textproduct: San Diego

SYNOPSIS

A deep marine layer will decrease in depth through the weekend into next week. There will be scattered light showers at times into this morning from the coast to the mountains, then dry weather will prevail through next week. High temperatures will warm more rapidly through the weekend, then more slowly for the mountains and deserts for Monday through Thursday of next week with not much change for the coast and valleys. High temperatures for next week will be a few degrees above average for coastal areas and around 4 to 8 degrees above average for inland areas. Night and morning coastal low clouds for the weekend into next week will spread into the western valleys late each night.

SHORT TERM (Today through Sunday)

The marine layer is around 5000 feet deep, a decrease of around 500 feet from 24 hours ago. There have been a few light showers since Thursday evening from the coastal waters to the coastal slopes of the mountains with some increase in coverage expected before sunrise into early this morning. Rainfall is expected to once again be light for those locations receiving measurable rainfall, a few hundredths of an inch to less than one-tenth inch. The showers are expected to end by noon followed by dry weather through next week.

High temperatures will begin to warm with the greater warming continuing through the weekend. High temperatures for today will be as much as 12 to 18 degrees below average for the mountains with Sunday high temperatures for most areas a few to around 5 degrees above average. High temperatures for today will range from the 60s near the coast to the upper 60s to mid 70s for the Inland Empire with the lower to mid 80s for the lower deserts. On Sunday, high temperatures will range from the lower 70s near the coast to the mid 80s to lower 90s for the Inland Empire with the lower deserts around 100.

The marine layer will decrease depth with night and morning coastal low clouds spreading into the western valleys late each night during the weekend.

LONG TERM (Monday through Thursday)

After the more rapid warming through the weekend, high temperatures for the deserts will warm much more slowly for Monday through Thursday with slowly increasing spread in the high temperature guidance for the middle of next week. The coast and valleys may cool slightly on Tuesday followed by slow warming for Wednesday and Thursday with increasing spread in the high temperature guidance.

High temperatures will generally be a few degrees above average for coastal areas to 4 to 8 degrees above average for inland areas with high temperatures ranging from the lower 70s near the coast to the 80s for the Inland Empire with 102 to 106 for the lower deserts. Night and morning coastal low clouds will spread into the western valleys late each night.

AVIATION

291000Z...Coast/Valleys/Coastal Mountain Slopes...SCT-BKN low clouds based 3000-5000 ft MSL will remain in place over the coastal basin through late this morning. Vis reduced 0-5SM in FG on coastal slopes. ISO-SCT -SHRA briefly reducing cigs to 2500 feet MSL through 18Z. Clouds will gradually clear from northwest to southeast 15-19Z Friday. Patchy low clouds based near 2000 ft MSL develop over coastal San Diego County around 01-03z Sat. Clouds increase in coverage and expand to Orange County overnight, but remain confined to coastal areas.

Higher Mountains/Deserts...VFR conditions expected through the period. Westerly wind gusts 25-40 kts through mountain passes and along desert slopes through 15Z Friday. Local up/downdrafts and local LLWS in lee (east) of mountains. Elevated westerly winds return late Friday afternoon with gusts 25-35 kts in the same locations.

MARINE

Northwest wind gusts will approach 20 kts over outer coastal waters Saturday afternoon and evening. Otherwise, no hazardous marine conditions are 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.