textproduct: San Diego

SYNOPSIS

Strengthening high pressure will bring warming into the weekend with Saturday high temperatures 8 to 12 degrees above average for inland areas. For the early and middle of next week, there will be slight cooling of high temperatures with slowly increasing humidity for inland areas. There will be widespread extreme HeatRisk for the lower deserts for Sunday through Tuesday with widespread moderate or greater HeatRisk for most areas for Thursday through Monday except for the beaches and for mountain elevations above 7500 feet. There will be night and morning low clouds for coastal areas.

SHORT TERM (Today through Friday)

Not much change in high temperatures is expected for today. High temperatures for most areas will be within a few degrees of average with the deserts around 5 degrees above average. High temperatures for today will range from the mid to upper 70s near the coast to the 90s for the Inland Empire with 110 to 114 for the lower deserts.

High temperatures on Thursday will warm a few degrees with additional warming on Friday of a few to around 5 degrees with the greater warming on Friday for the inland valleys, inland Orange County, and mountain elevations below 5000 feet. High temperatures on Friday will around 5 degrees above average near the coast and 5 to 10 degrees above average for inland areas. High temperatures on Friday will range from the mid 70s to lower 80s near the coast to the upper 90s to 108 for the Inland Empire with 114 to 118 for the lower deserts.

LONG TERM (Saturday through Tuesday)

High pressure over the southwest states will be strongest on Saturday, then will slowly weaken into the middle of next week, but with increasing lower level moisture and humidity for the early and middle portion of next week for inland areas.

High pressure will be strongest over southern California on Saturday. High temperatures on Saturday will be a few degrees warmer than Friday, around 8 to 12 degrees above average for the mountains, deserts, and inland valleys. High temperatures on Saturday will range from around 80 near the coast to the upper 90s to 108 for the Inland Empire with 116 to 120 for the lower deserts.

High temperatures will cool a few degrees on Sunday and cool a few to around 5 degrees on Monday with the greatest cooling on Monday in the San Diego County valleys. Not much change is expected on Tuesday. High temperatures on Monday and Tuesday will range from a few degrees above average near the coast to 5 to 10 degrees above average for the mountains and deserts. High temperatures for Monday and Tuesday will range from the mid 70s to around 80 near the coast to the mid 90s to 105 for the Inland Empire with 114 to 118 for the lower deserts. There will be widespread extreme HeatRisk for the lower deserts for Sunday through Tuesday.

AVIATION

290600Z....Coast/Valleys...Low clouds based 900-1200ft MSL are moving inland and will continue to spread northward through 14z. Slight chance (20%) of CIGs at KONT intermittently between 12z and 16z. VIS 3-5SM where stratus nears higher coastal terrain and in the western valleys. Low clouds clearing to the coast 16-18z, with stratus potentially lingering at beaches through the afternoon. Low clouds redevelop around 00z Thur, moving inland by 01-03z with similar or slightly lower bases.

Mountains/Deserts...Mostly SKC with unrestricted VIS through Wednesday. Intermittent high cu AOA 20,000ft possible.

MARINE

No hazardous marine weather is expected through Sunday.

BEACHES

A south swell from 200 degrees of 3-4 ft feet at 17 seconds will produce surf of 3-6 feet with sets to 7 feet Wednesday. Strong rip currents are expected along with minor tidal overflow during the evening high tide.

Wednesday evening, a 4-5 ft swell from 160-180 degrees with a period of 13-15 seconds associated with Hurricane Genevieve will arrive. Surf of 5-9 ft is expected on south facing beaches in Orange County with surf around 3-6 ft elsewhere. Surf will peak on Thursday and Friday, when the swell direction shifts to 180-190 degrees. Strong rip and longshore currents will create dangerous swimming conditions at most area beaches. In addition to the high surf, evening high tides will be above 6 ft this week. The combination of high tides and surf increases the risk of coastal flooding. The swell, period, and tides are expected to decrease over the weekend. Further information can be found in the High Surf Advisory.

SKYWARN

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

SGX WATCHES/WARNINGS/ADVISORIES

CA...Beach Hazards Statement through Wednesday afternoon for Orange County Coastal Areas-San Diego County Coastal Areas.

Coastal Flood Advisory from 5 PM Wednesday to 3 AM PDT Saturday for Orange County Coastal Areas-San Diego County Coastal Areas.

High Surf Advisory from 5 PM Wednesday to 5 PM PDT Saturday for Orange County Coastal Areas-San Diego County Coastal Areas.

Heat Advisory from 10 AM Friday to 8 PM PDT Sunday for Orange County Coastal Areas-San Diego County Coastal Areas.

Extreme Heat Warning from 10 AM Thursday to 8 PM PDT Sunday for Apple and Lucerne Valleys-Coachella Valley-Riverside County Mountains-San Bernardino and Riverside County Valleys-The Inland Empire-San Diego County Deserts-San Diego County Mountains-San Gorgonio Pass near Banning.

Extreme Heat Warning from 10 AM Friday to 8 PM PDT Sunday for Orange County Inland Areas-San Diego County Valleys-Santa Ana Mountains and Foothills.

Heat Advisory from 10 AM Thursday to 8 PM PDT Sunday for San Bernardino County Mountains.

PZ...None.