Sunrise 6:22 AM   Sunset 7:39 PM Moonrise 3:01 PM   Moonset 3:33 AM

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PZZ645 Point Piedras Blancas To Point Sal Westward Out To 10 Nm- 829 Pm Pdt Thu Apr 18 2024
Tonight - W winds 10 kt in the evening, becoming variable 10 kt or less. Wind waves 2 ft or less. Mixed swell nw 3 ft at 8 seconds and S 3 to 4 ft at 15 seconds. Patchy fog. Fri - Winds variable 10 kt or less, becoming W 10 to 15 kt in the afternoon. Wind waves 2 ft or less. Mixed swell nw 2 to 4 ft at 8 seconds and S 3 to 4 ft at 14 seconds. Patchy fog in the morning.Fri night - NW winds 10 to 15 kt, becoming variable 10 kt or less. Wind waves 2 ft or less. Mixed swell nw 3 to 4 ft at 7 seconds and S 3 ft at 15 seconds. Patchy fog after midnight. Sat - NW winds 5 to 10 kt becoming 10 to 20 kt with gusts to 25 kt in the afternoon. Wind waves 2 to 4 ft. Mixed swell nw 3 to 4 ft at 6 seconds and S 3 ft at 15 seconds. Patchy fog in the morning.Sat night - NW winds 15 to 20 kt in the evening, becoming N 10 to 15 kt. Wind waves 2 to 4 ft. NW swell 5 to 6 ft at 7 seconds.Sun - N winds 10 to 15 kt, becoming nw 15 to 25 kt with gusts to 30 kt in the afternoon. Combined seas 6 to 8 ft dominant period 8 seconds. Sun night - NW winds 15 to 25 kt with gusts to 30 kt in the evening, becoming 10 to 15 kt. Combined seas 6 to 8 ft dominant period 10 seconds. Patchy fog after midnight. Mon - W winds 5 to 10 kt. Wind waves 2 ft or less. NW swell 5 to 7 ft. Patchy fog. Tue - SW winds 5 to 10 kt. Wind waves 2 ft or less. NW swell 4 to 5 ft. Patchy fog.

PZZ600 829 Pm Pdt Thu Apr 18 2024
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 1028 mb high was centered north of washington state, while a 10005 mb low was centered in southern nevada.

FXUS66 KLOX 190615 AFDLOX

Area Forecast Discussion...UPDATED National Weather Service Los Angeles/Oxnard CA 1115 PM PDT Thu Apr 18 2024

SYNOPSIS
18/827 PM.

Strengthening onshore flow will bring a cooling trend to most areas through Friday, along with more extensive night through morning low clouds and fog. A warming trend is expected over the weekend as weak ridging builds in aloft. A significant cooling trend with a very deep marine layer is expected starting Tuesday and persisting through late next week.

.SHORT TERM (TNT-SUN)...18/827 PM.

***UPDATE***

A slightly cooler day across the area today, especially along the Central Coast where a stubborn marine provided only brief clearing during the afternoon hours. Peak highs were near 80 in the valleys, with low 80s observed in the Antelope Valley.

Expect further cooling of about 3 to 5 degrees for most places tomorrow with highs in the 60s and 70s. A weak upper trough will swing across the area, helping to spin up a deepening marine layer that will push farther inland tonight into early Friday. Low clouds could extend through San Luis Obispo County to the eastern border overnight. This layer will likely be slow to clear, similarly to today, with a chance of reverse clearing over the beaches. Due to higher ceilings, the beaches won't see much fog, with there will be areas of fog affecting many foothill locations.

***From Previous Discussion***

Some additional deepening expected Friday night as well, however weak ridging is expected to move into the area Saturday along with weakening onshore flow that should lead to earlier clearing and warmer temperatures in most areas. Much less stratus expected Sunday with much warmer temperatures, likely the warmest day for at least a week if not longer with mid 80s in the valleys and mid to high 70s for coastal areas away from the immediate coast.

.LONG TERM (MON-THU)...18/149 PM.

Ridging will weaken Monday as a trough approaches from the west.
The trough will be the dominant player next week keeping temperatures below normal starting Tuesday and lasting into the following weekend. Ensemble solutions have been hinting at some light rain chances the latter half of the week but the best chances seem to be next Friday which is still outside the current 7 day forecast window. The first trough comes through Wednesday and some drizzle can't be ruled out that morning. Otherwise, just much cooler temperatures with highs mostly in the 60s. Strong onshore flow expected most of the week, meaning a steady does of marine layer stratus for coast and valleys, later than usual clearing, and gusty winds across the interior, especially later in the week.

AVIATION
19/0615Z.

Around 0530Z, the marine layer depth was about 1400 ft deep at KLAX. The top of the inversion was near 3200 feet with a temperature at 15 degrees Celsius.

Moderate confidence in the current forecast. Higher confidence in flight categories. Lower confidence in timing.

Sub-VFR conditions at coastal terminals should improve one category between through 13Z. There is a moderate chance of VLIFR conditions at terminals north of Point Conception between 07Z and 13Z. Conditions should improve to MVFR between 15Z and 18Z. A later clearing is expected on Friday. There is a moderate chance that all coastal terminals may not clear at all.

KLAX...MVFR conditions are likely through at least 20Z. Ceilings will lift above 2000 feet between 15Z and 20Z. There is a 40 percent chance of VFR conditions developing between 22Z and 02Z. If VFR conditions develop, an early return of MVFR conditions should be expected with an arrival between 02Z and 04Z.

KBUR...IFR conditions will spread into KBUR between 08Z and 10Z, then lift one category between 13Z and 15Z. There is a 10 percent chance of VLIFR conditions developing around arrival until as late as 10Z. VFR conditions should develop between 18Z and 20Z with a 30 percent chance of ceilings at or below 5000 feet lingering through the afternoon.

MARINE
18/833 PM.

High confidence in conditions remaining below Small Craft Advisory (SCA) levels thru Saturday morning, except for localized SCA level NW-W winds south of Point Conception Friday afternoon and evening. SE winds around 10 knots should occur each morning from the SBA Channel southward to San Mateo Point. Locally stronger SE gusts are possible thru the Anacapa Passage and San Pedro Channel.

NW winds will likely reach SCA levels in the outer waters Saturday afternoon through Sunday, and across the inner waters north of Point Sal and the Santa Barbara Channel during the afternoon/evening hours over the weekend. These winds will build short period seas over all waters. There is a 30% chance of SCA conditions in the outer waters Monday.

LOX WATCHES/WARNINGS/ADVISORIES
CA...NONE.
PZ...NONE.

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Avila
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Fri -- 02:06 AM PDT     -0.41 feet Low Tide
Fri -- 04:32 AM PDT     Moonset
Fri -- 06:24 AM PDT     Sunrise
Fri -- 07:31 AM PDT     1.38 feet High Tide
Fri -- 02:15 PM PDT     -2.19 feet Low Tide
Fri -- 03:59 PM PDT     Moonrise
Fri -- 07:39 PM PDT     Sunset
Fri -- 08:55 PM PDT     1.57 feet High Tide
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