Marine Weather and Tides
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 6:59AM||Sunset 6:13PM||Thursday October 19, 2017 2:17 AM PDT (09:17 UTC)||Moonrise 6:47AM||Moonset 6:35PM||Illumination 1%|
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|PZZ655 Inner Waters From Point Mugu To San Mateo Pt. Ca Including Santa Catalina And Anacapa Islands- 856 Pm Pdt Wed Oct 18 2017 |
Tonight..Winds variable 10 kt or less. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft at 7 seconds and S 3 ft at 15 seconds. Patchy dense fog with vsby 1 nm or less after midnight.
Thu..NE winds 5 to 10 kt, becoming W 10 to 15 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft at 7 seconds and S 3 ft at 15 seconds.
Thu night..Western portion, W winds 20 to 30 kt. Elsewhere, W winds 5 to 10 kt becoming 10 to 15 kt after midnight. Combined seas 3 to 5 ft dominant period 7 seconds. Patchy drizzle after midnight.
Fri..Western portion, nw winds 15 to 20 kt becoming W 15 to 25 kt in the afternoon. Elsewhere, nw winds 5 to 10 kt becoming W 10 to 15 kt in the afternoon. Wind waves 2 to 4 ft. W swell 2 to 3 ft at 7 seconds, building to 3 to 5 ft at 8 seconds in the afternoon. S swell 2 ft. Patchy drizzle in the morning.
Fri night..Western portion, nw winds 20 to 25 kt becoming 10 to 15 kt after midnight. Elsewhere, sw winds 10 to 15 kt becoming N after midnight. Combined seas 5 to 7 ft dominant period 13 seconds.
Sat..NE winds 15 to 20 kt, becoming W 10 to 15 kt in the afternoon. Wind waves 2 to 3 ft. W swell 3 to 4 ft at 16 seconds.
Sat night..NW winds 10 to 15 kt, becoming N 5 to 10 kt after midnight. Wind waves 2 ft or less. W swell 2 to 3 ft.
Sun..NW winds 10 to 15 kt. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft and S 2 ft.
Mon..N winds 15 to 20 kt with gusts to 25 kt. Combined seas 3 to 5 ft.
|PZZ600 856 Pm Pdt Wed Oct 18 2017 |
Synopsis for the southern california coast and santa barbara channel including the channel islands national marine sanctuary and national park..At 03z...or 8 pm pdt...a 1021 mb high was located 600 nm west of point conception and a 1008 mb thermal low was over se california with a trough of low pressure along the southern ca coast. The high over the eastern pac will move south through Thu night, with a surface cold front expected to move into the northern outer waters by late Thu night.
7 Day Forecast for Marine Location Near Balboa, CAHourly EDIT Help
Area Discussion for - San Diego, CA  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus66 ksgx 190418|
area forecast discussion
national weather service san diego ca
917 pm pdt Wed oct 18 2017
A deepening trough over the west will bring a cooling trend and a
deepening marine layer through Friday. Expect night and morning
marine layer clouds over the coast and western valleys tonight and
Thursday morning and then over the coast, valleys and coastal
slopes with possible drizzle Thursday night and Friday morning.
Locally strong and gusty west winds also likely in the mountains
and deserts Thursday and Friday. Santa ana winds and a building
strong ridge of high pressure will bring significant warming and
drying to the region Saturday through Monday. Hot conditions
possible all the way to the coast Sunday and Monday, with weather
almost as hot on Tuesday.
Discussion For extreme southwestern california including orange...
san diego... Western riverside and southwestern san bernardino
No changes were made to the forecast this evening. The previous
forecast discussion remains valid, below...
afternoon water vapor satellite imagery shows a weak short-wave
trough moving east over southern nevada san bernardino county with
a few high clouds over the deserts associated with this trough.
Humidity observations at the coast indicate dew points in the
50s 60s, which shows that the marine layer has finally returned.
The 12z miramar sounding shows a surface based marine layer
inversion and a moist layer from around 700 mb to 400 mb. Pressure
gradients continue to trend onshore this morning, with the san
diego to thermal gradient up to 4.5 mb onshore, while 24 hours ago
it was only 2.3 mb onshore. With the return of onshore flow and
large scale trough deepening over the pacific northwest,
temperatures at 1 pm are around 5-10 degrees lower than 24 hours
ago, although highs today will still be several degrees above
normal. Local WRF shows that marine layer stratus will likely
develop and deepen tonight in the coast and western valleys, with
help from a coastal eddy which appears to already be developing
according to coastal wind observations.
The cooling trend will continue through Friday as the trough
continues to deepen and move inland, with possibly enough lift and
moisture for some drizzle and or light showers over and west of
the coastal slopes Friday morning. Expect highs 5-10 degrees
below normal by Friday. Onshore flow will strengthen as well, with
onshore pressure gradients forecast to reach around 10 mb from san
diego to las vegas on Friday, so expect west winds gusting 35-45
mph with local gusts to 50 mph in the mountains and deserts
Thursday and Friday. The marine layer will continue to deepen as
well (up to 4000-4500 ft msl), with stratus filling the coastal
basin and likely moving into the passes and coastal slopes
Thursday night Friday morning and again Friday night before
offshore winds clear clouds out from the north Saturday morning.
On Saturday, surface high pressure over the great basin will build
in the wake of the trough that moves over that area. This will
create offshore pressure gradients at around 7 mb from san diego
to tonopah, resulting in weak santa ana winds that day. A building
ridge from the southwest, in addition to the santa ana winds, will
result in significant warming that day in the coast and valleys,
as well as clearing out the marine layer. The ridge will will
continue to build over the region Sunday through Monday, becoming
anomalously strong by Monday with 500 mb heights reaching 596 dm
according to the ECMWF and canadian models (gfs is weaker at
around 595 dm). Although they do not look strong at the moment
(offshore pressure gradients from san diego to tonopah increasing
to 10 mb with 850 mb winds of only 10-15 kt), the santa ana winds
will continue as well, bringing hot weather all the way to the|
coast. The ECMWF also shows 850 mb temperatures reaching 24 deg c
on Monday, which translates to 101+ degree surface temperatures
west of the mountains. Once again, the GFS isn't as warm, showing
850 mb temperatures around 23 deg c. Although we start to trend
back onshore on Tuesday, the ridge could be almost as strong
which means that inland areas may be almost as hot as they were on
Monday, and in the case of the mountains and deserts they may be
190330z... Coast valleys... Low clouds will continue to form along the
coast and over the western valleys through 15z Thursday. Look for
ceilings near 1,000 ft msl and tops around 1,600 ft msl. Reduced
visibility of 1 sm or less is possible near higher coastal and
valley terrain. Clearing is expected between 16z and 18z Thursday,
with sct AOA 20,000 ft msl and light winds between 18z Thursday and
00z Friday. Low clouds will return to the coast after 00z Friday,
with bases near 2000 ft msl. Forecast confidence is moderate.
Mountains deserts... Sct AOA 20,000 ft msl, unrestricted visibility,
and light winds will continue through 22z Thursday. Westerly winds
will increase after 22z, resulting in mountain wave activity over
and east of the desert slopes, areas of llws and moderate
up downdrafts. Patchy bldu is also possible. Kpsp and ktrm will see
increasing NW winds after 22z. Forecast confidence is high.
Quiet conditions over the coastal waters on Thursday will give way
to more unsettled weather Friday as a front traverses the region.
Northwest winds will increase to 15-25 kt Friday, and be accompanied
by combined seas of 5-9 ft. Highest seas and strongest winds can be
expected near and south of san clemente island. Conditions will
slowly improve on Saturday, with light winds and tamer seas forecast
for early next week.
A 2-3 ft 14-16 second south southwest swell will continue to impact
beaches north of solana beach through Thursday. This will produce
elevated surf of 3-5 ft with sets to 6 ft, along with strong rip and
longshore currents. A beach hazard statement remains in effect
through Thursday evening to account for these conditions. The
south southwest swell will diminish Thursday night, and be replaced
by an elevated short period northwest swell Friday and Saturday.
Increasingly cool and more humid today through Friday as a trough
moves in over the west. Gusty westerly onshore winds in mountains
and deserts Thursday and Friday, with gusts 30-40 mph and local
Weak to moderate strength santa ana winds likely Saturday through
at least Monday, with day-time humidity falling down to at or
below 10 percent Sunday and Monday (with very poor overnight
recoveries) along with hot conditions and gusty northeast winds
(15-25 mph gusting 30-40 mph and locally 50 mph). This would
likely result in critical fire weather conditions through and
below the mountain passes and into the coastal slopes and
foothills Sunday through Monday, and possibly into Tuesday as
well. Also, late Saturday there could be critical fire weather
conditions near the cajon pass.
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 evening for orange
county coastal areas-san diego county coastal areas.
Public fire weather... Harrison jmb
aviation marine beaches... Albright
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|
|46253||14 mi||48 min||69°F||4 ft|
|46256||17 mi||56 min||67°F||5 ft|
|PRJC1||18 mi||48 min||WSW 2.9 G 2.9|
|PFXC1||19 mi||48 min||SSW 1 G 1||67°F|
|PFDC1||20 mi||48 min||Calm G 1|
|AGXC1||20 mi||48 min||WSW 1.9 G 2.9||67°F||1012.7 hPa|
|PSXC1||21 mi||48 min||Calm G 1.9|
|OHBC1 - 9410660 - Los Angeles, CA||21 mi||48 min||68°F||1012.8 hPa|
|BAXC1||21 mi||48 min||S 1 G 1|
|PXAC1||22 mi||54 min||NNW 1.9 G 1.9|
|46222 - San Pedro, CA (092)||22 mi||48 min||68°F||4 ft|
|46242 - Camp Pendleton Nearshore, CA (043)||36 mi||80 min||69°F||4 ft|
|46224 - Oceanside Offshore, CA (045)||37 mi||48 min||71°F||4 ft|
|46221 - Santa Monica Bay, CA (028)||43 mi||48 min||67°F||4 ft|
|ICAC1 - 9410840 - Santa Monica Pier||43 mi||48 min||NE 4.1 G 5.1||65°F||68°F||1012.9 hPa|
Wind History for Los Angeles Pier J, CA(wind in knots) EDIT (on/off)  Help
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports
|John Wayne-Orange County Airport, CA||7 mi||25 min||ESE 3||10.00 mi||Overcast||68°F||63°F||84%||1012.3 hPa|
|Los Alamitos Army Airfield, CA||16 mi||80 min||N 0||3.00 mi||Fog/Mist||65°F||63°F||96%||1012.8 hPa|
|Fullerton, Fullerton Municipal Airport, CA||20 mi||25 min||E 3||6.00 mi||Fog/Mist||68°F||64°F||90%||1012.1 hPa|
|Long Beach, Long Beach Airport, CA||21 mi||25 min||N 0||8.00 mi||Partly Cloudy||66°F||63°F||90%||1012.5 hPa|
Wind History from SNA (wind in knots)
|1 day ago||Calm||Calm||Calm||Calm||Calm||Calm||SW||Calm||Calm||S||W||SW||W||W||S||SW||SW||S||S||Calm||Calm||Calm||Calm|
|2 days ago||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||SW||S||SW||W||SW||W||SW||SW||S||Calm||Calm||SW||Calm||Calm||Calm|
EDIT RT Ports Option Weekend mode (on/off) (on/off)  Help One Week of Data
|Balboa Pier |
Click for Map
Thu -- 03:18 AM PDT 0.73 feet Low Tide
Thu -- 06:47 AM PDT Moonrise
Thu -- 06:59 AM PDT Sunrise
Thu -- 09:21 AM PDT 5.66 feet High Tide
Thu -- 12:12 PM PDT New Moon
Thu -- 03:57 PM PDT 0.17 feet Low Tide
Thu -- 06:12 PM PDT Sunset
Thu -- 06:35 PM PDT Moonset
Thu -- 09:55 PM PDT 4.70 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
EDIT (on/off)  Help One Week of Data
|Los Patos (highway bridge) |
Click for Map
Thu -- 04:28 AM PDT 0.48 feet Low Tide
Thu -- 06:47 AM PDT Moonrise
Thu -- 07:00 AM PDT Sunrise
Thu -- 10:29 AM PDT 4.91 feet High Tide
Thu -- 12:12 PM PDT New Moon
Thu -- 05:08 PM PDT 0.11 feet Low Tide
Thu -- 06:13 PM PDT Sunset
Thu -- 06:35 PM PDT Moonset
Thu -- 11:02 PM PDT 4.08 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Weather Map and Satellite Images(on/off)  Help
|Weather Map ||IR Satellite Image from GEOS|
GOES Local Image of Southwest EDIT
Wind Forecast for San Diego, CA (5,6,7,8)(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.