textproduct: San Diego

SYNOPSIS

There will be a slow warming trend for the next week. High temperatures near the coast will warm a few degrees with inland areas warming around 10 degrees over the next week. High temperatures for the deserts will warm to around average during the weekend and around 5 degrees above average for the middle of next week with the valleys still a few to around 5 degrees below average for early next week. The marine layer will gradually decrease in depth with night and morning low clouds not spreading as far into the valleys by next week.

SHORT TERM (Today through Friday)

The marine layer is still around 4000 feet deep with satellite imagery showing coastal low clouds extending inland and onto the lower coastal slopes of the mountains. The marine layer will slowly decrease in depth through the middle of next week. The marine layer will decrease in depth to around 3000 feet for early Thursday and around 2500 feet for early Friday. Low clouds will cover much of the coast and valleys for late tonight into Thursday morning and extend inland into portions of the inland valleys for late Thursday night into Friday morning.

Low pressure across California will slowly weaken this week with high pressure to the south expanding into the area for next week. High temperatures will slowly warm through Wednesday of next week with high temperatures near the coast warming a few to around 5 degrees while inland areas warm around 10 degrees over the next week.

High temperatures for today will be as much as 10 to locally 15 degrees below average for the mountains and Inland Empire. With the warming through Friday, Friday high temperatures will still be 4 to 8 degrees below average for the mountains and valleys.

High temperatures for today will range from around 70 near the coast to the mid 70s to lower 80s for the Inland Empire with the upper 90s for the lower deserts. High temperatures on Friday will range from the lower 70s near the coast to the 80s to around 90 for the Inland Empire with 102 to 106 for the lower deserts.

The atmosphere will be at its driest on Thursday and Friday with precipitable water values decreasing to around one-half inch and with very little spread among ensemble members.

LONG TERM (Saturday through Tuesday)

The slow warming trend will continue into the middle of next week. High temperatures for the lower deserts will warm to around average on Saturday and Sunday with the valleys still around 5 degrees below average. For next Tuesday, high temperatures for the deserts will be a few to around 5 degrees above average with the valleys and inland coastal areas still a few to around 5 degrees below average. High temperatures for next Tuesday will range from the lower 70s near the coast to the mid 80s to mid 90s for the Inland Empire with 106 to 110 for the lower deserts.

The marine layer continue to slowly decrease in the depth to around 2000 feet for the middle of next week with coastal low clouds not spreading as far into the valleys late each night.

Mean precipitable water values will increase to around 0.9 inch by early Monday, then decrease to around 0.70 inch for the middle of next week. While there could be some mid and high clouds at times, most ensemble members are dry and those that have any precipitation are very light. NBM daily chances for measurable precipitation remain at less than 5 percent for the next week.

Mountains/Deserts

Winds out of the west to southwest increase this afternoon with gusts 20-30kts expected along desert slopes and isolated gusts up to 45kts in mountain passes after 22Z. MOD up/downdrafts and LLWS over and east of the mountains will be possible. Low clouds moving in after 05Z will obscure terrain in clouds/fog on the coastal mountain slopes below 4500 ft MSL through Thursday morning. Otherwise, VFR conditions expected through the period.

MARINE

No hazardous marine conditions are expected through Monday.

SKYWARN

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

SGX WATCHES/WARNINGS/ADVISORIES

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