Marine Weather and Tide Forecast for El Segundo, CA

.SHORT TERM (TDY-THU)...14/132 PM.

Mostly low impact weather across the area the next several days.
Interior areas will be feeling much cooler as increasing onshore flow and a deepening marine layer usher in cooler air off the ocean. Latest forecast soundings indicate a marine layer depth around 2000-2500 feet tonight in the LA Basin, then increasing further to around 3000 feet by Wednesday and Thursday mornings.
Interior areas will drop a good 10 degrees from today's highs as soon as Tuesday with slower cooling the rest of the week. Most coastal valleys will top out in the low to mid 80s which is 5-10 degrees below normal, with daily morning low clouds and fog.

The only uncertainty in the forecast is with the potential for some monsoon showers by around Thursday. Ensemble solutions and deterministic runs have both been trending less favorable for monsoon conditions across southwest California. Thursday would be the best chance but moisture is pretty minimal despite a moderately favorable upper level pattern from the southeast. Will continue to monitor but for now the forecast is only indicating around a 10 percent change of showers and storms across the eastern LA County mountains and AV.

.LONG TERM (FRI-MON)...14/140 PM.

Once again a mostly low impact forecast weather pattern through early next week. Friday is another day of possible monsoon moisture but LA County remains on the far western periphery of it so chances for any mountain/AV showers or storms remains at around 10%.

Otherwise, a slow warming trend due to weakening onshore flow will begin Friday with 1-3 degrees of warming each day through about Sunday then leveling off there through early next week with temperatures within a few degrees of normal. The marine layer will start to shrink away from the valleys but remain near the coast through the period where the warming trend will be much more gradual.

AVIATION
14/1636Z.

At 1615Z at KLAX, the marine layer was 1500 feet deep. The top of the inversion was at 4400 feet with a max temperature of 27 C.

For 18Z TAF package, high confidence in KPMD and KWJF.

For coastal and coastal valley sites, moderate confidence in 18Z TAFs. Timing of flight category changes could be +/- 2 hours of current forecasts. There is a 30% chance that SCT conditions will not develop this afternoon at KSMO and KLAX.

There is a 20% chance of LIFR conditions at KPRB 12Z-16z.

KLAX...Moderate confidence in 18Z TAF. Timing of flight category changes could be +/- 2 hours of current forecast. There is a 30% chance that SCT conditions do not develop this afternoon. No significant easterly wind component is expected.

KBUR...Moderate confidence in 18Z TAF. Timing of return of CIG/VSBY restrictions could be +/- 2 hours of current forecast.

MARINE
14/1250 PM.

Overall, tonight through Saturday winds and seas are expected to remain below Small Craft Advisory (SCA) levels across all the coastal waters. From Friday night through Saturday, there is a 20% chance of SCA level winds around Point Conception.

LOX WATCHES/WARNINGS/ADVISORIES
CA...NONE.
PZ...NONE.