Marine Weather and Tides
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 6:08AM||Sunset 7:34PM||Friday April 26, 2019 1:44 AM PDT (08:44 UTC)||Moonrise 1:46AM||Moonset 12:07PM||Illumination 57%|
7 Day Forecast for Marine Location Near Marina del Rey, CAHourly EDIT Help
Area Discussion for - Los Angeles/Oxnard, CA  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus66 klox 260308|
area forecast discussion
national weather service los angeles oxnard ca
808 pm pdt Thu apr 25 2019
Synopsis 25 759 pm.
As onshore winds strengthen, expect low clouds and patchy fog in
coastal areas to move further inland Saturday morning. Clouds will
decrease into the afternoon and there is a slight chance of
thunderstorms in the interior mountains Saturday. Coastal clouds
and fog will reoccur nightly into the weekend. Sunday, a storm
system brings a chance of thunderstorms and rain into Monday.
Temperatures will cool through Tuesday.
Short term (thu-sun) 25 807 pm.
once again, another quiet evening across the forecast district.
Earlier today, there were some isolated thunderstorms across
interior sections of ventura sba slo counties which likely
generated some small hail, brief rain and gusty winds. With the
sun setting, this activity has diminished, leaving behind stratus
and fog hugging the coastal plain.
Forecast-wise, the main issue in the immediate short term will be
the marine layer stratus. Latest sounding data indicates a marine
inversion around 1100 feet deep (a bit deeper than Wednesday
evening). With moderate onshore gradients continuing, the stratus
and fog should cover the entire coastal plain and some of the
coastal valleys by Friday morning. Given the depth of the
inversion, there may be some localized dense fog, especially
across the central coast. Otherwise, clear skies should prevail
across interior sections overnight.
Did issue a minor forecast update earlier to scale down pops and
tweak some cloud coverage. Current forecast looks to have a good
handle for tonight and no further updates are planned.
***from previous discussion***
so far cumulus development has been fairly minimal but expecting
some stronger updrafts as daytime heating continues through the
afternoon. If something pops the mostly likely areas would be
northern ventura sb counties and will leave low thunderstorm
chances going through early evening.
Otherwise, marine layer clouds are hugging the coast north and
west of la county and expect clouds to fill in all coastal and
some valley areas overnight. Another round of dense fog possible
for the central coast as the inversion base remains very low.
Not too much change Fri sat. Models showing a little less
instability and moisture so if nothing pops today it's unlikely it
will the next two days, especially Saturday. Weak ridging will
continue Saturday though breaking down through the afternoon as an
upper low approaches from the west. A little stronger onshore flow
expected leading to later marine layer clearing and slightly
Both the NAM and GFS are a little faster than the ECMWF pushing
the low into the area late Sunday into Monday. This would lead to
some additional cooling for all areas with a stronger onshore
push. It also would result in more unstable conditions over the
mountains Sunday afternoon. The NAM is showing similar CAPE li
values as today but with the added bonus of a little better
forcing aloft due to the position of the upper low.
Long term (mon-thu) 25 230 pm.
Very low confidence in the forecast early next week as a low
moving semi-cutoff upper low approaches from the west. The|
operational GFS is still faster than the ECMWF and pretty much has
the low east of the area before noon Monday. However there are a
fair number of GEFS members supporting the slower ECMWF solution.
The outcome will likely be strongly dependent on the timing and
strength of the primary trough dropping out of canada at the same
time as this will be the kicker that finally moves the low east.
Given the uncertainty in the pattern feel it's best to continue
the forecast as is with low pops along with the possibility of
Models not in particularly good agreement after Tuesday so
confidence remains low. The GFS shows the previous trough evolving
into a little inside slider with pretty strong offshore trends by
Wednesday and Thursday. Most of the ensembles and ECMWF support a
slower warm up with less offshore push by mid week and the
forecast definitely trends towards the more conservative trends.
Aviation 25 2310z.
At 2300z, the marine inversion at klax was based at 1000 feet.
The top of the inversion was 4000 feet with a temperature of
21 degrees celsius.
Overall, moderate confidence in 00z TAF package. High confidence
in return of cig vsby restrictions returning to coastal and
coastal valley sites with conditions ranging from ifr to vlifr.
However, only moderate confidence in timing of flight category
changes. Moderate confidence in timing of clearing late Friday
morning and Friday afternoon.
Klax... Overall, moderate confidence in 00z taf. High confidence in
return of cig vsby restrictions (with conditions ranging from ifr
to lifr), but only moderate confidence in timing of flight
Kbur... Overall, moderate confidence in 00z taf. High confidence in
return of cig vsby restrictions (with conditions ranging from lifr
to vlifr), but only moderate confidence in timing of flight
Marine 25 807 pm.
For the outer waters, good confidence in current forecast. Winds
and seas are expected to remain below small craft advisory (sca)
levels through Tuesday.
For the inner waters, good confidence in current forecast. Winds
and seas are expected to remain below SCA levels through Tuesday.
Tonight and Friday morning, local dense fog will impact the
coastal waters with visibilities of 1 nm or less.
Lox watches warnings advisories
Hazard potential outlook (sun-thu)
Isolated thunderstorms are possible Monday across most areas.
Gusty onshore winds could develop Monday and Tuesday in the
mountains and desert.
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|
|ICAC1 - 9410840 - Santa Monica Pier||4 mi||44 min||64°F||1016.2 hPa (+0.0)|
|46221 - Santa Monica Bay, CA (028)||12 mi||44 min||61°F||2 ft|
|BAXC1||17 mi||44 min||ESE 4.1 G 4.1|
|PXAC1||17 mi||50 min||N 1 G 1.9|
|PSXC1||18 mi||44 min||SW 2.9 G 4.1|
|OHBC1 - 9410660 - Los Angeles, CA||19 mi||44 min||61°F||1016.3 hPa (+0.3)|
|PFDC1||19 mi||44 min||S 5.1 G 5.1|
|PFXC1||19 mi||44 min||SW 7 G 8||58°F|
|AGXC1||20 mi||44 min||SSW 7 G 8||57°F||1016.2 hPa (+0.3)|
|PRJC1||21 mi||44 min||WSW 7 G 8|
|46256||22 mi||44 min||60°F||2 ft|
|46222 - San Pedro, CA (092)||25 mi||44 min||61°F||2 ft|
|46253||30 mi||44 min||61°F||2 ft|
|46025 - Santa Monica Basin - 33NM West Southwest of Santa Monica, CA||35 mi||44 min||SW 3.9 G 5.8||56°F||60°F||1015.8 hPa (+0.4)|
Wind History for Santa Monica, CA(wind in knots) EDIT (on/off)  Help
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports
|Los Angeles, Los Angeles International Airport, CA||3 mi||51 min||WSW 4||5.00 mi||Fog/Mist||58°F||55°F||90%||1015.7 hPa|
|Santa Monica, Santa Monica Municipal Airport, CA||5 mi||53 min||W 4||8.00 mi||Overcast||57°F||55°F||93%||1016 hPa|
|Hawthorne, Hawthorne Municipal Airport, CA||6 mi||51 min||SW 4||6.00 mi||Partly Cloudy with Haze||58°F||53°F||84%||1015.9 hPa|
|Los Angeles / USC Campus Downtown, CA||10 mi||57 min||N 0||9.00 mi||Fair||58°F||54°F||87%||1015.6 hPa|
|Burbank - Bob Hope Airport, CA||17 mi||51 min||SE 5||10.00 mi||Fair||59°F||54°F||83%||1014.3 hPa|
|Van Nuys, Van Nuys Airport, CA||17 mi||53 min||SE 3||10.00 mi||Fair||63°F||52°F||68%||1014.5 hPa|
|Long Beach, Long Beach Airport, CA||18 mi||51 min||N 0||10.00 mi||Fair||60°F||54°F||80%||1015.9 hPa|
|Los Alamitos Army Airfield, CA||24 mi||46 min||S 5||10.00 mi||Mostly Cloudy||56°F||56°F||99%||1015.9 hPa|
Wind History from LAX (wind in knots)
|1 day ago||SE||E||E||E||SE||W||W||W||W||W||W||W||W||W||W||W||SW||W||W|
|2 days ago||E||E||E||E||Calm||SE||Calm||Calm||W||W||SW||SW||SW||W||W||W||SW||SW||W||Calm||Calm||E||E |
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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 Los Angeles/Oxnard, CA (4,6,7,8)(on/off)  Help
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