Wednesday, June28, 2017 L-36.com


Marine Weather and Tides
Loyola, CA

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 5:49AMSunset 8:34PM Wednesday June 28, 2017 10:19 AM PDT (17:19 UTC) Moonrise 10:00AMMoonset 11:14PM Illumination 22% Phase: Waxing Crescent; Moon at 5 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 Pigeon Point To Point Pinos To 10 Nm- 840 Am Pdt Wed Jun 28 2017
.small craft advisory in effect from 3 pm pdt this afternoon through late tonight...
Today..NW winds 5 to 15 kt...increasing to 15 to 25 kt in the afternoon. Wind waves 3 to 5 ft. NW swell 2 to 3 ft at 9 seconds. Patchy fog late in the morning.
Tonight..NW winds 15 to 25 kt. Wind waves 3 to 5 ft. NW swell 3 to 5 ft at 9 seconds. Patchy fog after midnight.
Thu..NW winds 5 to 15 kt...increasing to 15 to 25 kt in the afternoon. Wind waves 3 to 5 ft. NW swell 5 to 6 ft at 10 seconds. Patchy fog in the morning.
Thu night..NW winds 15 to 25 kt. Wind waves 3 to 5 ft. NW swell 5 to 7 ft at 10 seconds. Patchy fog after midnight.
Fri..NW winds 15 to 25 kt. Wind waves 3 to 5 ft. NW swell 6 to 8 ft at 10 seconds. Patchy fog.
Sat..NW winds 15 to 25 kt. Wind waves 3 to 5 ft. NW swell 5 to 7 ft. Patchy fog.
Sun..NW winds 10 kt. Wind waves 2 ft or less. NW swell 5 to 7 ft. Patchy fog.
PZZ500 840 Am Pdt Wed Jun 28 2017
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Northerly winds will continue to increase along the central coast as high pressure builds off the coast. Gusty winds will result in hazardous sea conditions with steep wind waves and fresh swell.

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 281549
afdmtr
area forecast discussion
national weather service san francisco bay area
849 am pdt Wed jun 28 2017

Synopsis Marine air and stratus filtering inland on onshore winds
will persist causing near to slightly cooler than normal temperatures
today. Somewhat warmer temperatures will develop Thursday and Friday.

Except for patchy coastal drizzle, dry weather will persist over the
next 7 days. Night and morning coastal clouds will be followed by sunny
afternoons.

Discussion As of 8:49 am pdt Wednesday... Marine layer around
2000 feet deep this morning with stratus covering most of the
valleys. Onshore gradients around 2 mb but with ridge
strengthening slightly should allow for low clouds to clear back
to the coast by late morning. Looking over the current forecast
sky and temperature grids not seeing any reason for updates. Ridge
to strengthen slightly on Thursday should compress the marine
layer closer to 1500 feet with a little less inland penetration of
stratus for Thursday morning. Temperatures will run near or
slightly below normal today and then trend a few degrees warmer
inland for Thursday. Next shortwave upper trough approaches late
Friday evening and will likely induce a strong seabreeze and
deepening of the marine layer. In general the next 7 days through
the 4th of july holiday looks seasonable for late june early july
with night and morning low clouds followed by sunny and warm
afternoons.

Prev discussion As of 3:37 am pdt Wednesday... It's a fairly typical
summer stratus and fog pattern over the bay area and north central
coast this morning. The sfo-sac pressure gradient is 2.6 mb resulting
in onshore winds carrying ocean based stratus inland this morning in
a marine layer 1500-2000 feet deep. In addition to patchy fog, patchy
light drizzle has also been reported along the immediate coastline
since late last evening.

An upper level geopotential height ridge over the eastern pacific will
gradually advance toward the area late this week. Nearly stationary
lower to mid level thermal ridging over california will tend to
merge with the height ridge steadily strengthening the height ridge
as well as marine inversions through late week, and likely compress
inversions causing more favorable conditions for fog. Diurnal
warming contrasts between land and ocean will strengthen the
afternoon and evening sea-breezes causing stratus and fog to move
inland each night and morning; patchy dense fog may become more
favorable at times, mainly night-time and morning, from late week
into this weekend.

Aviation As of 04:35 am pdt Wednesday... For 12z tafs. It's
summer and the marine layer is strong. Low clouds filled back in
overnight at all terminals. Better defined layer than 24 hours ago
with higher cig heights. CIGS range from ifr to MVFR. Will follow
a more standard burnoff 17-18z.VFR this afternoon with lingering
cigs along the coast. CIGS return tonight.

Moderate confidence.

Vicinity of ksfo... MVFR CIGS through 17-18z. Sfo currently showing
only a bkn at 3k ft, but will put low cig in TAF as it should
lower by sunrise. Gusty winds up to 25 kt this afternoon.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals... Ifr CIGS through 17-18z, but fog seems
less likely. VFR this afternoon.

Marine As of 08:38 am pdt Wednesday... Moderate to locally
strong northerly winds will prevail along the central coast as
high pressure builds off the coast. Gusty winds will result in
hazardous conditions with steep wind waves and fresh swell.

Mtr watches warnings advisories
Tday Sca... Pt reyes to pigeon pt 0-10 nm from 3 pm
sca... Pigeon pt to pt pinos 0-10 nm from 3 pm
sca... Pt arena to pt reyes 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 from 3 pm
sca... Mry bay from 3 pm
sca... Sf bay from 11 am
public forecast: rww
aviation: bam
marine: bam
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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 mi50 min NNW 1.9 G 4.1 62°F 72°F1014 hPa
AAMC1 - 9414750 - Alameda, CA 34 mi50 min WSW 7 G 9.9 56°F 67°F1015.1 hPa
LNDC1 36 mi56 min SW 6 G 9.9 56°F 1014.6 hPa
OBXC1 37 mi50 min 57°F 55°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 37 mi50 min SSW 7 G 9.9 57°F 1014.5 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 37 mi50 min SW 9.9 G 12
PXOC1 - 9414311 - San Francisco (Pier 1), CA 38 mi50 min WSW 4.1 G 8.9 56°F 1013.5 hPa
46092 - MBM1 38 mi73 min W 9.7 55°F 56°F1014.2 hPa (+1.0)
46042 - MONTEREY - 27NM West of Monterey Bay, CA 38 mi90 min 57°F 59°F6 ft1014.8 hPa (+0.8)
PXSC1 38 mi50 min 57°F 55°F
ELXC1 - Elkhorn Slough Reserve, CA 39 mi95 min SSE 1.9 56°F 1014 hPa56°F
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA 40 mi90 min NW 14 G 18 55°F 56°F7 ft1014.7 hPa (+1.2)
FTPC1 - 9414290 - San Francisco, CA 40 mi50 min SW 6 G 8.9 55°F 58°F1014.7 hPa
46114 - West Monterey Bay, CA 41 mi50 min 56°F6 ft
46237 - San Francisco Bar, CA (142) 43 mi50 min 57°F5 ft
PPXC1 - 9414847 - Richmond (Point Potrero), CA 44 mi50 min SSW 9.9 G 15 57°F 1014.5 hPa
TIBC1 - Tiburon Pier, San Francisco Bay, CA 45 mi63 min SSE 7 55°F 1014 hPa
RCMC1 - 9414863 - Richmond, CA 46 mi50 min S 8.9 G 14 56°F 63°F1014.1 hPa
46240 - Cabrillo Point, Monterey Bay, CA (158) 48 mi59 min 60°F2 ft
MEYC1 49 mi104 min W 7 G 9.9 56°F 61°F1015.4 hPa
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 49 mi90 min WNW 14 G 19 54°F 56°F6 ft1014.5 hPa (+1.6)

Wind History for Redwood City, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Mountain View, Moffett Field, CA11 mi24 minNNE 710.00 miFair67°F55°F66%1014.7 hPa
San Jose, San Jose International Airport, CA12 mi27 minN 010.00 miA Few Clouds67°F54°F63%1014.1 hPa
Palo Alto Airport, CA13 mi93 minNE 58.00 miPartly Cloudy63°F55°F77%1014.6 hPa
San Jose / Reid / Hillv, CA17 mi90 minVar 410.00 miA Few Clouds63°F51°F68%1015.2 hPa
San Carlos Airport, CA18 mi33 minVar 310.00 miA Few Clouds61°F53°F77%1014.9 hPa
Half Moon Bay Airport, CA24 mi25 minWNW 63.00 miFog/Mist55°F53°F94%1015.6 hPa

Wind History from NUQ (wind in knots)
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Last 24hrN7N11NW11N15N17N17N13N15N11N9N5N8W3CalmNW4NW4NW4CalmCalmCalmNW4CalmCalmN7
1 day agoN6N10N11N13N16N17N18
G22
N15N15NW8NW9NW10NW6N6NW53W4NW3NW4NW5NW5W45N5
2 days agoN5N8N11N13
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N12N14N14N15N10N9W3CalmCalmCalmNW3NW5NW7NW4NW43SW3CalmN7

Tide / Current Tables for Palo Alto Yacht Harbor, California
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Palo Alto Yacht Harbor
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Wed -- 04:23 AM PDT     8.27 feet High Tide
Wed -- 05:50 AM PDT     Sunrise
Wed -- 11:00 AM PDT     Moonrise
Wed -- 11:41 AM PDT     -0.53 feet Low Tide
Wed -- 05:40 PM PDT     7.57 feet High Tide
Wed -- 08:33 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.73.75.57.28.28.175.43.720.6-0.3-0.50.42.24.46.37.47.576.25.243

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
Wed -- 01:38 AM PDT     1.09 knots Max Flood
Wed -- 04:30 AM PDT     -0.01 knots Slack
Wed -- 05:49 AM PDT     Sunrise
Wed -- 09:07 AM PDT     -1.38 knots Max Ebb
Wed -- 10:59 AM PDT     Moonrise
Wed -- 11:49 AM PDT     0.01 knots Slack
Wed -- 02:36 PM PDT     1.52 knots Max Flood
Wed -- 06:00 PM PDT     -0.00 knots Slack
Wed -- 08:33 PM PDT     Sunset
Wed -- 09:52 PM PDT     -0.83 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.511.10.80.3-0.2-0.6-1-1.3-1.4-1.2-0.60.211.41.51.30.70-0.4-0.6-0.8-0.8-0.6

Weather Map and Satellite Images
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Weather Map
wmap_P
IR Satellite Image from GEOS
west_satellite

GOES Local Image of CentralWestCoast    EDIT
Geos

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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weather_mapweather_map weather_map

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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.