Marine Weather and Tides
7/21/2018 Trying to make page Mobile Friendly
|Sunrise 5:59AM||Sunset 8:06PM||Saturday July 21, 2018 12:26 PM PDT (19:26 UTC)||Moonrise 3:08PM||Moonset 1:30AM||Illumination 64%|
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|PZZ650 East Santa Barbara Channel From Pt. Conception To Pt. Mugu Ca Including Santa Cruz Island- 852 Am Pdt Sat Jul 21 2018 |
Today..W winds around 10 kt, becoming sw 10 to 15 kt in the afternoon. Wind waves 2 ft or less. W swell 2 ft at 9 seconds. Patchy fog in the morning.
Tonight..W winds 10 to 15 kt, becoming 5 to 10 kt after midnight. Wind waves 2 ft or less. W swell 2 to 3 ft at 11 seconds. Patchy fog after midnight.
Sun..W winds 5 to 10 kt, becoming W 10 to 20 kt in the afternoon. Wind waves 2 to 3 ft. W swell 2 to 3 ft at 9 seconds. Patchy fog in the morning.
Sun night..W winds 10 to 20 kt with local gusts to 25 kt, strongest western portion, becoming 5 to 10 kt. Wind waves 2 to 4 ft, becoming 1 ft or less late. W swell 2 to 4 ft at 6 seconds.
Mon..W winds 10 to 15 kt, becoming 15 to 20 kt in the afternoon. Wind waves 2 to 3 kt. W swell 3 to 5 ft at 6 seconds.
Mon night..Western portion, W to nw winds 15 to 25 kt becoming 10 to 15 kt after midnight. Eastern portion, W winds 10 to 20 kt becoming 5 to 10 kt after midnight. Combined seas 5 to 7 ft dominant period 6 seconds.
Tue..W to nw winds 10 to 15 kt early. Becoming 15 to 25 kt. Combined seas 4 to 6 ft.
Wed..W to nw winds 15 to 25 kt. Combined seas 4 to 6 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 Port Hueneme city, CAHourly EDIT Help
Area Discussion for - Los Angeles/Oxnard, CA  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus66 klox 211819 aaa|
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
Short term (tdy-mon) 21 933 am.
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
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
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
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).
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.
marine... Db sirard
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|
|46217 - Anacapa Passage, CA (111)||18 mi||36 min||68°F||2 ft|
|46025 - Santa Monica Basin - 33NM West Southwest of Santa Monica, CA||24 mi||37 min||W 9.7 G 14||67°F||72°F||2 ft||1016.3 hPa||66°F|
|46262||28 mi||27 min||72°F||3 ft|
|46221 - Santa Monica Bay, CA (028)||30 mi||27 min||73°F||2 ft|
|ICAC1 - 9410840 - Santa Monica Pier||32 mi||45 min||WSW 8 G 9.9||67°F||72°F||1016.5 hPa|
|46251||34 mi||27 min||68°F||3 ft|
|NTBC1 - Santa Barbara, CA - 9411340||38 mi||51 min||SW 9.9 G 11||64°F||1017.2 hPa|
|46053 - E. SANTA BARBARA - 12NM Southwest of Santa Barbara, CA||41 mi||37 min||W 5.8 G 7.8||64°F||69°F||2 ft||1017.4 hPa||63°F|
Wind History for Santa Monica, CA(wind in knots) EDIT (on/off)  Help
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports
|Point Mugu, Naval Air Warfare Center, CA||2 mi||89 min||WSW 8||10.00 mi||Mostly Cloudy||72°F||62°F||71%||1016.7 hPa|
|Camarillo, Camarillo Airport, CA||8 mi||32 min||WSW 7||10.00 mi||Fair||76°F||61°F||60%||1016.5 hPa|
|Oxnard, Oxnard Airport, CA||9 mi||36 min||W 11||10.00 mi||Mostly Cloudy||72°F||62°F||71%||1015.9 hPa|
Wind History from NTD (wind in knots)
|1 day ago||SW||SW||SW||SW||S||S||S||S||S||S||Calm||Calm||S||S||S||SW||SW||SW||Calm||Calm||SW||SW||SW||S|
|2 days ago||W||SW||SW||W||W||W||NW||NW||N||Calm||S||S||SW||SW||W||NW||Calm||NE||Calm||S||S||S||SW |
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Wind Forecast for Los Angeles/Oxnard, CA (15,3,4,5)(on/off)  Help
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