textproduct: Los Angeles

SYNOPSIS

12/1256 PM.

Several degrees of cooling are expected through Wednesday as an upper low moves through northern California. Low clouds and fog will move into the coastal valleys with clouds lingering at some coastal areas through today. Gusty winds are expected times across the mountains and deserts. Slight warming is expected Thursday into Friday.

LONG TERM (SAT-TUE)

12/1256 PM.

Below normal confidence this weekend into early next week as a sharp trough (for May) is poised to pass nearby. An inland track (50 percent chance) would lead to near normal temperatures with breezy winds nearing advisory levels for some interior areas such as the mountains near the I-5 corridor and southwest Santa Barbara County into Saturday or Sunday with the potential for offshore winds with decent warming and drying trends into Monday. A close pass (30 percent chance) would lead to gusty and probably advisory northerly winds for the interior and mostly below normal temperatures.

AVIATION

13/0014Z.

At 00Z at KLAX, the marine layer was 2900 ft deep. The top of the inversion was at 5600 ft with a temperature of 19 Celsius.

High confidence in VFR conditions at KPMD & KWJF through at least Tuesday. Moderate confidence that the current gusty winds will improve by 04Z but will remain steady through the night.

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

12/148 PM.

Winds and seas will remain below Small Craft Advisory (SCA) levels through Wednesday morning.

SCA conditions (winds and seas) are expected to develop across the northern Outer Waters Wednesday afternoon, expanding in coverage to include all Outer Waters by Wednesday night.

These hazardous conditions will persist into the weekend reaching portions of inner waters (along the Central Coast and SB Channel) at times.

GALE Force winds will be possible across the outer waters as early as Thursday afternoon, with highest (30-50 percent) chances on Saturday into Sunday.

Seas will continue to build into the weekend peaking 10-15 ft across the outer waters.

(For this 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...Wind Advisory in effect until 10 PM PDT this evening for zones 381-383. (See LAXNPWLOX). PZ...Small Craft Advisory in effect from 3 PM to 9 PM PDT Wednesday for zone 645. (See LAXMWWLOX). Small Craft Advisory in effect from 9 AM Wednesday to 9 AM PDT Thursday for zone 670. (See LAXMWWLOX). Small Craft Advisory in effect from 3 PM Wednesday to 9 AM PDT Thursday for zone 673. (See LAXMWWLOX). Small Craft Advisory in effect from 6 PM Wednesday to 9 AM PDT Thursday for zone 676. (See LAXMWWLOX).