03/818 PM.
Significant warming is expected through Sunday as gusty Santa Ana winds continue over Los Angeles and Ventura Counties. Winds will weaken slightly, but remain moderate to locally strong into Saturday morning. A cooling trend will begin Monday with temperatures back to near normal around mid week. There is a chance of rain this coming Wednesday night into Thursday.
(Fri-Mon), 03/814 PM.
Moderate to strong Santa Ana winds affected much of the area today, strongest over the wind-prone locations in Ventura and LA Counties including the San Gabriel Mountains, the western Santa Monicas, the Santa Susana mountains, and the corridor through Camarillo to the coast. The highest gusts were in the mountains, peaking between 55 and 60 mph, with a few standouts showing gusts of 65 to 75 mph (Magic Mtn Truck Trail, Brown's Canyon in the Santa Susanas, and others). Many gusts between 35 to 50 mph affected the valleys to coastal areas of Ventura and LA Counties, and further north in the San Luis Obispo mountains, coastal hills and some beaches.
Winds will decrease some overnight (except over the ridges) before increasing again in the morning around the time of sunrise. The wind speeds will drop down a notch compared to this morning, with speeds generally 25 to 35 mph with gusts to 50 mph. Isolated gusts to 60 mph will be possible in the most favored mountain locations. The winds will begin to decrease some Saturday afternoon through the early evening, then will decrease more substantially in the late evening into Sunday morning. Models depict a good onshore push, initially along the coast by around 11 AM-noon, then progressing inland through the remainder of the afternoon.
As for temperatures, the hottest day of the short term will be Saturday, under weakening cold air advection and high pressure building aloft. Expect highs in the 80s from the coast through all of the valleys, and around 80 degrees over the far interior. On Sunday the sea breeze should result in several degrees of cooling along the coast and in the coastal valleys, while further inland the interior valleys and deserts may see a degree or two of warming.
Looking into Monday, the cooling trend that began on Sunday will continue, although highs will still be a few degrees above seasonal normals. Models are indicating low clouds and fog over the coastal areas by Monday morning.
(Tue-Fri), 03/827 PM.
After the slight cool down early in the week, temperatures are expected to level off Tuesday and Wednesday at around 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 each night to morning period.
Models continue to indicate at least a 60% chance of rain area- wide late Wednesday night into Thursday. A majority of the solutions are showing around one third to half an inch of rain over Ventura and LA Counties, with totals decreasing further north over Santa Barbara County (up to 0.25 inch) and San Luis Obispo County (0.15 inch or less). There are some models delaying the rain until Friday or Saturday, but lower confidence in these solutions. Otherwise, expect cooler daytime temperatures in the 70s Thursday through Saturday.
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.
03/716 PM.
For the Outer Waters, moderate to high confidence in current forecast. Through Sunday, high confidence in winds and seas remaining below Small Craft Advisory (SCA) levels. For Monday and Tuesday, there is a 60-70% chance of SCA level winds across all the Outer Waters. On Wednesday, there is a 60-70% 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. Through Sunday, high confidence in winds and seas remaining below SCA levels. For Monday through Wednesday, there is a 50-60% chance of SCA level winds in the afternoon and evening hours.
For the Inner Waters south of Point Conception, moderate confidence in current forecast. Through Saturday, there is a 60-80% chance of SCA level northeast winds from Ventura southward to Santa Monica, with a 30% chance of Gale Force gusts to 35 kt between Point Mugu to Ventura. There is also a 50-60% chance of SCA winds across the San Pedro Channel. On Sunday, high confidence in winds and seas remaining below SCA levels. For Monday through Wednesday, there is a 40-60% chance of SCA level winds, especially on Tuesday and Wednesday. The stronger winds are expected to be across the western sections of the southern Inner Waters.
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).
