textproduct: Los Angeles

SYNOPSIS

13/341 AM.

Temperatures will largely be below normal today, with low clouds widespread during the morning. Chances are high for widespread sunshine by the afternoon. Gusty winds are expected times across the mountains and deserts. Slight warming is expected Thursday and Friday, and above normal temperatures are possible early next week.

LONG TERM (SAT-TUE)

13/340 AM.

Generally benign weather is expected through the weekend, however there is some uncertainty with regards to the exact synoptic pattern. A passing trough has the chance to bring gusty winds and cooler than normal temperatures to the area over the weekend. Very warm conditions will become possible early next week, particularly for the interior. At this point, ensemble surface pressure gradients indicate that offshore flow will likely not be strong enough to completely deter marine layer clouds. Thus temperatures at the beaches, and perhaps some inland coastal areas, may stay in the 60s. Monday and Tuesday, there is a chance to see a 30+ degree difference between daytime highs at the beaches compared to the deserts, rather like what was observed the past couple days.

AVIATION

13/0913Z.

At 0702Z at KLAX, the marine layer was 2700 ft deep. The top of the inversion was at 4500 ft with a temperature of 19 C.

High confidence in VFR conditions at KPMD & KWJF through at least Tuesday. High confidence in ceilings at all other airports tonight into Tuesday, with MVFR most common. Brief IFR ceilings are possible almost everywhere 10-15Z.

KLAX...Moderate confidence through 18Z Tuesday in ceiling category and timing (plus or minus 3 hours). Low confidence on timing of any clearing. High confidence in any east winds staying under 8 knots.

KBUR...Moderate confidence in ceiling category and timing (plus or minus 3 hours). High confidence in any east winds staying under 8 knots.

MARINE

13/215 AM.

For the outer waters from the Central Coast to San Nicolas Island, high confidence in Small Craft Advisory (SCA) winds and seas developing Wednesday and lasting through at least Thursday Night, except for a a likely brief break Wednesday 9am to 2pm. Moderate risk of Gale Force winds as early as Friday and peaking over the weekend, with large 10+ foot steep seas.

SCY conditions likely for the nearshore Central Coast waters each afternoon and evening through Thursday, with stronger winds and building seas Friday through the weekend.

Winds will stay under SCY for all other waters through at least Thursday, with a moderate risk of SCY conditions by the weekend.

Over the weekend...The combination of high winds and seas could result in hazardous surfing conditions and minor coastal flooding especially across more unprotected west-facing beaches such as along the Ventura coastline. Stay tuned for future updates.

LOX WATCHES/WARNINGS/ADVISORIES

CA...NONE. PZ...Small Craft Advisory in effect from 3 PM this afternoon to 9 PM PDT this evening for zone 645. (See LAXMWWLOX). Small Craft Advisory in effect from 9 AM this morning to 9 AM PDT Thursday for zone 670. (See LAXMWWLOX). Small Craft Advisory in effect from 3 PM this afternoon to 9 AM PDT Thursday for zone 673. (See LAXMWWLOX). Small Craft Advisory in effect from 6 PM this evening to 9 AM PDT Thursday for zone 676. (See LAXMWWLOX).