textproduct: San Diego

SYNOPSIS

High temperatures for inland areas will cool a few degrees today with high temperatures a few degrees below average for the mountains and inland valleys. This will be followed by a warming trend with high temperatures warming to 4 to 8 degrees above average on Thursday followed by slight day-to-day differences. For Thursday through next weekend, there will be widespread moderate or greater HeatRisk except near the coast and for the higher elevations in the mountains with widespread major HeatRisk for the lower deserts. An increase in monsoonal moisture late in the week could bring a slight chance of afternoon thunderstorms, mainly for the mountains and centered around Friday.

SHORT TERM (Today through Wednesday)

High temperatures will cool a few degrees today with high temperatures for the mountains and inland valleys a few degrees below average. High temperatures will range from the mid to upper 70s near the coast to the 90s for the Inland Empire with 106 to 110 for the lower deserts. Inland areas will then warm a few degrees for Tuesday and Wednesday with Wednesday high temperatures mostly a few to around 5 degrees above average. High temperatures for Wednesday will range from the mid 70s to around 80 near the coast to the 90s to 102 for the Inland Empire with 108 to 112 for the lower deserts.

There will be slight drying of monsoonal moisture early this week with fewer afternoon clouds over the mountains. Night and morning coastal low clouds will spread into portions of the far western valleys late each night.

LONG TERM (Thursday through Sunday)

There will be additional warming of high temperatures on Thursday followed by slight day-to-day changes through next weekend. High temperatures on Thursday will be mostly 4 to 8 degrees above average ranging from the mid 70s to lower 80s near the coast to the mid 90s to 108 for the Inland Empire with 110 to 114 for the lower deserts. For Thursday through next weekend, there will be widespread moderate or greater HeatRisk except near the coast and for the higher elevations in the mountains with widespread major HeatRisk for the lower deserts.

An increase in monsoonal moisture late in the week could bring a slight chance of afternoon thunderstorms, mainly for the mountains and centered around Friday.

AVIATION

200900Z....Coast/Valleys...Patchy low clouds based 1100-1500 ft MSL are covering up to 15 miles inland in SD County. VIS 0-5SM along elevated terrain. Low cloud coverage is very patchy and intermittent throughout Orange County, and is expected to remain so throughout the early morning. Low clouds scatter out 15-17z Mon, with FEW-SCT mid-high level clouds remaining through the evening. Low clouds with slightly lower bases redevelop along the SD County coast in the evening, reaching a few miles inland after 07z Tue, though remaining very patchy throughout the night.

Mountains/Deserts...FEW-SCT clouds generally AOA 15,000ft MSL. West winds gusting 20-35 kts along desert slopes and up to 45 kts through the Banning Pass expected from 00-09z Tue.

MARINE

There is a ~70% chance for NW wind gusts to exceed 20 kts in the outer waters near San Clemente Island Wednesday afternoon, and a 60% chance Thursday afternoon. Additionally, a mixed swell will cause steep and choppy seas during the day Thursday, especially in the outer waters.

BEACHES

Southerly swell of 4-5 ft with a period of 11-13 seconds will continue to bring elevated to high surf and strong rip and longshore currents through Tuesday. Surf 4-7 feet with sets to 8 feet is expected through Tuesday, with the highest surf focused on south and southwest facing beaches of Orange County. A High Surf Advisory remains in effect until 11 PM Tuesday.

The southerly swell and surf falls through the day on Tuesday, remaining low into Wednesday. Another round of elevated southerly swell from a tropical cyclone well off the coast is expected later this week. This swell is expected to be around 4-5 ft with a period of about 15 seconds which would once again bring high surf of 6-8 feet, especially for south-southwest facing beaches.

SKYWARN

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

SGX WATCHES/WARNINGS/ADVISORIES

CA...High Surf Advisory until 11 PM PDT Tuesday for Orange County Coastal Areas-San Diego County Coastal Areas.

PZ...None.