27/1206 PM.
A low pressure system will bring cool temperatures and a chance of drizzle or light showers, as well as gusty winds to the beaches, mountains, and deserts through Thursday. A warming trend will begin Friday and continue into next week.
(Wed-Sat), 27/753 PM.
Latest satellite and surface observations indicate skies ranging from mostly cloudy to clear. Some showers continue to be observed across interior sections of the region. Southwest to northwest winds, gusting 25-35 MPH, are observed across many areas.
For the short term, main focus will be on the upper low which will continue to "wobble" over Central California through Thursday night, before moving to the east on Friday and Saturday. With this upper low, there will be a couple of impulses rotating around the low which will bring showers to the area. The first impulse is currently impacting interior sections, but the shower activity associated with this impulse will continue to dimish through the evening. The second impulse will rotate around the low Thursday and Thursday night, bringing a better shot of widespread showers to the area. At this time, the highest chances for rain on Thursday will be across San Luis Obispo and Santa Barbara counties, but even LA county could see some light showers later in the day on Thursday. With respect to thunderstorm chances, the threat looks to be less than 15% tonight through Thursday night, but this potential will need to be watched closely.
When all is said and done Thursday night, rainfall totals across most areas are expected to be 0.25" or less. However, the northwest corner of San Luis Obispo county could see around 0.75 inch rain totals through Thursday night. Given the light amounts, no significant hydrologic issues are expected.
Once the upper low moves east into the Great Basin, a flat ridge will build over the area. This will bring a noticeable warming trend to the area. Temperatures on Friday will climb into the mid 60s to mid 70s across the region. On Saturday, the warming trend will continue with high temperatures generally topping out in the 70s to mid 80s. Additionally, there will be some increase in northwesterly winds on Friday and Saturday, especially across the Santa Ynez Range and I-5 Corridor. At this time, any advisory level gusts are expected to remain rather localized.
(Sun-Wed), 27/131 PM.
Neutral or slight offshore flow will continue at least into early next week while a ridge of high pressure starts to build along the West coast. Low 90s are likely across the warmer valleys Sunday or Monday while coastal areas more than 5-10 degrees inland (including Downtown LA) will be in the upper 70s to mid 80s, generally 4-8 degrees above normal. Any offshore flow likely won't have much impact at the coast where highs will be near normal, mostly in the mid 60s to low 70s. And roughly a 60-80 percent chance of marine layer stratus each morning within 10 miles of the coast.
Slight warming into Tuesday then leveling off the rest of the week as high pressure aloft continues.
28/0126z.
At 00Z at KLAX, there was a 1500 ft deep moist layer.
Overall, moderate confidence in 00Z TAF Package. Lower confidence in timing of rain and cigs, with best chances for rain for KPRB, KSBP, KSMX, and KSBA. Sites may fluctuate between VFR and MVFR cigs.
KLAX, Moderate confidence in TAF. MVFR conditions are possible at times overnight, with lower confidence in timing. Lower confidence in timing of rain chances. Any east wind component will be 6kt or less, best chances from 13 to 16Z.
KBUR, Moderate confidence in TAF.MVFR conditions are possible at times overnight, with lower confidence in timing. Lower confidence in timing of rain chances.
27/839 PM.
Winds have fallen below Small Craft Advisory (SCA) levels this evening, but expecting SCA level seas to linger over the outer waters overnight, falling below SCA levels Thursday morning. Conditions will remain below advisory levels on Thursday. More showers will pass through the coastal waters tonight into Thursday, with activity peaking Thursday morning. The best chance for showers (70-90%) will be north and west of the Channel Islands. Widespread SCA conditions will return Friday afternoon through the weekend, and SCA winds could reach into the inner waters at times. There is also a 30-40% chance for GALE force winds on Saturday through Saturday night.
Ca, High Surf Advisory in effect until 11 PM PDT this evening for zones 340-346. (See LAXCFWLOX). PZ, Small Craft Advisory in effect until 10 PM PDT this evening for zone 650. (See LAXMWWLOX). Small Craft Advisory in effect until 8 AM PDT Thursday for zones 670-673-676. (See LAXMWWLOX).
