Thursday, July29, 2021
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Marine Weather and Tides
Templeton, CA

Version 3.4
NOTICE
3/30/2021 -- ANZ330 has been split into ANZ331 and ANZ332. Click EDIT in Marine Forecast and select your new zone.
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 6:07AMSunset 8:10PM Thursday July 29, 2021 1:22 AM PDT (08:22 UTC) Moonrise 10:46PMMoonset 10:50AM Illumination 75% Phase: Waning Gibbous; Moon at 20 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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PZZ645 Point Piedras Blancas To Point Sal Westward Out To 10 Nm- 844 Pm Pdt Wed Jul 28 2021
Tonight..NW winds 10 to 15 kt in the evening, becoming 5 to 10 kt. Wind waves 2 ft late in the evening, becoming 2 ft or less. Mixed swell nw 2 to 4 ft at 7 seconds and S 2 ft at 12 seconds. Patchy fog.
Thu..Winds variable 10 kt or less, becoming nw 10 to 15 kt in the afternoon. Wind waves 2 ft or less. Mixed swell nw 3 ft at 7 seconds and S 2 ft at 13 seconds. Patchy fog.
Thu night..NW winds 10 to 15 kt in the evening, becoming variable 10 kt or less. Wind waves 2 ft or less. Mixed swell nw 3 ft at 6 seconds and S 2 ft at 13 seconds. Patchy fog.
Fri..Winds variable 10 kt or less, becoming W 10 kt in the afternoon. Wind waves 2 ft or less. Mixed swell nw 2 to 3 ft at 7 seconds and S 2 ft at 14 seconds. Patchy fog in the morning.
Fri night..W winds 10 kt in the evening, becoming variable 10 kt or less. Wind waves 2 ft or less. Mixed swell nw 2 to 3 ft at 7 seconds and S 2 ft at 14 seconds. Patchy fog after midnight.
Sat..Winds variable 10 kt or less, becoming W 10 kt in the afternoon. Wind waves 2 ft or less. Mixed swell nw 2 to 3 ft at 7 seconds and S 2 ft at 13 seconds. Patchy fog in the morning.
Sat night..NW winds 5 to 10 kt. Wind waves 2 ft or less. Mixed swell nw 3 ft at 5 seconds and S 2 ft at 13 seconds. Patchy fog after midnight.
Sun..Winds variable 10 kt or less, becoming nw 10 to 15 kt in the afternoon. Wind waves 2 ft or less. Mixed swell nw 2 to 3 ft and S 2 ft. Patchy fog.
Mon..NW winds 10 to 15 kt with gusts to 20 kt. Wind waves 1 to 3 ft. NW swell 4 to 6 ft. Patchy fog.
PZZ600 844 Pm Pdt Wed Jul 28 2021
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 pdt, a 1023 mb high was located 1000 nm west of point conception, and a 1005 mb low was west of las vegas.


7 Day Forecast for Marine Location Near Templeton, CA
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location: 35.56, -120.71     debug


Area Discussion for - Los Angeles/Oxnard, CA
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FXUS66 KLOX 290554 AFDLOX

Area Forecast Discussion National Weather Service Los Angeles/Oxnard CA 1054 PM PDT Wed Jul 28 2021

SYNOPSIS. 28/837 PM.

High pressure aloft over the West will keep a warm air mass in place into next week. Some cooling is expected over the weekend as an area of low pressure brushes the area, but high pressure aloft will likely build back in for next week. There will be a slight chance of afternoon thunderstorms across the eastern mountains and desert through Saturday. Night through morning low clouds and fog will remain confined to the coast and lower coastal valleys.

SHORT TERM (WED-SAT). 28/901 PM.

A broad upper-level ridge of high pressure is currently centered over the Plains States, while a weak nearly stationary trough continues to be anchored near 38N and 130W. Southeast flow aloft will remain in place over the region through at least Saturday and keep the possibility of isolated showers and thunderstorms over the mountains and desert. An isolated shower popped up over the eastern portion of the Antelope Valley late this afternoon and early this evening. The air mass is stabilizing for the night as daytime heating is lost. An isolated shower or thunderstorm is possible across the same areas tomorrow, with the slightly better chance on Friday afternoon and evening.

With high pressure aloft in place, a warm air mass will remain in place over the next several days, but the trough to the west of the area, will bring slight cooling and a uptick of onshore flow. Southwest flow aloft will develop over the weekend as the ridge pulls away a little farther to the east. The air mass will dry and the threat of showers and thunderstorms looks to decline.

A few tweaks will be made to the forecast for marine layer low clouds and fog and to adjust temperatures a little warmer for the interior portions of the area.

***From Previous Discussion***

A large upper-level high centered over the Central Plains and expanding towards the west coast will continue to dominate our weather pattern through the week. This will keep the marine layer quite shallow and keep stratus confined to the coastal areas and lowest coastal valleys each day. The valleys will be warm with temperatures in the 90s with little day-to-day change. Temperatures will largely remain close to normal, with the interior areas a few degrees above normal.

The main weather highlight through the short term will be the potential for afternoon thunderstorms for the eastern San Gabriels and Antelope Valley. For Thursday, models are indicating less impressive looking convective parameters as compared to this afternoon. In addition, there is even less deep moisture with PWATs less than 1 inch. However, with continued broad southeast flow aloft and modest instability, cannot rule out the potential for thunderstorms. There will be a non-zero chance, but too low of a chance to include in the forecast. On Friday, the center of the high will become more elongated with a negative tilt which is more conducive to drawing in monsoonal flow. Models also indicate vort lobes passing to the east around the Nevada border. Despite models continuing to indicate less than stellar convective parameters, these vort lobes could help trigger some convection. Therefore will keep slight chance PoPs with a slight chance of thunderstorms in place. On Saturday the upper-high starts to shift and lose its tilt as it amplifies into western Canada. As a result, the flow aloft will shift from southeast to southwest, thus cutting off the monsoonal flow. It appears that the shift will occur later in the afternoon and will keep slight chance PoPs in place. However, confidence is low as any change in timing of the shift could greatly affect convective potential.

LONG TERM (SUN-WED). 28/138 PM.

The GFS and ECMWF remain in fairly good agreement through the extended period. A highly amplified upper ridge will hang out over the western US early next week then weaken by mid-week. This will keep broad, dry southwest flow aloft over the area. There will be a slight warming trend across the interior with temperatures about 3-5 degrees above normal. High pressure will continue to keep the marine layer shallow, but increasing onshore flow may help stratus crawl into the coastal valleys. Otherwise next week will be a return to a fairly quiet weather pattern.

AVIATION. 29/0554Z.

At 2319Z, the marine inversion at KLAX was based at 700 feet. The top of the inversion was near 2500 feet with a temperature of 26 degrees Celsius.

Overall, moderate to high confidence in 06Z TAF package. High confidence in CAVU conditions for valley/desert TAF sites. For coastal TAF sites, moderate confidence in coverage of CIG/VSBY restrictions as well as timing. Marine layer clouds will probably be more sparse south of KSBA, and arrival could be delayed by 1-2 hrs.

KLAX . Overall, moderate confidence in 06Z TAF. Moderate confidence in return of IFR conditions tonight, but low confidence in timing (could be +/- 2 hours of current 10Z forecast). No significant easterly winds are expected.

KBUR . High confidence in 06Z TAF as CAVU conditions are expected.

MARINE. 28/907 PM.

For the Outer Waters, moderate confidence in current forecast. For PZZ670, high confidence winds and seas remaining below Small Craft Advisory (SCA) levels through Sunday with a 50% chance of SCA level winds on Monday. For the waters south of Point Sal, a Small Craft Advisory has been issued through Thursday night. There is a decent chance that SCA winds will reoccur during the afternoon to evening hours Friday and Saturday, with a little less confidence for SCA level winds Sunday and Monday.

For the Inner Waters north of Point Sal, high confidence in current forecast. Through Sunday, winds and seas are expected to remain below SCA levels. On Monday, there is a 20% chance of SCA level winds in the afternoon and evening hours.

For the Inner Waters south of Point Conception, moderate confidence in current forecast. For the western half of the Santa Barbara Channel, local SCA winds are possible tonight through Thursday night. By Friday, there is a 40% chance of SCA level winds during the late afternoon and evening hours through Friday night with a 50% chance of SCA winds Sunday and Monday. Elsewhere, high confidence in winds and seas remaining below SCA levels.

LOX WATCHES/WARNINGS/ADVISORIES. CA . NONE. PZ . Small Craft Advisory in effect until 3 AM PDT Friday for zones 673-676. (See LAXMWWLOX).

.HAZARD POTENTIAL OUTLOOK (SAT-WED).

Monsoonal thunderstorms are possible Saturday afternoon.



PUBLIC . Hall/Stewart AVIATION . Phillips/RAT MARINE . Phillips/RAT SYNOPSIS . Hall/Stewart

weather.gov/losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46215 - Diablo Canyon, CA (076) 26 mi57 min 57°F3 ft
CPXC1 27 mi29 min 2.9 G 4.1
PSLC1 - 9412110 - Port San Luis, CA 27 mi53 min N 1.9 G 2.9 59°F 60°F1016.5 hPa
46011 - SANTA MARIA - 21 NM Northwest of Point Arguello, CA 45 mi33 min 12 G 16

Wind History for Port San Luis, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Paso Robles Municipal Airport, CA9 mi30 minW 410.00 miFair64°F51°F63%1014.6 hPa
San Luis Obispo, San Luis Obispo County-Mc Chesney Field, CA22 mi27 minWNW 510.00 miOvercast58°F56°F93%1015.4 hPa

Link to 5 minute data for KPRB

Wind History from PRB (wind in knots)
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Last 24hrCalmW3CalmCalmCalmCalmCalmCalmW3W344SW12S15SW14
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1 day agoCalmCalmS5S6S6S5S6SW43CalmW45S6SW17SW18
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2 days agoCalmCalmCalmCalmCalmCalmSW3S5SW7S10S93SW13
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Tide / Current Tables for Morro Beach, Estero Bay, California (2)
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Morro Beach
Click for Map
Thu -- 02:04 AM PDT     4.22 feet High Tide
Thu -- 06:10 AM PDT     Sunrise
Thu -- 08:44 AM PDT     0.86 feet Low Tide
Thu -- 11:50 AM PDT     Moonset
Thu -- 03:33 PM PDT     4.31 feet High Tide
Thu -- 08:09 PM PDT     Sunset
Thu -- 09:40 PM PDT     2.12 feet Low Tide
Thu -- 11:46 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.644.24.13.62.92.11.410.91.21.82.53.33.94.34.343.532.52.22.12.3

Tide / Current Tables for Morro Beach, Estero Bay, California
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Morro Beach
Click for Map
Thu -- 02:04 AM PDT     4.22 feet High Tide
Thu -- 06:10 AM PDT     Sunrise
Thu -- 08:44 AM PDT     0.86 feet Low Tide
Thu -- 11:50 AM PDT     Moonset
Thu -- 03:33 PM PDT     4.32 feet High Tide
Thu -- 08:09 PM PDT     Sunset
Thu -- 09:40 PM PDT     2.12 feet Low Tide
Thu -- 11:46 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.644.24.13.62.92.11.410.91.21.72.53.33.94.34.343.532.52.22.12.3

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