Friday, December6, 2019
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Marine Weather and Tides
Lompoc, CA

Version 3.4
NOTICE
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.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 6:53AMSunset 4:52PM Friday December 6, 2019 12:10 PM PST (20:10 UTC) Moonrise 1:56PMMoonset 1:30AM Illumination 74% Phase: Waxing Gibbous; Moon at 10 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- 739 Am Pst Fri Dec 6 2019
.small craft advisory in effect through late tonight...
Today..SE winds 10 to 20 kt, becoming 15 to 25 kt with gusts to 30 kt in the afternoon. Strongest northwestern portion. Combined seas 4 to 6 ft dominant period 13 seconds. Slight chance of showers.
Tonight..SE winds 15 to 25 kt with local gusts to 30 kt. Strongest northwestern portion. Combined seas 7 to 10 ft dominant period 17 seconds. Chance of rain.
Sat..SE winds 15 to 25 kt with gusts to 30 kt, becoming 10 to 20 kt in the afternoon. Combined seas 9 to 11 ft dominant period 15 seconds. Rain likely.
Sat night..S winds 10 to 15 kt. Wind waves 2 ft or less. W swell 8 to 9 ft at 13 seconds. Chance of rain.
Sun..SW winds 5 to 10 kt, becoming W 10 to 15 kt in the afternoon. Wind waves 2 ft or less. W swell 8 to 9 ft at 12 seconds. Chance of showers.
Sun night..NW winds 10 to 15 kt, becoming 15 to 20 kt with local gusts to 25 kt after midnight. Wind waves 2 to 4 ft. W swell 6 to 8 ft at 11 seconds. Slight chance of showers in the evening.
Mon..NW winds 15 to 20 kt with gusts to 25 kt. Combined seas 5 to 7 ft.
Tue..NW winds 10 to 15 kt. Wind waves 2 ft or less. W swell 4 to 5 ft.
PZZ600 739 Am Pst Fri Dec 6 2019
Synopsis for the southern california coast and santa barbara channel including the channel islands national marine sanctuary and national park..At 15z or 7 am pst, a 985 mb low was 600 nm west of eureka with a cold front extending well S of the low over the E pac.


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 061752 AFDLOX

Area Forecast Discussion National Weather Service Los Angeles/Oxnard CA 952 AM PST Fri Dec 6 2019

SYNOPSIS. 06/814 AM.

An eastern Pacific storm system will bring increasing clouds today with rain becoming likely between tonight and Saturday and snow above seven thousand feet. Showers will linger into Sunday, then a general warming and drying trend starts next week.

SHORT TERM (TDY-SUN). 06/952 AM.

Dry weather to start the day with plenty of sunshine but that will be changing later on into this evening, especially south of Pt Conception. This next system is taking on a slightly different configuration adding to the complexity of it, though still not seeing any significant impacts. Radar and satellite imagery picking up on some clouds and possible showers to the southwest associated with some subtropical moisture while the main frontal band is still several hundred miles to the northwest. Models, especially the higher res ones are picking up on that subtropical moisture and showing precip developing as early as late this afternoon south of Pt Conception and continuing off and on through Saturday morning. Meanwhile, farther north showers may be slower to develop as we await the arrival of the first cold front Saturday morning into afternoon, which will then move into southern areas Saturday night.

So a somewhat more complicated scenario leading to lower confidence in timing, but still looks like a damp weekend in general with mostly light rainfall rates (under .10"/hr). Will likely need to increase pops southern areas tonight and may lower pops up north tonight pending additional model guidance this afternoon.

***From previous discussion***

The latest infrared imagery from GOES-West shows an upper-level trough of low pressure centered near 39N and 137W and moving east toward the North Coast of California. A plume of tropical moisture can be seen coming together on the southeastern edge of the of trough's influence north of 20N and between 120W and 130W. This subtropical moisture will become embedded into the trough later today and move over the region tonight and Saturday. 850 mb mixing ratios exceed 8 g/kg across portions of the area in the latest model solutions, with the best moisture moving south of the area. Though there is weak dynamics with the trough, orographic lift will make up for the rest. A weak warm air advective pattern develops in the lower levels later today, and as this air mass hits the topographic features of southern California, it will be lifted additionally and work with the moist air mass to produce precipitation. PoPs and QPF values have been increased in the latest forecast, more inline with NCEP WRF and NBM solutions and NWS WPC guidance. Rain with snow above 7000 feet will become likely between tonight and Saturday across much of the area. Rainfall rates will be light (around 0.05-0.10 inch/hour), but long duration light rainfall should allow for totals to approach between 0.50-1.00 inch across most of the area with local amounts up to 1.50-2.00 inches along favored south facing slopes and foothills. Breezy to locally gusty south winds are expected across the mountains and north and west of Santa Barbara. Southerly winds are marginal for a wind advisory. Winds are lighter than in the previous model solutions and have backed off an advisory for the usual sites. Mentions of local advisory level winds have been mentioned for now.

Rain should taper off to showers sometime between Saturday night and Sunday, but shower activity could linger into Monday as another shortwave trough digs down on the back side of the broader trough circulation. This could bring lower snow levels in scattered rain and snow showers along the northern slopes. There is a chance that the Interstate 5 Corridor could be affected by snow showers and breezy winds between Sunday and Monday, but it seems unlikely at this time.

LONG TERM (MON-THU). 06/305 AM.

The trough should clear out of the region on Monday and be replaced by an upper-level ridge of high pressure. Warming and drying should take place for early next week, then a weak weather system could bring a break in the warming trend and possibly a bit more clouds for Wednesday. A showery weather pattern could develop Wednesday, but a majority of the ensemble solutions favor a drier solution at this time.

Strong ridging aloft develops late next week and should bring additional warming to the area after Thursday. Temperatures could warm to 5-10 degrees above normal for this time of year.

AVIATION. 06/1707Z.

At 1630Z, there was no marine inversion at KLAX.

Overall, low to moderate confidence in 18Z TAF package. High confidence in VFR conditions for all sites through early this evening. Late this evening through Saturday morning, high confidence in development of light rain, but low confidence in timing of rain as well as associated CIG/VSBY categories (MVFR likely with a chance of IFR).

KLAX . Overall, moderate confidence in 18Z TAF. High confidence in VFR conditions through this evening. For tonight, high confidence in light rain developing, but low confidence in timing. As for CIG/VSBY categories, high confidence in MVFR conditions overnight, but low confidence in timing of flight category changes. Moderate confidence in easterly winds around 8 knots after 08Z.

KBUR . Overall, moderate confidence in 18Z TAF. High confidence in VFR conditions through this evening. For tonight, high confidence in light rain developing, but low confidence in timing. As for CIG/VSBY categories, high confidence in MVFR conditions overnight (with a chance of IFR conditions), but low confidence in timing of flight category changes.

MARINE. 06/907 AM.

For the Outer Waters, moderate to high confidence in current forecast. For PZZ670, high confidence in Small Craft Advisory (SCA) level southeast winds through this afternoon with a 70% chance of Gale force winds late this afternoon through tonight. Winds and seas will likely remain at SCA levels (at least) through Saturday morning. For PZZ673, high confidence in SCA level winds and seas through tonight with a 80% chance of SCA conditions continuing through Saturday afternoon. For PZZ676, there is a 40% chance of SCA level winds tonight/Saturday. For Sunday night and Monday, there is a 70% chance of SCA level northwest winds across PZZ673 and PZZ676.

For the Inner Waters north of Point Sal, moderate to high confidence in current forecast. High confidence in SCA level southeast winds through tonight with a 70% chance of the SCA level winds continuing through Saturday afternoon. There is a 30% chance of local Gale force gusts tonight. For Sunday through Tuesday, high confidence in conditions remaining below SCA levels.

For the Inner Waters south of Point Conception, moderate to high confidence in current forecast. There is a 50% chance of SCA level southeast winds across the western half of the Santa Barbara Channel tonight. Otherwise, high confidence in winds and seas remaining below SCA levels today through Tuesday across the southern Inner Waters.

LOX WATCHES/WARNINGS/ADVISORIES. CA . High Surf Advisory in effect from 10 PM this evening to 8 AM PST Sunday for zones 34-35. (See LAXCFWLOX). High Surf Advisory in effect from 2 AM Saturday to 8 AM PST Sunday for zone 40. (See LAXCFWLOX). PZ . Small Craft Advisory in effect until 3 AM PST Saturday for zones 645-673. (See LAXMWWLOX). Small Craft Advisory in effect until 3 PM PST this afternoon for zone 670. (See LAXMWWLOX). Gale Warning in effect from 3 PM this afternoon to 3 AM PST Saturday for zone 670. (See LAXMWWLOX).

.HAZARD POTENTIAL OUTLOOK (SUN-THU).

No significant hazards expected.



PUBLIC . MW/Hall AVIATION . RAT MARINE . RAT SYNOPSIS . jld

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 mi51 min SSE 12 G 14 59°F 60°F1020.2 hPa55°F
HRVC1 10 mi71 min 63°F 1020.1 hPa (+1.1)
46218 - Harvest, CA (071) 14 mi71 min 61°F3 ft
PTGC1 - Point Arguello, CA 15 mi71 min S 9.9 G 19 60°F 1019.5 hPa (+1.3)
46053 - E. SANTA BARBARA - 12NM Southwest of Santa Barbara, CA 37 mi51 min ESE 9.7 G 12 62°F 61°F1021.4 hPa58°F
NTBC1 - Santa Barbara, CA - 9411340 44 mi95 min NE 2.9 G 5.1 62°F 1021.3 hPa
46011 - SANTA MARIA - 21 NM Northwest of Point Arguello, CA 47 mi51 min SSE 16 G 18 59°F 59°F1019.4 hPa54°F

Wind History for Santa Barbara, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Lompoc, Lompoc Airport, CA20 mi15 minSSE 1010.00 miMostly Cloudy65°F53°F66%1019.3 hPa

Link to 5 minute data for KLPC

Wind History from LPC (wind in knots)
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1 day agoSW6S7SW66SE4E5SE6E5SE7SE4E6SE4SE5E5SE3SE3CalmE4E3SE7SE5SE75SE4
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Tide / Current Tables for Gaviota, California
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Gaviota
Click for Map
Fri -- 01:28 AM PST     Moonset
Fri -- 06:22 AM PST     4.69 feet High Tide
Fri -- 06:53 AM PST     Sunrise
Fri -- 12:49 PM PST     1.55 feet Low Tide
Fri -- 01:54 PM PST     Moonrise
Fri -- 04:50 PM PST     Sunset
Fri -- 06:25 PM PST     3.52 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.21.52.12.93.74.34.74.64.23.52.82.11.71.61.82.22.83.23.53.53.12.621.5

Tide / Current Tables for Cuyler Harbor, San Miguel Island, California
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Cuyler Harbor
Click for Map
Fri -- 01:29 AM PST     Moonset
Fri -- 06:16 AM PST     4.59 feet High Tide
Fri -- 06:52 AM PST     Sunrise
Fri -- 12:46 PM PST     1.52 feet Low Tide
Fri -- 01:55 PM PST     Moonrise
Fri -- 04:51 PM PST     Sunset
Fri -- 06:19 PM PST     3.45 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.11.52.12.93.74.34.64.54.13.42.721.61.51.72.22.73.23.43.432.51.91.5

Weather Map
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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.
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Wind Forecast for Los Angeles/Oxnard, CA (15,3,4,5)
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Ground Weather Radar Station Vandenberg AFB, CA
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