Marine Weather and Tide Forecast for North Tustin, CA

DISCUSSION
FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE...
SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO COUNTIES...

.SHORT TERM (Today through Friday)...
Strengthening high pressure aloft will bring dry weather with a warming trend that will continue through Monday of next week. High temperatures will warm as much as 15 to 20 degrees today for the mountains. Inland areas will warm another 5 to 10 degrees on Thursday and most areas will warm another few to around 5 degrees on Friday.

With the warming, high temperatures on Friday will be a few degrees above average near the coast to 8 to 12 degrees above average for inland areas. High temperatures on Friday will range from around 70 near the coast to the mid 80s to lower 90s for the Inland Empire with 102 to 106 for the lower deserts.

While there will be substantial inland warming into next week, onshore flow and the marine layer will keep coastal areas cooler with much less warming than for inland areas. Night and morning coastal low clouds will begin to return for tonight into Thursday morning and continue into the weekend.

.LONG TERM (Saturday through Tuesday)...
The warming will continue through Monday with high temperatures on Monday as much as 12 to 18 degrees above average for the mountains, deserts, and far inland valleys. High temperatures for Monday of next week will range from the lower 70s near the coast to the 90s to around 100 for the Inland Empire with the lower deserts 105 to 110. Cooling will begin to spread inland on Tuesday as high pressure aloft begins to weak and onshore lower-level flow strengthens.

The peak of the Heat Risk for inland areas is on Monday of next week, sufficient for an Extreme Heat Warning for the lower deserts and possibly a Heat Advisory for the Inland Empire.
Tuesday will be nearly as hot as Monday for the lower deserts.

The heat is mostly expected to remain below record levels, but a few mountain locations could set records for warmest low temperatures during the weekend into early next week.

AVIATION
060930Z
Coast/Valleys
SCT to locally BKN clouds between 2500-6000 feet MSL will continue in somewhat random coverage this morning. New cigs around 2500 feet MSL have a 30% chance of developing in coastal areas before 15Z. Mostly clear skies after 16Z. Low clouds around 1500-2000 feet MSL to return vicinity KSAN 01- 5Z before spreading into all coastal areas by 12Z Thursday.

Mountains/Deserts...SCT to locally BKN low clouds based 3500-6000 feet MSL on coastal slopes through 16Z. SCT clouds between 9000- 12000 feet MSL over mountains 17-01Z.

MARINE
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.