Marine Weather and Tides
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
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|Sunrise 6:18AM||Sunset 7:34PM||Wednesday August 21, 2019 12:03 AM PDT (07:03 UTC)||Moonrise 11:12PM||Moonset 11:46AM||Illumination 69%|
7 Day Forecast for Marine Location Near Avalon, CAHourly EDIT Help
Area Discussion for - Los Angeles/Oxnard, CA  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus66 klox 210644|
area forecast discussion
national weather service los angeles oxnard ca
1144 pm pdt Tue aug 20 2019
Synopsis 20 718 pm.
Afternoon temperatures will be above normal for most of this week
with the warmest day on Wednesday and the coolest on Friday. There
will be areas of overnight and morning coastal low clouds and fog
this week with greater coverage and a push into adjacent valleys
by the weekend.
Short term (tue-fri) 20 911 pm.
The latest satellite imagery indicates an upper-level ridge of
high pressure centered over southern california, while an upper-
level trough of low pressure is centered off the british columbia
coast. Ridging aloft will build overhead through Wednesday and
continue a warming trend across the region. An update will issue
to touch up minimum temperatures for tonight, but the forecast
temperatures for Wednesday look agreeable.
Weakening onshore flow and a thin marine layer has isolated the
low clouds and fog to just a few patches along the central coast
and along the western portion of the channel islands. Stratus
coverage will remain patchy tonight and into Wednesday morning
across the coastal areas. The best coverage will be for areas
north of point conception. With the shallow marine layer depth,
any stratus will likely form dense fog, especially along the
A tightening northerly gradient will bring gusty sundowner winds
to southern santa barbara county tonight, and breezy to locally
windy conditions through the interstate 5 corridor. Ksba-ksmx
surface pressure gradients have tightened to near -3.5 mb this
evening and gusty to around 45 mph have been observed west goleta
toward gaviota. Similar winds could develop again on Wednesday
afternoon and night.
An update will be issued shortly.
***from previous discussion***
Wednesday should be the warmest day as a trough moving through to
the north will introduce a cooler air mass and onshore trends on
Thursday and Friday. By Friday daytime highs should be very close
to normal and the marine layer will likely return to all coastal
areas as well and possibly some valleys.
Long term (sat-tue) 20 204 pm.
Fairly uneventful period of weather over the weekend into early
next week. The ridge rebuilds Saturday and Sunday which should
lead to a few degrees of warming in most areas, but moderate
onshore flow is expected to remain in place so we'll likely see a
shallow but widespread marine layer near the coast during the
night and morning hours at least.
No monsoon moisture expected through the weekend. The GFS shows a
tropical cyclone spinning up off the southern baja coast early
next week and it's possible we could see some mid and high clouds
from it but too dry at lower levels to pose much of a risk for
Aviation 21 0644z.
At 0545z, the marine layer was 800 feet deep at klax. The top of
the inversion was around 1350 feet with a temp of 26c.
Areas of low clouds have pushed into the central coast this evening.
Low clouds are expected to become widespread on the central coast
and in the santa ynez valley overnight with generally lifr to vlifr
conds. Skies should clear by mid morning, except late morning near
the coast. Elsewhere, skies are expected to remain clear, with
just a chance of ifr CIGS in coastal sections of l.A. County.
Klax... Moderate to high confidence in the 06z taf. There is a
20-30% chance ifr CIGS between 10z and 16z.
Kbur... High confidence in the 06z TAF withVFR conds thru the pd.
Marine 20 842 pm.
For the outer waters, moderate-to-high confidence in the current
forecast. Small craft advisory (sca) level winds are expected to
continue through at least early Wednesday afternoon. There is a
30 percent chance that winds will briefly drop below SCA levels
late tonight and Wed morning. Gale warnings have been issued
across the outer waters including areas northwest of san nicolas
island from Wednesday afternoon through early Thursday morning.
For the nearshore waters north of point sal, moderate confidence
in the current forecast. A SCA remains in effect through
late tonight. There is a 60 percent chance of SCA level winds
during the afternoon and evening Wednesday and a 40-50 percent
chance on Thursday afternoon and evening.
For the inner waters south of point conception, moderate-to-high
confidence in current forecast. A SCA remains in effect through
late tonight across the western portions of the santa barbara
channel. There is a 60 percent chance for SCA level NW to N winds
across the western portions of the sba channel during the same
times Wednesday. Sundowner winds are on Thursday.
Fire weather 20 329 pm.
Very warm and dry conditions will continue across interior sections
through Thursday. Peak temperatures are expected Wednesday when
warmest mountain, desert, and valley areas will top 100 degrees.
Minimum humidities between 10 and 20 percent will be common across
interior areas through Thursday, with some single digit readings in
the mountains and antelope valley, especially Wednesday. In addition
to the typical gusty onshore winds in the afternoon and evening
hours, there will be some northerly breezes during the overnight and
early morning hours across the interstate 5 and highway 33 corridors
in the mountains and santa clarita valley.
Gusty sundowner winds with warm and dry conditions will also bring
elevated fire danger to the santa barbara south coast and foothills
through Wednesday night, especially western portions where winds
will be strongest. Wind gusts between 35 and 45 mph will be common
in the canyons and foothills from gaviota to goleta during the late
afternoon through nighttime hours (with isolated gusts to 50 mph near
gaviota), along with gusts in the 25 to 35 mph range during the
overnight hours in the hills above montecito and carpinteria. Minimum
humidities through this evening are expected to remain in the 25 to
40 percent range, then lower to between 15 and 30 percent on
Wednesday afternoon and evening, when temperatures will likely climb
above 90 degrees in warmest foothill and canyon locations. Peak
santa barbara-santa maria gradients are expected to be around -4.0
mb this evening and Wednesday evening, with peak santa barbara-
bakersfield gradient expected to be -3.0 to -3.5 mb late tonight.
Lox watches warnings advisories
Ca... Wind advisory in effect until 3 am pdt Wednesday for zones
39-52. (see laxnpwlox).
Pz... Small craft advisory in effect until 3 am pdt Wednesday for
zones 645-650. (see laxmwwlox).
Small craft advisory in effect until 3 pm pdt Wednesday for
zones 670-673-676. (see laxmwwlox).
Gale warning in effect from 3 pm Wednesday to 3 am pdt
Thursday for zones 670-673-676. (see laxmwwlox).
Hazard potential outlook (fri-tue)
Elevated surf and strong rip currents are possible at area beaches
early next week.
Public... Hall mw
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|
|46222 - San Pedro, CA (092)||19 mi||41 min||70°F||3 ft|
|46221 - Santa Monica Bay, CA (028)||24 mi||38 min||71°F||3 ft|
|OHBC1 - 9410660 - Los Angeles, CA||24 mi||64 min||64°F||1012 hPa (+0.5)|
|46253||25 mi||34 min||69°F||3 ft|
|46256||27 mi||34 min||63°F||2 ft|
|46025 - Santa Monica Basin - 33NM West Southwest of Santa Monica, CA||28 mi||34 min||NNW 1.9 G 3.9||66°F||1011.8 hPa||66°F|
|PFXC1||28 mi||64 min||S 4.1 G 4.1|
|PSXC1||28 mi||64 min||SSE 2.9 G 4.1|
|PRJC1||29 mi||64 min||SE 1.9 G 4.1|
|ICAC1 - 9410840 - Santa Monica Pier||35 mi||64 min||E 6 G 7||67°F||69°F||1011.7 hPa (+0.4)|
Wind History for Angels Gate, CA(wind in knots) EDIT (on/off)  Help
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports. Follow links for more data.
|Avalon Catalina Airport, CA||14 mi||73 min||WNW 5||10.00 mi||Fair||75°F||35°F||23%||1010.8 hPa|
Link to 5 minute data for KAVX
Wind History from AVX (wind in knots)
|1 day ago||SW||SW||SW||Calm||Calm||E||E||NE||Calm||NW||W||W||W||SW||SW|
|2 days ago||SW||SW||S||E||E||Calm||SE||Calm||E||E||NE||Calm||E||Calm||NE||E||E||NW||W||SW||W |
EDIT Weekend mode (on/off) (on/off)  Help One Week of Data
EDIT (on/off)  Help One Week of Data
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 Los Angeles/Oxnard, CA (3,6,7,8)(on/off)  Help
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