textproduct: Los Angeles

SYNOPSIS

12/704 PM.

Night through morning low clouds and patchy fog will affect the coasts and lower valleys into next week. Max temperatures will warm slightly tomorrow but remain below normal through Monday except for far interior valleys. Continued cooling will become more noticeable across the entire area through middle of next week where valley highs are only expected to be in the 80s.

LONG TERM (WED-SAT)

12/246 PM.

The strong onshore flow will continue through Thursday, and may even become a mb stronger, before starting to weaken thursday night through Friday. Conditions on Wednesday and Thursday will be very similar, with temps not changing much from Tuesday. The night through morning low clouds and fog will continue unabated and the beaches will continue to struggle with clearing.

The strong onshore flow will continue to bring gusty (likely advisory level) winds to some of the mountains as well as the western portions of the Antelope Valley and foothills. Additionally, the gusty winds across the mountains and interior along with fairly warm temperatures and fairly low humidities through Tuesday, will bring an uptick in fire weather danger.

Thursday evening, both the GFS and EC and show a significant increase in moisture at 700 mb and above advecting in from the SSE. Additionally, a portion of ensemble members from the GFS and EC are showing PWATs of 0.8 to 1.1 at KPMD, starting Thursday evening through Sunday. Skies may turn partly cloudy. As of now, there is a 5 to 10 percent chance for high based monsoonal thunderstorms during the afternoon and evening hours Thursday through Sunday.

AVIATION

13/0008Z.

At 2310Z at KLAX, the marine layer was 1500 ft deep. The top of the inversion was at 3700 feet with a max temperature of 25 C.

High confidence in VFR conditions for KWJF and KPMD.

Moderate confidence in remaining TAFs. Time of the return of cigs this evening for sites may be off by +/- 2 hours, and heights may be off by 1 flight category at times. Dense fog with VSBY 1/4SM-1/2SM will be possible (20% chance) from 08Z-15Z at KSBP, KSMX, and KSBA. At KPRB, there is a 15% chance for LIFR to IFR conds from 12Z to 17Z.

KLAX...Moderate confidence in TAF. Clearing and arrival times for cigs may be off by +/- 2 hours, and heights may range from 400-2000 ft overnight. No significant east wind component expected.

KBUR...Moderate confidence in TAF. Clearing and arrival times for cigs may be off by +/- 2 hours, and heights may range from 400-1200 ft overnight.

MARINE

12/647 PM.

Sunday afternoon and evening, localized Small Craft Advisory (SCA) W to NW winds may impact the waters around Point Conception south to the western Channel Islands, and nearshore from Point Mugu to Pacific Palisades and through the San Pedro Channel. Otherwise, relatively benign conditions will continue through at least the middle of next week.

Night to morning patchy dense fog is possible through at least Monday.

LOX WATCHES/WARNINGS/ADVISORIES

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