Marine Weather and Tides
5/20/2018 -- NOAA is having problems with the data feed that I use to draw the graphs. They are aware of the issue and working to resolve it. Sometimes changing the location by about a mile will give a correct graph. 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.
|Sunrise 5:43AM||Sunset 7:43PM||Wednesday May 23, 2018 3:45 AM PDT (10:45 UTC)||Moonrise 2:14PM||Moonset 2:22AM||Illumination 61%|
EDIT (on/off)  Help
|PZZ750 Coastal Waters From San Mateo Point To The Mexican Border And Out To 30 Nm- 202 Am Pdt Wed May 23 2018 |
Today..Wind W to 10 kt. Gusts to 15 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft at 10 seconds and sw 4 to 5 ft at 17 seconds.
Tonight..Wind W 10 kt with gusts to 15 kt in the evening... Becoming variable less than 10 kt. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft at 9 seconds and S 4 to 5 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 2 to 3 ft at 10 seconds and S 4 ft at 15 seconds.
Thu night..Wind nw 10 kt. Gusts to 15 kt in the evening. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft at 9 seconds and S 3 to 4 ft at 15 seconds.
Fri..Wind nw 10 to 15 kt with gusts to 20 kt. Wind waves 2 ft or less...becoming 3 ft in the afternoon. Mixed swell W 2 to 3 ft at 7 seconds and S 3 ft at 14 seconds.
Fri night..Wind nw 10 to 15 kt with gusts to 20 kt. Wind waves 3 ft in the evening...becoming 2 ft or less. Mixed swell W 4 to 5 ft and S 2 to 3 ft.
Sat..Wind W 10 to 15 kt with gusts to 20 kt. Wind waves 2 ft or less...becoming 3 to 4 ft in the afternoon. Mixed swell W 3 to 5 ft and S 2 ft.
Sat night..Wind W 10 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 to 5 ft and S 2 ft.
Sun..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 4 to 5 ft and sw 2 ft.
Sun night..Wind W 10 kt with gusts to 15 kt in the evening... Becoming variable less than 10 kt. Wind waves 2 ft or less. Mixed swell W 3 to 5 ft and sw 1 to 2 ft.
|PZZ700 202 Am Pdt Wed May 23 2018 |
Synopsis for the far southern california coast.. At 2 am, a 1017 mb high was about 700 nm southwest of san diego and a 1007 mb low hovered over southern nevada. Weak to moderate onshore flow will prevail through Sunday. An increase in winds is expected Friday and Saturday.
7 Day Forecast for Marine Location Near Potrero, CAHourly EDIT Help
Area Discussion for - San Diego, CA  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus66 ksgx 231016|
area forecast discussion
national weather service san diego ca
316 am pdt Wed may 23 2018
Seasonal weather for the latter part of may will continue with
onshore flow keeping coastal and valley areas cooler with night
and morning low clouds and fog lingering near the coast some
afternoons. The marine layer will become a little shallower
through Thursday... Then deepen for Friday and Saturday... Then
become gradually shallower through early next week. There will be
gusty southwest to west winds in the mountains and deserts each
late afternoon through late evening... Strongest on Friday and
Saturday. Inland high temperatures will cool through Saturday to
10 to 15 degrees below average... Then warm early next week
returning to around average on Tuesday.
Discussion For extreme southwestern california including orange...
san diego... Western riverside and southwestern san bernardino
seasonal weather for the latter part of may in southern california
will continue into next week. Upper level low pressure centered
over the great basin will weaken and move northeastward with weak
high pressure across southern california through Thursday. The
marine layer was near 4000 feet deep Tuesday afternoon with
coastal low clouds extending onto the lower coastal mountain
slopes early this morning. The marine layer will become gradually
shallower into Thursday but remain sufficient deep for coastal low
clouds to extend into the far inland valleys for Wednesday night
into Thursday morning.
High temperatures won't change much through Thursday... Then will
cool for Friday into Saturday as a low pressure system off the
california coast moves slowly inland. It will bring deepening of
the marine layer for Friday into Saturday with coastal low clouds
extending inland onto the lower coastal mountain slopes. There
could also be some patchy drizzle... Especially late Friday night
into Saturday morning. Clearing could be more limited near the
coast. There will be stronger onshore flow for Friday into
Saturday with periods of stronger and gusty southwest to west
winds in the mountains and deserts.
For Sunday through early next week... That low pressure system will|
continue to move slowly inland and weaken. The marine layer will
become a little shallower for Monday and Tuesday... But still be
sufficiently deep for coastal low clouds to extend into portions
of the valleys. High temperatures 10 to 15 degrees below average
on Saturday for inland areas will warm to near average on Monday
and a little above average on Tuesday.
230900z... Coast valleys coastal mountain slopes... Low clouds filling
the coastal basin with bases between 1500 and 2500 feet msl and tops
to 3700 feet. Some terrain obscuration between those elevations.
Some scatter out forecast between 16-20z with low confidence on
timing or location of scatter out. Low clouds will gradually fill
the coastal basin tonight after 03z.
Mountain crests desert mountain slopes deserts... Mostly clear skies
andVFR conditions today and tonight. Some afternoon cumulus over
the higher mountains. Breezy westerly winds through mountain passes
with gusts 25-35 mph late this afternoon and evening.
No hazardous marine conditions are expected through Sunday.
Occasional wind gusts over 20 knots are possible over the outer
waters during the afternoons and evenings Friday and Saturday.
A long-period southerly swell will continue to produce elevated surf
through Thursday mainly in orange and northern san diego counties,
subsiding thereafter. Check the surf zone forecast and the beach
hazards statement for details.
Skywarn activation is not requested. However weather spotters are
encouraged to report significant weather conditions.
Sgx watches warnings advisories
Ca... Beach hazards statement through Thursday afternoon for orange
county coastal areas-san diego county coastal areas.
aviation marine beaches... Mm
Weather Reporting StationsEDIT (on/off)  Help NOTE: Click on distance to see the station location on a map
|Stations||Dist||Age||Wind||Air Temp||Water Temp||Waves||Pressure||DewPt|
|TIXC1 - Tijuana River Reserve, CA||66 mi||60 min||S 1.9||59°F||1014 hPa||53°F|
|SDBC1 - 9410170 - San Diego, CA||76 mi||45 min||1013.5 hPa (-0.5)|
Wind History for USS MIDWAY South Navy Pier, San Diego, CA(wind in knots) EDIT (on/off)  Help
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports
|San Diego, Brown Field Municipal Airport, CA||64 mi||52 min||N 0||10.00 mi||Overcast||59°F||51°F||75%||1013.4 hPa|
Wind History from SDM (wind in knots)
|1 day ago||S||S||S||S||S||SW||S||S||SW||SW||SW||SW||W||SW||W||SW||W||W||W||W||SW||S||S||S|
|2 days ago||W||W||Calm||Calm||W||W||NW||W||W||W||W||W||W||SW||W||SW||SW||SW||SW||SW||S||SW||SW |
EDIT RT Ports Option Weekend mode (on/off) (on/off)  Help One Week of Data
Click for Map
Wed -- 02:22 AM PDT Moonset
Wed -- 04:57 AM PDT 1.22 meters High Tide
Wed -- 05:44 AM PDT Sunrise
Wed -- 11:36 AM PDT 0.08 meters Low Tide
Wed -- 02:13 PM PDT Moonrise
Wed -- 06:22 PM PDT 1.43 meters High Tide
Wed -- 07:41 PM PDT Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
EDIT (on/off)  Help One Week of Data
|Imperial Beach |
Click for Map
Wed -- 02:24 AM PDT Moonset
Wed -- 05:20 AM PDT 4.19 feet High Tide
Wed -- 05:45 AM PDT Sunrise
Wed -- 11:50 AM PDT -0.00 feet Low Tide
Wed -- 02:15 PM PDT Moonrise
Wed -- 06:37 PM PDT 4.96 feet High Tide
Wed -- 07:45 PM PDT Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Weather Map and Satellite Images(on/off)  HelpWeather Map
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 (6,6,7,8)(on/off)  Help
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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.