textproduct: Los Angeles

SYNOPSIS

05/219 PM.

Night through morning low clouds and fog will be common over coastal areas and the coastal valleys through at least this weekend, with clearing each afternoon. Hazardous heat will occur through this weekend over interior areas. Aside from a couple mountain showers possible on Sunday, dry conditions will prevail.

LONG TERM (SAT-TUE)

05/218 PM.

The pattern will remain similar through Sunday. Max temps will remain 4 to 8 degrees above normal, min temps will remain 3 to 6 degrees above normal and humidities will also be above normal. Heat Advisories and Extreme Heat Warnings have been extended into Sunday.

The western edge of a monsoonal moisture surge will bring slight chances (around 15%) for showers over mountains of Los Angeles and Ventura Counties into nearby deserts on Sunday.

The ridge is expected to begin to break down on Monday, continuing into the middle part of next week. This should lead to a cooling trend and an elimination of the need for heat products next week.

AVIATION

05/2346Z.

At 2223Z at KLAX, the marine layer was 1200 feet deep. The top of the inversion was at 2300 feet with a temperature of 26 C.

High confidence in VFR TAFs for desert airfields (KPMD & KWJF).

Low to moderate confidence in remaining TAFs. Timing of flight cat restrictions may be off +/- 3 hours, and CIG heights by +/- 200 ft.

KLAX...Low to moderate confidence in TAF. Arrival time of CIGs may be off +/- 3 hours and clearing times +/- 2 hours. CIGs likely to range 008-012 through early morning. No significant east wind component expected.

KBUR...Good confidence in TAF. There is only a 15% chance of BKN/OVC006-010 conditions 12Z-16Z.

MARINE

05/218 PM.

Winds and seas are expected to remain below Small Craft Advisory (SCA) criteria into this weekend, with the exception of northwest winds locally gusting to 20-25 knots in typically windy areas around and to the south of Point Conception each afternoon and evening.

Dense fog may affect portions of the coastal waters each night through morning into this weekend, especially across the waters north and west of Point Conception.

LOX WATCHES/WARNINGS/ADVISORIES

CA...Extreme Heat Warning in effect until 8 PM PDT Sunday for zones 38-377-381>383. (See LAXNPWLOX). Heat Advisory in effect until 8 PM PDT Sunday for zones 344-345-353-375-376-378>380. (See LAXNPWLOX). PZ...NONE.