Wednesday, June28, 2017 L-36.com


Marine Weather and Tides
Davenport, 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 5:50AMSunset 8:33PM Wednesday June 28, 2017 3:53 PM PDT (22:53 UTC) Moonrise 10:01AMMoonset 11:14PM Illumination 24% 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- 251 Pm Pdt Wed Jun 28 2017
.small craft advisory in effect through late Thursday night...
Tonight..NW winds 15 to 25 kt. Wind waves 3 to 5 ft. NW swell 5 to 6 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 4 to 5 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 20 to 30 kt. Wind waves 3 to 5 ft. NW swell 5 to 6 ft at 10 seconds. Patchy fog in the morning.
Fri night..NW winds 15 to 25 kt. Wind waves 3 to 5 ft. NW swell 7 to 8 ft at 10 seconds. Patchy fog after midnight.
Sat..NW winds 10 to 20 kt. Wind waves 2 to 4 ft. NW swell 6 to 8 ft. Patchy fog.
Sun..NW winds 5 to 15 kt. Wind waves 1 to 3 ft. NW swell 5 to 7 ft. Patchy fog.
Mon..SW winds 10 kt. Wind waves 2 ft or less. NW swell 4 to 6 ft.
PZZ500 251 Pm 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... Building high pressure off the california coast will maintain strong and gusty northerly winds through the remainder of the week and into the upcoming weekend. Steep wind waves and fresh swell will dominate the coastal waters as a result of the strong winds. Persons operating small crafts should use extra caution along the central california coast and bays through at least the forthcoming weekend.

7 Day Forecast for Marine Location Near Davenport, CA
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location: 37.01, -122.2     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 282102
afdmtr
area forecast discussion
national weather service san francisco bay area
202 pm pdt Wed jun 28 2017

Synopsis Seasonable summer pattern in place with a marine layer
along the coast leading to areas of night and morning low clouds
followed by sunny afternoons away from the coast right through the
4th of july holiday.

Discussion As of 2:02 pm pdt Wednesday... Marine layer has
compressed slightly to just under 2000 feet along the coast.

Marine clouds have been stubborn to clear from pt reyes to san
mateo as well as around the south end of monterey bay with
persistent northwest winds. Current temperatures are running
seasonably cool with only mid 70s for the inland valleys.

In general high pressure will strengthen slightly tonight into
Thursday which should compress the marine layer and weaken onshore
flow. So if anything the inland valleys should notice a slight
warming trend through the end of the work week. As the marine
layer compresses nighttime fog may be dense at times near the
coast and coastal hills with early morning drizzle associated with
the night time marine intrusions.

The next upper trough arrives around 00z Saturday, which will
likely lead to a stronger seabreeze Friday evening with a
deepening of the marine layer. Latest 18z NAM actually spits out a
few hundredths of precip by 12z Saturday morning as a result of
local drizzle associated with a deep marine layer.

850 mb temps look to stay in the 21-24 celsius range though the
weekend and into early next week. So in what will likely be a long
holiday weekend for many people it looks like dry and seasonable
pattern with perhaps slight cooling trend towards july 4th. Quiet
summer pattern overall.

Aviation As of 10:47 am pdt Wednesday... For 18z tafs. 2000 ft
marine layer is holding strong this morning across much of the
immediate coastline along central california. Sfo and oak barely
scattered out yesterday, due to local effects of the marine layer,
before stratus built back in early yesterday evening. Today has
the potential to be similar. However, tafs do reflect clearing
(vfr) by 1830-19z at all terminals. Will monitor accordingly.

Breezy onshore winds again this afternoon, ranging from 10 to 20
kt, with occasional gusts over 20 kt at sfo. CIGS return early
again tonight.

Moderate confidence.

Vicinity of ksfo... Borderline ifr MVFR CIGS through 18-19z, but
could potentially be later.VFR anticipated by early afternoon.

Winds 15-20 kt, with gusts around 25 kt through early evening.

MVFR to ifr CIGS set to return around 04-05z, but will ultimately
depend on when if clearing occurs this afternoon.

Sfo bridge approach... Approach will clear before terminal,
sometime around 18-1830z.

Monterey bay terminals... Satellite shows nice clearing through the
salinas valley. Sns should be clear by 18z, followed by mry by
1830-19z. Moderate and occasionally gusty westerly winds this
afternoon, 10-15 kt on average. CIGS return by early evening or
late afternoon.

Marine As of 01:42 pm pdt Wednesday... 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.

Mtr watches warnings advisories
Tngt Sca... Pigeon pt to pt pinos 0-10 nm
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
sca... Pt reyes to pigeon pt 0-10 nm until 3 am
sca... Mry bay until 9 pm
sca... Sf bay until 9 pm
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
46042 - MONTEREY - 27NM West of Monterey Bay, CA 20 mi63 min 58°F 59°F8 ft1014.5 hPa (-0.7)
46092 - MBM1 20 mi106 min W 16 56°F 56°F1013.7 hPa (-0.4)
46114 - West Monterey Bay, CA 21 mi53 min 57°F6 ft
ELXC1 - Elkhorn Slough Reserve, CA 28 mi68 min WNW 8 62°F 1014 hPa56°F
46240 - Cabrillo Point, Monterey Bay, CA (158) 31 mi62 min 60°F3 ft
MEYC1 32 mi77 min WSW 7 G 12 57°F 60°F1015.2 hPa
RTYC1 - 9414523 - Redwood City, CA 34 mi53 min WNW 9.9 G 13 68°F 72°F1012.8 hPa (-1.1)
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA 44 mi63 min NW 16 G 19 56°F 56°F7 ft1014.8 hPa (-0.4)
46239 - Point Sur, CA (157) 47 mi61 min 56°F7 ft

Wind History for Monterey, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Watsonville, Watsonville Municipal Airport, CA22 mi60 minSSW 810.00 miFair68°F57°F68%1014 hPa

Wind History from WVI (wind in knots)
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Last 24hrSE7SE8E9SE11E8E9E7NE6NE3CalmCalmCalmCalmCalmCalmCalmCalmS33S35SW8S7S8
1 day agoS7SE7E7SE8E8E6E5NE6E6E5NE4CalmCalmNW4CalmCalmW3CalmS6S6S8SW11S8S6
2 days agoS6S8SE5E5E5E6E6CalmN3NW3NW3NW3NW3NW3NW3NW3CalmCalm4SW7SW8S8S7S8

Tide / Current Tables for Santa Cruz, Monterey Bay, California
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Santa Cruz
Click for Map
Wed -- 01:48 AM PDT     5.29 feet High Tide
Wed -- 05:51 AM PDT     Sunrise
Wed -- 08:55 AM PDT     -0.62 feet Low Tide
Wed -- 11:00 AM PDT     Moonrise
Wed -- 03:49 PM PDT     4.64 feet High Tide
Wed -- 08:31 PM PDT     Sunset
Wed -- 09:18 PM PDT     2.23 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.65.15.34.94.12.91.60.4-0.4-0.6-0.30.51.72.93.94.54.64.43.83.12.52.22.32.7

Tide / Current Tables for Ano Nuevo Island, California
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Ano Nuevo Island
Click for Map
Wed -- 01:35 AM PDT     4.98 feet High Tide
Wed -- 05:51 AM PDT     Sunrise
Wed -- 08:31 AM PDT     -0.75 feet Low Tide
Wed -- 11:01 AM PDT     Moonrise
Wed -- 03:29 PM PDT     4.75 feet High Tide
Wed -- 08:33 PM PDT     Sunset
Wed -- 09:13 PM PDT     2.14 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.44.94.94.53.52.20.9-0.1-0.7-0.7-0.10.81.93.14.14.74.74.33.62.92.42.12.32.7

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 (18,4,5,8)
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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.