Friday, May24, 2019 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 5:51AMSunset 8:18PM Friday May 24, 2019 2:29 AM PDT (09:29 UTC) Moonrise 12:00AMMoonset 10:00AM Illumination 72% Phase: Waning Gibbous; Moon at 20 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- 839 Pm Pdt Thu May 23 2019
.small craft advisory in effect until 3 am pdt Friday...
Tonight..SW winds 5 to 15 kt...becoming S 5 to 10 kt after midnight. Wind waves 2 ft or less. NW swell 9 to 10 ft at 11 seconds...subsiding to 7 to 9 ft at 11 seconds after midnight.
Fri..SW winds 5 to 15 kt. Wind waves 2 ft or less. NW swell 6 to 8 ft at 10 seconds.
Fri night..NW winds 5 to 15 kt. Wind waves 2 ft or less. NW swell 4 to 6 ft at 10 seconds.
Sat..NW winds 10 to 20 kt with gusts up to 25 kt. Wind waves 3 to 4 ft. NW swell 6 to 8 ft at 10 seconds.
Sat night..NW winds 20 to 30 kt. Wind waves 6 to 7 ft. NW swell 6 to 8 ft at 10 seconds.
Sun..NW winds 15 to 25 kt with gusts up to 30 kt. Wind waves 4 to 5 ft. NW swell 4 to 6 ft at 10 seconds. A chance of showers.
Sun night..NW winds 10 to 15 kt. Wind waves 2 ft or less. NW swell 4 to 5 ft at 10 seconds.
Memorial day..NW winds 5 to 15 kt. Wind waves 2 ft or less. NW swell 3 to 4 ft.
Tue..NW winds 5 to 15 kt. Wind waves 2 ft or less. W swell 3 to 4 ft and sw around 3 ft.
PZZ500 839 Pm Pdt Thu May 23 2019
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Gusty winds gradually decrease late tonight and early Friday as low pressure over the nevada moves east. Gusty northwest winds will redevelop over the coastal waters Friday night through the weekend as another low moves inland over the pacific northwest into the great basin. A large northwest swell will subside but remain moderate through the end of the week and into the weekend.


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


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 240543
afdmtr
area forecast discussion
national weather service san francisco bay area
1043 pm pdt Thu may 23 2019

Synopsis Mainly dry conditions are forecast through Saturday,
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.

Discussion As of 9:05 pm pdt Thursday... An upper low is
centered over the great basin this evening while a vort lobe
rotates around the west side of the low and across eastern
california. This vorticity lobe has been triggering isolated
shower activity over mainly the eastern edge of our forecast area
since mid afternoon. Showers recently developed over far eastern
contra costa county and are moving south into eastern alameda
county. There have been reports of lightning and thunder, but
based on lightning detection networks, it appears that
thunderstorms are farther to the east over san joaquin county.

Based on latest hrrr and the 00z nam, all shower activity should
end by late evening.

The upper low is forecast to move quickly off the the northeast
tonight and Friday. Thus, Friday is expected to be a dry day
under partly cloudy skies. Temperatures will remain cooler than
average.

A couple of weather systems lurking well to our north are forecast
to drop south late in the week and through the weekend. The first,
currently over british columbia, is expected to move into
northeastern california by Friday night. Models keep precipitation
with this system to our north and east. A second, stronger,
system, currently located near the south coast of alaska, is
forecast to follow closely behind the first. The models agree
that a cold upper low will dig south along or near the california
coast late Saturday night and Sunday, and perhaps directly over
the sf bay area on Sunday. This unseasonably cool and robust
system will likely generate scattered showers across our area on
Sunday and Sunday evening (showers could start as early as
Saturday night). In addition, there may be sufficient instability
for isolated thunderstorms on Sunday. Models indicate the best
potential for thunderstorms on Sunday will be across the southern
half of our forecast area, primarily from the south bay southward.

Rainfall totals with this weekend's system will depend on the
exact track of the system. The 00z NAM shows the upper low center
tracking just offshore, and thus gives the system move over-water
trajectory compared to the 12z ecmwf. Thus, the NAM generates more
than twice the precipitation compared to the ecmwf. The 18z gfs
qpf is similar to the wetter nam. If the ECMWF were to verify,
precipitation totals would mostly be below a quarter inch, but the
00z NAM shows precipitation totals close to an inch in some
sections of monterey and san benito counties. All models agree
that the heavier rainfall totals with the Sunday system will be
over our the southern portion of our area - mainly monterey and
san benito counties.

The Sunday system is forecast to be unseasonably cold, with the
nam forecasting snow levels to drop as low as 4000 feet. The
national blend of models (nbm) is more conservative with snow
levels, maintaining levels above 5000 feet on Sunday. Once again,
much will depend on the exact track of the upper low. If the low's
cold core tracks over or very close to our area, we could see snow
accumulation on the higher peaks in the santa lucia mountains of
monterey county on Sunday. And it's not out of the question that
snow could fall as low as the highest peaks in the bay area (e.G.,
mount hamilton). Temperatures on Sunday are forecast to be as
much as 20 degrees below normal.

The upper low is forecast to move well off to the southeast of
our area by Monday. Thus, dry weather is expected to return by
memorial day. Temperatures will warm slightly on Monday, but still
remain well below normal.

Although temperatures are forecast to climb close to normal by the
middle of next week, there doesn't appear much evidence from the
longer range models of any significant warming trend. In fact,
some longer range model solutions show an upper low retrograding
from the great basin over california and bringing more shower
chances later next week.

Aviation As of 10:42 pm pdt Thursday... Southerly flow has
developed along the coast and is impacting sfo and sjc. This
favors stratus into oak and the north bay with stratus spreading
into sfo late.

Vicinity of ksfo... Becoming MVFR after 12z. South to southewest
winds 5-10 kt. Clearing expected after 18z.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals... MVFR CIGS through 18z at sns and 19z at
mry.

Marine As of 10:36 pm pdt Thursday... Gusty winds gradually
decrease late tonight and early Friday as low pressure over the
nevada moves east. Gusty northwest winds will redevelop over the
coastal waters Friday night through the weekend as another low
moves inland over the pacific northwest into the great basin. A
large northwest swell will subside but remain moderate through
the end of the week and into the weekend.

Mtr watches warnings advisories
Tngt Sca... Pt arena to pt reyes 0-10 nm until 3 am
sca... Pt reyes to pigeon pt 0-10 nm until 3 am
sca... Pigeon pt to pt pinos 0-10 nm until 3 am
sca... Pt pinos to pt piedras blancas 0-10 nm until 3 am
sca... Pt arena to pigeon pt 10-60 nm until 3 am
sca... Pigeon pt to pt piedras blancas 10-60 nm
sca... Rough bar advisory for sf bar until 3 am
public forecast: dykema
aviation: W pi
marine: W pi
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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
RTYC1 - 9414523 - Redwood City, CA 24 mi60 min S 4.1 G 5.1 57°F 65°F1016.6 hPa
46042 - MONTEREY - 27NM West of Monterey Bay, CA 27 mi100 min S 5.8 G 7.8 56°F 57°F8 ft1016.2 hPa (+1.3)
46114 - West Monterey Bay, CA 32 mi60 min 57°F9 ft
46092 - MBM1 35 mi77 min SSW 7.8 55°F 54°F1016.5 hPa (+0.7)
AAMC1 - 9414750 - Alameda, CA 41 mi66 min W 8.9 G 9.9 58°F 64°F1016.4 hPa
MLSC1 - Moss Landing, South Harbor, CA 41 mi82 min NW 6 G 20 56°F 1017 hPa54°F
LNDC1 43 mi60 min W 6 G 9.9 58°F 1015.9 hPa
PXOC1 - 9414311 - San Francisco (Pier 1), CA 43 mi66 min WSW 5.1 G 11 57°F 1015 hPa
ELXC1 - Elkhorn Slough Reserve, CA 43 mi105 min N 5.1 56°F 1017 hPa54°F
FTPC1 - 9414290 - San Francisco, CA 43 mi60 min SW 8 G 12 58°F1016.4 hPa
PXSC1 43 mi66 min 58°F 52°F
OBXC1 43 mi60 min 57°F 53°F
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 43 mi60 min WSW 17 G 18
46237 - San Francisco Bar, CA (142) 44 mi60 min 57°F6 ft
OKXC1 - 9414776 - Oakland (Berth 34), CA 44 mi60 min WSW 11 G 15 58°F 1015.8 hPa
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 46 mi50 min SW 5.8 G 7.8 55°F 55°F1016.8 hPa
46240 - Cabrillo Point, Monterey Bay, CA (158) 46 mi60 min 59°F5 ft
MEYC1 48 mi60 min 60°F1016.9 hPa
TIBC1 - Tiburon Pier, San Francisco Bay, CA 49 mi85 min S 8 56°F 1016 hPa

Wind History for Redwood City, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Half Moon Bay Airport, CA24 mi35 minSSE 810.00 miOvercast55°F50°F82%1016.9 hPa

Wind History from HAF (wind in knots)
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Tide / Current Tables for Ano Nuevo Island, California
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Ano Nuevo Island
Click for Map
Fri -- 12:47 AM PDT     Moonrise
Fri -- 01:58 AM PDT     4.17 feet High Tide
Fri -- 05:54 AM PDT     Sunrise
Fri -- 09:18 AM PDT     -0.30 feet Low Tide
Fri -- 11:00 AM PDT     Moonset
Fri -- 04:48 PM PDT     3.78 feet High Tide
Fri -- 08:18 PM PDT     Sunset
Fri -- 10:10 PM PDT     2.95 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.744.243.42.61.60.70-0.3-0.20.311.82.63.33.73.83.73.53.2333

Tide / Current Tables for Half Moon Bay, California
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Half Moon Bay
Click for Map
Fri -- 12:48 AM PDT     Moonrise
Fri -- 02:16 AM PDT     4.57 feet High Tide
Fri -- 05:54 AM PDT     Sunrise
Fri -- 09:32 AM PDT     -0.20 feet Low Tide
Fri -- 11:00 AM PDT     Moonset
Fri -- 05:06 PM PDT     4.18 feet High Tide
Fri -- 08:19 PM PDT     Sunset
Fri -- 10:24 PM PDT     3.05 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.94.34.64.543.22.11.10.3-0.1-0.20.20.91.82.73.444.24.13.83.53.23.13.1

Weather Map and Satellite Images
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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 (5,6,7,8)
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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.