Swell Matrix

Area Forecast Discussion

National Weather Service Los Angeles/Oxnard Ca

712 pm PDT Fri apr 3 2026

Synopsis

03/1149 AM.

Significant warming is expected today through Sunday as gusty Santa Ana winds return. Winds will be strongest today and Saturday across Los Angeles and Ventura Counties. A cooling trend will begin Monday with temperatures back to near normal around mid week. There is a chance of rain next Thursday.

Short Term

(Fri-Mon), 03/1228 PM.

A typical Santa Ana wind day across LA/Ventura coast and valleys with gusts between 25 and 50 mph and temperatures in the 70s and lower 80s. And per usual with Santa Anas winds will drop off later this afternoon and evening, then return again later tonight and Saturday. Tomorrow's winds will be gusty but generally 5-15 mph lighter than today as upper support weakens. Will hold off with any wind advisories for tomorrow as the decrease in winds may be enough to keep most areas out of advisories. At most it would be very low end advisories in fewer areas.

Main thing tomorrow is temperatures should jump up several degrees in all areas due to weakening cold air advection and high pressure aloft building over California. Expecting highs tomorrow to be 5-10 degrees warmer than today in all areas, with some warmer valleys reaching the lower 90s and coastal areas in the upper 70s and 80s.

A slow cooling trend will begin Sunday and continue into next week, though high pressure aloft will hang around and keep highs at least a few degrees above normal for most areas through Monday. May see some low clouds and fog returning to coastal areas by Monday as light onshore flow returns.

Long Term

(Tue-Fri), 03/1225 PM.

After the slight cool down early in the week, temperatures are expected to level off Tue/Wed at 4-8 degrees above normal. Skies will be mostly clear, except light to moderate onshore flow will create areas of low clouds and fog near the coast.

Models continue to indicate at least a 60% chance of rain area- wide late Wednesday night or Thursday. A majority of the solutions are still favoring around a half inch, but there is still around 20% of solutions showing a inch or slightly more. There are also some much slower solutions that start the rain as late as Friday and linger into next weekend.

Aviation

04/0211z.

At 2215Z at KLAX, there was no marine layer. There was a surface based inversion with a top of 800 feet at 22 C.

High confidence in VFR conditions through the period with lingering SCT-BKN200. Expecting a lull in northeasterly winds tonight but will increase again after 08Z, especially for KOXR, KCMA, KBUR and KVNY. Light to moderate LLWS and wind shear will be likely across the foothills and mountains.

KLAX, High confidence in 00Z TAF as VFR conditions are expected through the period. There is a 10% chance of an easterly wind component near 8 knots 13Z-17Z Saturday.

KBUR, High confidence in 00Z TAF as VFR conditions are expected through the period. Ocnl light LLWS and turbulence around the airfield through 19Z.

Marine

03/209 PM.

For the Outer Waters, moderate to high confidence in current forecast. Today through Sunday, high confidence in winds and seas remaining below Small Craft Advisory (SCA) levels. For Monday through Tuesday, there is a 60-80% chance of SCA level winds across all the Outer Waters. On Wednesday, there is a 60-80% chance of SCA level winds across PZZ673/676, but only a 20-30% chance of SCA level winds across PZZ670.

For the Inner Waters north of Point Sal, moderate to high confidence in current forecast. Today through Sunday, high confidence in winds and seas remaining below SCA levels. For Monday through Wednesday, there is a 50-70% chance of SCA level winds in the afternoon and evening hours.

For the Inner Waters south of Point Conception, moderate to high confidence in current forecast. Today through Saturday, there is a 60-80% chance of SCA level northeast winds from Ventura southward to Santa Monica. On Sunday, high confidence in winds and seas remaining below SCA levels. For Monday through Wednesday, there is a 50-70% chance of SCA level winds, especially across western sections of the southern Inner Waters.

Watches, Warnings, Advisories

Ca, Wind Advisory remains in effect until 3 PM PDT Saturday for zones 88-354-355-358-371-372-374-380. (See LAXNPWLOX). Wind Advisory in effect until 3 PM PDT Saturday for zones 369-375-379. (See LAXNPWLOX). PZ, Small Craft Advisory in effect until 3 PM PDT Saturday for zones 650-655. (See LAXMWWLOX).

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