Wednesday, March29, 2017 L-36.com


Marine Weather and Tides
Vandenberg AFB, CA

Version 3.4
What's New / NOTES
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.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 6:49AMSunset 7:22PM Wednesday March 29, 2017 2:09 AM PDT (09:09 UTC) Moonrise 7:13AMMoonset 8:28PM Illumination 4% Phase: Waxing Crescent; Moon at 2 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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PZZ673 Waters From Pt. Sal To Santa Cruz Island Ca And Westward 60 Nm Including San Miguel And Santa Rosa Islands- 816 Pm Pdt Tue Mar 28 2017
.gale warning in effect until 3 am pdt Wednesday...
Tonight..NW winds 20 to 30 kt with gusts to 35 kt. Combined seas 12 to 15 ft dominant period 17 seconds.
Wed..Northwestern portion...nw winds 25 to 35 kt becoming N 20 to 25 kt in the afternoon. Elsewhere...n winds 15 to 20 kt. Combined seas 10 to 13 ft dominant period 16 seconds.
Wed night..NW winds 20 to 25 kt with local gusts to 35 kt. Combined seas 10 to 12 ft dominant period 16 seconds.
Thu..NW winds 20 to 30 kt with gusts to 40 kt. Combined seas 11 to 12 ft dominant period 15 seconds.
Thu night..NW winds 25 to 30 kt with gusts to 40 kt. Combined seas 13 to 14 ft dominant period 12 seconds.
Fri..NW winds 20 to 30 kt with gusts to 40 kt. Combined seas 11 to 14 ft dominant period 12 seconds.
Fri night..NW winds 25 to 30 kt with gusts to 40 kt...becoming 20 to 25 kt with gusts to 35 kt after midnight. Combined seas 13 to 15 ft dominant period 12 seconds...subsiding to 11 to 13 ft dominant period 11 seconds after midnight.
Sat..NW winds 15 to 25 kt with gusts to 30 kt. Combined seas 9 to 12 ft.
Sun..NW winds 15 to 25 kt with gusts to 35 kt. Combined seas 11 to 14 ft.
PZZ600 816 Pm Pdt Tue Mar 28 2017
Synopsis for the southern california coast and santa barbara channel including the channel islands national marine sanctuary and national park..At 03z...or 8 pm pst...a 1030 mb high pressure center was located 550 nm northwest of point conception and a 1000 mb low pressure center was located over new mexico. Winds will be elevated during much of this coming week. Gales will possibly return again Thursday and Friday. Short period seas will dominate the waters due to persistent northwest winds.

7 Day Forecast for Marine Location Near Vandenberg AFB, CA
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location: 34.55, -121.24     debug


Area Discussion for - Los Angeles/Oxnard, CA
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Fxus66 klox 290354
afdlox
area forecast discussion... Updated
national weather service los angeles/oxnard ca
854 pm pdt Tue mar 28 2017

Synopsis
High pressure and weakening offshore flow will bring a warming
trend to the area through Wednesday. A trough of low pressure
will bring cooler conditions by Friday with another round of
strong and gusty northerly winds. Warmer conditions will likely
return this weekend as high pressure and weak offshore flow
persists.

Short term (tue-fri)
high pressure aloft over the west coast will continue to build
over the region into Wednesday. Offshore flow at the surface will
continue across the area. A warming trend will persist into
Wednesday. A tightening northerly surface pressure gradients is
bringing some gusty winds to the interstate 5 corridor and across
southern santa barbara county. Klax-kbfl and ksba-kbfl surface
gradients are hovering around -6 mb this evening. A wind advisory
continues for southern santa barbara county tonight but was
expanded to the los angeles and ventura county mountains tonight
through Wednesday.

The northerly gradient will turn northeasterly into Wednesday
morning, continuing gusty north to northeast winds across the los
angeles and ventura county mountains, and pushing some gusty santa
ana winds into the ventura, san fernando, and santa clarita
valleys, as well as the santa monica mountains. If model solutions
and gradient trends mesh, the klax-kdag surface pressure gradient
could exceed -5 mb by late tonight and early Wednesday morning. A
wind advisory has been issued as winds will increase over the
next several hours to near advisory strength. 850 mb winds
increase to around 40 knots across los angeles county and 950 mb
winds to around 25-35 knots along the los angeles-ventura county
border.

Temperatures will likely be warmed a tad for Wednesday in the
latest update to the package.

*** from previous discussion ***
on Thursday a trough will move into NRN california then move
southeast into southern nevada Thursday evening. This will result
in a rapid shift from offshore to onshore (an almost 7 mb 24 hour
trend from Wed from lax-dag), and several degrees of cooling,
especially for coast/valleys.

Another round of very gusty north winds expected behind the
trough Thu evening into Friday morning with speeds possibly
approaching the levels experienced last night.

Then gradients turn offshore again Friday, though air mass will be
quite a bit cooler so highs should be a few degrees cooler than
thu despite the offshore trends.

Long term (sat-tue)
a second day of offshore gradients Saturday will be accompanied
by a much warmer air mass as the upper low exits to the east and
the ridge builds. Highs not expected to be quite as warm Saturday
as tomorrow but still at least 10-15 degrees above normal. There
will be some northeast breezes but likely below advisory levels.

Gradients then shift to onshore Sunday that should lead to some
cooling but still at least a few degrees above normal in most
areas.

For Monday and Tuesday the GFS has shifted towards the much
weaker and progressive trough pattern that the ECMWF has been
advertising. It's been bouncing around quite a bit though so
confidence is pretty low for early next week, but if these trends
hold then it would certainly be a warmer and less windy forecast
than previously expected with no chance of rain. Bumped up highs
a few degrees but didn't want to adjust too much in case the
solutions reverts back to a cooler/windier one.

Aviation 29/0045z.

At 00z, there was no marine layer at klax.

High confidence in the current forecast.VFR conditions are
expected throughout the period, except for a chance of lifr
conditions at kprb between 13z and 17z. Periods of moderate low-
level wind shear and turbulence are possible through 16z.

Klax...VFR conditions are expected throughout the period. There is
a chance of northerly cross winds between 10 and 20 knots between
02z and 08z. Any east winds developing after 08z should remain
less than 7 knots.

Kbur...VFR conditions are expected throughout the period. Periods
of moderate low-level wind shear and turbulence are possible
between 07z and 11z.

Marine 28/800 pm.

Across the outer waters... Another gale warning continues as model
solutions project 35 kt gusts through much of tonight. Small
craft advisory winds will resume Wednesday and continue into
Wednesday night. By late Thursday, wind speeds in the outer waters
may again increase to gale warning criteria.

Across the inner waters... A SCA for hazardous seas is in effect
n of point conception through Wednesday morning. Gale level winds
may affect the inner waters on Thursday and Friday.

Lox watches/warnings/advisories
Ca... High surf advisory in effect until 2 pm pdt Wednesday for
zones 34-35. (see laxcfwlox).

Wind advisory in effect until 3 am pdt Wednesday for zones
39-52. (see laxnpwlox).

Beach hazards statement in effect through Wednesday afternoon
for zones 40-41-87. (see laxcfwlox).

Wind advisory in effect until 2 pm pdt Wednesday for zones
44>46-53-54-88-547. (see laxnpwlox).

Pz... Small craft advisory for hazardous seas in effect until 9 am
pdt Wednesday for zone 645. (see laxmwwlox).

Gale warning in effect until 3 am pdt Wednesday for zones
670-673-676. (see laxmwwlox).

Hazard potential outlook (fri-tue)
another round of strong and gusty northerly winds are expected
Friday.

Public... Hall/mw
aviation... Hall
marine... Sweet/sirard
synopsis... Munroe/sirard
weather.Gov/losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46218 - Harvest, CA (071) 25 mi39 min 54°F13 ft
46259 26 mi39 min 57°F13 ft
46257 26 mi39 min 54°F13 ft
HRVC1 30 mi51 min 1018.4 hPa
46011 - SANTA MARIA - 21 NM Northwest of Point Arguello, CA 30 mi79 min NNW 14 G 16 56°F 55°F11 ft1020.4 hPa (-0.4)
PTGC1 - Point Arguello, CA 31 mi69 min N 27 G 29 58°F 1018.4 hPa (-0.9)
46054 - SANTA BARBARA W 38 NM West of Santa Barbara, CA 45 mi79 min NNW 14 G 18 59°F 54°F12 ft1017 hPa (-0.4)
46215 - Diablo Canyon, CA (076) 49 mi49 min 55°F9 ft

Wind History for Port San Luis, CA
(wind in knots)    EDIT      (on/off)   Help
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G4
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SW2

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Lompoc, Vandenberg Air Force Base, CA38 mi11 minN 106.00 miFair with Haze55°F44°F67%1019.2 hPa

Wind History from VBG (wind in knots)
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Last 24hrN12N10N12N11N11N7N8N7N14N13N14N17N20N19N16N18
G22
N12N6CalmNE12NE11NE13CalmN10
1 day agoNE34N12N10N14N10N15N18
G22
N21NW17N22
G28
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G31
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G36
N25
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2 days agoN12N12N12N9N7N11N16N19N15N16
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G20
N12N9N6N7N8N6N7N6

Tide / Current Tables for Point Arguello, California
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Point Arguello
Click for Map
Wed -- 05:32 AM PDT     -0.08 feet Low Tide
Wed -- 06:53 AM PDT     Sunrise
Wed -- 08:10 AM PDT     Moonrise
Wed -- 11:46 AM PDT     4.49 feet High Tide
Wed -- 05:33 PM PDT     0.56 feet Low Tide
Wed -- 07:21 PM PDT     Sunset
Wed -- 09:25 PM PDT     Moonset
Wed -- 11:52 PM PDT     5.26 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.94.231.70.60-00.51.52.63.74.34.54.13.22.21.20.70.61.12.13.24.35

Tide / Current Tables for Oil Platform Harvest (Topex Project), California
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Oil Platform Harvest (Topex Project)
Click for Map
Wed -- 05:26 AM PDT     -0.06 feet Low Tide
Wed -- 06:53 AM PDT     Sunrise
Wed -- 08:10 AM PDT     Moonrise
Wed -- 11:34 AM PDT     4.64 feet High Tide
Wed -- 05:27 PM PDT     0.58 feet Low Tide
Wed -- 07:21 PM PDT     Sunset
Wed -- 09:25 PM PDT     Moonset
Wed -- 11:45 PM PDT     5.50 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
5.14.231.70.6-000.71.72.93.94.54.64.13.12.11.20.60.71.22.33.54.65.3

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 (5,6,7,8)
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Ground Weather Radar Station Vandenberg AFB, CA
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weather_mapweather_map weather_map

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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.