textproduct: Los Angeles

SYNOPSIS

11/300 AM.

Temperatures away from the coast will warm into the 80s and 90s today. 100 degree readings may occur locally in the warmest valleys and Antelope Valley. Coastal low clouds will develop each night, expanding into the valleys Tuesday as a cooling trend begins.

LONG TERM (THU-SUN)

11/300 AM.

The upper low will depart the area on Thursday. Sfc high pressure will build in from the north and north flow will set up with about 3 mb of of offshore flow developing from the north. There will also be a substantial decrease in the onshore push to the east. Look for a reduction in the amount of morning low clouds, esp along south facing beaches. The coasts and vlys will warm as a result but lingering cold air behind the departing trof will cool the interior.

Building high pressure and continued offshore flow from the north will greatly reduce or eliminate the low clouds on Friday. There will be a decent bump up in temps of 3 to 6 locally 8 degrees across the area.

Further warming Saturday with limited or no marine layer clouds will bring max temps into the 70s across the csts and 80s in the vlys or 3 to 6 degrees over normal.

Weak troffing will move into the area next Sunday. In addition there will be an increase in the onshore flow to the east. Max temps will likely fall a degree or 2 over most areas.

In addition the northerly gradients will likely bring advisory level wind gusts to the western portion of the SBA south coast late in the afternoons and evenings.

AVIATION

11/0902Z.

At 0837Z at KLAX, the marine layer was 900 feet deep. The top of the inversion was at 3600 feet with a temperature of 23 C.

High confidence in KWJF and KPMD TAFs.

Low to moderate confidence in remainder of TAFs. Timing of flight category changes may be off by 2 hours and one flight category at any point. There is a 40 percent chance that VFR conds prevail for KBUR/KVNY. There is a 20% chance of VLIFR conditions at KPRB in the 13Z-17Z time frame.

KLAX...Moderate confidence in TAF. There is a 20 percent chc of 4SM BR BKN004 conds 12Z-15Z. There is a 20 percent chc of BKN012 conds persisting through the afternoon. Any east wind component will be AOB 6kt.

KBUR...Moderate confidence in TAF. There is a 25 percent chc of 2SM BR OVC004 conds 13Z-16Z.

MARINE

11/306 AM.

Winds and seas will remain below Small Craft Advisory (SCA) levels overnight through Tuesday.

Wednesday night through the weekend, winds and seas will start to strengthen/build, with SCA winds across the outer waters starting late Wednesday night and Seas reaching steep and choppy SCA levels around Friday night. There is a 30-40% chance of SCA winds across the inner waters, with the highest chances each afternoon and evenings especially across the western portion of the Santa Barbara Channel. GALE Force winds will be possible across the outer waters as early as Thursday afternoon, with highest chances on Saturday into Sunday.

Dense fog may become more widespread each night to morning through Tuesday morning.

LOX WATCHES/WARNINGS/ADVISORIES

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