Marine Weather and Tides
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|Sunrise 6:41AM||Sunset 6:49PM||Sunday September 23, 2018 11:07 PM PDT (06:07 UTC)||Moonrise 6:28PM||Moonset 5:15AM||Illumination 100%|
7 Day Forecast for Marine Location Near Hermosa Beach, CAHourly EDIT Help
Area Discussion for - Los Angeles/Oxnard, CA  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus66 klox 240544|
area forecast discussion
national weather service los angeles oxnard ca
1044 pm pdt Sun sep 23 2018
Synopsis 23 1007 pm.
Afternoon temperatures will cool a bit early in the week, warm
through the end of the week, then cool again during the weekend.
Overnight and morning low clouds and fog will develop along the
coast and at times will push into the adjacent valleys.
Short term (sun-wed) 23 828 pm.
The latest fog product imagery shows the marine layer stratus
more entrenched this evening over the southern california bight,
while clinging the central coast. Stronger onshore flow has led to
a more organized marine layer stratus deck as previously
premised. A deep marine layer near 1000 feet currently at klax
will deepen some into Monday morning to around 1600 feet. Stratus
intrusion into the valleys looks a bit better later tonight and
into Monday morning. Latest GFS lamp and nam MOS guidance bring
some clouds and reduced visibilities into kbur around daybreak
Onshore pressure gradients continue to trend slightly stronger
onshore tonight as an upper-level trough of low pressure over the
washington state brushes northern california. All signs point to
a cooling trend continuing into Monday. Locally gusty onshore
winds could impact the higher valleys such as the santa clarita
valley, the mountains, and antelope valley on Monday afternoon
and evening as onshore pressure gradients should be a tad
The forecast was updated earlier to increase the marine layer
stratus coverage into Monday morning.
***from previous discussion***
for Monday night into Tuesday, there will not be too much change
in the low clouds and fog coverage as the even the la valleys will
again see some patchy low clouds and fog. However, the heights
start to rise and the onshore pressure gradients will weaken
enough to allow some warming across the forecast area, especially
in the mountains and deserts.
By Tuesday night into Wednesday, a rex block forms in the eastern
pacific, with a high latitude upper high and a cutoff low just to
its south. The cutoff low will be well off to the west and its
only effect will be to amplify a downstream ridge over southwest
california. Temperatures will rise across the entire district due
to higher heights and weaker onshore flow. At this point, the
marine clouds should become shallow enough to be restricted to
only the coastal sections.
Long term (thu-sun) 23 126 pm.
The warming trend will continue into Thursday, which should be the
warmest day of the next 7 days. High temperatures on Thursday will
soar close to triple digit territory in the warmest locations,
like the interior valleys and the deserts. Patchy low clouds and
fog should remain along the immediate coastal sections.
On Friday, the upper high off the pac NW coast breaks down and
allows trof energy to approach the washington and oregon coasts,
which in turn, will kick the cutoff low eastward and toward|
northern california. Accordingly, heights will drop, the onshore
flow will again increase, and the temperatures will drop across
For next weekend, the extended models are in decent agreement that the
cutoff low will push into far northern california on Saturday.
Little change is expected for Sunday, before another deeper trof
pushes into northern california early next week.
Aviation 24 0544z.
At 05z, the marine layer was 1400 ft deep at klax. The top of the
marine inversion was around 2000 ft with a temperature of 24c.
Low clouds were widespread in all coastal areas except for
southern l.A. County. Clouds may clear across other portions of
coastal l.A. County for a few hours early this morning, then
should push back into the area. CIGS should spread into the valleys
after midnight. Conds should be mostly ifr to lifr, except
locally vlifr on the central coast. Conds should improve to low
MVFR in coastal sections of l.A. County after daybreak. Expect
clearing by mid to late morning in the valleys, and by noon across
the coastal plain, except possibly mid afternoon near the beaches.
Klax... Low to moderate confidence in the 06z taf. Skies may
scatter out for a couple of hours early this morning. There is a
chance that CIGS will not return until as late as 12z. There is a
30% chance that CIGS will linger through 21z. There is a 20%
chance that conds will be ifr tonight Tue morning.
Kbur... Moderate to high confidence in the 06z taf. There is a 20%
chance that skies will remain clear overnight. There is a 20%
chance that CIGS will arrive as early as 09z.
Marine 23 814 pm.
A marginal small craft advisory northwest of the channel islands
will continue through late tonight. There is a 30 percent chance
that a small craft advisory near point sal and point conception
south to the channel islands could be issued for Monday afternoon
and evening. Otherwise, conditions will remain below advisory
levels through Thursday.
Dense fog with visibility one nautical mile or less will affect
portions of the coastal waters through Monday morning. Highest
confidence for dense fog exists for the coastal waters north of
point conception, but the santa barbara channel may also be
affected late tonight and early Monday morning.
Lox watches warnings advisories
Pz... Small craft advisory in effect until 3 am pdt Monday for
zones 670-673. (see laxmwwlox).
Hazard potential outlook (wed-sun)
No significant hazards expected.
Public... Hall sweet
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|
|PXAC1||9 mi||37 min||E 1 G 1|
|BAXC1||10 mi||43 min||N 1.9 G 2.9|
|OHBC1 - 9410660 - Los Angeles, CA||11 mi||37 min||65°F||1011.2 hPa|
|PSXC1||11 mi||37 min||NNE 2.9 G 2.9|
|PFDC1||12 mi||37 min||SSW 5.1 G 5.1|
|PFXC1||12 mi||37 min||WSW 4.1 G 5.1||66°F|
|46221 - Santa Monica Bay, CA (028)||12 mi||37 min||67°F||2 ft|
|ICAC1 - 9410840 - Santa Monica Pier||12 mi||37 min||WSW 5.1 G 6||65°F||71°F||1011.3 hPa|
|AGXC1||12 mi||37 min||WSW 6 G 7||65°F||1011.2 hPa|
|PRJC1||14 mi||37 min||W 7 G 8|
|46256||15 mi||37 min||64°F||2 ft|
|46222 - San Pedro, CA (092)||17 mi||37 min||70°F||2 ft|
|46253||22 mi||37 min||70°F||2 ft|
|46262||34 mi||37 min||70°F||2 ft|
|46025 - Santa Monica Basin - 33NM West Southwest of Santa Monica, CA||35 mi||27 min||S 3.9 G 5.8||64°F||71°F||1010.8 hPa||63°F|
Wind History for Los Angeles Berth 161,(wind in knots) EDIT (on/off)  Help
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports
|Torrance, Zamperini Field Airport, CA||5 mi||3.3 hrs||WNW 7||10.00 mi||A Few Clouds||64°F||60°F||88%||1010.2 hPa|
|Los Angeles, Los Angeles International Airport, CA||6 mi||74 min||WSW 5||10.00 mi||Mostly Cloudy||66°F||61°F||84%||1010.8 hPa|
|Hawthorne, Hawthorne Municipal Airport, CA||6 mi||74 min||SW 5||10.00 mi||Overcast||66°F||61°F||84%||1010.9 hPa|
|Los Angeles / USC Campus Downtown, CA||13 mi||80 min||N 0||10.00 mi||Overcast||67°F||61°F||81%||1010.4 hPa|
|Long Beach, Long Beach Airport, CA||13 mi||74 min||NW 4||10.00 mi||Fair||67°F||61°F||81%||1010.7 hPa|
|Santa Monica, Santa Monica Municipal Airport, CA||13 mi||76 min||WSW 5||10.00 mi||Overcast||69°F||62°F||78%||1010.8 hPa|
|Fullerton, Fullerton Municipal Airport, CA||22 mi||74 min||SSE 4||10.00 mi||Fair||68°F||60°F||76%||1010.4 hPa|
|Burbank - Bob Hope Airport, CA||24 mi||74 min||ESE 6||10.00 mi||Fair||67°F||61°F||81%||1009.6 hPa|
Wind History from TOA (wind in knots)
|1 day ago||W||W||W||W||W||W||W||W||W||W||W||W||W||W|
|2 days ago||Calm||Calm||W||W||W||W||W||W||W||W||W |
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Wind Forecast for Los Angeles/Oxnard, CA (2,6,7,8)(on/off)  Help
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