Tuesday, October17, 2017 L-36.com


Marine Weather and Tides
Lompoc, 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 7:08AMSunset 6:24PM Tuesday October 17, 2017 1:28 PM PDT (20:28 UTC) Moonrise 4:01AMMoonset 4:38PM Illumination 7% Phase: Waning Crescent; Moon at 27 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
    EDIT      (on/off)   Help
PZZ673 Waters From Pt. Sal To Santa Cruz Island Ca And Westward 60 Nm Including San Miguel And Santa Rosa Islands- 817 Am Pdt Tue Oct 17 2017
.small craft advisory in effect through late tonight...
Today..NW winds 10 to 20 kt with gusts to 25 kt. Combined seas 5 to 6 ft dominant period 13 seconds. Chance of Thunderstorms in the morning, then isolated Thunderstorms.
Tonight..NW winds 15 to 25 kt with local gusts to 30 kt, becoming 10 to 20 kt by morning. Combined seas 6 to 8 ft dominant period 13 seconds. Isolated Thunderstorms in the evening.
Wed..NW winds 10 to 20 kt, becoming 15 to 25 kt in the afternoon. Combined seas 6 to 7 ft dominant period 13 seconds.
Wed night..NW winds 15 to 25 kt with local gusts to 30 kt. Combined seas 6 to 7 ft dominant period 12 seconds.
Thu..NW winds 15 to 25 kt, becoming 20 to 30 kt in the afternoon. Combined seas 6 to 8 ft dominant period 11 seconds.
Thu night..NW winds 20 to 30 kt, becoming 15 to 25 kt after midnight. Combined seas 7 to 9 ft dominant period 15 seconds, building to 9 to 12 ft dominant period 19 seconds late. Patchy fog after midnight.
Fri..NW winds 15 to 25 kt with gusts to 30 kt. Combined seas 12 to 15 ft. Patchy fog.
Sat..NW winds 20 to 30 kt with local gusts to 40 kt. Combined seas 12 to 15 ft.
PZZ600 817 Am Pdt Tue Oct 17 2017
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 1024 mb high was located 900 nm west of san francisco, and a thermal trough extended from nw mexico into S california. An upper level low moving over the area will bring a slight chance of Thunderstorms to portions of the coastal waters through this evening.

7 Day Forecast for Marine Location Near Lompoc, CA
   Hourly   EDIT   Help
location: 34.38, -120.53     debug


Area Discussion for - Los Angeles/Oxnard, CA
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus66 klox 171824
afdlox
area forecast discussion... Updated
national weather service los angeles oxnard ca
1124 am pdt Tue oct 17 2017

Updated aviation discussion...

Synopsis
Light offshore flow will bring above normal temperatures through
today. Patchy fog and low clouds return to the coast Thursday and
Friday as temperatures cool to near normal late in the week.

Temperatures increase again this weekend and into the following
week as another offshore wind event develops over the region.

Short term (tdy-thu)
lax-dag gradient continues to trend about 1mb onshore this
morning so we should see a couple degrees of cooling today for
coastal valleys, but still well above normal. The main thing we're
looking at today is the moisture and vort MAX a couple hundred
miles to the west. Models had a pretty good analysis of it this
morning and both the NAM and GFS show this feature starting to
curl towards the southeast and into the so cal bight area early
this evening and through ventura and la counties overnight. And
models are no longer showing much CAPE across slo county or across
the coastal waters north of pt conception this afternoon as they
once did, yet we're seeing lightning strikes about 60-80 miles
west of the outer waters boundary this morning. So this is a
tough forecast. For now will hold onto some slight chances of
showers storms mainly sb slo counties and adjacent waters this
afternoon and evening and will re-evaluate this afternoon for
possible overnight convection south of pt conception.

***from previous discussion***
the little system will knock the ridge down for Wednesday and
bring wnw flow to the area. There will be some mid and high level
clouds embedded in the flow so skies will be partly cloudy. There
will be decent onshore trends and the offshore flow will be very
weak and will likely trend to neutral during the day. Hgts also
fall about 5 dm so all in all look for a good cooling trend of 4
to 8 degrees everywhere.

A little eddy spins up Wednesday night and the W E gradient will
turn onshore this should be enough to bring some low clouds to the
coastal areas expect for the sba south coast where there will be
some light north north winds.

A weak trof will approach the west coast. It will keep the partly
cloudy skies going. At one point it looked like this system could
bring rain to the area but now the energy moisture will keep to
the north of slo county. Hgts fall to 578 dm and there will be a
moderate 5mb push to the east at the sfc... Both of which will
combine to lower MAX temps 3 to 6 degrees. Most areas will be
right at seasonal normals.

Long term (fri-mon)
the trough that at one time looked like it would possibly bring us
some rain Friday is now weaker and farther north on the models and
at least for now isn't posing a threat for precipitation in our
area. So rain chances have been dropped below 15. Even a lot of
the moisture that models had been entraining into the cold front
is gone so we're looking at partly cloudy skies at worst. Will
probably see a decent low cloud layer developing Friday morning as
the trough gets closer and possibly limited slow clearing during
the day. Temps will dip below normal for one day before ridging
quickly returns for the weekend and temps climb. Expecting a peak
in the northwest flow Friday night into Saturday with some
impressive (-5 to -7mb) sba-smx and sba lax-bfl gradients on the
gfs. If this holds we can expect to at least see advisory level
sundowners and i5 corridor winds and possibly touching warning
level.

The warming trend will start quickly Saturday then really ramp up
Sunday Monday as offshore gradients return. We're not seeing quite
the good upper level support we saw a couple days ago as now both
the GFS and ECMWF show a more progressive trough pattern rather
than an upper low dropping south through the great basin. And in
fact both now show 591-594dm heights Sunday-Wednesday with
moderate offshore gradients and 950mb temps in the low 30s
celcius. That would likely yield highs in the 90s for coastal
areas, lower 100s for downtown la and a few degrees warmer for the
valleys. Current forecast is somewhat conservative given the
pattern but quite a bit above MOS guidance so confidence not
particularly high just yet.

Aviation 17 1800z.

At 1800z, there was a surface based inversion at klax. The top of
the inversion was located at 1500 feet with a temperature of 28c.

Mid to high level clouds across the region today with a slight
chance of tstms this afternoon and evening across slo and sba
counties and NW vtu county. Any TSTM could produce wind gusts
over 40 kt. Except for possible brief MVFR conds in any tstms,
mainlyVFR conditions are expected thru the period... Except for
a small chance of marine layer CIGS over coastal la county late
tonight Wed morning.

Klax... Moderate to high confidence in the 18z TAF withVFR
conditions expected thru the period... Except for a 20% chance of
MVFR conds after 12z wed.

Kbur... High confidence in the 18z TAF withVFR conditions
expected thru the period... Except for a 10% chance of MVFR ifr
conds after 12z wed.

Marine 17 900 am.

High confidence in SCA level NW winds across the outer waters
increasing through this morning to SCA levels, and continuing
through at least late tonight. SCA winds are likely over the
nearshore waters north of point sal, and the western sba channel
later this afternoon. There is a 30% chance winds will rise to sca
levels over western portions of pzz655 later today as well. Seas
are expected to be choppy throughout the waters. Winds should
drop below SCA levels by dawn Wednesday in most areas - but will
likely increase again by late morning Wednesday and remain
moderate to locally strong through the period. An upper
disturbance will bring a slight chance of tstms to portions of the
waters from western pzz650 and northwestward.

There will be a chance of gale force winds across the outer coastal
waters late Thursday night through Saturday, with SCA conditions
likely nearshore.

A large storm off western canada will generate 40 foot seas in
that area. This will produce a large long-period NW swell which
will reach our waters by Friday. Seas up to 15 feet are likely,
with 20 foot seas possible across the outer and northern waters.

There will likely be dangerous breaking waves on the central coast
through Saturday or Sunday, with dangerous conditions in and near
harbors.

Fire weather 17 945 am.

Elevated fire danger will continue across much of southwest
california through this evening as weak offshore flow continues
to bring very warm and dry conditions... With widespread single digit
humidities today away from the immediate coast. Some lightning
strikes have been detected well off the coast of point conception
this morning associated with a weak upper level disturbance and
increasing subtropical mid level moisture. As this system passes
over our area this afternoon and tonight, there is a slight chance
of thunderstorms across san luis obispo, santa barbara, and
western ventura counties. Due to the very dry lower levels of the
atmosphere, any storms that develop will be capable of producing
isolated dry lightning strikes and gusty erratic downdraft winds.

Gusty sundowner winds are expected to impact southern santa barbara
county much of this week, during the late afternoon and nighttime
hours. Later this afternoon and evening, wind gusts between 35 and
45 mph with humidities falling into the teens will bring elevated to
brief critical fire weather conditions across the santa ynez range and
santa barbara south coast. In the wake of a passing upper level
trough, there is the potential for stronger sundowner winds Friday
night into Saturday evening.

From Sunday through next Tuesday, there is the potential for a prolonged
duration of gusty santa ana winds with hot and very dry conditions. While
there is still some uncertainty with the strength of this upcoming
santa ana event (which will depend on the upper level wind support),
there will be the potential for at least moderate santa ana winds,
triple digit heat, and humidities falling into the single digits and
lower teens which could bring a return of critical fire weather
conditions to portions of southwest california.

Lox watches warnings advisories
Ca... Beach hazards statement in effect from Friday morning through
Friday evening for zones 34-35. (see laxcfwlox).

Wind advisory in effect from 3 pm this afternoon to 10 pm pdt
this evening for zones 39-52. (see laxnpwlox).

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

Pz... Small craft advisory in effect from 3 pm this afternoon to 3
am pdt Wednesday for zones 645-650. (see laxmwwlox).

Small craft advisory in effect until 6 am pdt Wednesday for
zones 670-673-676. (see laxmwwlox).

Hazard potential outlook (thu-mon)
hot temperatures and elevated fire weather conditions are
expected over the weekend into early next week as another santa
ana wind event develops. Large surf is possible at central coast
beaches between Friday and Sunday. Strong rip currents are
possible.

Public... Rorke mw
aviation... Smith
marine... Smith
fire... Gomberg hall
synopsis... Sweet
weather.Gov losangeles


Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46054 - SANTA BARBARA W 38 NM West of Santa Barbara, CA 8 mi29 min WNW 21 G 25 64°F 65°F1017 hPa (+0.0)60°F
HRVC1 10 mi41 min 63°F 1018.7 hPa
46218 - Harvest, CA (071) 14 mi59 min 64°F5 ft
PTGC1 - Point Arguello, CA 15 mi29 min N 22 G 24 62°F 1018.6 hPa (+0.4)
46053 - E. SANTA BARBARA - 12NM Southwest of Santa Barbara, CA 37 mi29 min W 12 G 18 68°F 67°F1016.2 hPa (-0.7)61°F
NTBC1 - Santa Barbara, CA - 9411340 44 mi53 min SW 8.9 G 11 69°F 1015.7 hPa
46011 - SANTA MARIA - 21 NM Northwest of Point Arguello, CA 47 mi39 min WNW 14 G 18 62°F 61°F5 ft1018.6 hPa (+0.0)

Wind History for Santa Barbara, CA
(wind in knots)    EDIT      (on/off)   Help
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
Last
24hr
SW9
G12
SW9
G12
W7
G13
W4
G10
SW4
G7
SW8
E2
E3
NE5
NE2
NE2
NE3
N3
N4
NE2
--
NW2
NE2
NE4
N5
N2
G6
SW7
NE4
SW10
1 day
ago
SW7
SW7
SW4
SW6
G9
SW5
W1
N2
N3
--
N4
N1
--
NW2
SW1
--
N3
NW3
W1
--
SW3
SW6
SW9
SW8
SW5
G9
2 days
ago
SW12
SW11
G14
SW9
G12
SW5
G10
SW3
N1
W2
NE2
--
NW1
N2
N4
N1
N2
W2
N3
NW3
NW5
NW2
N4
SW3
SW7
SW7
SW6

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Lompoc, Lompoc Airport, CA20 mi33 minW 1910.00 miFair and Breezy71°F57°F63%1019.1 hPa

Wind History from LPC (wind in knots)
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
Last 24hrW10W11W14W9W6W3E4Calm--CalmE4E4NE4E5SE3CalmNE5NE3CalmCalmCalmW36W19
1 day agoW7W10W8W11W6CalmE4NE4E3E4E5E4E4E7E7E6E6E7E7E65E4W6W10
2 days ago--W9W10W10W5CalmCalmE3E4E5E6E6E5E6E7E8E5E6E6E5E4CalmW5W9

Tide / Current Tables for Oil Platform Harvest (Topex Project), California
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Oil Platform Harvest (Topex Project)
Click for Map
Tue -- 02:49 AM PDT     0.41 feet Low Tide
Tue -- 05:01 AM PDT     Moonrise
Tue -- 07:10 AM PDT     Sunrise
Tue -- 09:04 AM PDT     5.35 feet High Tide
Tue -- 03:16 PM PDT     0.70 feet Low Tide
Tue -- 05:39 PM PDT     Moonset
Tue -- 06:25 PM PDT     Sunset
Tue -- 09:16 PM PDT     4.95 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.31.30.60.40.81.72.94.155.35.14.33.22.11.20.70.81.52.53.64.54.94.84.2

Tide / Current Tables for Point Arguello, California
   EDIT      (on/off)   Help   One Week of Data
Point Arguello
Click for Map
Tue -- 02:47 AM PDT     0.30 feet Low Tide
Tue -- 05:01 AM PDT     Moonrise
Tue -- 07:10 AM PDT     Sunrise
Tue -- 09:13 AM PDT     5.13 feet High Tide
Tue -- 03:19 PM PDT     0.71 feet Low Tide
Tue -- 05:39 PM PDT     Moonset
Tue -- 06:25 PM PDT     Sunset
Tue -- 09:24 PM PDT     4.74 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.31.20.50.30.71.62.73.84.75.154.33.22.11.20.70.81.42.43.44.24.74.64.1

Weather Map and Satellite Images
       (on/off)   Help
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 (16,3,4,5)
      (on/off)   Help

Ground Weather Radar Station Vandenberg AFB, CA
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

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.