textproduct: Los Angeles

SYNOPSIS

01/101 PM.

Onshore flow will continue to bring low clouds to the coasts and coastal valleys each night and morning. However, increasing pressure will mean weaker onshore flow, decreasing clouds in valleys further inland from the coast, and gradually warming temperatures. Expect a return to near-normal temperatures by early next week with 90s for many valley locations by that time.

LONG TERM (SUN-WED)

01/100 PM.

Pressure heights over southern CA will generally rise throughout the extended period, maintaining relatively weaker onshore flow and warming temperatures. The thinning marine layer will be quicker to recede off the coast, meaning increased daytime warming in areas further from the coast. Come early next week we will likely observe widespread near-normal temperatures and more widespread valley locations reaching 90 or more degrees. While the Antelope and San Luis Obispo Valleys will have already warmed into the 90 plus degrees range by late week, probabilities suggest that valleys elsewhere will most likely not observe similar warmth until next Tuesday. During the weekend timeframe, southern CA will be between an area of low pressure to the northwest and a ridge of high pressure to the southeast. After that, ensembles show different scenarios regarding our upper-level pattern heading into the middle of next week. There is also the potential for some breezy sundowner winds early next week in the Santa Barbara area, although speeds don't look to be very impactful at this time.

AVIATION

02/0604Z.

At 0512Z at KLAX, the marine layer was 1600 ft deep. The top of the inversion was 4700 feet with a temperature of 18 C.

High confidence in TAFs for KPMD and KWJF.

Moderate confidence for all other sites. VFR conds may arrive +/- 90 minutes from fcst time. Cigs may be off by +/- 400 ft.

KLAX...Moderate confidence in TAF. There is a 20 percent chc of bkn008 conds 11Z-15Z. VFR conds could arrive as early as 1930Z or as late as 2100Z. No significant easterly wind component is expected.

KBUR...Moderate confidence in TAF. There is a 25 percent chc of bkn008 conds 11Z-15Z. VFR conds could arrive as early as 20Z

MARINE

01/827 PM.

For the Outer Waters, moderate to high confidence in current forecast. Tonight through Friday, high confidence in winds and seas remaining below Small Craft Advisory (SCA) levels. For Saturday through Monday, there is a 50-70% chance of SCA level winds.

For the Inner Water north of Point Sal, high confidence in current forecast. Tonight through Sunday, winds and seas are expected to remain below SCA levels. On Monday, there is a 20% 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. Tonight through Monday, high confidence in winds and seas remaining below SCA levels for most of the southern Inner Waters. The only exception will be the western half of the Santa Barbara Channel where there is a 30-50% chance of SCA level winds Thursday through Monday, mainly during the late afternoon and evening hours.

LOX WATCHES/WARNINGS/ADVISORIES

CA...NONE. PZ...NONE.