textproduct: Los Angeles

SYNOPSIS

30/230 AM.

Night through morning low clouds will continue across the coasts and valleys. Some very light drizzle is possible each morning. Temperatures will remain well below normal through the middle of the week. Temperatures will then begin to warm by Thursday, with many valley locations warming into the 90s again by early next week.

LONG TERM (FRI-MON)

30/230 AM.

Friday will again start out gloomy with low clouds covering most of the csts and vlys. This due to the continued strong onshore flow and weak troffing aloft. The gradients relax just a skosh which should bring slightly better/faster clearing. At the upper levels hgts will rise about 4 dam as the upper trof weakens. Less onshore flow, earlier clearing and rising hgts will all mix together to bring 2 to 3 degrees of warming to most areas. The interior of SLO county will be the exception as warmer interior air will bring as much as 7 degrees of warming to that area.

Continued warming is on tap for Saturday as the troffing disappearsand an ill-defined weak flow pattern sets up with hgts up to 590 dam. Still quite a bit of onshore flow so there will be plenty of morning low clouds. Look for 1 to 3 degrees of warming across the csts and vlys, while the interior will warm 3 to 5 degrees.

Sunday will be very similar to Saturday both with respect to the synoptic pattern and the sensible weather.

On Monday Srn CA will be in between a weak ridge to the east and weak troffing to the NW. Hgts will remain near 590 dam. While there will still be mdt-stg onshore flow to the east the onshore push to north in the morning will be much weaker and possibly weakly offshore. This should reduce the amount of morning low clouds. Max temps may warm a degree or two as a result.

The onshore push to the east will generate gusty just under advisory level winds each afternoon.

AVIATION

30/0957Z.

At 0835Z at KLAX, the marine layer was 2500 ft deep. The top of the inversion was 6000 ft with a temperature of 13 C.

High confidence in VFR TAFs for KPMD and KWJF.

There is a 20% chance for brief IFR cigs at KPRB. Moderate confidence for all other TAFs. VFR conds may arrive up to 90 minutes later than fcst. Cig hgts could be off by +/- 300 ft.

KLAX...Moderate confidence in TAF. VFR conds could arrive as late at 2130Z with a 30 percent chc of SCT conds. There is a 30 percent chc of BKN015 cigs 10Z-16Z. High confidence in any easterly wind staying under 6 knots.

KBUR...Moderate confidence in TAF. VFR conds could arrive as late as 20Z.

MARINE

30/946 AM.

There is a 20-30% chance of Small Craft Advisory (SCA) conditions in the afternoon to night for the outer waters through Thursday with 60-70% chance Friday into the weekend.

Other than a 20-30% chance of SCA winds over the western Santa Barbara Channel each afternoon and evening today and again Thursday into the weekend.

High confidence in conditions staying under SCA for the rest of the waters through at least Thursday.

All waters will see short-period choppy seas through the period.

LOX WATCHES/WARNINGS/ADVISORIES

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