textproduct: Los Angeles

SYNOPSIS

11/128 AM.

A cooling trend will continue through Thursday, with cooler than normal temperatures expected across the area into the weekend. There is a chance of mountain and occasional lower elevation convection through at least Wednesday night. More robust marine layer cloud coverage is likely this week, however, higher clouds may disrupt the formation of the marine layer at times.

LONG TERM (SAT-TUE)

11/215 PM.

Good agreement with all of the medium range mdls, which show broad troffing with dry SW flow over the state. Hgts do climb through the extended period as the impressively large upper high expands back into our area from the southeast and nudges hgts up from 586 dam on early Saturday to 592 dam for Mon and Tue. At the sfc the mdt to stg onshore flow to the east will continue but the onshore push to the north will weaken substantially.

The weather not be very impactful. There will be plenty of night through morning low clouds and fog across the csts. The vlys will see less and less stratus and marine influence as the north push decreases and the hgts increase (smooshing the marine layer to under 1000 ft).

Gusty but still sub-advisory levels winds will continue across the Antelope Vly.

Temps will begin to warm on Saturday . Look for 2 to 5 degrees of warming on Saturday followed by 1 to 3 degrees on Sunday. The vlys will see the greatest amount of warming as the marine influence wanes. Despite the 2 days of warming, Sunday's max temps will remain 4 to 8 degrees blo normal. Monday's max temps will greatly resemble Sunday's. Minimal change into Tuesday.

AVIATION

11/1723Z.

At 1642Z at KLAX, the marine layer was 1000 feet deep. The top of the inversion was at 2000 feet with a temperature of 22 C.

Moderate confidence in TAFs. Timing of flight cat changes may be off +/- 2 hours and CIG heights +/- 200 ft. There is a 15% chance of -TSRA at KPMD & KWJF through 12/03Z. 5% chance of -TSRA at KOXR/KCMA/KVNY through 12/03Z.

KLAX...Fair confidence in the TAF. There is a 5% chance of -TSRA through 22/03Z. Low confidence in arrival/departure of IFR CIGs. No significant east wind component expected.

KBUR...Moderate confidence in TAF. There is a 5% chance of -TSRA through 11/03Z. There is a 40% chance of IFR CIGs 22/10-15Z.

MARINE

11/216 PM.

High confidence that conditions will remain below Small Craft Advisory (SCA) across all of the southwestern California coastal waters through at least Friday night. Patchy dense fog are possible on the Central Coast each morning. There is also a 5-10% chance of a thunderstorm over the coastal waters through Wednesday.

LOX WATCHES/WARNINGS/ADVISORIES

CA...Coastal Flood Advisory in effect until midnight PDT Wednesday night for zones 349-350-354-362-366. (See LAXCFWLOX). PZ...NONE.