textproduct: Los Angeles

SYNOPSIS

31/249 AM.

Temperatures will become dangerously hot in many areas Friday through this weekend, as the next heat wave arrives. Some cooling is expected next week, though temperatures will remain above normal. Dangerous surf conditions are expected at area beaches this week into this weekend, as a result of swells from a distant tropical cyclone located west of Mexico.

LONG TERM (MON-THU)

31/324 AM.

The slow cooling trend will continue into next week, though temperatures will still be 3-6 degrees above normal. In addition, monsoon moisture is expected to return next week which will limit overnight cooling and keep humidities higher than normal. Therefore, heat hazards may continue into next week.

AVIATION

31/0239Z.

At 0036Z at KLAX, the marine layer was 900 feet deep. The top of the inversion was 2900 feet with a temp of 28 degrees Celsius.

High confidence in VFR TAFs for KPRB, KBUR, KVNY, KPMD, KWJF. 10% chance for VLIFR-LIFR conds at KBUR/KVNY 10Z-16Z.

Low confidence in TAFs for KSBP and KSMX. 30% chance for VFR conds to prevail, but if cigs arrive, 40% chance for VLIFR conds also due to dense fog.

Moderate confidence in remaining TAFs, higher for LA County sites. Timing of flight cat changes may be off +/- 2 hours and flight cats may be off by 1 cat, but good confidence in low clouds overnight.

KLAX...Moderate confidence in TAF. Timing of flight cat changes may be off +/- 2 hours from TAF, and lowest cigs may be off +/- 200 feet. No significant east wind component expected.

KBUR...High confidence in VFR TAF. There is a 10% chance for VLIFR to LIFR conds 10Z-16Z.

MARINE

30/727 PM.

For the Outer Waters, Small Craft Advisory (SCA) winds and seas will occur through the remainder of this week into this weekend, before subsiding early next week. Winds will generally peak at around 30 knots but occasional gusts to 35 knots will be possible, mainly during the evening hours.

For the Inner Waters north of Point Sal, there is an 80% chance for SCA winds each afternoon and evening through Saturday. For the Inner Waters south of Point Conception, there is a 40% chance of SCA winds each afternoon and evening through this weekend over the western one-third of the Santa Barbara Channel.

Seas of 8-12 feet will impact the outer waters into this weekend, due to a long-period southerly swell from a distant tropical cyclone, combining with shorter-period northwesterly swell/wind- waves caused by the moderate to locally strong NW winds. As a result, steep, hazardous seas will be common, especially over the outer waters, extending to nearshore waters off the Central Coast.

LOX WATCHES/WARNINGS/ADVISORIES

CA...Extreme Heat Warning in effect until 8 PM PDT Sunday for zones 38-88-343>345-351>353-355>358-368>376-378-379-381>383-548. (See LAXNPWLOX). Coastal Flood Advisory in effect until 3 AM PDT Saturday for zones 87-354-362-366. (See LAXCFWLOX). High Surf Advisory in effect until 5 PM PDT Saturday for zones 87-354-362-366. (See LAXCFWLOX). Beach Hazards Statement in effect through Saturday afternoon for zones 340-346-349-350-356. (See LAXCFWLOX). Heat Advisory in effect until 8 PM PDT Sunday for zones 341-342-347>350-354-362-366-367-377-380. (See LAXNPWLOX). Heat Advisory in effect until 10 AM PDT this morning for zones 378-379. (See LAXNPWLOX). PZ...Small Craft Advisory in effect from 3 PM this afternoon to 3 AM PDT Saturday for zone 645. (See LAXMWWLOX). Small Craft Advisory in effect until 5 AM PDT Monday for zones 670-673-676. (See LAXMWWLOX).