textproduct: Los Angeles

SYNOPSIS

24/212 AM.

High pressure will bring significant warming to the area this week with with mostly clear to partly cloudy skies. High temperatures today will be 8 to 12 degrees above normal. Additional warming Wednesday through Friday will raise temperatures to the 80s and possibly lower 90s with just minor cooling over the weekend.

LONG TERM (FRI-MON)

24/212 AM.

Friday will be the warmest day as the ridge peaks with 586 dam hgts. This in combination with a switch to offshore flow from the E will limit the low clouds to the Central Coast and allow for another 2 to 4 degrees of warming. SLO and SBA counties may not warm that much as there is quite a bit of high clouds fcst to drift overhead. Look for max temps to end up in the upper 70s to mid 80s across the csts and in the 80s and lower 90s in the vlys. Some locations will be near daily records.

A cooling trend will kick off Saturday. The will slowly flatten and push to the east as an upper low rotates down off the coast of WA/OR. By Monday hgts will be all the way down to 570 dam. Onshore flow develops as well and increases. This will increase the amount of low clouds and will also allow for deeper penetration. Max temps are slated to fall 3 to 6 degrees Saturday, 2 to 5 degrees Sunday and an additional 5 to 7 degrees on Monday. Monday's highs will be down to the upper 60s to mid 70s for most of the csts/vlys. These temperatures, despite all the cooling, are still several degrees above normal.

The upper low does a pretty close swing by on Monday, but almost all of the ensembles are dry at this time.

The EC-AI mdl does not see any meaningful chc of rain through the tenth of March while the GFS-AI does fcst a storm on the 8th.

AVIATION

24/1049Z.

At 0825Z at KLAX, there was no marine layer. There was a surface based inversion to 1500 with a temperature of 22 degrees Celsius.

High confidence in all TAFs except KPRB (20% chc LIFR conds 10Z-16Z). Lower confidence after 10Z Wednesday with return of coastal low cloud fcst.

KLAX...High confidence in TAF through 08Z the lower confidence due to uncertainty with cig timing and hgt of low clouds. Any east wind component is expected to remain below 7 kts.

KBUR...High confidence in TAF.

MARINE

24/231 AM.

For the outer waters and the inner waters north of Point Conception, there is a high chance of Small Craft Advisory (SCA) level winds for much of the week. The strongest winds are expected near Point Conception to San Nicholas Island, with a 20 percent chance of localized gale force gusts both Tuesday and Wednesday evening. Inside the southern California bight, good confidence in current forecast with SCA conditions Tuesday afternoon through at least Wednesday night, strongest near the Channel Islands and over western portions of the Santa Barbara Channel. There is a 20% chance for localized gale force gusts, especially near the Channel Islands Tuesday evening. Tuesday evening, there is a 30-50% chance for SCA winds across nearshore waters adjacent to Los Angeles and Orange Counties.

LOX WATCHES/WARNINGS/ADVISORIES

CA...High Surf Advisory in effect until 9 PM PST this evening for zones 340-346. (See LAXCFWLOX). PZ...Small Craft Advisory in effect from 2 PM this afternoon to 4 AM PST Thursday for zone 650. (See LAXMWWLOX). Small Craft Advisory in effect until 4 AM PST Thursday for zones 673-676. (See LAXMWWLOX).