textproduct: Los Angeles

SYNOPSIS

17/1149 PM.

Steady cooling through Friday with below normal temperatures continuing through the weekend. There will ample low clouds each morning through the weekend. Gusty onshore winds will affect interior areas through the week. A significant warming trend remains on track for next week with heat impacts expected.

LONG TERM (SUN-WED)

18/232 AM.

Not too much excitement on Sunday and Monday. Zonal flow will continue over the state. The onshore flow will weaken just a little bit. This should decrease the morning cloud coverage a little bit and allow for somewhat better and faster clearing. Look for 1 or 2 degrees of warming on Sunday. 3 to 6 degrees of warming is possible Monday as hgts rise a little and compresses the marine layer.

The mdls have backed off a little on the warm up slated for next Tue-Thu. At one time an upper high was fcst to move over Srn CA now it appears that it will stay to the SE. Hgts should still warm to an above normal 594 dam. At the sfc mdt-stg onshore flow will persist in the W to E direction but the onshore push to the north will weaken through the period. The higher hgts will likely smoosh the marine layer to 1000 ft or less which will greatly reduce the amount of clouds making it into the vlys in the mornings. This compression will strengthen the marine inversion which will hinder the clearing near the shore. The current forecast calls for 2 to 4 degrees of warming each day Tue and Wed with little change on Thursday. This warming would bring vly temps into the mid 80s and lower 90s. Since this is the day 6 and 7 forecast there is still lower confidence and it is not out of the question the the fcst could snap back to a warmer one.

AVIATION

18/0934Z.

At 0832Z at KLAX, the marine layer was 2500 ft deep. The top of the inversion was near 4800 ft with a temperature of 20 Celsius.

High confidence in KPMD & KWJF.

Fair confidence in TAFs - VFR transtion could be up to 2 hours later than fcst.

KLAX...Moderate confidence in TAF. VFR conds may arrive any time 19Z-22Z. No significant east wind component expected.

KBUR...Moderate confidence in TAF. VFR conds may arrive any time 1630Z-18Z.

MARINE

18/205 AM.

Fairly high confidence in winds and seas staying below Small Craft Advisory (SCA) criteria through Saturday, but typically gusty winds of 15 to 20 knots will form each afternoon and evening over several nearshore spots.

LOX WATCHES/WARNINGS/ADVISORIES

CA...Beach Hazards Statement in effect through late tonight for zones 349-350-354-362-366. (See LAXCFWLOX). PZ...NONE.