Marine Weather and Tide Forecast for Newport Beach, CA

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

.SHORT TERM (Today through Thursday)...
The warming trend will continue through Wednesday with Wednesday high temperatures around 10 to 15 degrees above average for the coast and valleys and around 10 degrees above average for the lower deserts. High temperatures on Wednesday will range from the lower to mid 70s near the coast to the 90s for the Inland Empire with 102 to 107 for the lower deserts. Cooling will begin to spread inland on Thursday with the coast, valleys, and mountains a few degrees cooler than Wednesday.

The sounding from NKX from late Monday afternoon showed a pair of marine inversions, one near 2000 feet and a second, lower inversion near 1400 feet. Satellite imagery shows patchy low clouds moving northward just off the coast of Orange and San Diego Counties. The low clouds and fog may extend locally inland into coastal areas early this morning. Similar coverage is expected for late tonight into early Wednesday morning with increasing low cloud coverage and slight deepening of the marine layer for Wednesday night into Thursday morning.

.LONG TERM (Friday through Monday)...
The cooling will continue to spread inland through Saturday with Saturday high temperatures with a few degrees of average. Saturday high temperatures will range from the mid to upper 60s near the coast to the upper 70s to mid 80s for the Inland Empire with the mid 90s to around 100 for the lower deserts. The marine layer will deepen to around 2500 feet for the weekend. Night and morning coastal low clouds will spread inland into portions of the inland valleys with slower or more limited afternoon clearing near the coast. Sunday may warm slightly followed by minor day to day differences through the middle of next week. Night and morning coastal low clouds will continue to spread into portions of the valleys late each night.

AVIATION
200900Z
Coasts
Satellite shows only a few patchy low clouds with bases 800-1300ft MSL along the Orange County Coast. Low clouds will continue to develop and spread southward through 12z with bases lowering slightly, but remain extremely patchy. Coastal TAF sites may see brief CIGs , mostly likely to occur after 11z with complete clearing by 15z. Brief VIS restrictions possible down to 4-5SM.
Patchy low clouds redevelop again tonight with lower bases, closer to 500-800ft MSL and more VIS restrictions, likely down to 2-5SM for coastal mesas after 07z.

Elsewhere...Clear with unrestricted vis through Tuesday.

MARINE
Gusts may approach 20kts in the outer coastal waters near San Clemente Island Friday afternoon and evening. Otherwise, no hazardous marine conditions 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.