textproduct: Los Angeles

SYNOPSIS

26/812 PM.

Hotter than normal conditions will continue for the foreseeable future. Slight cooling is possible Monday through Thursday, with heat increasing again Friday through Sunday. The hot and humid conditions during the day and night will bring elevated risks of heat-related illness.

LONG TERM (THU-SUN)

26/208 PM.

High pressure aloft will continue to dominate through next weekend, even strengthening later in the week as the high expands west from the four corners region and perhaps reaches 600dam by Sunday. Models are in relatively strong agreement that temperatures will be moving up at least 3-6 degrees starting Thursday and peaking Sat/Sun. This should push temperatures to around 105 or slightly higher in the warmer coastal valleys and closing in on 110 in the deserts and interior SLO County. If the current heat hazards are dropped Monday, chances are at least 60-80% that they will return late in the week and weekend.

Also have to keep a close eye on rapidly strengthening Hurricane Genevieve west of Mexico. While the projected path keeps it well south and west of the border due to strong anticyclonic flow aloft, it's likely to create another surge of dangerous south swells, perhaps as early as later this week.

AVIATION

27/0649Z.

At 0535Z at KLAX, the marine layer was 800 ft deep. The top of the inversion was near 2400 ft with a temperature of 29 Celsius.

High confidence in TAFs for KBUR KVNY KPMD KWJF and KPRB.

Moderate confidence in TAFs for KLGB, KLAX and KSMX where the arrival and departure times of CIGs could be off by +/- 2 hours.

Fair confidence in TAFs for KSBA and KCMA with only a 15 percent chc of IFR cigs 13Z-16Z.

Moderate confidence in TAFs for KSBP, KOXR and KSMO with a 30 percent chc of IFR/LIFR cig/vis 11Z-16Z.

KLAX...Moderate confidence in TAF. Cigs could arrive as late as 14Z and VFR conds could arrive as late as 1730Z. High confidence in any east winds staying under 6 knots.

KBUR...High confidence in CAVU TAF.

MARINE

26/956 PM.

For the outer waters, moderate to high confidence in the current forecast. Small Craft Advisory (SCA) level winds are expected most of the time through Thursday night. Periods of gales are possible through much of the week. A GALE WARNING has been issued for the two northern outer zones (PZZ670-PZZ673) from late this afternoon through late tonight. After a lull Tuesday morning, additional gales are possible Tuesday night. SCA level steep and choppy seas are also expected due to the persistent, 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

26/811 PM.

A long period (18-20 seconds) southern hemisphere swell will add to the hurricane swell from west of Baja. The combined swells 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 long periods. Dangerous water conditions have been reported from area beaches, with numerous rescues. The highest hazard is on exposed south to southwest facing beaches.

A Beach Hazard Statement is now in effect through Wednesday afternoon 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 S of Baja to the northwest over the next 5 days. This will result in additional southerly swells impacting 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). Wind Advisory in effect until 3 AM PDT Monday for zones 349-351. (See LAXNPWLOX). 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 zones 645-676. (See LAXMWWLOX). Small Craft Advisory in effect until 3 AM PDT Monday for zone 650. (See LAXMWWLOX). Small Craft Advisory in effect until 3 PM PDT Monday for zones 670-673. (See LAXMWWLOX). Gale Warning in effect from 3 PM Monday to 3 AM PDT Tuesday for zones 670-673. (See LAXMWWLOX).