Wednesday, April26, 2017 L-36.com


Marine Weather and Tides
Potrero, CA

Version 3.4
What's New / NOTES
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.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 6:02AMSunset 7:24PM Wednesday April 26, 2017 5:02 AM PDT (12:02 UTC) Moonrise 6:30AMMoonset 7:53PM Illumination 0% Phase: New Moon; Moon at 0 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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PZZ750 Coastal Waters From San Mateo Point To The Mexican Border And Out To 30 Nm- 303 Am Pdt Wed Apr 26 2017
.small craft advisory in effect from Thursday afternoon through late Friday night...
Today..Wind se to 10 kt...becoming W in the afternoon. Wind waves 2 ft or less. Mixed swell W 5 to 8 ft at 9 seconds and S 3 ft at 16 seconds.
Tonight..Wind sw 10 to 15 kt. Wind waves 2 ft or less. Mixed swell W 3 to 6 ft at 9 seconds and S 3 ft at 15 seconds.
Thu..Wind W 10 to 15 kt with gusts to 20 kt. Wind waves 4 ft. SWell W 5 to 7 ft at 9 seconds.
Thu night..Wind W 10 to 15 kt with gusts to 20 kt. Wind waves 3 to 4 ft in the evening...becoming 2 ft or less. SWell W 5 to 8 ft at 10 seconds.
Fri..Wind E 10 kt...becoming W with gusts to 20 kt in the afternoon. Wind waves 2 ft or less...becoming 3 to 4 ft in the afternoon. SWell W 5 to 8 ft at 10 seconds.
Fri night..Wind nw 10 to 20 kt with gusts to 25 kt. Wind waves 4 ft. SWell W 5 to 8 ft.
Sat..Wind ne 10 kt in the morning...becoming variable less than 10 kt. Wind waves 2 ft or less. SWell W 4 to 7 ft.
Sat night..Wind nw 10 kt. Gusts to 15 kt in the evening. Wind waves 3 ft in the evening...becoming 2 ft or less. SWell W 3 to 5 ft.
Sun..Wind variable less than 10 kt...becoming W 10 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 3 ft and S 3 ft.
Sun night..Wind W 10 kt with gusts to 15 kt in the evening... Becoming variable less than 10 kt. Wind waves 3 ft in the evening...becoming 2 ft or less. Mixed swell W 3 ft and S 3 ft.
PZZ700 303 Am Pdt Wed Apr 26 2017
Synopsis for far southern california coast.. At 2 am...a 1029 mb high was about 1000 nm west of san diego and a 1009 mb low was near needles. Winds and seas will increase again late this afternoon through Thursday afternoon with renewed small craft advisory conditions. Weak to moderate northwest winds will then prevail for this coming weekend.

7 Day Forecast for Marine Location Near Potrero, CA
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location: 31.69, -116.65     debug


Area Discussion for - San Diego, CA
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Fxus66 ksgx 261000 aaa
afdsgx
area forecast discussion
national weather service san diego ca
300 am pdt Wed apr 26 2017
updated to add small craft advisory

Synopsis
Strong northwest flow aloft will bring strong winds to the
mountains and deserts this afternoon through tonight. Fair and
warm weather is forecast through the weekend with some offshore
flow and local northerly winds. High pressure will continue to
bring fair and warm weather next week.

Discussion For extreme southwestern california including orange...

san diego... Western riverside and southwestern san bernardino
counties...

variable high clouds continue to stream across the sky from
northwest to southeast in our persistent northwest flow pattern.

Our search for coastal low clouds so far has come up empty. A
coastal eddy will spin up this morning to provide southerly
breezes along the coast, but the sea breeze this afternoon will
turn westerly. And that will be true again Thursday, bringing
areas of low clouds mainly to san diego county. Brisk northwest
flow aloft will increase winds in the mountains and deserts this
afternoon through tonight. Top isolated gusts will exceed 60 mph,
but widespread gusts over 40 mph are expected. That could stir up
some dust in areas of the desert. The variable high clouds will
continue to stream across the sky through Friday. The surface
pressure gradient GOES weakly offshore Friday morning even while
the eddy spins up. And then it happens again Saturday. But coastal
clouds will be few and far between. Some northerly offshore winds
will be felt mainly from cajon pass into orange county mainly
Friday. A low pressure trough will amplify over the four corners
area and the northerly flow over our region will keep the offshore
flow going Saturday. Overall, we anticipate very few if any
clouds either high or low through the weekend. The offshore flow
Friday through Sunday will make it cooler in the mountains and
deserts, but warmer in the coastal basin. As onshore flow returns
next week, the coastal basin will cool while the mountains and
deserts warm. High pressure aloft amplifies along the west coast
for a lot of warm sunshine as we turn the calendar to may.

Aviation
260900z... Coast/valleys... Few-sct clouds 1500-3500 ft msl and sct-
bkn clouds layers AOA 15000 ft msl through this morning. Bkn-ovc
clouds developing this evening after 06z with CIGS 800-1500 ft msl
through Thursday morning with patchy fog near the coast and where
low clouds intersect terrain.

Mountains/deserts... Sct-bkn cloud layers AOA 15000 ft msl and
unrestricted vis through Thursday morning. Strong sw-w winds
developing after 00z Thursday with gusts 40-50 kts likely at times
through Thursday morning. Areas of blowing dust and sand likely in
the deserts.

Marine
Northwest winds and seas will increase Thursday through Friday, with
a return of small craft advisory conditions. Winds and seas will
lower again over the coming weekend. A small craft advisory has been
issued beginning late this afternoon over the outer waters, expanding to
the near shore waters by late Thursday afternoon.

Skywarn
Skywarn activation is not requested. However weather spotters are
encouraged to report significant weather conditions.

Sgx watches/warnings/advisories
Ca... Wind advisory from 1 pm this afternoon to 3 am pdt Thursday for
apple and lucerne valleys-coachella valley-riverside county
mountains-san bernardino county mountains-san diego county
deserts-san diego county mountains-san gorgonio pass near
banning.

Pz... Small craft advisory from 3 pm this afternoon to 5 am pdt
Saturday for waters from san mateo point to the mexican
border extending 30 to 60 nm out including san clemente
island.

Small craft advisory from 3 pm Thursday to 5 am pdt Saturday for
coastal waters from san mateo point to the mexican border
and out to 30 nm.

Public... Mm
aviation/marine... Brotherton


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
TIXC1 - Tijuana River Reserve, CA 66 mi77 min ENE 1 55°F 1013 hPa53°F
SDBC1 - 9410170 - San Diego, CA 76 mi50 min 67°F1012.4 hPa
IIWC1 - 9410172 - USS Midway South Navy Pier, San Diego, CA 76 mi86 min Calm G 0 59°F

Wind History for USS MIDWAY South Navy Pier, San Diego, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
San Diego, Brown Field Municipal Airport, CA64 mi69 minVar 310.00 miFair55°F52°F90%1011.7 hPa

Wind History from SDM (wind in knots)
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Last 24hrS7SE6S10S6W5W8W10
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W10W7SW9W12W11W7W6W4W4CalmCalmCalmCalmCalmCalm3Calm
1 day agoS10S6S9S7SE7SW6W11
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2 days agoSE7NW3CalmCalmW9W9W8
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W7--W10W11W7W8W64SW5CalmCalmS4CalmS5S6SW6S7

Tide / Current Tables for Ensenada, Baja California Norte, Mexico
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Ensenada
Click for Map
Wed -- 03:37 AM PDT     -0.23 meters Low Tide
Wed -- 05:18 AM PDT     New Moon
Wed -- 06:05 AM PDT     Sunrise
Wed -- 06:30 AM PDT     Moonrise
Wed -- 09:45 AM PDT     1.39 meters High Tide
Wed -- 03:22 PM PDT     0.14 meters Low Tide
Wed -- 07:23 PM PDT     Sunset
Wed -- 07:52 PM PDT     Moonset
Wed -- 09:38 PM PDT     1.89 meters High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.90.50-0.2-0.2-00.30.71.11.31.41.210.60.30.10.20.40.81.21.61.81.91.7

Tide / Current Tables for Imperial Beach, California
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Imperial Beach
Click for Map
Wed -- 04:00 AM PDT     -1.05 feet Low Tide
Wed -- 05:18 AM PDT     New Moon
Wed -- 06:06 AM PDT     Sunrise
Wed -- 06:31 AM PDT     Moonrise
Wed -- 10:15 AM PDT     4.80 feet High Tide
Wed -- 03:52 PM PDT     0.35 feet Low Tide
Wed -- 07:26 PM PDT     Sunset
Wed -- 07:55 PM PDT     Moonset
Wed -- 10:07 PM PDT     6.22 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.82.10.5-0.6-1.1-0.70.31.73.24.34.84.63.82.71.50.60.40.81.83.24.65.76.25.9

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

GOES Local Image of Southwest    EDIT
Geos

Wind Forecast for San Diego, CA (8,2,3,4)
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Ground Weather Radar Station San Diego, 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.