Monday, April23, 2018 L-36.com


Marine Weather and Tides
Potrero, CA

Version 3.4
What's New / NOTES
3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.
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.

Sunrise 6:06AMSunset 7:22PM Monday April 23, 2018 8:02 PM PDT (03:02 UTC) Moonrise 1:11PMMoonset 2:13AM Illumination 63% Phase: Waxing Gibbous; Moon at 9 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- 136 Pm Pdt Mon Apr 23 2018
Tonight..Wind W to 10 kt in the evening...becoming variable less than 10 kt. Wind waves 2 ft or less. SWell W 2 to 3 ft at 13 seconds. Areas of fog with vsby 1 nm or less after midnight.
Tue..Wind variable less than 10 kt...becoming W 10 kt in the afternoon. Wind waves 2 ft or less. SWell W 2 ft at 12 seconds. Areas of fog with vsby 1 nm or less in the morning.
Tue night..Wind variable less than 10 kt. Wind waves 2 ft or less. SWell W 2 to 3 ft at 12 seconds.
Wed..Wind variable less than 10 kt...becoming W 10 kt in the afternoon. Wind waves 2 ft or less. SWell W 1 to 3 ft at 15 seconds.
Wed night..Wind nw 10 kt in the evening... Becoming variable less than 10 kt. Wind waves 2 ft or less. Mixed swell W 1 to 3 ft at 14 seconds and S 3 ft at 16 seconds.
Thu..Wind variable less than 10 kt...becoming W 10 kt with gusts to 15 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 1 to 2 ft and S 3 ft.
Thu night..Wind nw 10 kt with gusts to 15 kt. Wind waves 2 ft or less. Mixed swell W 1 to 2 ft and S 3 ft.
Fri..Wind W 10 to 15 kt. Wind waves 2 ft or less. Mixed swell W 1 to 4 ft and S 3 ft.
Fri night..Wind W 10 to 15 kt with gusts to 20 kt. Wind waves 3 ft in the evening...becoming 2 ft or less. Mixed swell W 3 to 4 ft and S 3 ft.
Sat..Wind variable less than 10 kt...becoming W 10 to 15 kt with gusts to 20 kt in the afternoon. Wind waves 2 ft or less... Becoming 3 ft in the afternoon. Mixed swell W 3 to 4 ft and S 3 ft.
Sat night..Wind W 10 to 15 kt with gusts to 20 kt. Wind waves 3 ft in the evening...becoming 2 ft or less. SWell W 4 to 5 ft.
PZZ700 136 Pm Pdt Mon Apr 23 2018
Synopsis for the far southern california coast..At 1 pm, a 1023 mb high was about 1050 miles west of san diego, and a 1010 mb low was near needles. Weak onshore flow will continue through Wednesday, strengthening on Thursday and Friday. Patchy fog will occur over the coastal waters each night through Wednesday, but visibility should remain above 1 nm.

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 231957 cca
afdsgx
area forecast discussion... Corrected
national weather service san diego ca
1257 pm pdt Mon apr 23 2018

Synopsis
Weak onshore flow will result in more widespread low clouds and fog
nights and mornings, otherwise fair and mild weather will continue
this week under weak high pressure aloft. Low pressure will move
toward the north coast of california late in the week, strengthening
the onshore flow, and deepening the marine layer. Areas of night
and morning coastal low clouds and fog will expand into the
valleys, along with cooling.

Discussion For extreme southwestern california including orange...

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

areas of fog and coastal stratus have burned off this morning
revealing mild and moistly sunny conditions except for a few
clouds lingering at some of the beaches. Expect a renewal of
coastal fog and low clouds this evening through Tuesday morning.

Areas of fog will again affect coastal areas and along the mesas
with visibilities as low as 1 sm.

Weak high pressure aloft and otherwise benign synoptic pattern
will continue a deep marine layer contributing to night and
morning low clouds and fog each day through the end of the week,
with warm and sunny afternoons each day. Patchy dense fog could
bring some impacts near the coast and along the mesas each
morning. There will also be areas of brisk winds through mountain
passes and into adjacent deserts each evening, but with gusts
mainly 35 mph or less.

A low pressure trough will develop off the coast of northern
california during the latter part of the week. Some model
solutions have it going northward this weekend, and others have it
digging southward, moving into southern california around Sunday.

These solutions are bouncing around regarding the intensity of
this trough, but especially the timing of it. It could bring rain,
or nothing. We'll need much more confidence before adding chances
of rain to the forecast. For now, the most responsible forecast
is for cooler weather with an expanded marine layer and more
extensive coastal clouds. Daytime temperatures look to sink below
average by the weekend.

Aviation
231950z... Coast... A few patches of low clouds fog remain at the
beaches this afternoon. More low clouds fog should develop this
evening, again spreading into the coastal areas after 02z Tuesday
with bases 400-700 ft msl and tops to 1100 ft msl. Expect areas of
fog reducing vis to 3-5 miles and locally 1 mile or less on higher
coastal terrain. Low clouds fog likely to spread 5-10 miles inland
by 12z tue. Impacts at coastal TAF sites are likely, with some
uncertainty about the precise timing. Low clouds fog should clear to
the coast between 16z and 18z Tuesday.

Valleys mountains deserts... Few-sct clouds at above 25000 ft msl
with unrestricted vis through Tuesday.

Marine
Patchy fog will occur over the coastal waters each night through
Wednesday, but visibility should remain above 1 nm. Otherwise no
hazardous marine weather is expected through Friday.

Skywarn
Skywarn activation isnot requested. However weather spotters are
encouraged to report significant weather conditions.

Sgx watches warnings advisories
Ca... None.

Pz... None.

Public... Brotherton mm
aviation marine... Pg


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
TIXC1 - Tijuana River Reserve, CA 66 mi77 min NW 2.9 61°F 1017 hPa56°F
SDBC1 - 9410170 - San Diego, CA 76 mi50 min 62°F1015.3 hPa

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 minNW 68.00 miFair60°F55°F84%1015.3 hPa

Wind History from SDM (wind in knots)
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Last 24hr4CalmCalmCalmCalmCalmNE3CalmW3CalmN3CalmCalmCalm5NW6NW96W8W9NW7W9NW6W4
1 day agoCalmCalmCalmCalmE3E3E3E3SE5----------------------------NW5
2 days agoW6S4CalmCalmNE4NE4CalmE3NE3NE3NE5NE4NE4CalmW4W6W10
G14
NW8W7NW75W8W4NW3

Tide / Current Tables for Ensenada, Baja California Norte, Mexico
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Ensenada
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Mon -- 02:13 AM PDT     Moonset
Mon -- 03:48 AM PDT     1.32 meters High Tide
Mon -- 06:08 AM PDT     Sunrise
Mon -- 11:20 AM PDT     -0.02 meters Low Tide
Mon -- 01:11 PM PDT     Moonrise
Mon -- 06:21 PM PDT     1.20 meters High Tide
Mon -- 07:21 PM PDT     Sunset
Mon -- 11:40 PM PDT     0.66 meters Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.911.21.31.31.31.10.80.60.30.1-000.10.40.70.91.11.21.21.10.90.80.7

Tide / Current Tables for Imperial Beach, California
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Imperial Beach
Click for Map
Mon -- 02:16 AM PDT     Moonset
Mon -- 04:14 AM PDT     4.55 feet High Tide
Mon -- 06:09 AM PDT     Sunrise
Mon -- 11:32 AM PDT     -0.35 feet Low Tide
Mon -- 01:11 PM PDT     Moonrise
Mon -- 06:30 PM PDT     4.05 feet High Tide
Mon -- 07:24 PM PDT     Sunset
Mon -- 11:50 PM PDT     2.00 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.83.33.84.34.54.43.93.12.110.2-0.3-0.30.10.91.92.83.6443.73.12.52.1

Weather Map and Satellite Images
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wmap_P
GOES Local Image of Southwest    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 Diego, CA (23,6,7,8)
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Ground Weather Radar Station San Diego, 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.