textproduct: Los Angeles

SYNOPSIS

27/504 PM.

Temperatures will remain above normal through Monday, especially inland of the beaches, warmest over the weekend. Dense fog will affect coastal areas each day through Saturday or Sunday. Much cooler conditions expected Tuesday through the end of the week, along with gusty winds and a chance of rain at times.

LONG TERM (TUE-FRI)

27/807 PM.

For the extended, latest models continue to sing the same song. A powerful upper low will move across the Pacific Northwest Tuesday through Friday. As this occurs, our area will experience a noticeable cool down through Thursday as thickness lower and onshore flow increases. From the Tuesday through Thursday time frame, high temperatures will be hovering around seasonal normals. On Friday, there will some slight warming across the area as the previously mentioned low moves inland.

As for rain chances, models continue to scale back on the chances as well as the amounts. So for the Tuesday through Thursday time frame, chance POPs look like the winner for now. Latest QPF numbers indicate rainfall totals, if any, will be under 0.25 inches. Based on current ensembles, these reduced numbers look good as they indicate little chance of amounts greater than 0.50 inches and 30-50% chance of amounts between 0.10 and 0.50 inches.

As for winds, the increasing onshore flow will continue to generate gusty southwesterly winds across interior sections. There will be a chance of advisory-level gusts across these areas through next week. So, the winds will need to be watched closely.

AVIATION

28/0548Z.

At 0506Z at KLAX, there was a 900 ft marine layer. The top of the inversion was at 2000 feet with a temperature of 20 C.

High confidence in TAFs for KPRB, KPMD, KWJF, KBUR, and KVNY. There is a 10-20% chance of MVFR vis at KBUR and KVNY through 16Z Sat.

Low to moderate confidence in remaining TAFs. Timing of flight cat changes could be off by +/- 2 hours and off by one flight cat at any time. There is a 20% chance of LIFR conds down to 1/4SM FG at any of the coastal airfields.

KLAX...Low to moderate confidence in TAF. There is a 10-20% chance of VLIFR conditions down to 1/4SM FG through 17Z Sat, and a 30% chance of 2-4SM BR BKN004-008 conds after 06Z Sun. No significant east wind component expected.

KBUR...High confidence in the TAF. There is a 10-20% chance of 3-5SM BR/HZ through 16Z Sat.

MARINE

27/807 PM.

High confidence in winds and seas staying under Small Craft Advisory (SCA) levels through at least Monday, except for a 30-50% chance of low-end SCA winds beyond 20 miles from the Central Coast Saturday Night through Sunday night.

Moderate risk of dense fog with visibility under one mile will continue through at least Saturday.

There is a growing risk for widespread strong SCA or low-end Gale Force winds over most coastal waters (including nearshore and the Santa Barbara Channel) late Thursday through Friday of next week.

LOX WATCHES/WARNINGS/ADVISORIES

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