textproduct: Los Angeles

SYNOPSIS

18/410 PM.

Dangerously hot temperatures will continue all week. Coastal areas likely peaked Tuesday, while valley and interior areas peak through Friday. Dense coastal fog may develop as early as Thursday. Temperatures lower significantly over the weekend and into next week, but remain well above normal.

LONG TERM (SUN-WED)

18/218 PM.

After the 5-10 degree drop Saturday along with some possible coastal fog Sunday morning, temperatures begin a very slow climb back up through the middle of next week. Not expecting temperatures to be as hot as this week, but still 15-20 degrees above normal with a less than 5% chance of reaching 100 in the valleys.

As for rain chances, the GFS and EC deterministic runs are dry through the 28th, looking at their respective ensembles and ensemble AI projections, rain chances were pushed back to the 29th or 30th of March at the earliest. Even then, projections are still very light in accumulations, and not even close to significant at this time.

AVIATION

18/2315Z.

At 23Z at KLAX, there was no marine layer. The surface-based inversion top was at 1500 ft with a maximum temperature of 29 C.

There is a chance of LIFR FG at KLGB (60%), KLAX (40%), KSMO (30%) KOXR (20%), KCMA (10%), KSBA (20%), KSMX (10%) 10-17Z Thursday. Otherwise, high confidence in VFR conditions through Thursday. Chances for LIFR FG increases Thursday night into Friday.

KLAX...There is a 40% chance of LIFR FG 10-17Z Thursday, otherwise high confidence in VFR conditions and any east winds staying under 6 knots. LIFR fog chances increase for Friday morning.

KBUR...High confidence in VFR conditions through at least Thursday.

MARINE

18/152 PM.

Conditions are likely to remain below Small Craft Advisory (SCA) levels through at least Thursday. Thursday evening and Friday evening there is a moderate (30-40 percent) chance of SCA level winds across the far northwestern coastal waters. Over the weekend, SCA winds are likely across the outer waters (with a 20 percent change of GAlE FORCE winds), and seas are likely to build to around 10 feet.

Dense fog will be possible tonight into Thursday morning, and again Thursday night into Friday morning.

LOX WATCHES/WARNINGS/ADVISORIES

CA...Heat Advisory remains in effect until 8 PM PDT Friday for zones 38-87-340-341-343-344-346>350-354-355-362-366-367-549-550. (See LAXNPWLOX). Heat Advisory in effect until 8 PM PDT Friday for zones 38-87-343-344. (See LAXNPWLOX). Extreme Heat Warning in effect until 8 PM PDT Friday for zones 88-342-345-351>353-356>358-368>376-378>380-548. (See LAXNPWLOX). PZ...NONE.