textproduct: Los Angeles

SYNOPSIS

27/759 PM.

A cooling trend is expected across Southwest California starting Saturday and continuing into early next week. Fog is likely over coastal areas through Sunday, with patchy dense fog possible tonight into Saturday morning.

LONG TERM (TUE-FRI)

27/157 PM.

Monday's upper low passage will pass to the north. It will sweep in some upslope clouds against the north slopes. Onshore flow and falling hgts will allow for some morning stratus formation across the LA coast and the Central Coast. There will be enough cold air with this system to bring gusty NW winds to the coasts and the mtns. The cool air advection will also lower max temps 3 to 6 degrees for the csts/vlys but 5 to 10 degrees across the far interior.

Monday's cool air advection and developing offshore flow from the north will eliminate the low cloud threat on Tuesday and Wednesday. Mostly sunny skies, rising hgts and the offshore push will all team up and bring 2 to 3 degrees of warming Tuesday and an additional 1 to 2 degrees on Wednesday. Wednesday's max temps will mostly be in the 70s across the csts (away from the beaches) and vlys. These max temps are 3 to 6 degrees over normal.

Cooler and breezier on Thursday as another trof barrels through the northern half of the state. Advisory level winds will be possible for interior mountains.

Both AI-mdls are essentially dry through Sunday the 14th of March.

AVIATION

28/0547Z.

At 0519Z at KLAX, there was no marine layer depth. There was a surface based inversion topped at 2700 ft with a temperature of 27 C.

High confidence in 06Z TAFs. VFR conditions expected, with local MVFR vsbys due to HZ at KLGB Saturday morning. There is a 20 percent chance of VLIFR to LIFR conds at KPRB and KLGB from 12Z-18Z, and a 10 percent chance reaching KLAX and KSMO.

KLAX...Good confidence in VFR TAF. There is a 10 percent chance of VLIFR/LIFR conditions at KLAX between 12Z and 17Z. Any east wind component will remain less than 7 knots.

KBUR...High confidence in VFR TAF.

MARINE

27/804 PM.

High confidence in seas remaining relatively small through at least Tuesday. Winds are likely to remain below SCA (Small Craft Advisory) levels through Saturday, with a 30% chance of SCA winds over the outer waters Saturday evening. By Sunday, hazardous winds will increase in coverage and strength, with more certainty in impacts for mariners across the SB Channel by Sunday night. By Monday afternoon/eve, hazardous winds will become very widespread covering the majority of our coastal waters. There is a moderate chance (30-40%) of GALES Tuesday afternoon/eve through Friday morning, focused across the Outer Waters.

LOX WATCHES/WARNINGS/ADVISORIES

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