textproduct: Los Angeles

SYNOPSIS

24/303 AM.

A shallower marine layer is expected over the next few days. Warm weather will peak on today and continue into Thursday. A cooling trend with a more pervasive marine layer cloud pattern and below normal temperatures is expected Friday into the weekend.

LONG TERM (SAT-TUE)

24/236 AM.

June Gloom will be back with a vengeance during the xtnd period. An unseasonably cold upper low will move into the the PACNW and slowly move through. A trof associated with the upper low will be draped over CA for the 4 day period. Hgts will fall to around 584 dam. Strong onshore flow will continue to the east. While there will be moderate onshore flow to the north in the afternoon it will be much weaker in the mornings. Look for plenty of night through morning low clouds across the csts/vlys every day. Clearing will be on the slow side and a few beaches will remain cloudy in the afternoon. Portions of the SBA south cst may be the exception as local north flow may keep the low clouds away.

Look for a big cool down on Saturday followed by minimal changes Sun thru Tue. Max temps will mostly be in the 70s across the csts/vlys (mid to upper 60s at the beaches) and only lower to mid 80s for the inland areas. These max temps are 3 to 5 degrees cooler than normal at the csts and 5 to 10 locally 12 below normal across the vlys and inland areas.

There will be local north winds in the evening across the portions of the SBA south cst as well gusty afternoon winds in the Antelope Vly.

AVIATION

24/1003Z.

At 0829Z at KLAX, the marine layer was 900 feet deep. The top of the inversion was 2800 feet with a temperature of 22 C.

High confidence in TAFs for KPMD & KWJF.

Moderate confidence in TAFs for KPRB, KBUR and KVNY with a 30 percent chc of IFR cigs 11Z-17Z.

Moderate confidence in the remainder of TAFs. VFR conds may arrive +/- 90 min from fcst time. There is a 25 percent chc of LIFR cigs 11Z-16Z at KSBP, KSBA, KOXR and KCMA

KLAX...Moderate confidence in TAF. VFR conds could arrive anytime between 18Z and 2030Z. No significant east wind component is expected.

KBUR...Moderate confidence in TAF. There is a 30% chance of OVC006 conds 11Z-17Z.

MARINE

24/237 AM.

High confidence in winds and seas remaining below Small Craft Advisory (SCA) levels through today. Local gusts could reach 21 kts near Point Conception and across the western Santa Barbara Channel this evening. Chances for SCA criteria gusts increase Thursday evening. Probabilities increase Thursday evening into Friday morning to 30-60% for PZZ670/673. Chances expand and increase Friday afternoon to the inner waters PZZ645/650 and outer waters PZZ676. SCA conditions are possible through the weekend as a trough continues to move over the region.

LOX WATCHES/WARNINGS/ADVISORIES

CA...Heat Advisory remains in effect until 9 PM PDT Thursday for zones 88-368-372-373-379-380-548. (See LAXNPWLOX). PZ...NONE.