Tuesday, June25, 2019 L-36.com


Marine Weather and Tides
La Honda, CA

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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 5:47AMSunset 8:34PM Tuesday June 25, 2019 4:58 AM PDT (11:58 UTC) Moonrise 12:26AMMoonset 12:31PM Illumination 45% Phase: Third Quarter Moon; Moon at 23 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- 217 Am Pdt Tue Jun 25 2019
.small craft advisory in effect from 10 am pdt this morning through this evening...
Today..NW winds 10 to 15 kt, increasing to 15 to 25 kt with gusts up to 30 kt this afternoon. Wind waves 3 to 4 ft, increasing to 5 to 6 ft this afternoon. NW swell 4 to 5 ft at 8 seconds.
Tonight..NW winds 10 to 20 kt with gusts up to 25 kt. Wind waves 4 to 5 ft. Mixed swell nw 3 to 5 ft at 8 seconds and S around 3 ft at 16 seconds.
Wed..NW winds 15 to 25 kt with gusts up to 30 kt. Wind waves 4 to 5 ft. Mixed swell nw 3 to 4 ft at 9 seconds and S around 3 ft at 15 seconds.
Wed night..NW winds 15 to 20 kt with gusts up to 25 kt. Wind waves 3 to 4 ft. NW swell 2 to 3 ft at 11 seconds.
Thu..NW winds 15 to 25 kt with gusts up to 30 kt. Wind waves 4 to 5 ft. NW swell around 2 ft at 11 seconds.
Thu night..NW winds 15 to 25 kt with gusts up to 30 kt. Wind waves 3 to 4 ft. NW swell 3 to 5 ft at 10 seconds.
Fri..NW winds 10 to 20 kt with gusts up to 25 kt. Wind waves 2 ft or less. NW swell 3 to 5 ft.
Sat..NW winds 10 to 20 kt with gusts up to 25 kt. Wind waves 2 ft or less. NW swell 3 to 4 ft.
PZZ500 217 Am Pdt Tue Jun 25 2019
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Gusty northwesterly winds will persist across the northern outer waters and along the coast north of point reyes into tonight as high pressure remains over the eastern pacific. Additionally, expect locally gusty winds to develop this afternoon at coastal gaps, over the bays, and along the big sur coast south of point sur. These winds will generate steep fresh swell resulting in hazardous conditions over the waters, particularly for smaller vessels. Winds will diminish tonight as high pressure weakens and an upper low moves offshore of the pacific northwest. Expect northwesterly winds to re-strengthen later this week.


7 Day Forecast for Marine Location Near La Honda, CA
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location: 37.3, -122.29     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 251132
afdmtr
area forecast discussion
national weather service san francisco bay area
432 am pdt Tue jun 25 2019

Synopsis A cooling trend will continue through Thursday, with
temperatures forecast to cool several degrees below seasonal
averages over the next few days. In addition, expect an increase
in night and morning low clouds through Wednesday morning.

Temperatures will warm a bit late in the week and into next
weekend, but still remain below average.

Discussion As of 3:05 am pdt Tuesday... The cooling trend that
got off to a modest start on Monday will continue through
Thursday as an upper trough gradually deepens near the california
coast. Model consensus indicates cooling today will be limited to
just a few degrees, and mainly across inland areas. More robust
cooling, on the order of ten degrees for inland areas, is expected
on Wednesday as a vort MAX rotates through the base of the trough
and across northern california. A few additional degrees of
cooling is then anticipated on Thursday when the upper trough
reaches its maximum depth over california and 850 mb temperatures
drop a bit below 10 deg c. Inland temperatures by Thursday are
forecast to be as much as 15 degrees cooler than average.

Low clouds are not as widespread early this morning as they were
at this time yesterday morning, particularly across the san
francisco bay area. Expect low clouds to become more widespread
tonight and Wednesday night as the marine layer deepens. By
Thursday there may be enough cooling aloft to mix out the marine
layer.

Gradual warming is forecast from Friday into the upcoming weekend
as the upper trough slowly lifts to the northeast. However,
temperatures are expected to remain cooler than normal in most
areas through the weekend.

In the longer range, there had previously been good agreement
between the GFS and ECMWF (both deterministic and ensemble mean
versions) in forecasting warmer weather by the july 4th holiday as
an upper ridge over the desert southwest was forecast to build
westward across california. The latest GFS ensemble mean and
deterministic model continue to forecast warming, but the latest
ecmwf now maintains the trough position near the west coast and
thus suggests continued cooler than average conditions into the
holiday.

Aviation As of 04:32 am pdt Tuesday... For 12z tafs. The marine
layer remains at around 1500 ft agl per the fort ord profiler.

Stratus persists over the monterey bay and down the salinas
valley while most other areas remain clear. At this time not
expecting stratus to expand into the bay area. Satellite does show
a patch of stratus trying to slowly move northward up the santa
clara valley. This may result in temporary bkn CIGS at ksjc this
morning. Once stratus erodes, expectVFR conditions for all sites through
the evening. Generally light winds this morning will continue
before onshore winds increase this afternoon to around 10-15 kt.

Expect locally stronger winds this afternoon at ksfo.

Vicinity of ksfo...VFR conditions to prevail. Patches of low
clouds may develop over the bay this morning or temporarily expand
eastward towards the airport from the coast. Not expecting any
prevailing bkn CIGS this morning, but confidence is low. W to nw
winds through the period increasing to around 15 kt with gusts
20-25 kt this afternoon.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals... Ifr lifr CIGS to continue until around
16z-18z.VFR conditions the rest of the afternoon before stratus
is expected to redevelop early this evening. Generally light winds
this morning becoming onshore around 10-15 kt this afternoon.

Marine As of 2:17 am pdt Tuesday... Gusty northwesterly winds
will persist across the northern outer waters and along the coast
north of point reyes into tonight as high pressure remains over
the eastern pacific. Additionally, expect locally gusty winds to
develop this afternoon at coastal gaps, over the bays, and along
the big sur coast south of point sur. These winds will generate
steep fresh swell resulting in hazardous conditions over the
waters, particularly for smaller vessels. Winds will diminish
tonight as high pressure weakens and an upper low moves offshore
of the pacific northwest. Expect northwesterly winds to re-
strengthen later this week.

Mtr watches warnings advisories
Tday Sca... Mry bay from 10 am
sca... Pigeon pt to pt pinos 0-10 nm from 10 am
sca... Pt arena to pt reyes 0-10 nm
sca... Pt reyes to pigeon pt 0-10 nm
sca... Pt arena to pigeon pt 10-60 nm
sca... Pt pinos to pt piedras blancas 0-10 nm from 4 pm
sca... Pigeon pt to pt piedras blancas 10-60 nm until 4 pm
sca... Sf bay from 3 pm
public forecast: dykema
aviation: as
marine: as
visit us at

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
RTYC1 - 9414523 - Redwood City, CA 15 mi58 min NW 4.1 G 5.1 60°F 75°F1010.6 hPa (-0.3)
AAMC1 - 9414750 - Alameda, CA 33 mi58 min W 9.9 G 14
LNDC1 34 mi58 min WSW 7 G 8.9 58°F 1010.1 hPa (-0.4)
PXSC1 35 mi58 min 58°F 55°F
OBXC1 35 mi70 min 58°F 56°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 35 mi58 min Calm G 1.9 58°F 1010.1 hPa (-0.3)
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 35 mi58 min SW 2.9 G 4.1
PXOC1 - 9414311 - San Francisco (Pier 1), CA 35 mi58 min SE 4.1 G 5.1 57°F 1009 hPa
FTPC1 - 9414290 - San Francisco, CA 36 mi58 min S 2.9 G 6
46042 - MONTEREY - 27NM West of Monterey Bay, CA 36 mi68 min NNW 7.8 G 9.7 58°F 60°F7 ft1010.5 hPa (-0.5)
46237 - San Francisco Bar, CA (142) 38 mi58 min 59°F5 ft
46092 - MBM1 40 mi105 min WSW 1.9 56°F 60°F1010.8 hPa (-0.8)
46114 - West Monterey Bay, CA 40 mi58 min 61°F7 ft
TIBC1 - Tiburon Pier, San Francisco Bay, CA 42 mi71 min Calm 57°F 1010 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 42 mi58 min S 14 G 17 60°F 1010 hPa (-0.4)
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 43 mi48 min WNW 9.7 G 14 57°F 58°F1010.8 hPa
MLSC1 - Moss Landing, South Harbor, CA 43 mi68 min SSE 1.9 G 5.1 55°F 1011.5 hPa (-0.3)54°F
RCMC1 - 9414863 - Richmond, CA 44 mi58 min S 6 G 8.9 64°F
ELXC1 - Elkhorn Slough Reserve, CA 44 mi73 min SW 2.9 55°F 1011 hPa55°F

Wind History for Redwood City, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Mountain View, Moffett Field, CA16 mi2 hrsN 010.00 miFair64°F55°F73%1010.3 hPa
Half Moon Bay Airport, CA18 mi63 minN 07.00 miOvercast54°F50°F88%1011.2 hPa
San Jose, San Jose International Airport, CA20 mi65 minSSE 710.00 miFair59°F55°F87%1009.9 hPa
San Francisco, San Francisco International Airport, CA22 mi2 hrsWNW 610.00 miPartly Cloudy59°F51°F75%1009.8 hPa

Wind History from PAO (wind in knots)
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Last 24hr------------------CalmCalm--4N7--N9N9N11N12N14N14N13N13N9
1 day ago------------------Calm4--N5N4NW7N8N10NW15NW15N12NW12NW12N12NW6
2 days ago------------------------------------------------

Tide / Current Tables for Ano Nuevo Island, California
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Ano Nuevo Island
Click for Map
Tue -- 01:26 AM PDT     Moonrise
Tue -- 02:48 AM PDT     Last Quarter
Tue -- 04:23 AM PDT     3.14 feet High Tide
Tue -- 05:50 AM PDT     Sunrise
Tue -- 10:56 AM PDT     0.95 feet Low Tide
Tue -- 01:31 PM PDT     Moonset
Tue -- 05:46 PM PDT     4.43 feet High Tide
Tue -- 08:33 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.32.52.733.13.12.92.41.91.41.111.21.72.43.23.94.34.44.23.83.22.62.1

Tide / Current Tables for Dumbarton Bridge, San Francisco Bay, California Current
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Dumbarton Bridge
Click for Map
Tue -- 01:25 AM PDT     Moonrise
Tue -- 02:09 AM PDT     0.00 knots Slack
Tue -- 02:48 AM PDT     Last Quarter
Tue -- 05:02 AM PDT     0.86 knots Max Flood
Tue -- 05:48 AM PDT     Sunrise
Tue -- 08:40 AM PDT     -0.00 knots Slack
Tue -- 10:59 AM PDT     -0.70 knots Max Ebb
Tue -- 01:30 PM PDT     Moonset
Tue -- 01:59 PM PDT     0.00 knots Slack
Tue -- 05:32 PM PDT     1.27 knots Max Flood
Tue -- 08:33 PM PDT     Sunset
Tue -- 09:34 PM PDT     -0.00 knots Slack
Tue -- 11:52 PM PDT     -0.74 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.5-0.3-0.10.30.70.90.80.60.3-0.1-0.5-0.7-0.6-0.300.40.91.21.21.10.80.3-0.2-0.6

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.