Saturday, July21, 2018 L-36.com


Marine Weather and Tides
Santa Monica, CA

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7/21/2018 Trying to make page Mobile Friendly

Sunrise 5:57AMSunset 8:03PM Saturday July 21, 2018 12:31 PM PDT (19:31 UTC) Moonrise 3:05PMMoonset 1:28AM Illumination 64% Phase: Waxing Gibbous; Moon at 9 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- 852 Am Pdt Sat Jul 21 2018
Today..Winds variable 10 kt or less, becoming W 10 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 2 ft at 9 seconds and sw 2 ft at 17 seconds. Patchy fog in the morning.
Tonight..W winds 10 to 15 kt, becoming 5 to 10 kt late. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft at 9 seconds and sw 2 ft at 18 seconds. Patchy fog after midnight.
Sun..W winds 5 to 10 kt, becoming 10 to 20 kt in the afternoon. Wind waves 1 to 3 ft. Mixed swell W 2 to 3 ft at 7 seconds and sw 2 ft at 16 seconds. Patchy fog in the morning.
Sun night..W winds 10 to 20 kt, becoming 5 to 10 kt late. Wind waves 1 to 3 ft. Mixed swell W 2 to 4 ft at 6 seconds and S 2 ft at 16 seconds. Patchy fog after midnight.
Mon..W winds 5 to 10 kt, becoming 10 to 15 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W swell 2 to 4 ft at 6 seconds and S 3 ft at 17 seconds. Patchy fog in the morning.
Mon night..W winds 10 to 15 kt, becoming 5 to 10 kt after midnight. Wind waves 2 ft or less. Mixed swell W 3 to 5 ft at 6 seconds and S 3 ft at 18 seconds. Patchy fog after midnight.
Tue..W winds 5 to 10 kt early, becoming 10 to 15 kt. Wind waves 2 ft or less. Mixed swell W 3 to 5 ft and S 4 ft. Patchy fog.
Wed..W winds 10 to 15 kt. Wind waves 2 ft. Mixed swell W 2 to 4 ft and S 3 ft.
PZZ600 852 Am Pdt Sat Jul 21 2018
Synopsis for the southern california coast and santa barbara channel including the channel islands national marine sanctuary and national park..At 15z...or 8 am pdt, a 1035 mb surface high was located about 1200 nm nw of point conception, and a 1005 mb thermal low was centered near needles. This pattern will change little through Sun.

7 Day Forecast for Marine Location Near Santa Monica, CA
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location: 34.01, -118.52     debug


Area Discussion for - Los Angeles/Oxnard, CA
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Fxus66 klox 211819 aaa
afdlox
area forecast discussion... Updated
national weather service los angeles oxnard ca
1119 am pdt Sat jul 21 2018
updated aviation discussion

Synopsis 21 941 am.

Hot temperatures are expected much of next week as high pressure
builds over the area. Night to morning low clouds and fog is
expected across coastal areas, helping temperatures to remain
slightly cooler.

Short term (tdy-mon) 21 933 am.

***update***
overall the forecast is in good shape. Tweaked high temperatures
for today, mainly cooled central coast and sba south coast a
couple of degrees due to more organized low clouds there is
morning. Also tweaked cloud coverage including adding partly
cloudy wording for eastern la county this afternoon with mid to
high level clouds associated with a mesoscale convective system
currently over the colorado river likely to push into the region.

There is a chance that overcast conditions prevail across eastern
la county this afternoon. Decent convective parameters again
across the eastern san gabriel mountains today but it seems
moisture will be lacking once again and therefore a thunderstorm
here is unlikely today.

The focus for today will continue to be on the upcoming prolonged
heat wave which continues to looking on track for much of next
week.

An update for the changes mentioned above will be made shortly.

***from previous discussion***
the marine layer depth is 1600 feet which is a little deeper than
expected ESP considering that there are 591 dm hgts overhead. The
deepening is most likely created by a weak upper low about 300
miles west of pt conception. The west to east onshore gradient is
about a mb stronger while the N to S gradient is nearly unchanged.

The deeper marine layer will allow not only near total stratus
coverage for the coasts but also some intrusion into the lower
vlys. MAX temps will be similar to ydy with perhaps a little
cooling in the coastal vlys.

The upper level high that currently sits over the texas panhandle
will move to the west on Sunday and hgts over SRN ca will rise
3 dm to 594 dm. The marine layer will smoosh a little and will not
make it into the vlys but there will still be fairly extensive
stratus coverage over the coasts. MAX temps will jump 4 to 6
degrees in the vly areas where there is stratus today but
otherwise there will be a couple of degrees of warming inland and
little change across the coasts.

On Sunday night the first of 3 or 4 evenings of hot and gusty
sundowner winds will develop. It is likely than a few locations in
southern sba county will see their daily highs set during the
evening. The winds will also keep overnight lows very warm with
some areas remaining in the 80s.

The well anticipated heat wave will start Monday. The upper high
will grow to 600 dm and will be centered over nm. Hgts over socal
will rise to 597 dm. More importantly there will be offshore flow
from the north and the onshore flow to the east will weaken. The
marine layer will shrink and the seabreeze will be delayed across
the coasts and mostly non existent for the vly.

Max temps will jump into the 80s for coastal zones and locally
into the 90s across southern sb county with the north winds.

Temperatures across the valleys and lower mountain locations will
rise into triple digit territory. Excessive heat warnings will go
into affect at 10 am for areas south of point conception.

Areas north of pt conception will remain under a watch as temps
there won't reach criteria until at least Tuesday and coastal
areas likely will only see advisory level temps at best.

The strongest sundowner of the next 7 days will occur Monday
evening and a wind advisory is likely. The winds will again bring
very warm overnight lows to many portions of the sba south coast
along with low humidities and high fire danger.

Long term (tue-fri) 21 314 am.

Nothing but hot for the extended period. Both the ec and the gfs
agree that the upper high will move over az on Tuesday and then
directly over SRN ca for the Wed to Friday period. Hgts will be
near 597 dm through the period. Offshore flow from the north will
continue and this will likely eliminate the marine layer from
areas south of pt conception. Sundowners will continue through
Wednesday.

While this heat event will not be as strong as the july 5-8 event
there will still be near record MAX daytime temps and perhaps even
more importantly there the low will also be near record levels
for warmth which means there will be a 96 hour period with little
to no relief.

Excessive heat warnings will continue across areas south of pt
conception and some if not all of slo and sba counties (where heat
watches are now in effect) will need heat warnings as well. The
central coast is the biggest question mark as the marine layer may
linger there through the period.

The gradients start trending onshore a little Thursday and moreso Friday
so some cooling is forecast for coast, but less so for inland areas.

Some consideration will need to be given towards extending heat
advisories warnings into Friday, especially la ventura inland areas.

Aviation 21 1818z.

At 1721z at klax, the marine inversion was around 1300 ft deep. The
top of the inversion was around 3500 feet with a temperature near 21
degrees celsius.

Moderate confidence overall in the 18z tafs due to the timing and
extent of low clouds at all coastal airfields during the period. Low
clouds with lifr ifr MVFR CIGS are expected to move into these
airfields generally from 03z at ksmx to 14z at klgb. The low clouds
are forecast to dissipate by late Sun morning, except should linger
until 18z Sun morning for ksba, koxr and kcma. The timing of the
onset and dissipation of the low clouds may be off + - one to three
hours. Otherwise, hi confidence inVFR conditions at the rest of the
airfields thru Sun morning.

Klax... Moderate confidence overall in the 18z taf. Low clouds with
MVFR CIGS are expected at the airfield from about 04z-20z sun.

Otherwise,VFR conditions can be expected thru Sun afternoon. The
timing of the onset and dissipation of the low clouds may be off + -
an hour or two.

Kbur... Hi confidence in the 18z TAF withVFR conditions expected
thru Sun morning.

Marine 21 853 am.

Good confidence in the forecast. For the southern two outer
waters zones (pzz673 pzz676), small craft advisory (sca) winds are
not forecast thru Sun morning. There is a 40%-50% chance of sca
winds Sun afternoon, then SCA conds are expected Sun night thru
wed. For the northern outer waters zone pzz670, SCA conds are not
expected thru Mon morning, then are likely Mon afternoon thru wed.

For the inner waters N of point conception, SCA conditions are
not expected thru Mon morning, then SCA conds are likely each
afternoon and evening Mon through wed.

For the inner waters S of pt conception, SCA winds are not expected
for pzz655 thru wed. In the sba channel, pzz650 there is a 30% chance
of SCA conds across western portions late Sun into Sun night, with
sca conds likely especially in western portions Mon evening thru
wed. Winds will be weaker in the late night thru morning hours.

Choppy short-period seas will persist across much of the waters
through the weekend.

A long-period south swell from the southern hemisphere is expected
to move into the waters early next week, with 3-4 ft swell possible.

Fire weather 21 935 am.

High pressure aloft centered over utah will maintain near normal
temperatures and humidities above 20 percent today, with
gusty southwest winds over interior areas. The high will strengthen
next week while locally breezy northerly flow forms, setting up a
heat wave that will be weaker than two weeks ago but several days
longer. This heat wave will occur from Sunday through at least Friday
and peak Monday through Thursday. High temperatures between 100 and
110 should be common in the valleys, lower mountains, and deserts during
the peak, with humidities likely falling to between 10 and 20 percent
by Tuesday. Several nights of gusty sundowner winds are expected across
southern santa barbara county from Sunday night through Wednesday night when
gusts between 30 and 45 mph will be common across western portions,
with isolated gusts as high as 50 mph near gaviota and refugio hills.

These persistent gusty sundowner winds will add to the fire weather
threat across southern santa barbara county, with conditions potentially
approaching critical levels by late Tuesday when humidities fall into
the teens and temperatures potentially climb to around 100 degrees.

Breezy conditions are also expected across the interstate 5 corridor
in the los angeles county mountains.

The long duration of hot and dry conditions coupled with dry fuels
will bring an increased risk of large vertical plume growth across
interior sections next week, especially in the foothills and
mountains. Widespread elevated fire weather conditions will occur
next week across southwest california due to the long duration heat
wave, with conditions potentially approaching critical levels across
southern santa county late Tuesday into Wednesday night due to
the hot and dry sundowner winds.

Lox watches warnings advisories
Ca... Excessive heat watch in effect from Tuesday morning through
Thursday evening for zones 34>38-51. (see laxnpwlox).

Excessive heat warning in effect from 10 am Monday to 8 pm
pdt Thursday for zones 39>41-44>46-52>54-59-88-547. (see laxnpwlox).

Pz... None.

Hazard potential outlook (mon-fri)
An extended heat wave is expected Monday through at least
Thursday of next week, especially for inland areas. Elevated fire
weather conditions due to the extended period of hot and dry
conditions, especially southern santa barbara county where gusty
sundowner winds will add to the threat. A long period southerly
swell will also bring elevated surf and strong rip current
potential early next week across south facing beaches coinciding
with the heat wave.

Public... Rorke
aviation... Sirard
marine... Db sirard
fire... Gomberg
synopsis... Delerme
weather.Gov losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ICAC1 - 9410840 - Santa Monica Pier 1 mi32 min WSW 8.9 G 11 67°F 72°F1016.5 hPa (+0.0)
46221 - Santa Monica Bay, CA (028) 12 mi32 min 73°F2 ft
PXAC1 22 mi38 min WNW 2.9 G 5.1
BAXC1 22 mi32 min WSW 4.1 G 5.1
PSXC1 23 mi32 min S 8 G 11
PFXC1 24 mi32 min SW 12 G 14 76°F
PFDC1 24 mi32 min SSW 9.9 G 13
OHBC1 - 9410660 - Los Angeles, CA 24 mi32 min 68°F1016 hPa (+0.0)
AGXC1 25 mi32 min WSW 12 G 15 70°F 1016 hPa (+0.0)
PRJC1 26 mi32 min WSW 15 G 17
46256 27 mi32 min 67°F2 ft
46222 - San Pedro, CA (092) 29 mi32 min 72°F2 ft
46262 33 mi32 min 72°F3 ft
46025 - Santa Monica Basin - 33NM West Southwest of Santa Monica, CA 34 mi22 min W 7.8 G 12 67°F 72°F1016.4 hPa66°F
46253 35 mi32 min 72°F2 ft

Wind History for Santa Monica, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Santa Monica, Santa Monica Municipal Airport, CA4 mi41 minWSW 810.00 miFair72°F62°F71%1016 hPa
Los Angeles, Los Angeles International Airport, CA8 mi39 minW 1210.00 miMostly Cloudy74°F62°F67%1016.1 hPa
Hawthorne, Hawthorne Municipal Airport, CA11 mi39 minW 8 G 1410.00 miFair74°F62°F67%1016 hPa
Los Angeles / USC Campus Downtown, CA13 mi45 minN 010.00 miFair80°F64°F58%1015.1 hPa
Van Nuys, Van Nuys Airport, CA14 mi41 minVar 310.00 miFair86°F59°F40%1014.3 hPa
Burbank - Bob Hope Airport, CA16 mi39 minS 510.00 miFair82°F62°F51%1014.1 hPa
Los Angeles, Whiteman Airport, CA18 mi2.6 hrsN 010.00 miClear75°F57°F54%1017.3 hPa
Torrance, Zamperini Field Airport, CA18 mi44 minW 1410.00 miA Few Clouds75°F62°F65%1015.9 hPa
Long Beach, Long Beach Airport, CA23 mi39 minN 010.00 miFair82°F62°F51%1015.4 hPa

Wind History from SMO (wind in knots)
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1 day agoSW8SW10W8SW12SW9SW6SW7SW5SW5SW6SW4CalmS3CalmSW4W3W5W3CalmCalmSW8SW8SW9SW8
2 days agoW5SW8SW10SW10SW6W7SW7SW6SW533CalmCalmCalmCalmSW3W3CalmCalmCalmSE4SW8SW7SW7

Tide / Current Tables for Santa Monica, California
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Santa Monica
Click for Map
Sat -- 12:19 AM PDT     1.12 feet Low Tide
Sat -- 01:27 AM PDT     Moonset
Sat -- 05:57 AM PDT     Sunrise
Sat -- 06:15 AM PDT     3.31 feet High Tide
Sat -- 11:18 AM PDT     1.96 feet Low Tide
Sat -- 03:04 PM PDT     Moonrise
Sat -- 06:04 PM PDT     5.39 feet High Tide
Sat -- 08:02 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.11.21.62.12.73.13.33.232.62.2222.433.84.65.25.45.24.63.72.71.7

Tide / Current Tables for El Segundo, Santa Monica Bay, California
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El Segundo
Click for Map
Sat -- 12:26 AM PDT     1.05 feet Low Tide
Sat -- 01:27 AM PDT     Moonset
Sat -- 05:57 AM PDT     Sunrise
Sat -- 06:23 AM PDT     3.22 feet High Tide
Sat -- 11:28 AM PDT     1.86 feet Low Tide
Sat -- 03:04 PM PDT     Moonrise
Sat -- 06:13 PM PDT     5.19 feet High Tide
Sat -- 08:02 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.11.11.41.92.533.23.22.92.52.11.91.92.22.83.54.34.95.25.14.53.72.71.8

Weather Map and Satellite Images
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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.
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Wind Forecast for Los Angeles/Oxnard, CA (15,3,4,5)
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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.