textproduct: Los Angeles

SYNOPSIS

25/1057 PM.

Hotter than normal conditions will continue for the foreseeable future, generally hottest through Sunday. Slightly cooler Monday through Thursday, with heat increasing again Friday and Saturday. The hot daytime and warm night conditions will bring elevated risks of heat-related illness.

LONG TERM (WED-SAT)

25/117 PM.

The large area of high pressure will continue to impact the region through the long term. The center of the high pressure will move slightly east Tuesday through Wednesday, bringing some relief from the heat, but only by a few degrees. Coastal areas will see the most noticeable drop in temperatures as onshore gradients strengthen, allowing low clouds and fog to expand some. Additionally, PWATs will finally drop below 1 inch by Tuesday afternoon, meaning it will be/feel less humid than it has been these past few weeks.

The majority of the ensemble solutions show the ridge of high pressure pushing back to the west around Friday or Saturday of next week. This will likely push temperatures back up a few degrees, but the warming may be mainly focused over the mountains and interior valleys as the onshore flow changes little. Thankfully, PWATs are not forecast to increase drastically like they have over the last week or two of warm ups the region has had, which means the air will feel drier than it has.

AVIATION

26/0556Z.

At 05Z at KLAX, the marine layer was 1100 ft deep. The top of the inversion was near 4000 ft with a temperature of 27 Celsius.

High confidence in VFR conditions through at least Sunday at KBUR KVNY KPMD KWJF. Chances for LIFR/IFR conditions at KPRB (10%) KSBP (20%) KSMX (50%) KSBA (20%) KOXR (40%) KCMA (40%) KSMO (50%) KLAX (60%) KLGB (80%). Winds will be similar to last 24 hours.

KLAX...60% chance of BKN008-012 08-16Z. High confidence in any east winds staying under 6 knots.

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

MARINE

25/846 PM.

For the outer waters, moderate to high confidence in the current forecast. Small Craft Advisory (SCA) level winds can be expected most of the time through Thursday night. Local gale force gusts will be possible tonight, with periods of gales possible through the week. SCA level steep and choppy seas are also expected due to the consistent, moderate to strong winds.

For the inner waters north of Point Sal, generally high confidence in the current forecast. SCA level wind gusts should be prevalent much of the time through Wednesday evening followed by conds dropping below SCA levels for Thursday and Thursday night. Steep choppy seas are expected much of the time as well.

For the southern inner waters, moderate to high confidence in the current forecast. The western Santa Barbara Channel will likely see SCA level wind gusts at times mainly in the afternoon and evening hours through Tuesday night. Otherwise and elsewhere, conds will remain below SCA levels through Thursday night.

BEACHES

25/847 PM.

A long period (20-22 seconds) southern hemisphere swell 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. In addition there are strong longshore currents, and powerful breaking waves due to the very long periods. Dangerous conditions have been reported from area beaches, with the highest hazard on exposed south to southwest facing beaches.

A Beach Hazard Statement is in effect at least through the weekend for Los Angeles and Ventura County beaches and the Central Coast beaches.

The Eastern Pacific will remain active with Hurricane Genevieve forecast to track from a location SW of mainland Mexico NWWD to a point well west of southern Baja over the next 5 days. This will result in additional southerly swells to impact the coastline through the middle of next week. As a result, the Beach Hazards Statement has been extended through Wednesday for south and southwest facing beaches.

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 through Wednesday afternoon for zones 340-346-354-362-366. (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 Tuesday for zone 645. (See LAXMWWLOX). Small Craft Advisory in effect until 6 PM PDT Sunday for zone 650. (See LAXMWWLOX). Small Craft Advisory in effect until 5 PM PDT Monday for zones 670-673-676. (See LAXMWWLOX).