Thursday, August22, 2019 L-36.com


Marine Weather and Tides
Signal Hill, CA

Version 3.4
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7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
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Sunrise 6:18AMSunset 7:32PM Thursday August 22, 2019 10:32 AM PDT (17:32 UTC) Moonrise 11:44PMMoonset 12:41PM Illumination 54% Phase: Third Quarter Moon; Moon at 22 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- 855 Am Pdt Thu Aug 22 2019
Today..SE winds 5 to 15 kt becoming sw 10 kt in the afternoon. Wind waves 2 ft or less. W swell 2 to 3 ft at 7 seconds. Patchy dense fog with visibility 1 nm or less in the morning.
Tonight..S to sw winds 10 to 15 kt, becoming se 10 to 20 kt late. Wind waves 2 ft or less. Mixed swell W 3 ft at 8 seconds and sw 2 ft at 17 seconds.
Fri..SE winds 10 to 20 kt, becoming S 5 to 10 kt late in the afternoon. Wind waves 1 to 3 ft. Mixed swell W 2 to 3 ft at 9 seconds and sw 2 ft at 16 seconds.
Fri night..SE winds 5 to 10 kt, becoming 10 to 15 kt after midnight. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft at 9 seconds and sw 2 ft at 16 seconds.
Sat..SE winds 10 to 15 kt in the morning, becoming variable 10 kt or less. Wind waves 2 ft or less. Mixed swell W 2 ft at 9 seconds and S 2 ft at 15 seconds.
Sat night..Winds variable 10 kt or less. Wind waves 2 ft or less. Mixed swell W 2 ft at 9 seconds and S 3 ft at 13 seconds. Patchy fog after midnight.
Sun..Winds variable 10 kt or less early, becoming W 5 to 10 kt. Wind waves 2 ft or less. S swell 4 to 5 ft. Patchy fog.
Mon..W winds 5 to 10 kt. Wind waves 2 ft or less. S swell 3 to 4 ft. Patchy fog.
PZZ600 855 Am Pdt Thu Aug 22 2019
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 1022 mb surface high was centered 800 nm W of point conception while a 1000 mb thermal low was centered over southern nevada. The high will retreat to the west while the low expands into northern california into the weekend. Abnormally strong southeast winds will affect most nearshore coastal waters tonight through Friday morning.


7 Day Forecast for Marine Location Near Signal Hill, CA
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location: 33.76, -118.18     debug


Area Discussion for - Los Angeles/Oxnard, CA
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Fxus66 klox 221659
afdlox
area forecast discussion
national weather service los angeles oxnard ca
959 am pdt Thu aug 22 2019

Synopsis 22 853 am.

Temperatures will remain slightly below normal at the beginning of
the period with the passage of a weak upper level trough. Coastal
low clouds and fog will spread into coastal valleys tonight,
retreating to the coastal areas only this weekend. Building high
pressure next week will bump temperatures higher, returning to
normal and slightly above normal for next week.

Short term (tdy-sat) 22 957 am.

Gradients trending 1-3mb onshore today which should translate to a
few degrees of cooling in most areas and locally as much as 10-15
degrees where downsloping winds yesterday provided an additional
heating factor. Already seeing southeast winds increasing across
the coastal waters south of pt conception, a trend that will kick
in even stronger later tonight and push north along the central
coast Friday morning in what looks like a pretty impressive
southerly surge.

***from previous discussion***
synoptically, at the upper levels, a weak upper level trough will
remain over southern california with a strong upper high
developing over the eastern pac. By Friday, the upper level ridge
to the west will start to expand east and keep the upper level
trough well north across the pac NW through sat. At the lower
levels, onshore flow will increase today which will cause most
locations cool down 3-6 degrees from yesterday. There could be a
rogue 100 degree reading across the antelope valley this
afternoon, but most inland locations will remain in the upper 80s
and 90s. Coastal areas will be fairly mild. Yesterday, a few
central coast locations did heat up due to some downsloping
offshore winds in and around avila beach and port san luis.

Yesterday's high reached 94, but with an earlier seabreeze should
cool well down into the 70s or upper 60s.

Low clouds will be returning this evening across most coastal
areas. In fact a fairly strong catalina eddy is expected to
redevelop bringing some gusty SE winds across the socal bight and
adjacent coastal areas from l.A. To the sba south coast after
midnight. Low clouds should really deepen due to the strength of
the eddy and reach all coastal valley locations. Southerly winds
will continue most of the day on Friday. So even through h5
heights will be climbing slightly as the ridge builds in. However
strong southerly flow will keep high temps quite cool for coastal
areas and could keep low clouds hugging the beaches most of the
day. Expect additional 2-6 degrees of cooling for most areas
except up to 15 degrees of cooling across the san luis obispo
interior valleys due to the cooler southerly air mass. Paso robles
only expected to reach the mid 80s, but would not be surprised if
it only reached the lower 80s. One caveat to the southerly flow
will be some warming across the sba central coast near lompoc as
decent downsloping occurs across the santa ynez range. An opposite
effect to a sundowner. Highs in lompoc expected to reach the lower
80s.

By Saturday, an elongated upper level ridge from the eastern pac
to new mexico will dominate the weather pattern. Weaker onshore
flow is predicted and with building h5 heights and thickness
levels, high temps will be trending up anywhere from 2 to 10
degrees with highs reaching triple digits across the antelope
valley and back up to the mid to upper 90s across most valleys.

There will continue to be night through morning low clouds Friday
night into Saturday morning, with less areal coverage for valley
locations.

What is now tropical storm ivo located around 550 miles ssw of
cabo san lucas will start to shift to the north and move parallel
off the coast of central baja ca by Saturday. There will be no
affects from ivo through Saturday.

Long term (sun-wed) 22 325 am.

High pressure aloft will dominate the weather pattern through the
extended period (sun-wed). With onshore gradients expected to be
moderately strong, high temps overall will be a few degrees above
normal away from the coast with most valleys warming into the 90s
while the antelope valley should be around 100-103 degrees. Coastal
areas will remain mild with night through morning low clouds affecting
most coastal areas, and possibly the santa ynez valley.

As mentioned in the earlier discussion... Tropical storm ivo
(pronounced "eye-vo") will begin to track to the north and
maintain its tropical storm status but could become a weak
hurricane briefly Friday afternoon. As ivo continues to track
north parallel to baja cal, it will meet with cooler waters and
should weaken to a depression by early Monday morning. The strong
high pressure aloft to the NE over southern cal will keep the main
remnants from ivo well off the coast. In fact the latest gfs
model run keeps most of the mid to high level clouds off the coast
on Sun mon. Main impacts will be increasing southerly swells and
surf at south facing beaches. Read the "beach discussion" below
for more details.

Aviation 22 1248z.

At 12z, the marine layer was 1300 feet deep at klax. The top of
the inversion was around 3000 feet with a temp of 25c.

N of pt conception, there were areas of low clouds on the central
coast and patchy low clouds in the santa ynez and salinas valleys.

Conditions were generally lifr to vlifr. Skies will clear by mid
morning, except late morning near the coast. There is a slight
chance that clouds could linger at the beaches through the
afternoon. Low clouds are expected overspread the coastal plain
this evening, then push into the santa ynez valley before
midnight. Conds will be mostly lifr to vlifr.

S of pt conception, low clouds were widespread across coastal
sections of l.A. County and there were areas of low clouds in the
san gabriel valley. Patchy low clouds were also affecting coastal
sections of vtu county and southern sba county. Conds were mostly
ifr to lifr. Skies are expected to clear by mid to late morning.

Expect clouds to push into coastal areas this evening, then into
all valley areas overnight. Conds should be mostly ifr in the
valleys and MVFR on the coastal plain.

Klax... Moderate confidence in the 12z taf. There is a 20% chance
that CIGS will scatter out as early a 15z this morning. There is a
20% chance that CIGS will arrive as early as 01z this evening.

There is a good chance that east to southeast winds will reach 10
knots late tonight, and there is a 20% chance that this will occur
as early as 08z.

Kbur... Moderate to high confidence in the 12z taf. There is a
20% chance that CIGS will arrive as early as 04z this evening.

Marine 22 907 am.

High confidence in small craft advisory (sca) winds through
tonight over the outer waters from the central coast to san
nicolas island. 50 percent chance of SCA winds for the nearshore
central coast waters. Moderate confidence for relatively light
winds well below SCA Friday through at least the weekend.

Choppy or steep seas expected over all coastal waters through at
least tonight due to the winds mentioned above.

Moderate confidence for abnormally strong southeast winds over
most coastal waters later tonight into early Friday afternoon,
focused from point conception to orange county. 10 to 15 kt will
be common, but local gusts between 15 and 25 kt are likely
around the channel islands and through the san pedro channel.

There is a 30 percent chance of reaching SCA criteria.

An abnormally large south to southeast swell from tropical storm
ivo will impact the waters Sunday through Tuesday. There is a
potential for the swell to peak between 5 and 7 feet. A swell
from this direction would cause strong surges around and inside
the vulnerable harbors, especially avalon and san pedro long
beach. Large breaking waves near the coast are also likely, which
has a history of capsizing small drifting boats.

Beaches 22 912 am.

Tropical storm "ivo", currently about 500 miles southwest of cabo
san lucas, will generate a southeasterly swell reaching
california Sunday and persisting through Tuesday. The peak of the
swell should occur Sunday afternoon through Monday morning with a
period around 14 seconds. While the peak swell heights will most
likely fall between 3 and 5 feet, there is a 20 percent chance
for a range of 5 and 7 feet.

Dangerous rip currents and large breaking waves on rock jetties
are certain. Surf heights should reach at least 4 to 6 feet over
south facing beaches, with a chance of peak surf reaching 6 to 8
feet especially for los angeles county, which would require a high
surf advisory.

There is a risk for impactful coastal flooding as well. The
highest tides will be late in the afternoon, and should reach a
modest 5.5 to 6.2 feet. If the peak swell ends up 3 to 5 feet,
flooding impacts would be minor and mainly in the form of beach
erosion. If the swell height ends up closer to 7 feet, more
impactful flooding would be expected for the vulnerable areas
like pebbly beach in avalon and the long beach peninsula if
unprotected.

Lox watches warnings advisories
Ca... None.

Pz... Small craft advisory in effect from 3 pm this afternoon to 9
pm pdt this evening for zone 645. (see laxmwwlox).

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

Small craft advisory in effect until 9 pm pdt this evening
for zone 676. (see laxmwwlox).

Hazard potential outlook (sat-wed)
Elevated surf and strong rip currents are possible at area beaches
early next week.

Public... Mw kaplan
aviation... Db
marine... Kittell
beaches... Kittell db
synopsis... Fisher
weather.Gov losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PFXC1 2 mi45 min SE 9.9 G 12
PRJC1 2 mi45 min SE 9.9 G 12
PSXC1 2 mi45 min SE 8 G 9.9
BAXC1 3 mi93 min E 11 G 13
46256 4 mi33 min 66°F3 ft
PFDC1 4 mi45 min E 8 G 8.9
AGXC1 5 mi45 min ESE 8 G 8.9
PXAC1 5 mi45 min SE 7 G 8
OHBC1 - 9410660 - Los Angeles, CA 6 mi45 min 64°F1009.8 hPa
46222 - San Pedro, CA (092) 12 mi40 min 70°F3 ft
46253 13 mi33 min 67°F3 ft
ICAC1 - 9410840 - Santa Monica Pier 24 mi51 min S 7 G 8.9 68°F 69°F1009.4 hPa
46221 - Santa Monica Bay, CA (028) 25 mi37 min 70°F3 ft
46025 - Santa Monica Basin - 33NM West Southwest of Santa Monica, CA 46 mi33 min SE 16 G 18 68°F 1009 hPa (+0.8)67°F

Wind History for Los Angeles Pier J, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Long Beach, Long Beach Airport, CA5 mi40 minS 910.00 miMostly Cloudy72°F60°F66%1009.3 hPa
Los Alamitos Army Airfield, CA7 mi95 minN 06.00 miMostly Cloudy with Haze69°F57°F68%1009.4 hPa
Torrance, Zamperini Field Airport, CA8 mi46 minE 910.00 miMostly Cloudy72°F62°F73%1009.1 hPa
Fullerton, Fullerton Municipal Airport, CA13 mi40 minS 510.00 miFair73°F60°F64%1008.9 hPa
Hawthorne, Hawthorne Municipal Airport, CA14 mi40 minSSE 510.00 miFair72°F61°F68%1009.1 hPa
John Wayne-Orange County Airport, CA17 mi40 minN 010.00 miA Few Clouds74°F61°F64%1009 hPa
Los Angeles, Los Angeles International Airport, CA17 mi40 minE 69.00 miA Few Clouds75°F62°F64%1008.8 hPa
Los Angeles / USC Campus Downtown, CA19 mi41 minVar 37.00 miFair76°F62°F62%1008.4 hPa
El Monte, CA24 mi46 minWSW 410.00 miFair73°F60°F65%1009.1 hPa
Santa Monica, Santa Monica Municipal Airport, CA24 mi42 minSE 48.00 miFair72°F64°F76%1009 hPa

Link to 5 minute data for KLGB

Wind History from LGB (wind in knots)
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Last 24hrS5S6--S8S8S7NW11NW9W9--NW5NW3--CalmS4--SE6S3CalmCalmSE8--S8S9
1 day agoS6S6S7----NW10W9NW12NW10----------Calm--CalmCalmCalm----CalmCalmCalm
2 days ago--S9--SW10SW6NW8W10NW11NW13----------CalmSE3CalmCalmCalmCalmE3E4Calm3

Tide / Current Tables for Long Beach, Outer Harbor, Pier A, California
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Long Beach
Click for Map
Thu -- 01:59 AM PDT     3.27 feet High Tide
Thu -- 06:19 AM PDT     Sunrise
Thu -- 07:39 AM PDT     2.06 feet Low Tide
Thu -- 12:41 PM PDT     Moonset
Thu -- 02:34 PM PDT     4.44 feet High Tide
Thu -- 07:31 PM PDT     Sunset
Thu -- 10:05 PM PDT     1.83 feet Low Tide
Thu -- 11:43 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.93.23.33.22.92.62.32.12.12.32.63.23.74.14.44.44.23.83.32.72.31.91.81.9

Tide / Current Tables for Cabrillo Beach, California
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Cabrillo Beach
Click for Map
Thu -- 01:57 AM PDT     3.38 feet High Tide
Thu -- 06:19 AM PDT     Sunrise
Thu -- 07:32 AM PDT     2.15 feet Low Tide
Thu -- 12:41 PM PDT     Moonset
Thu -- 02:32 PM PDT     4.58 feet High Tide
Thu -- 07:31 PM PDT     Sunset
Thu -- 09:58 PM PDT     1.91 feet Low Tide
Thu -- 11:44 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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33.33.43.332.72.42.22.22.42.83.33.84.34.54.64.33.93.32.82.321.92

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 (13,3,4,5)
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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.