textproduct: Los Angeles

SYNOPSIS

24/1200 AM.

Hotter than normal conditions will continue for the foreseeable future, generally hottest through Sunday. The hot daytime and warm night conditions will bring elevated risks for heat illness. Gusty north winds will affect some areas through Friday.

LONG TERM (MON-THU)

24/143 AM.

The large area of high pressure will remain the dominant weather feature through next week. The core of the high will shift a little to the east Monday through Wednesday and bring a touch of relief to the heat, but only by a few degrees. Coastal areas will see the most noticeable drop as onshore pressure gradients strengthen some and low clouds and fog will likely be more expansive than it has been. The majority of the ensemble solutions, especially with the EC, show this relief being short- lived as the high build back towards the west after Wednesday. Some projections so 500 millibar heights close to 600 decameters by Saturday of next week which is about as strong as it gets.The one saving grace is that the majority of projections also show a sharp drying trend at the same time, with precipitable water readings dropping from 1.5 inches today to under 1.0 inches by Wednesday. This will certainly help with the muggy feelings. Stay tuned for more details on this potential heat-back-up.

AVIATION

24/1001Z.

At 10Z over KLAX, the marine layer was 1000 ft deep. The top of the inversion was 4000 ft with a temperature of 29 Celsius.

High confidence in VFR conditions through tonight at KBUR KVNY KPMD KWJF. Chances for LIFR/IFR conditions today and tonight at KPRB (10%) KSBP (30%) KSMX (100%) KSBA (10%) KOXR (20%) KCMA (10%) KSMO (30%) KLAX (40%) KLGB (60%). Winds will be similar to last 24 hours.

KLAX...40% chance of BKN005-008 through 16Z today, and 10-16Z Saturday. High confidence in any east winds staying under 6 knots.

KBUR...High confidence in VFR conditions through at least Saturday with typical winds.

MARINE

24/127 AM.

High confidence in persistently strong NW winds from the Central Coast to San Nicolas Island through at least Tuesday Night. Gusts of 30-40 knots will be common each afternoon and night, bordering between strong Small Craft Advisory (SCA) and low-end Gale Warnings. These winds will also affect the western Santa Barbara Channel each night, and may cover enough of the channel to need a SCA. With these winds, widespread choppy or steep seas is likely. In addition, patches of dense fog are possible anywhere through Sunday or Monday, especially off the Central Coast.

BEACHES

23/624 PM.

A long period, southern hemisphere swell will arrive early Saturday and will add to the continuing swell from Hurricane Fausto. This swell will result in an increased risk of dangerous rip currents across the coastal beaches, as well as elevated surf of 3-6 ft across the Los Angeles and Ventura County Beaches. Therefore, Beach Hazard Statements are in effect through the weekend for Los Angeles and Ventura County beaches and the Central Coast beaches. Rip currents and elevated surf will be strongest across south to southwest facing beaches and harbors such as Avila Beach.

The Eastern Pacific looks to remain active with tropical systems over the next couple of weeks. This could result in additional southerly swells to impact the coastline.

LOX WATCHES/WARNINGS/ADVISORIES

CA...Heat Advisory remains in effect until 8 PM PDT Monday for zones 38-88-342>345-348>358-362-366>382-548. (See LAXNPWLOX). Beach Hazards Statement in effect from noon PDT today through Sunday evening for zones 340-346. (See LAXCFWLOX). Beach Hazards Statement in effect through Sunday evening for zones 354-362-366. (See LAXCFWLOX). Extreme Heat Warning in effect until 8 PM PDT Monday for zone 383. (See LAXNPWLOX). PZ...Small Craft Advisory in effect until 3 AM PDT Saturday for zone 645. (See LAXMWWLOX). Gale Warning in effect until 3 AM PDT Saturday for zone 670. (See LAXMWWLOX). Small Craft Advisory in effect until 3 AM PDT Sunday for zones 673-676. (See LAXMWWLOX).