Sunrise 6:09 AM   Sunset 7:33 PM Moonrise 8:37 PM   Moonset 6:24 AM

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PZZ655 Inner Waters From Point Mugu To San Mateo Pt. Ca Including Santa Catalina And Anacapa Islands- 222 Pm Pdt Wed Apr 24 2024
.small craft advisory in effect through late tonight - ..gale watch in effect from Friday afternoon through late Friday night - .
Tonight - W winds 10 to 20 kt with gusts to 25 kt, becoming 10 to 15 kt late. Strongest in the northwestern portion. Combined seas 3 to 6 ft dominant period 8 seconds. Patchy drizzle after midnight.Thu - W winds 10 to 15 kt, becoming 15 to 20 kt in the afternoon. Wind waves 2 to 3 ft. Mixed swell W 2 to 3 ft at 7 seconds and S 2 ft at 15 seconds. Patchy drizzle in the morning. Thu night - Western portion, W winds 15 to 25 kt. Elsewhere, sw winds 10 to 15 kt becoming variable 10 kt or less after midnight. Combined seas 4 to 6 ft dominant period 7 seconds. Patchy fog after midnight. Fri - Western portion, nw winds 15 to 20 kt becoming W 25 to 35 kt in the afternoon. Elsewhere, winds variable 10 kt or less becoming W 20 to 30 kt in the afternoon. Combined seas 4 to 6 ft dominant period 8 seconds, building to 6 to 8 ft. Patchy fog in the morning.Fri night - Western portion, W winds 30 to 40 kt becoming nw 20 to 30 kt after midnight. Elsewhere, W winds 25 to 35 kt becoming nw 15 to 25 kt after midnight. Combined seas 7 to 10 ft dominant period 9 seconds. Sat - Western portion, nw winds 20 to 30 kt becoming W 15 to 20 kt in the afternoon. Elsewhere, nw winds 5 to 10 kt becoming sw 10 to 20 kt in the afternoon. Combined seas 6 to 8 ft dominant period 9 seconds. Sat night - W winds 15 to 20 kt with gusts to 25 kt in the evening, becoming nw 10 to 15 kt. Combined seas 4 to 7 ft dominant period 9 seconds.Sun - W winds 10 to 15 kt. Wind waves 2 ft or less. W swell 4 to 6 ft. Mon - W winds 10 to 15 kt. Wind waves 2 ft or less. W swell 3 to 5 ft.

PZZ600 222 Pm Pdt Wed Apr 24 2024
synopsis for the southern california coast and santa barbara channel including the channel islands national marine sanctuary and national park - .at 21z, or 2 pm pdt, a 1029 mb high was centered 800 nm W of san francisco. A 1001 mb low was centered just in eastern nevada.

FXUS66 KLOX 250256 AFDLOX

Area Forecast Discussion...UPDATED National Weather Service Los Angeles/Oxnard CA 756 PM PDT Wed Apr 24 2024

SYNOPSIS
24/538 PM.

Strong onshore flow and a deep marine layer will keep temperatures much cooler than normal across much of Southwest California through Friday. Morning patchy fog and drizzle are expected across portions of the coast, valleys, and foothills. Warmer weather is expected by the weekend into early next week.

.SHORT TERM (WED-SAT)...24/756 PM.

***UPDATE***

Still plenty of cloud coverage visible in the satellite imagery, and expect the low clouds to extend well inland tomorrow morning as a trough will lift the marine layer. Look for morning drizzle in most of southeast LA County. The patch of clouds that contained some lightning activity mentioned in the previous short term discussion seems to be dissipating to our south and should not affect the sky this evening over our area.

It is still looking good for advisory strength winds beginning later Thursday evening in the western Santa Ynez Mountains, northern I-5 corridor, and Antelope Valley. Winds will increase in strength and coverage in Friday.

***From Previous Discussion***

A deep marine layer remains in place, however the inversion remains weak so clouds are generally focused across the inland valleys up against the south facing foothills as well as the Central Coast. Confidence remains low with regard to the sky coverage later tonight and Thursday as a trough approaches from the southwest. Satellite imagery shows some baroclinicity to it with even several lightning strikes near the low center earlier today. Models indicate significant weakening of the system as it continues it's trek towards either northern Baja or southern San Diego County so chances for any redevelopment are slim. Still, the low and mid level lifting associated with the low could generate some morning drizzle across southeast LA County. Many of the ensemble solutions suggest this as well.

Following the trough passage Thursday afternoon, increasing west to northwest winds are expected that will continue into Friday. In fact Friday has some of strongest winds this week with speeds up to 40 mph near and over the coast and up to 50 mph across the mountains and Antelope Valley. Expect there will be a need for wind advisories, possibly as early as late Thursday afternoon, but certainly by Friday.

Later Friday into early Saturday there is a 10-15% chance of light measurable rain across the interior mountains from far western LA County to Santa Barbara County as an inside slider trough brings some additional energy aloft as well a little bit of moisture.
Snow levels are at least 6000 feet so there's no threat of snow over the Grapevine, but there may be some light showers there and along the border with Kern County to around the Carrizo Plain in southeast SLO County. All that should end around sunrise Saturday leaving behind sunny skies in all areas with slightly warmer temperatures than Friday.

.LONG TERM (SUN-WED)...24/201 PM.

Sunday and Monday will be similarly nice days across the area with minimal stratus and warming temperatures. Monday will likely be the warmest day in this stretch with highs in the mid 80s in the valleys and upper 60s and 70s near the coast.

The rest of the week will be cooler with increasing low clouds and fog as well as onshore winds, particularly later in the week as another cold upper low drops out of the Gulf of Alaska.

AVIATION
25/0207Z.

At 0030Z at KLAX, the marine layer was 1400 feet deep. The top of the inversion was at 2300 feet with a temperature of 11 C.

High confidence in desert TAFs. Low to moderate confidence in remaining TAFs. Cigs will generally be high MVFR to VFR, except lower in some mountain/foothill areas. Much uncertainty of cig arrivals and dissipation, but expecting most TAF sites to see cigs at times from 12Z onward.

KLAX...Moderate confidence in TAF. There is a 20-30% chance of no cigs or cigs a category high than forecast during the period. Cigs appear likely after 10Z. No east wind component expected.

KBUR...Low to moderate confidence in TAF, due to uncertainty in arrival of cigs. There is a 20-30% chance of no cigs or cigs a category high than forecast during the period.

MARINE
24/229 PM.

In the Outer Waters, good confidence that winds will reach Small Craft Advisory (SCA) levels in the southern zone (PZZ676) this afternoon thru late tonight, with a 30% chance in the two northern zones, particularly around Point Conception. SCA conds are expected Thu morning thru Sun. There is a 50-70% chance of gales starting Thu evening thru Mon, with the highest chances for the southern zone (PZZ676).

For the Inner Waters N of Pt. Sal, moderate to high confidence in the forecast. SCA level winds are likely in the afternoon/evening hours Thu-Sun. There is a 50% chance of gales Fri afternoon into late Fri night.

In the Inner Waters S Pt Conception, moderate confidence. SCA conds are likely in the SBA Channel and the western portions south of Point Mugu during the afternoon/eve hours today and Thu. SCA conds are likely in the SBA Channel and portions of the southern inner waters during the afternoon and night hours Fri-Mon. There is a 50-60% chance of gales starting Fri morning into Sat.

LOX WATCHES/WARNINGS/ADVISORIES
CA...NONE.
PZ...Small Craft Advisory in effect from 9 AM Thursday to 3 PM PDT Friday for zones 645-670. (See LAXMWWLOX).
Gale Watch in effect from Friday afternoon through late Friday night for zones 645-655-670. (See LAXMWWLOX).
Small Craft Advisory in effect until 3 AM PDT Thursday for zones 650-655-676. (See LAXMWWLOX).
Gale Watch in effect from Friday morning through Saturday morning for zones 650-673. (See LAXMWWLOX).
Small Craft Advisory in effect from 9 AM Thursday to 9 AM PDT Friday for zone 673. (See LAXMWWLOX).
Gale Watch in effect from Thursday evening through Saturday morning for zone 676. (See LAXMWWLOX).

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