... Borderline MVFR ifr CIGS for the morning hours,
becomingVFR by the late morning. Winds will be onshore,
increasing through the day with gusts approaching 25 kt in the
afternoon.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals... Ifr MVFR CIGS and or vis due to frontal
cloud passage currently. Transition toVFR conditions around
midday. Increasing, breezy onshore winds through the afternoon.

Marine As of 2:33 am pdt Thursday... Moderate northwest winds
will continue over the waters through Friday. A large, northwest
swell will arrive this afternoon with the largest waves occurring
Thursday night and Friday. The northwest swell will persist as the
dominant wave through the weekend, waves will slowly reduce from
their peak heights but will remain at hazard levels for small craft.

Mtr watches warnings advisories
Tday High surf advisory... Caz006-505-509-529-530
sca... Pigeon pt to pt pinos 0-10 nm from 9 am
sca... Pt arena to pt reyes 0-10 nm
sca... Pt reyes to pigeon pt 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 from 11 am
sca... Mry bay from 11 am
sca... Sf bay from 2 pm
public forecast: sims
aviation: dk
marine: dk
visit us at

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
RTYC1 - 9414523 - Redwood City, CA 15 mi52 min W 11 G 15 1015.8 hPa
AAMC1 - 9414750 - Alameda, CA 34 mi58 min WNW 4.1 G 6 61°F 61°F1015.3 hPa
LNDC1 36 mi52 min NW 6 G 8.9 1014.8 hPa
46042 - MONTEREY - 27NM West of Monterey Bay, CA 37 mi50 min 19 G 23 58°F 58°F7 ft1014.8 hPa (+1.3)
OBXC1 37 mi58 min 60°F 49°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 37 mi52 min NNW 5.1 G 7 1014.9 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 37 mi58 min NW 4.1 G 6
PXOC1 - 9414311 - San Francisco (Pier 1), CA 38 mi52 min WSW 6 G 9.9 60°F 1013.9 hPa
46092 - MBM1 38 mi89 min NW 14 57°F 58°F1014.6 hPa (+1.6)
PXSC1 38 mi52 min 61°F 47°F
MLSC1 - Moss Landing, South Harbor, CA 38 mi37 min WSW 5.1 G 13 57°F 1015.8 hPa56°F
ELXC1 - Elkhorn Slough Reserve, CA 39 mi115 min SE 4.1 57°F 1012 hPa56°F
FTPC1 - 9414290 - San Francisco, CA 40 mi58 min SW 8 G 9.9 58°F 57°F1015.3 hPa
46114 - West Monterey Bay, CA 41 mi40 min 56°F7 ft
46237 - San Francisco Bar, CA (142) 43 mi40 min 55°F6 ft
PPXC1 - 9414847 - Richmond (Point Potrero), CA 44 mi52 min WNW 1 G 2.9 63°F 1015.2 hPa
TIBC1 - Tiburon Pier, San Francisco Bay, CA 45 mi65 min NNW 8 60°F 1015 hPa
RCMC1 - 9414863 - Richmond, CA 46 mi52 min 59°F
46240 - Cabrillo Point, Monterey Bay, CA (158) 48 mi40 min 58°F3 ft
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 49 mi30 min NW 18 G 19 56°F 56°F1016.4 hPa
MEYC1 49 mi64 min 58°F1015.6 hPa

Wind History for Redwood City, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
San Jose, San Jose International Airport, CA12 mi47 minNNW 1110.00 miA Few Clouds62°F50°F65%1015.1 hPa
Palo Alto Airport, CA13 mi53 minNW 1010.00 miA Few Clouds63°F46°F56%1015.2 hPa
San Jose / Reid / Hillv, CA17 mi53 minWNW 610.00 miPartly Cloudy61°F53°F77%1015.2 hPa
San Carlos Airport, CA18 mi49 minWNW 910.00 miA Few Clouds63°F46°F56%1015.6 hPa
Half Moon Bay Airport, CA24 mi45 minN 10 G 157.00 miA Few Clouds57°F53°F88%1015.9 hPa

Link to 5 minute data for KNUQ

Wind History from NUQ (wind in knots)
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Last 24hr------------------------------------------------
1 day ago------------------------------------------------
2 days ago------------------------------------------------

Tide / Current Tables for Palo Alto Yacht Harbor, California
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Palo Alto Yacht Harbor
Click for Map
Thu -- 04:01 AM PDT     7.03 feet High Tide
Thu -- 07:18 AM PDT     Sunrise
Thu -- 10:40 AM PDT     3.22 feet Low Tide
Thu -- 10:52 AM PDT     Moonset
Thu -- 03:54 PM PDT     8.23 feet High Tide
Thu -- 06:28 PM PDT     Sunset
Thu -- 09:08 PM PDT     Moonrise
Thu -- 11:07 PM PDT     0.63 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.73.35.16.576.75.84.94.23.73.33.23.74.96.57.88.27.66.14.42.91.710.6

Tide / Current Tables for Dumbarton Point 2.3 mi NE, South San Francisco Bay, California Current
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Dumbarton Point 2.3 mi NE
Click for Map
Thu -- 12:54 AM PDT     1.27 knots Max Flood
Thu -- 04:21 AM PDT     -0.01 knots Slack
Thu -- 07:18 AM PDT     Sunrise
Thu -- 08:11 AM PDT     -0.76 knots Max Ebb
Thu -- 10:00 AM PDT     0.00 knots Slack
Thu -- 10:52 AM PDT     Moonset
Thu -- 12:45 PM PDT     0.92 knots Max Flood
Thu -- 03:27 PM PDT     -0.00 knots Slack
Thu -- 06:28 PM PDT     Sunset
Thu -- 08:25 PM PDT     -1.27 knots Max Ebb
Thu -- 09:08 PM PDT     Moonrise
Thu -- 10:54 PM PDT     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.11.31.10.70.2-0.2-0.5-0.7-0.8-0.5-00.40.80.90.70.2-0.2-0.5-0.8-1.1-1.3-1.1-0.60.1

Weather Map
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wmap_P
GEOS 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.
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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for San Francisco/Monterey Bay Area, CA (13,3,4,5)
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Ground Weather Radar Station San Francisco Bay Area, CA
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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.