textproduct: San Diego

SYNOPSIS

Warmer today, then cooling for Thursday through the weekend with gusty southwest to west winds for the mountains and deserts on Thursday and Friday becoming west to northwest for the weekend. A low pressure system from the northwest will bring showers for late Friday through Saturday with a second low pressure system from the northwest continuing the showers through Sunday. Then drying and warmer for Monday through Wednesday of next week.

SHORT TERM (Today through Friday)

The warming trend will continue today with high temperatures a few to around 5 degrees warmer than Tuesday, a few degrees above average near the coast to 8 to 12 degrees above average for the mountains and deserts. High temperatures for today will range from around 70 near the coast to the 80s for the Inland Empire with the lower deserts in the mid to upper 90s.

A low pressure system nearing the coast of northern and central California on Thursday will move into southern California late Friday. There will be increasing clouds for Thursday and Friday and stronger onshore flow will bring gusty southwest to west winds to the mountains and deserts during the afternoon and evening on Thursday and Friday with the stronger gusts to 35 to 45 mph.

There will be a cooling trend for Thursday and Friday with high temperatures cooling around 5 degrees for inland areas on Thursday and another few degrees for inland areas on Friday. Friday high temperatures will range from near to around 5 degrees above average. Friday high temperatures will range from around 70 near the coast to the 70s for the valleys with the lower deserts around 90.

Precipitation will spread into southwestern California for late Friday and Friday night. A snow level around 8500 feet on Friday afternoon will fall to around 7500 feet for late Friday night.

LONG TERM (Saturday through Tuesday)

Showers will continue through Saturday along with a slight chance of thunderstorms. A second low pressure system from the northwest will continue the showers through Sunday. The cooling trend will continue through Sunday with Sunday high temperatures as much as 10 to 15 degrees below average for the mountains. High temperatures on Sunday will be mostly in the 60s for the coast and valleys and in the 70s for the lower deserts. The snow level will gradually lower through the weekend to around 7000 feet on Saturday and 6500 to 7000 feet on Sunday.

Rainfall for late Friday through Sunday night could range from one-half to one inch near the coast to 1.5 to 2 inches in the mountains with one-quarter to one-half inch for the high desert and one-tenth to one-quarter inch for the lower deserts.

There will be drying and warming for Monday through Wednesday of next week with Wednesday high temperatures around 5 degrees above average with high temperatures ranging from around 70 near the coast to around 80 for the Inland Empire with the lower deserts around 90.

AVIATION

080930Z...Low clouds 700-1100 feet MSL will continue to cover most coastal areas through 14Z. Vis reduced 1-5SM in BR on higher coastal terrain. Scatter out 15-17Z. Coastal low clouds at 900-1200 feet MSL to redevelop after 06Z and gradually cover most of the coastal areas, less likely around KSNA, overnight into Thursday. Brisk west to southwest winds 25-35 kts over the mtns/desert foothills into the deserts after 01Z.

MARINE

There will be occasional wind gusts exceeding 20 knots and locally choppy conditions in the vicinity of San Clemente Island tonight. There is a 20% chance of thunderstorms over the waters Friday night through Saturday. Otherwise, no hazardous marine conditions are expected through Sunday.

SKYWARN

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

SGX WATCHES/WARNINGS/ADVISORIES

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