Tuesday, March31, 2020
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Marine Weather and Tides
Lompoc, CA

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 6:47AMSunset 7:23PM Tuesday March 31, 2020 1:18 PM PDT (20:18 UTC) Moonrise 10:31AMMoonset 12:24AM Illumination 53% Phase: First Quarter Moon; Moon at 8 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- 920 Am Pdt Tue Mar 31 2020
.small craft advisory in effect until 3 pm pdt this afternoon...
.gale warning in effect from 3 pm pdt this afternoon through late Wednesday night...
Today..NW winds 15 to 25 kt, becoming 20 to 30 kt in the afternoon. Gusts to 35 kt. Strongest northwestern portion. Combined seas 5 to 7 ft dominant period 7 seconds, building to 8 to 9 ft dominant period 7 seconds in the afternoon.
Tonight..NW winds 20 to 30 kt with gusts to 40 kt. Combined seas 9 to 11 ft dominant period 9 seconds.
Wed..NW winds 20 to 30 kt with gusts to 40 kt. Combined seas 9 to 11 ft dominant period 8 seconds, building to 11 to 13 ft dominant period 10 seconds in the afternoon.
Wed night..NW winds 25 to 35 kt with gusts to 45 kt, becoming 20 to 30 kt with gusts to 35 kt after midnight. Combined seas 12 to 14 ft dominant period 10 seconds, subsiding to 11 to 12 ft dominant period 10 seconds after midnight.
Thu..NW winds 20 to 25 kt with gusts to 30 kt. Combined seas 9 to 10 ft dominant period 11 seconds.
Thu night..NW winds 25 to 30 kt, becoming 20 to 25 kt with local gusts to 35 kt after midnight. Combined seas 9 to 11 ft dominant period 10 seconds.
Fri..NW winds 20 to 25 kt with gusts to 30 kt. Combined seas 7 to 10 ft.
Sat..NW winds 15 to 25 kt with gusts to 30 kt. Combined seas 7 to 9 ft.
PZZ600 920 Am Pdt Tue Mar 31 2020
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 1030 mb high pressure center remains about 900 nm west of point conception. Northwest flow will increase across the coastal waters today. Gale force winds are possible later today and tomorrow across the outer waters.


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


Area Discussion for - Los Angeles/Oxnard, CA
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FXUS66 KLOX 311814 AFDLOX

Area Forecast Discussion National Weather Service Los Angeles/Oxnard CA Issued by National Weather Service San Francisco CA 1114 AM PDT Tue Mar 31 2020

SYNOPSIS. 31/106 AM.

Conditions will be warm and dry through Saturday then there is a slight chance of rain across the region late Sunday through early Tuesday. Temperatures will be cooler as the weak storm moves through but any snow will be well above the major passes.

SHORT TERM (TDY-THU). 31/938 AM.

Morning satellite imagery reveals filtered sunshine covering most of the region as widespread high clouds fill in from the SW. These high clouds are associated weak upper level low approaching far Southern California/Northern Baja. Additionally, patchy fog is also showing up in the Southern Salinas Valley and Paso Robles region. The Paso Robles Airport had reported dense earlier this morning, but latest observations shows rapid improvement. The fog will likely dissipate by 10 AM at the latest. The bigger weather impact today will be gusty offshore flow for southern SB County and the I5 Corridor later this afternoon. This will likely be a short fused wind event and will require a low end wind advisory to be issued. Per hi-res models and gradient strength wind gusts of 40 to 50 mph will be possible. Current thinking is wind advisory this afternoon through the middle of the night.

***From Previous Discussion***

Dry NW flow over the area. Some high clouds are spilling off of a weak disturbance to the SW and this will make skies partly cloudy today. There will be weak offshore flow this morning both from the east and north and this along will 578 DM hgts will make it the warmest day of the next 7. Almost all non mountain temps will be in the 70s and would not be surprised if a location or two hit 80 today.

A barely perceptible disturbance will move over the area this afternoon. It will do nothing except to increase the NW to N winds across the area. Gusty winds will develop across the SBA south coast (esp the Gaviota area), the I-5 corridor and the NW portion of the Antelope Vly. Some low end advisories may be needed in these areas. The eddy will be a little stronger and there will likely bring some stratus to the LA coast and San Gabriel Vly.

Not much change on Wednesday. Skies will be sunny save for the patches of morning low clouds. Max temps will fall 2 to 4 degrees as the hgts fall and may fall even more if the hgt falls come a little sooner than fcst.

Still gusty but slightly weaker winds again on tap for Wednesday night as the northerly grads relax some. A better eddy will bring more in the way of low clouds to the LA cst and lower vlys and perhaps into the VTA coast as well.

Not expecting much in the way of clouds on Thursday but a little trof will ripple over the state and usher in a little more cool air. Expect max temps to drop a few more degrees and end up 3 to 6 degrees blo normal.

LONG TERM (FRI-MON). 31/312 AM.

Hgts rise just a touch on Friday and max temps will nose up 1 to 2 degrees under mostly clear skies.

The EC and the GFS are not in the best of agreement on Saturday but both mdls have some sort of trof moving through the north of the state something late morning through early evening. All and all not the greatest of effects on the days weather. Skies will probably turn partly cloudy and max temps will sag down 2 to 4 degrees maybe a little more or maybe a little less depending on the onset of the lower hgts. The faster GFS would lead to a cooler day.

The EC and the GFS are struggling to figure out to handle the track of a cold upper low rotating out of BC. There has been little in the way of agreement between the mdls or from run to run. The ensembles, as is ofter the case when operational mdls are confused, have a much larger than normal solution spread.

The EC is the wetter of the two mdls but the GFS has trended toward the EC soln. Pretty sure every area will see some rain during the 48 hour period just not sure how much or exactly when. For now will broad brush in clouds and chc pops and wait for the mdls to converge on a solution.

Cooler for sure with max temps around 10 degrees blo normal.

AVIATION. 31/1814Z.

At 18z at KLAX . little change in depth of the marine inversion since morning. VFR for the forecast period.

Overall . Moderate confidence in the current TAFs. VFR at all area terminals as of 18z, at KPRB there is a thirty percent chance of LIFR/IFR returning after 01/12z. There is a twenty percent chance of IFR/MVFR CIGs after 11z at KSBP, KSMX, KSMO, KLAX, AND KLGB. Otherwise and elsewhere VFR conditions will prevail.

LAX . Moderate confidence in the current TAF. VFR then there is a twenty percent chance of IFR/MVFR CIGs after 01/11z. There is a less than ten percent chance of east winds greater than 8 knots 01/08z- 16z.

BUR . High confidence in the current TAF. VFR conditions will prevail throughout the forecast period.

MARINE. 31/945 AM.

For the outer waters . Conditions will be elevated to at least Small Craft Advisory (SCA) level through Saturday with the winds likely to increase to gale force this afternoon through late tomorrow, especially north of Point Sal. There is a thirty five percent chance that any gales will linger into Thursday night.

For the inner waters . For the western half of the Santa Barbara Channel, SCA level winds are likely today through Saturday, mostly during the late afternoon and evening hours. Additionally, SCA level winds are expected to develop this afternoon north of Point Sal before winds diminish late tonight. Elsewhere, winds and seas will remain below SCA levels through Friday with a forty percent chance of the winds becoming SCA level on Saturday.

There will be hazardous short period seas under 9 seconds this week across most of the waters

LOX WATCHES/WARNINGS/ADVISORIES. CA . NONE. 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 3 PM PDT this afternoon for zones 670-673-676. (See LAXMWWLOX). Gale Warning in effect from 3 PM this afternoon to 3 AM PDT Thursday for zones 670-673-676. (See LAXMWWLOX).

.HAZARD POTENTIAL OUTLOOK (THU-MON).

No significant hazards expected.

PUBLIC . MM/Rorke AVIATION . Canepa/Kj MARINE . AS/Kj SYNOPSIS . Kj

weather.gov/losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46054 - SANTA BARBARA W 38 NM West of Santa Barbara, CA 8 mi29 min NW 25 G 31 58°F 57°F6 ft1016.5 hPa52°F
HRVC1 10 mi49 min 57°F 1018.8 hPa
46218 - Harvest, CA (071) 14 mi49 min 57°F7 ft
PTGC1 - Point Arguello, CA 15 mi79 min NNW 27 G 31 56°F 1017.5 hPa (-1.0)
46053 - E. SANTA BARBARA - 12NM Southwest of Santa Barbara, CA 37 mi29 min SW 1.9 G 1.9 59°F 57°F2 ft1017 hPa58°F
NTBC1 - Santa Barbara, CA - 9411340 44 mi43 min SW 8 G 8.9 59°F 1016.6 hPa
46011 - SANTA MARIA - 21 NM Northwest of Point Arguello, CA 47 mi29 min NW 18 G 23 57°F 58°F6 ft1019.5 hPa53°F

Wind History for Santa Barbara, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Lompoc, Lompoc Airport, CA20 mi23 minN 13 G 2110.00 mi76°F46°F36%1017.4 hPa

Link to 5 minute data for KLPC

Wind History from LPC (wind in knots)
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W10W10W7W7CalmCalmCalmE3SE3E3CalmCalmE4E3E3--N8N17
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Tide / Current Tables for Oil Platform Harvest (Topex Project), California
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for Point Arguello, California
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Weather Map
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wmap_P
GEOS 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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Los Angeles/Oxnard, CA (16,3,4,5)
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Ground Weather Radar Station Vandenberg AFB, 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 numerous 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.