textproduct: San Diego

This forecast discussion was created in the public domain by the National Weather Service. It can be found in its original form here.

SYNOPSIS

High temperatures will cool a few degrees for today and Saturday, warm slightly on Sunday, then gradually cool through the middle of next week with high temperatures next Wednesday around average for the deserts and as much as 5 to 10 degrees below average for the valleys. Night and morning coastal low clouds will spread into the western valleys late each night.

SHORT TERM (Today through Sunday)

High temperatures will cool a few degrees for today and Saturday with high temperatures on Saturday a few to around 5 degrees below average for the coast and valleys and around 5 degrees above average for the deserts. High temperatures on Saturday will range from the lower 70s near the coast to the mid 80s to mid 90s for the Inland Empire with 108 to 112 for the lower deserts. High temperatures on Sunday will be slightly warmer.

There is a weak coastal eddy early this morning. Satellite imagery shows widespread low clouds over the coastal waters extending inland across all of the Orange County coastal plain and inland in San Diego County across about the western two-thirds of the valleys. The marine layer will deepen to around 2000 feet this morning with low clouds spreading into far western and far southern portions of the Inland Empire.

Slow deepening of the marine layer will continue into Saturday morning with greater coverage of low clouds for the Inland Empire early Saturday. The marine will decrease in depth slightly for Saturday night and Sunday with coastal low clouds spreading into the western valleys with less coverage for the Inland Empire.

LONG TERM (Monday through Thursday)

Days will be gradually cooler for Monday through Wednesday with Wednesday high temperatures around average for the deserts and as much as 5 to 10 degrees below average for the valleys. High temperatures for next Wednesday will range from around 70 near the coast to the 80s and lower 90s for the Inland Empire with 105 to 110 for the lower deserts. The marine layer will be around 2000 feet deep with night and morning coastal low clouds spreading into the western valleys late each night.

AVIATION

110900Z....Coast/Valleys...Low clouds 800-1200 ft MSL are slowly building up to 10-15 miles inland. VIS locally down to 1-5SM in western valleys and where clouds intersect terrain. Scattering back to the beaches by 16-18Z, but patchy clouds will linger along the immediate coast through the afternoon. 40% chance for cigs to stick around all afternoon at KSAN. Clouds with similar bases move inland again after 02Z Sat and progressively build up to 15 miles inland.

Mountains/Deserts...VFR conditions and unrestricted VIS through Saturday.

MARINE

No hazardous marine conditions expected through Tuesday.

SKYWARN

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

SGX WATCHES/WARNINGS/ADVISORIES

CA...None. PZ...None.


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