textproduct: Los Angeles

SYNOPSIS

08/219 AM.

A warming trend will continue into early next week. Temperatures will reach the mid 70s to 80s across much of the region through Friday, warming to the 80s and 90s over the weekend through Tuesday. 100 degree readings may occur locally in the warmest valleys on Sunday and Monday.

LONG TERM (TUE-FRI)

08/1207 PM.

Cooling is expected in most areas Tuesday as the high pressure aloft weakens, which in turn will increase onshore flow. The onshore push may be strong enough for winds nearing advisory levels for the far interior, leading to heightened fire weather concerns. Highs will drop 4-8 degrees most areas, though desert areas may need to wait for Wednesday for more significant cooling. By that time highs area- wide will be within a few degrees of normal.

Forecast confidence is below normal for later next week, although impacts will likely be low regardless with temperatures likely within 5 degrees of normal with night to morning low clouds and fog near the coast.

AVIATION

08/1811Z.

At 1714Z at KLAX, the marine layer was 2000 ft deep. The top of the inversion was at 3300 ft with a temperature of 19 C.

High confidence in VFR TAFs for desert airfields (KPMD & KWJF).

Moderate confidence in remaining TAFs. Timing of CIG/VSBY restrictions may be off +/- 3 hours and flight minimums by one category. Lowest confidence for KVNY & KBUR which has a 30% chance low-IFR CIGs do not arrive.

KLAX...Moderate confidence in TAF. MVFR CIGs around 018 expected to clear 19-20Z Fri. Patchy IFR CIGs to develop in the area around 04Z. Better coverage expected at 09Z (+/- 2 hours) with IFR CIGs 008. CIGs likely to lift to low MVFR around 15Z Sat. Expecting clearing around 18Z Sat. However, there is a 30% chance CIGs 010 linger through fcst pd. No significant east wind component expected.

KBUR...Low to moderate confidence in TAF. VFR conditions expected through at least 09Z Sat. CIGs 004-008 could arrive 13Z-16Z, but confidence is low with a 30% chance it doesn't occur. No wind issues expected.

MARINE

08/726 AM.

SCA level NW winds are expected to strengthen each day through Saturday for the outer waters. Winds may approach Gale Force levels today (20% chance), with GALES likely (40-60% chance) Saturday afternoon and evening over the northern two zones, near and NW of Point Conception. For the southern outer zone PZZ676, SCA winds are likely through early Sunday morning.

For the nearshore waters, SCA level winds are likely during the late afternoon into evening hours along the Central Coast and into at least western portions of the Santa Barbara Channel and near the Channel Islands today and possible again Saturday afternoon and evening.

Short period seas will build during this timeframe especially across the outer waters - peaking 10 to 13 ft today through Saturday night.

Winds and seas should diminish throughout the day on Sunday. By Monday, conditions should be much calmer and likely below SCA levels.

LOX WATCHES/WARNINGS/ADVISORIES

CA...Wind Advisory in effect from 5 PM this afternoon to 2 AM PDT Saturday for zones 349-351. (See LAXNPWLOX). PZ...Small Craft Advisory in effect until 3 AM PDT Saturday for zones 645-650. (See LAXMWWLOX). Small Craft Advisory in effect until 2 PM PDT Saturday for zones 670-673. (See LAXMWWLOX). Gale Watch in effect from Saturday afternoon through Saturday evening for zones 670-673. (See LAXMWWLOX). Small Craft Advisory in effect until 3 AM PDT Sunday for zone 676. (See LAXMWWLOX).