Area Forecast Discussion
Issued by NWS San Diego, CA
Issued by NWS San Diego, CA
999 FXUS66 KSGX 291044 AFDSGX Area Forecast Discussion National Weather Service San Diego CA 344 AM PDT Wed May 29 2024 .SYNOPSIS... Generally seasonal weather will prevail into next week. There will be a warming trend through Thursday with inland high temperatures on Thursday around 4 to 8 degrees above average for inland areas. Not much change for Friday, then a few degrees cooler for the weekend. A gradual warming trend for the early and middle part of next week with high temperatures Thursday of next week slightly warmer than Thursday of this week. There will be gusty southwest to west winds for the mountains and deserts for each late afternoon through late evening with the stronger gusts to 25 to 35 mph. The marine layer will generally fluctuate between 2000 and 2500 feet deep with night and morning coastal low clouds spreading into portions of the valleys. && .DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE... SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO COUNTIES... .SHORT TERM (Today through Friday)... Generally seasonal weather will prevail into next week with night and morning coastal low clouds spreading into portions of the valleys, gusty southwest to west winds for the mountains and deserts for each late afternoon through late evening, and temperatures fluctuating around average. The marine layer early this morning is around 2000 to 2500 feet deep with coastal low clouds extending inland into portions of the inland valleys. The warming trend will continue into Thursday with high temperatures today a few degrees warmer than Tuesday for most areas with the greater warming on Thursday, as much as 4 to 8 degrees warmer than today for the mountains. With the warming, Thursday high temperatures for the mountains and deserts will be around 4 to 8 degrees above average with the valleys a few degrees above average and locations near the coast around average. With the warming, high temperatures for the lower deserts will be around 100 to 106 on Thursday with the Inland Empire mostly in the 80s. Not much change in high temperatures is expected for Friday. The marine layer will be a little shallower for tonight into Thursday morning with coastal low clouds not spreading as far into the inland valleys with not much change for Thursday night into Friday morning. && .LONG TERM (Saturday through Tuesday)... High temperatures for the weekend will be a few degrees cooler with high temperatures on Sunday a few degrees above average for the deserts and a few degrees below average for the coast. This will be followed by a gradual warming trend with high temperatures for Thursday of next week near to slightly higher than those for Thursday of this week. Night and morning coastal low clouds will spread a little farther inland into the inland valleys for the weekend, then not as far into the valleys by the middle of next week. && .AVIATION... 290930Z...Coast/Valleys...Low clouds with bases 800-1200 feet MSL with tops to 2000 feet will continue to fill nearly all of the coastal basin by 14Z. Vis 0-5SM in inland valleys. Scatter out from inland toward the coast 16-20Z, but with brief, partial and intermittent clearing at the coast. Low clouds will march inland after 01Z, but will be slightly lower, around 600-1000 feet MSL and not reach as far inland by 12Z Thursday. Mountains/Deserts...Mostly clear today and tonight. Areas of gusty westerly winds 30-40 knots on desert mountain slopes and locally into the deserts after 22Z. && .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. && $$ PUBLIC...17 AVIATION/MARINE...MM