29/310 AM.
Hot and muggy conditions will linger in some areas through Saturday, with widespread improvement by Sunday. More warm, tropical moisture could return Tuesday through Thursday. Marine layer clouds will gradually redevelop, and increase in coverage Sunday into early this coming week.
(tdy-Mon), 29/833 AM.
***UPDATE***
The cooling trend is here; current temperatures compared to yesterday's temperatures at the same time (24 hour temp change) are down by at least 3 to 7 degrees almost everywhere. Even with some cooling, temperatures today will remain warm (6-10 degrees above normal) and humid for portions of the area. Thus the Heat Advisory remains in effect for the coasts and valleys of Ventura and Los Angeles Counties as well as the Santa Barbara South Coast through 8 pm tonight.
Last night winds across southwestern Santa Barbara County gusted to 30 to 40 mph. Tonight both surface pressure gradients and high resolution models indicate an increase in wind strength, thus 40 to 50 mph gusts are expected this evening into night for the area, and a Wind Advisory has been issued.
***From Previous Discussion***
Southwest California is finally beginning to return to more normal temperatures, and humidities will be lowering as well, though it may take until Sunday to really notice the difference. The source of the tropical moisture is in the process of moving east but there's still some left over moisture off the coast that will take most of the day to scoot east. The good news is that onshore flow has already started to increase and most areas will experience anywhere from 3 to 8 degrees of cooling today, the highest being along the Central Coast where a shallow marine layer is beginning to re-establish and there will likely be some dense fog moving onshore this morning.
The cooling trend will continue Sunday and Monday with most areas firmly back to normal or even locally below normal with a deepening marine layer that may even reach some of the coastal valleys.
Increasing Sundowner winds are expected this evening across southwest Santa Barbara County with winds gusting up to 50 mph.
(Tue-Fri), 29/346 AM.
Uncertainty remains in the 4-7 day forecast as there are still some solutions favoring a return to a more tropical pattern next week and beyond. However, more of the ensemble solutions are leaning toward a relatively normal weather pattern through mid week with a slow warming trend Wed into next weekend that could bring 90 degree temps back to Downtown LA and around 100-105 in the warmer valleys.
29/0525z.
At 06Z at KLAX, no marine layer was present, nor inversion.
Overall, moderate confidence TAF Package. Low confidence in any marine layer clouds forming tonight, highest chances would be for KSBP and KSMX. There is a 60% chance of VFR conditions through the period for KSMX.
KLAX, High confidence in TAF. SCT to BKN cigs above 10KFT are possible at times through the period, and the east wind component is expected to stay 6 kt or lower.
KBUR, High confidence in TAF. SCT to BKN cigs above 10KFT are possible at times.
29/748 AM.
Through this weekend, high confidence in Small Craft Advisory winds and choppy seas for the outer waters. These hazardous conditions will reach into the nearshore waters along the Central Coast and into the Santa Barbara Channel at times (especially during the afternoon/eve hours). Local gusts may approach 35 kt near Point Conception this evening. For next week, most waters are likely to fall below SCA levels Monday and Tuesday. Increasing chances for SCA conditions later in the week, highest on Thursday afternoon through Friday.
Ca, Heat Advisory in effect until 8 PM PDT this evening for zones 88-349-350-354>358-362-366>375-548. (See LAXNPWLOX). Wind Advisory in effect from 6 PM this evening to 6 AM PDT Sunday for zones 349-351. (See LAXNPWLOX). PZ, Small Craft Advisory in effect until 3 AM PDT Sunday for zone 645. (See LAXMWWLOX). Small Craft Advisory in effect from 1 PM this afternoon to 3 AM PDT Sunday for zone 650. (See LAXMWWLOX). Small Craft Advisory in effect until 3 AM PDT Monday for zones 670-673-676. (See LAXMWWLOX).
