textproduct: San Diego

SYNOPSIS

High pressure aloft and weak offshore lower-level flow will prevail through Wednesday with high temperatures as much as 10 to 15 degrees above average for coastal areas into the western valleys. A cooling trend will follow for Thursday into early next week with a chance of mostly light showers some time for Friday into Saturday and additional chances of precipitation into next week.

SHORT TERM (Today through Wednesday)

High pressure aloft and weak offshore lower-level flow will prevail through Wednesday with high temperatures 5 to 10 degrees above average for the mountains and deserts to 10 to 15 degrees above average for the coast and western valleys. High temperatures for the coast and valleys will be mostly in the upper 70s to upper 80s with the warmest high temperatures, in the mid to upper 80s, for inland coastal areas into the western valleys.

LONG TERM (Thursday through Sunday)

On Thursday, A low pressure system moving toward the California coast will weaken high pressure aloft with lower-level flow becoming onshore and strengthening. High temperatures on Thursday will cool a few degrees for the deserts to around 5 degrees for the coast into the valleys. High temperatures on Thursday for the coast and valleys will be mostly in the mid 70s to mid 80s with the warmest high temperatures, in the lower to mid 80s, for inland coastal areas into the western valleys.

That low pressure system approaching the California coast on Thursday has both model timing and track differences as it moves toward the southeast, and then inland across northern and central Baja on Friday and Friday night. This will bring additional cooling for Friday and Saturday with high temperatures on Saturday for the coast and valleys mostly in the 70s, in the lower deserts around 80, and for the mountains in the 50s and 60s. This will also bring a chance of showers with uncertain timing for some time for Friday into Saturday. The greater amounts are expected somewhere across central Baja with lighter rainfall possibly extending into portions of southwestern California.

Additional low pressure systems could bring precipitation at times for late in the weekend into next week, but with even greater timing and track differences.

AVIATION

091130...Mostly clear and VFR conditions today and tonight. Local E/NE winds gusting to 25 kts will continue in parts of the foothills and locally into eastern valleys through 21Z.

MARINE

No hazardous marine conditions are expected through Thursday.

BEACHES

A rise in westerly swell will generate surf of 3-7 feet, leading to strong rip currents and hazardous swimming conditions through Tuesday night. A Beach Hazards Statement is in effect for San Diego County beaches through late Tuesday.

High tides will exceed 7 feet this morning and Tuesday morning (tides corrected to reflect current trends in actual tide observations). High tides and elevated surf will combine to generate minor coastal flooding, with areas of moderate coastal flooding along west-facing beaches where surf will be higher. A Coastal Flood Advisory remains in effect through noon Tuesday for beaches in San Diego and Orange Counties.

SKYWARN

Skywarn activation is not requested. However weather spotters are encouraged to report significant weather conditions.

SGX WATCHES/WARNINGS/ADVISORIES

CA...Coastal Flood Advisory until noon PST Tuesday for Orange County Coastal Areas-San Diego County Coastal Areas.

Beach Hazards Statement through Tuesday evening for San Diego County Coastal Areas.

PZ...None.