Friday, November16, 2018 L-36.com


Marine Weather and Tides
Potrero, CA

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 6:15AMSunset 4:47PM Friday November 16, 2018 1:47 AM PST (09:47 UTC) Moonrise 2:17PMMoonset 12:49AM Illumination 59% Phase: Waxing Gibbous; Moon at 8 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
    EDIT      (on/off)   Help
PZZ750 Coastal Waters From San Mateo Point To The Mexican Border And Out To 30 Nm- 128 Pm Pst Thu Nov 15 2018
Tonight..Wind nw to 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 13 seconds.
Fri..Wind variable less than 10 kt. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft at 15 seconds and S 3 ft at 13 seconds.
Fri night..Wind variable less than 10 kt. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft at 13 seconds and S 3 ft at 15 seconds.
Sat..Wind variable less than 10 kt...becoming W to 10 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 1 to 2 ft at 12 seconds and S 3 ft at 14 seconds.
Sat night..Wind N to 10 kt in the evening... Becoming variable less than 10 kt. Wind waves 2 ft or less. SWell W 1 to 2 ft at 12 seconds. SWell S 3 ft.
Sun..Wind variable less than 10 kt...becoming nw 10 kt in the afternoon. Wind waves 2 ft or less. SWell W 1 to 2 ft.
Sun night..Wind variable less than 10 kt. Wind waves 2 ft or less. SWell W 1 to 3 ft.
Mon..Wind variable less than 10 kt. Wind waves 2 ft or less. SWell W 2 to 3 ft.
Mon night..Wind variable less than 10 kt. Wind waves 2 ft or less. SWell nw 1 to 2 ft.
Tue..Wind variable less than 10 kt...becoming W 10 kt in the afternoon. Wind waves 2 ft or less. SWell nw 1 to 2 ft.
Tue night..Wind variable less than 10 kt. Wind waves 2 ft or less. SWell W 1 to 2 ft.
PZZ700 128 Pm Pst Thu Nov 15 2018
Synopsis for the far southern california coast.. At 1 pm, a 1032 mb high was over western idaho and a 1020 mb low was 100 miles east of the gulf of california. NEutral flow will bring light and variable winds through Monday. A very weak and intermittent coastal eddy circulation is expected tonight into Saturday. Patchy dense fog is possible, but not probable, over the coastal waters Friday morning.


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


Area Discussion for - San Diego, CA
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus66 ksgx 160531 aaa
afdsgx
area forecast discussion
national weather service san diego ca
930 pm pst Thu nov 15 2018

Synopsis
The santa ana winds have weakened and will fade all together as
winds turn weakly onshore on Friday. Patchy night and morning low
clouds and fog may return near the coast with a greater return
expected for the weekend. A weakening low pressure system is
expected to move inland across southern california and northern
baja on Tuesday, bringing more cooling and a deeper marine layer.

Precipitation from this system is not expected at this time. An
upper trough pattern late next week favors an opportunity for
precipitation across the state, including southern california,
for the thanksgiving holiday weekend.

Discussion For extreme southwestern california including orange...

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

high clouds continue to stream overhead which should limit the
extend of low clouds and fog near the coast for most of the night.

Nonetheless there are some indications of a slow surge of near
surface moisture across the coast with some obs indicating dewpoint
temperatures have jumped over 20 degrees in the last couple hours,
including at ksan so by early Friday morning there could be some
marine layer induced low stratus and patchy fog. No significant
changes were made to the forecast this evening and the previous
forecaster discussion remains valid below.

Previous discussion, issued at 251 pm pst:
the santa ana winds have weakened and will fade away all together
by Friday. The offshore surface pressure gradient is lessening and
will eventually become weakly onshore on Friday. This will allow
for onshore wind flow to take over and erode away, slowly, the
very dry air in place at the surface as relatively higher humidity
moves in from the ocean. See fire discussion below for
humidity wind details. Definitely a huge improvement from recent
days, but low humidity remains inland.

The weather pattern will be tranquil Friday and through the
weekend. As the marine layer returns, fog is a potential we are
looking at closely. Fog prospects tonight through Friday morning
look low. There is a better chance of fog, potentially dense,
Friday night through Saturday morning near the coast.

Next week will see a pattern change. A cut off low will develop
over the pacific and head in our direction, but as it moves
towards us the low weakens and the bulk of the moisture moves over
mexico. Global models are keeping any light rain over the ocean or
to our south. So it is not looking like any rain with this system.

Operational global model runs keep wavering on placement of upper
trough pacific storms for the thanksgiving holiday weekend. The
gfs ensemble mean does show precip, albeit light, starting in
socal late thanksgiving day, and more so Friday or into next
weekend. The favored areas for appreciable precipitation lie north
of our area over central and northern california. CPC outlook
does show a greater probability for above normal precipitation for
the state, including southern california, for the thanksgiving
holiday weekend. Right now, light amounts are favored here in the
south with higher amounts towards norcal.

Aviation
160320z... Sct-bkn clouds at or abv 20000 feet msl with unrestricted
vis through Friday morning.

Marine
Patchy dense fog is possible, but not probable, in the coastal
waters Friday morning. Areas of dense fog with visibility 1 nm or
less more likely Saturday morning. Otherwise, no hazardous marine
weather through Monday.

Fire weather
The santa ana winds have weakened and will fade as winds turn
weakly onshore on Friday. Onshore winds will strengthen slightly on
Saturday. Critical relative humidity will continue through this evening
away from the coast. While humidity will moderate on Friday, minimum
relative humidity values in the teens are still forecast for part of
the inland valleys and across the mountains and deserts.

Weak offshore flow may return for inland areas for late Saturday
night into Sunday morning and late Sunday night into Monday
morning with gusty east to northeast winds mostly 30 mph or less
near the coastal slopes of the mountains and below passes and
canyons. The humidity for those areas could fall to around 15
percent at times, mainly during the late morning into the
afternoon on Sunday and Monday.

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

Sgx watches warnings advisories
Ca... None.

Pz... None.

Public... Gregoria jmb
aviation marine... Pg


Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
TIXC1 - Tijuana River Reserve, CA 66 mi63 min NE 2.9 56°F 1017 hPa37°F
SDBC1 - 9410170 - San Diego, CA 76 mi36 min 1015.9 hPa

Wind History for USS MIDWAY South Navy Pier, San Diego, CA
(wind in knots)    EDIT      (on/off)   Help
Last
24hr
1 day
ago
2 days
ago

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
San Diego, Brown Field Municipal Airport, CA64 mi55 minSE 58.00 miFair54°F27°F35%1016.1 hPa

Wind History from SDM (wind in knots)
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
Last 24hrCalmCalmE6NE3E3NE3NE3CalmCalmNW5NW5W7
G14
W9W8W5CalmCalmCalmCalmCalmNE4E4E4SE5
1 day agoSE13
G17
SE9
G17
SE13
G17
SE13SE14SE16
G19
SE13
G19
SE12
G18
NW45W6NW5W8W8W5W3E10SE4CalmCalmNE5CalmCalmSW3
2 days agoCalmE56CalmE16E13SE13
G19
SE15
G20
SE19
G24
SE17
G24
SE16
G24
SE15E14
G21
NW5E10
G15
CalmSE5E5E4E3E4NE5E3E8

Tide / Current Tables for Ensenada, Baja California Norte, Mexico (3)
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Ensenada
Click for Map
Fri -- 05:10 AM PST     1.19 meters High Tide
Fri -- 06:16 AM PST     Sunrise
Fri -- 10:53 AM PST     0.74 meters Low Tide
Fri -- 01:16 PM PST     Moonrise
Fri -- 03:59 PM PST     1.09 meters High Tide
Fri -- 04:46 PM PST     Sunset
Fri -- 10:41 PM PST     0.23 meters Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
0.40.60.811.11.21.21.110.80.80.70.80.911.11.110.90.80.60.40.30.2

Tide / Current Tables for Ensenada, Baja California Norte, Mexico
   EDIT      (on/off)   Help   One Week of Data
Ensenada
Click for Map
Fri -- 05:06 AM PST     1.19 meters High Tide
Fri -- 06:16 AM PST     Sunrise
Fri -- 10:53 AM PST     0.73 meters Low Tide
Fri -- 01:16 PM PST     Moonrise
Fri -- 04:00 PM PST     1.08 meters High Tide
Fri -- 04:46 PM PST     Sunset
Fri -- 10:39 PM PST     0.23 meters Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
0.40.60.811.11.21.21.10.90.80.80.70.80.9111.110.90.70.50.40.30.2

Weather Map and Satellite Images
       (on/off)   HelpWeather Map
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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for San Diego, CA (4,6,7,8)
      (on/off)   Help

Ground Weather Radar Station San Diego, CA
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

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.