Saturday, May25, 2019 L-36.com


Marine Weather and Tides
Loyola, 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 5:50AMSunset 8:19PM Saturday May 25, 2019 4:33 AM PDT (11:33 UTC) Moonrise 12:24AMMoonset 10:55AM Illumination 61% Phase: Waning Gibbous; Moon at 21 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- 244 Am Pdt Sat May 25 2019
.small craft advisory in effect from this evening through Sunday afternoon...
Today..NW winds 10 to 20 kt...becoming 10 to 15 kt this afternoon. Wind waves 3 to 4 ft. NW swell 6 to 8 ft at 9 seconds.
Tonight..NW winds 15 to 25 kt with gusts up to 30 kt. Wind waves 3 to 4 ft. NW swell 7 to 9 ft at 10 seconds. Showers likely.
Sun..W winds 15 to 25 kt with gusts up to 30 kt. Wind waves 6 to 7 ft. NW swell 8 to 9 ft at 10 seconds. Showers likely and a slight chance of Thunderstorms.
Sun night..NW winds 10 to 15 kt. Wind waves 3 to 4 ft. NW swell 6 to 8 ft at 10 seconds. A slight chance of showers.
Memorial day..NW winds 5 to 15 kt. Wind waves 2 ft or less. NW swell 5 to 6 ft at 9 seconds.
Mon night..NW winds 10 to 15 kt. Wind waves 2 ft or less. NW swell 4 to 5 ft at 9 seconds.
Tue..NW winds 10 to 20 kt. Wind waves around 3 ft. NW swell around 4 ft and sw around 3 ft.
Wed..NW winds 5 to 15 kt. Wind waves around 3 ft. NW swell 4 to 5 ft and sw around 3 ft. Winds and wind waves higher in and near Thunderstorms.
PZZ500 244 Am Pdt Sat May 25 2019
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Gusty northwest winds will continue today with gale-force winds over the northern outer waters. Another area of low pressure moving over inland california will result in gusty winds continuing through the weekend. Scattered showers and isolated Thunderstorms are possible on Sunday. Moderate northwest swell will continue through the weekend with steep fresh swell generated by the gusty winds.


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 251001
afdmtr
area forecast discussion
national weather service san francisco bay area
301 am pdt Sat may 25 2019

Synopsis Mainly dry conditions are forecast today, along with
continued cooler than normal temperatures. Unseasonably cool and
unsettled conditions are forecast to develop later in the weekend
as a system drops in from the north, with scattered showers and
isolated thunderstorms possible on Sunday. Dry weather should
return by memorial day, but temperatures will remain cool into
early next week. Temperatures are expected to warm closer to
normal by the middle of the week.

Discussion As of 3:01 am pdt Saturday... IR satellite imagery
is currently showing coastal low clouds that have spread well into
inland valleys. The marine layer is deeper and the cloud bases
are higher, thus, areas of drizzle will likely be limited to
higher elevations near the coast. High temperatures today are
expected to be fairly similar to those on yesterday, possibly
slightly warmer in some locations.

Meanwhile, a deep upper level low will quickly move south from the
bc coast reaching northern california by this evening, and to the
bay area coast by early Sunday morning. As this low approaches
the area, west to northwest winds will increase Saturday night,
with gusts up to 35 mph likely from mid evening Saturday through
early Sunday morning, mainly along the coast. Shower chances will
begin by late Saturday night as the low center nears, but the
greatest chance of showers will be on Sunday morning as the low
tracks across the bay area. Scattered showers will then taper off
from north to south by Sunday evening as the low moves to the east.

Thunderstorm chances will be greatest Sunday afternoon, and
across the southern portion of the forecast area, mainly because
of the cold airmass aloft and deep upper level low.

Temperatures on Sunday will be the coolest of the upcoming week,
with highs expected to mostly be in the range from the mid 50s to
mid 60s - values that will be as much as 20 degrees cooler than
average for late may. Dry weather is expected by memorial day
and temperatures will warm through the week.

Aviation As of 10:49 pm pdt Friday... MVFR-ifr ceilings due to
temporary lower level thermal ridging stability and surface
convergence prior to the arrival of a mainly dry cool front
Saturday morning; the latest NAM and hrrr models have shown a few
pockets of either light drizzle or light rain, none indicated in
the current tafs but these can be amended if needed. The GFS and
ecmwf theta-e forecasts show the cool front accelerating to 30 mph
late tonight and clearing well to our south later Saturday. Post
cool frontal winds in the spring season are often breezy to gusty
thus decided to bump up Saturday's winds over statistical guidance.

Statistical guidance then shows increasing winds arriving Saturday
night in the bay area.

Model differences in boundary layer rh lowers confidence as to how
quickly low clouds may clear Saturday, tafs lean toward sct-bkn MVFR
cloud coverage for much of the day. Pilots should plan on gusty winds,
lowering freezing levels over the CWA over the holiday weekend and
convection some of which could be borderline isolated severe with the
arrival of a deep cold core mid to upper low Sunday.

Vicinity of ksfo... Low clouds continue to converge along the coast
and move inland. MVFR-ifr ceiling tonight and Saturday morning. West
winds generally up over 12 knots tonight then increasingly gusty
around cool frontal passage Saturday morning, cool frontal passage
occurs by 15z. Gusty post frontal winds Saturday lasting into Saturday
night. MVFR ceiling with light rain arriving Saturday night.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals... MVFR locally ifr ceilings tonight, coastal
drizzle or light rain is possible later tonight into Saturday morning,
not in tafs presently, will amend as needed. Winds likely becoming
gusty Saturday, decided to bump up winds a bit more than presently
forecast by statistical guidance. MVFR ceilings Saturday night with
light rain developing.

Marine As of 2:44 am pdt Saturday... Gusty northwest winds will
continue today with gale-force winds over the northern outer
waters. Another area of low pressure moving over inland california
will result in gusty winds continuing through the weekend.

Scattered showers and isolated thunderstorms are possible on
Sunday. Moderate northwest swell will continue through the weekend
with steep fresh swell generated by the gusty winds.

Mtr watches warnings advisories
Tday Sca... Pt arena to pt reyes 0-10 nm until 3 am
sca... Pt arena to pigeon pt 10-60 nm until 3 am
glw... Pt arena to pigeon pt 10-60 nm
glw... Pt arena to pt reyes 0-10 nm until 9 am
sca... Pt reyes to pigeon pt 0-10 nm until 3 pm
sca... Pigeon pt to pt piedras blancas 10-60 nm
public forecast: sims
aviation: canepa
marine: st
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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
RTYC1 - 9414523 - Redwood City, CA 15 mi34 min S 1.9 G 2.9 55°F 66°F1011.8 hPa (-1.6)
AAMC1 - 9414750 - Alameda, CA 34 mi40 min WSW 12 G 16 55°F 64°F1011.3 hPa
LNDC1 36 mi34 min SW 8 G 9.9 54°F 1010.7 hPa (-2.0)
46042 - MONTEREY - 27NM West of Monterey Bay, CA 37 mi44 min NW 18 G 21 54°F 57°F5 ft1011.8 hPa (-1.4)
OBXC1 37 mi34 min 55°F 53°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 37 mi34 min WSW 6 G 9.9 54°F 1010.7 hPa (-2.0)
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 37 mi34 min WSW 8.9 G 18
PXOC1 - 9414311 - San Francisco (Pier 1), CA 38 mi34 min Calm G 0 53°F 1009.5 hPa (-2.1)
46092 - MBM1 38 mi81 min WNW 12 54°F 56°F1012.4 hPa (-1.1)
PXSC1 38 mi34 min 55°F 53°F
MLSC1 - Moss Landing, South Harbor, CA 38 mi54 min WSW 7 G 19 53°F 1012.8 hPa51°F
ELXC1 - Elkhorn Slough Reserve, CA 39 mi49 min W 6 54°F 1012 hPa53°F
FTPC1 - 9414290 - San Francisco, CA 40 mi40 min WSW 9.9 G 17 53°F 58°F1010.6 hPa
46114 - West Monterey Bay, CA 41 mi34 min 56°F6 ft
46237 - San Francisco Bar, CA (142) 43 mi34 min 58°F7 ft
PPXC1 - 9414847 - Richmond (Point Potrero), CA 44 mi34 min S 12 G 15 55°F 1010.2 hPa (-2.3)
TIBC1 - Tiburon Pier, San Francisco Bay, CA 45 mi119 min SW 7 52°F 1011 hPa
RCMC1 - 9414863 - Richmond, CA 46 mi40 min S 6 G 8 54°F 61°F1009.9 hPa
46240 - Cabrillo Point, Monterey Bay, CA (158) 48 mi34 min 59°F2 ft
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 49 mi24 min WNW 21 G 27 53°F 55°F1011.3 hPa
MEYC1 49 mi58 min 60°F1013 hPa

Wind History for Redwood City, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Mountain View, Moffett Field, CA11 mi38 minW 410.00 miFair56°F48°F77%1011.7 hPa
San Jose, San Jose International Airport, CA12 mi41 minN 010.00 miOvercast58°F54°F87%1011.3 hPa
Half Moon Bay Airport, CA24 mi39 minNW 85.00 miFog/Mist54°F50°F88%1012.2 hPa

Wind History from NUQ (wind in knots)
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Last 24hrSW3W3CalmCalmCalm4N7N9N11N9NW10N11N11
G18
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1 day agoCalmCalm3S55SE73E4CalmN12N10N10N15N13N7SE5E6E8SE8SE6S5SE3CalmCalm
2 days agoW8NW6W7W6NW7NW104NW10N116NW6
G17
N15N12NW96NE8N8N8NE4E4NE3SE4CalmSE3

Tide / Current Tables for Palo Alto Yacht Harbor, California
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Palo Alto Yacht Harbor
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Sat -- 01:22 AM PDT     3.11 feet Low Tide
Sat -- 01:24 AM PDT     Moonrise
Sat -- 05:52 AM PDT     Sunrise
Sat -- 05:54 AM PDT     7.15 feet High Tide
Sat -- 11:55 AM PDT     Moonset
Sat -- 01:31 PM PDT     0.32 feet Low Tide
Sat -- 07:18 PM PDT     6.67 feet High Tide
Sat -- 08:18 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.73.23.34.25.66.87.26.65.54.23.121.10.40.41.32.94.76.16.66.66.25.75.1

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
Sat -- 01:14 AM PDT     0.00 knots Slack
Sat -- 01:24 AM PDT     Moonrise
Sat -- 03:16 AM PDT     0.49 knots Max Flood
Sat -- 05:52 AM PDT     Sunrise
Sat -- 05:53 AM PDT     -0.00 knots Slack
Sat -- 10:41 AM PDT     -0.95 knots Max Ebb
Sat -- 11:55 AM PDT     Moonset
Sat -- 01:41 PM PDT     0.00 knots Slack
Sat -- 04:38 PM PDT     1.02 knots Max Flood
Sat -- 08:02 PM PDT     -0.01 knots Slack
Sat -- 08:18 PM PDT     Sunset
Sat -- 11:39 PM PDT     -0.47 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.3-0.10.30.50.40.3-0-0.3-0.5-0.8-0.9-0.9-0.7-0.30.20.7110.90.50-0.2-0.4-0.5

Weather Map and Satellite Images
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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.
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Wind Forecast for San Francisco/Monterey Bay Area, CA (7,2,3,4)
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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.