Saturday, October21, 2017 L-36.com


Marine Weather and Tides
Torrance, CA

Version 3.4
What's New / NOTES
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 7:03AMSunset 6:12PM Saturday October 21, 2017 8:45 AM PDT (15:45 UTC) Moonrise 8:43AMMoonset 7:48PM Illumination 2% Phase: Waxing Crescent; Moon at 1 days in cycle
NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.
Marine Forecasts
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PZZ655 Inner Waters From Point Mugu To San Mateo Pt. Ca Including Santa Catalina And Anacapa Islands- 310 Am Pdt Sat Oct 21 2017
Today..N winds 10 to 15 kt. Wind waves 1 to 3 ft. W swell 3 to 5 ft at 15 seconds.
Tonight..NW winds 10 to 15 kt, becoming N 5 to 10 kt after midnight. Wind waves 2 ft or less. W swell 3 to 4 ft at 14 seconds.
Sun..N winds 5 to 10 kt. Wind waves 2 ft or less. W swell 3 ft at 13 seconds. S swell 2 ft.
Sun night..NW winds 10 to 15 kt. Wind waves 2 ft or less. W swell 3 to 4 ft at 13 seconds.
Mon..From point mugu to santa Monica, ne winds 15 to 20 kt with local gusts to 25 kt. Elsewhere, N winds 5 to 10 kt becoming nw 10 to 15 kt in the afternoon. Wind waves 1 to 3 ft. Mixed swell W 2 to 3 ft at 13 seconds and S 2 ft at 18 seconds.
Mon night..N winds 10 to 15 kt. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft and S 2 ft.
Tue..N winds 15 to 20 kt with gusts to 25 kt. Combined seas 3 to 5 ft.
Wed..W winds 5 to 10 kt. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft and S 2 ft.
PZZ600 310 Am Pdt Sat Oct 21 2017
Synopsis for the southern california coast and santa barbara channel including the channel islands national marine sanctuary and national park..At 09z...or 2 am pdt...a 1026 mb high pressure center was located 500 nm west of point conception and a 1005 mb low pressure center was located over southern nevada. Advisory level winds and seas will subside through the weekend.

7 Day Forecast for Marine Location Near Torrance, CA
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location: 33.82, -118.38     debug


Area Discussion for - Los Angeles/Oxnard, CA
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Fxus66 klox 211211
afdlox
area forecast discussion
national weather service los angeles oxnard ca
511 am pdt Sat oct 21 2017

Aviation discussion updated...

Synopsis
Gusty northwest to north winds will affect much of the forecast
area through this morning. The winds will shift to the northeast
this afternoon with gusty santa ana winds persisting through
Tuesday. Temperatures will be on the increase through early next
week with record heat possible Monday and Tuesday. For Wednesday
through Friday, a cooling trend is expected.

Short term (tdy-mon)
overall, 00z models in very good synoptic agreement through the
period. At upper levels, ridge will build over california through
Monday. Near the surface, offshore gradients will strengthen
through the period.

Forecast-wise, two main issues through the short term period will
be temperatures and offshore winds. With respect to temperatures,
all ingredients are in place for a significant round of heat for
southwestern california. H5 heights increase from 587 dm today to
594-595 dm by Monday with an associated increase in thicknesses.

Near the surface, offshore gradients will be on the increase
through Monday with the NAM forecasting a -5.9 mb lax-dag
gradient Monday morning (while the GFS forecasts -4.0 mb). The
combination of these parameters indicate an impressive warming
trend from a few degrees above normal today to potentially
widespread record high temperatures on Monday. Given the potential
for record heat on Monday, excessive heat watches will remain in
effect for the south coast of santa barbara county as well as the
coasts valleys of ventura and los angeles counties.

As for winds, currently there are some very gusty northerly winds
across the santa ynez range (in southern santa barbara county) as
well as across the mountains of ventura and los angeles counties
and wind advisories will remain in effect for these areas through
10 am this morning for southern sba county and 200 pm for the
ventura la mountains. By this afternoon, the flow will turn
northeasterly, setting the stage for an extended period of santa
ana winds. At this time, all models indicate increasing offshore
gradients and upper level wind support tonight through Monday. So,
northeast winds will be on the increase across ventura and los
angeles counties. At this time, expect advisory-level winds to be
localized tonight Sunday, so will not issue or extend any
advisories at this time. However for Sunday night Monday, the
likelihood of widespread advisory-level winds across ventura and
los angeles counties looks pretty good. For san luis obispo and
santa barbara counties, the northeast winds tonight through Monday
will be noticeably weaker.

As for clouds, there are some clouds this morning across interior
sections of san luis obispo and santa barbara counties as well as
the northern mountain slopes of ventura and los angeles counties.

These clouds will dissipate later this morning, then clear skies
will prevail across the entire area this afternoon through Monday.

Long term (tue-fri)
for the extended, 00z models remain in good synoptic agreement
through thurday then start to diverge on Friday. At upper levels,
ridge peaks in strength on Tuesday then a deep trough will drop
across the interior west Wednesday and Thursday. On Friday, the
gfs starts to build a ridge in from the west while the ecmwf
develops an upper low over the 4-corners area. Near the surface,
offshore gradients will peak on Tuesday then weaken Wednesday and
Thursday, turning weakly onshore by Thursday. On Friday, the gfs
continues with weak onshore gradients while the ECMWF indicates
offshore gradients.

Forecast-wise, Tuesday will be a very hot and dry day with another
round of record high temperatures likely for many areas with gusty
santa ana winds across the area. So, the excessive heat watch
still looks good for Tuesday along with the high likelihood of
wind advisories for ventura and los angeles counties.

On Wednesday, a noticeable cooling trend will begin as the upper
ridge weakens and weak onshore flow returns to the area. This
cooling trend will continue on Thursday for all areas. For Friday,
will go with near-persistence forecast for temperatures, given the
model discrepancies at this time. Additionally, there could be
some stratus redeveloping across the coastal plain by Friday
morning (and maybe as early as Thursday morning).

Aviation 21 12z...

at 08z at klax... There was no notable marine inversion per amdar
soundings. At 12z however there was a cloud deck near 1900 feet.

Overall... High confidence in the current tafs. Klgb will have an
MVFR cig periodically through 20z and there is a thirty percent
chance of the cig impacting klax as well. Otherwise and elsewhere
vfr conditions will prevail. Locally strong and gusty west to
northwest winds continue to diminish across the region then gusty
northwest winds strengthen after 15z at ksbp and ksmx.

Klax... High confidence in the current taf. There is a thirty
percent chance of an MVFR cig periodically impacting the terminal
through 18z. OtherwiseVFR conditions will prevail. There is a
twenty percent chance of east winds to 10 knots 13z-16z and again
22 10z-17z.

Kbur... High confidence in the current taf.VFR conditions will
prevail throughout the forecast period.

Marine 21 200 am...

for the outer waters... Winds will diminish today but remain at
small craft advisory (sca) level through Monday.

For the inner waters north of point sal... Winds will diminish
today but remain at SCA level through Sunday.

For the inner waters south of point conception... Winds will
diminish to below SCA level by mid morning. The strongest winds
will be across western sections and the western santa barbara
channel. From Sunday night through Tuesday, there is a sixty
percent chance of SCA level northeasterly winds nearshore from
ventura southward.

A large long-period northwest swell will move through the coastal
waters through the weekend. Seas up to 15 feet are likely across
the outer and northern waters. There will be dangerous breaking
waves on the central coast through the weekend with dangerous
conditions in and near harbors. South of point conception, the
westerly swell will contribute to continued hazardous conditions
along the coastline through the weekend.

Beaches 21 200 am...

a large long-period northwest swell will move through the coastal
waters through the weekend.

North of point conception... A high surf advisory continues through
Sunday morning. Surf will increase to between 14 and 20 feet
through midday then will begin to diminish this afternoon but
remain above 10 feet through Tuesday. Some impacts from these
large and powerful waves and strong currents are the risk of ocean
drowning and sneaker waves that can suddenly overrun previously
dry beaches and jetties. With surf approaching 20 feet along some
northwest facing beaches, low lying beach parking lots, harbor
walkways and campgrounds could see local coastal flooding during
the peak of the highest surf.

South of point conception... A beach hazards statement continues
through Sunday afternoon for surf of 4 to 7 feet with local sets
to 8 feet. Dangerous rip currents are a primary impact of this
elevated surf.

Fire weather 21 215 am...

northerly flow today and tonight is expected to bring a warming
and drying trend along with elevated fire danger to the region.

The strongest winds during this period will remain focused across
the mountains, especially the interstate 5 corridor and santa ynez
mountains where gusts between 40 and 50 mph can be expected.

These areas will experience the strongest upper level support as
well as strong north-south offshore pressure gradients (lax-
bakersfield and sba bakersfield gradients expected to peak
between -6 and -6.5 mb late tonight). A red flag warning is now
in effect for the la ventura santa barbara county mountains and
santa clarita valley.

From Sunday through Tuesday, there is the potential for a
prolonged duration of gusty santa ana winds with hot and very dry
conditions. The strongest santa ana winds during this period is
expected to be Monday through Tuesday when gusts between 40 and 50
mph will be possible across wind prone passes and canyons of los
angeles and ventura counties. Record breaking triple digit heat
and humidities lowering into the single digits and lower teens
will be possible during this time. In addition, very warm and dry
conditions during the overnight hours in the mountains, foothills,
and wind prone areas will add to this fire weather threat during
this long duration of dangerous fire weather conditions. A fire
weather watch is in effect Sunday through Tuesday for much of los
angeles and ventura counties, including coastal areas. If fire
ignition occurs, there will be the potential for very rapid spread
of wildfire with long range spotting and extreme fire behavior
that could lead to a threat to life and property.

Lox watches warnings advisories
Ca... High surf advisory in effect until noon pdt Sunday for zones
34-35. (see laxcfwlox).

Wind advisory in effect until 10 am pdt this morning for
zones 39-52. (see laxnpwlox).

Excessive heat watch in effect from Monday morning through
Tuesday evening for zones 39>41-44>46-88-547. (see laxnpwlox).

Beach hazards statement in effect through Sunday afternoon
for zones 40-41. (see laxcfwlox).

Wind advisory in effect until 2 pm pdt this afternoon for
zones 53-54. (see laxnpwlox).

Fire weather watch in effect from Sunday morning through
Tuesday afternoon for zones 240-241-244>246-547-548. (see laxrfwlox).

Red flag warning in effect until 10 am pdt Sunday for zone
252. (see laxrfwlox).

Red flag warning in effect until 6 pm pdt Tuesday for zones
253-254-288. (see laxrfwlox).

Pz... Small craft advisory for hazardous seas in effect until 3 pm
pdt this afternoon for zone 645. (see laxmwwlox).

Small craft advisory in effect until 3 pm pdt Monday for
zones 670-673. (see laxmwwlox).

Small craft advisory in effect until 9 am pdt Monday for zone
676. (see laxmwwlox).

Hazard potential outlook (mon-fri)
near record high temperatures and elevated fire weather
conditions are expected for Monday and Tuesday, especially across
valleys and coasts.

Public... Thompson
aviation... Kj
marine... Kj
beaches... Kj
fire... Gomberg rat
synopsis... Thompson
weather.Gov losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PXAC1 7 mi51 min NW 1.9 G 2.9
BAXC1 8 mi45 min N 2.9 G 4.1
OHBC1 - 9410660 - Los Angeles, CA 9 mi45 min 67°F1016.9 hPa (+1.3)
PFDC1 9 mi45 min NW 2.9 G 4.1
PSXC1 9 mi45 min N 1 G 1.9
AGXC1 10 mi45 min NNW 4.1 G 4.1 63°F 1016.7 hPa
PFXC1 10 mi45 min N 1.9 G 1.9 64°F
PRJC1 12 mi45 min NE 4.1 G 6
46256 13 mi53 min 66°F4 ft
46221 - Santa Monica Bay, CA (028) 14 mi45 min 64°F4 ft
ICAC1 - 9410840 - Santa Monica Pier 14 mi45 min NE 5.1 G 6 63°F 62°F1017.1 hPa (+1.3)
46222 - San Pedro, CA (092) 14 mi45 min 66°F5 ft
46253 20 mi45 min 68°F4 ft
46262 34 mi45 min 68°F5 ft
46025 - Santa Monica Basin - 33NM West Southwest of Santa Monica, CA 36 mi35 min NNW 9.7 G 12 67°F1016.5 hPa

Wind History for Los Angeles Berth 161,
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Torrance, Zamperini Field Airport, CA3 mi2 hrsN 010.00 miMostly Cloudy55°F50°F82%1016.3 hPa
Hawthorne, Hawthorne Municipal Airport, CA8 mi52 minN 010.00 miFair62°F46°F58%1016.7 hPa
Los Angeles, Los Angeles International Airport, CA8 mi52 minVar 410.00 miA Few Clouds63°F43°F48%1016.6 hPa
Long Beach, Long Beach Airport, CA12 mi52 minN 010.00 miA Few Clouds62°F55°F78%1016.4 hPa
Los Angeles / USC Campus Downtown, CA15 mi2 hrsN 010.00 miMostly Cloudy61°F45°F56%1015.9 hPa
Santa Monica, Santa Monica Municipal Airport, CA15 mi54 minNNE 310.00 miA Few Clouds60°F36°F41%1016.7 hPa
Los Alamitos Army Airfield, CA18 mi1.8 hrsNNE 310.00 miFair56°F52°F88%1016.5 hPa
Fullerton, Fullerton Municipal Airport, CA21 mi52 minE 310.00 miFair59°F55°F87%1016.4 hPa

Wind History from TOA (wind in knots)
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Last 24hrW14W19
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W20--SW9
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--------------------CalmCalm
1 day agoCalmCalmCalmCalm--NW7S9W9NW9NW9NW3Calm--------------------W13W14
2 days agoCalm444NW6NW12W13NW9NW10W7W10W6--------------------CalmCalm

Tide / Current Tables for King Harbor, Santa Monica Bay, California
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King Harbor
Click for Map
Sat -- 04:17 AM PDT     1.57 feet Low Tide
Sat -- 07:03 AM PDT     Sunrise
Sat -- 08:42 AM PDT     Moonrise
Sat -- 10:29 AM PDT     5.56 feet High Tide
Sat -- 05:15 PM PDT     0.21 feet Low Tide
Sat -- 06:12 PM PDT     Sunset
Sat -- 07:48 PM PDT     Moonset
Sat -- 11:30 PM PDT     4.09 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.13.42.61.91.61.72.23.14.155.55.54.93.92.71.50.60.20.411.92.83.64

Tide / Current Tables for El Segundo, Santa Monica Bay, California
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El Segundo
Click for Map
Sat -- 04:23 AM PDT     1.50 feet Low Tide
Sat -- 07:04 AM PDT     Sunrise
Sat -- 08:42 AM PDT     Moonrise
Sat -- 10:34 AM PDT     5.56 feet High Tide
Sat -- 05:21 PM PDT     0.20 feet Low Tide
Sat -- 06:12 PM PDT     Sunset
Sat -- 07:48 PM PDT     Moonset
Sat -- 11:35 PM PDT     4.09 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.13.52.71.91.51.62.1344.95.55.5542.81.60.70.20.30.91.82.73.54

Weather Map and Satellite Images
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Weather Map
wmap_P
IR Satellite Image from GEOS
west_satellite

GOES Local Image of Southwest    EDIT
Geos

Wind Forecast for Los Angeles/Oxnard, CA (11,2,3,4)
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Ground Weather Radar Station Santa Ana Mtns, CA
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Disclaimer:
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.