Area Forecast Discussion
Issued by NWS San Diego, CA
Issued by NWS San Diego, CA
485 FXUS66 KSGX 100940 AFDSGX Area Forecast Discussion National Weather Service San Diego CA 240 AM PDT Mon Jun 10 2024 .SYNOPSIS... Night and morning low clouds will continue west of the mountains this week. High pressure aloft will bring warmer days to the valleys, mountains and deserts through Wednesday. Thursday and Friday will be slightly cooler, then warmer again next weekend. && .DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE... SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO COUNTIES... A quasi-stationary upper low will spin off the Southern California coast through Wednesday. This trough combined with an intermittent coastal eddy will keep the marine layer depth between 2000-2500 ft deep this week, with low clouds spreading into the valleys each night retreating back to the coast each afternoon. The upper trough will also bring scattered mid and highs clouds. An upper ridge centered over Arizona today through Wednesday will bring warmer days to the deserts, mountains and some of the inland valleys. Tuesday will be the hottest day with high desert highs near 100, lower desert highs from 105-110, and mountain highs in the 80s. On Thursday and Friday upper low off the coast trundles eastward across SoCal for a few degrees of cooling. Then warmer again next weekend behind the departing trough. && .AVIATION... 090830Z...Coast/Valleys...Low clouds will cover coastal areas, San Diego County valleys and west and south parts of the Inland Empire, with bases 1500-2000 ft MSL and tops to 2300 ft MSL. Areas of higher terrain will be obscured through 17Z Mon, but only local VIS 2-4 miles will occur below the cloud bases with other areas over 5 miles. Clearing will occur 15Z-17Z in the valleys and 17Z-20Z near the coast with local BKN conditions this afternoon near the coast. Low clouds will spread inland more slowly tonight and only reach the far west and south parts of the Inland Empire by 12Z Tue with slightly lower bases. Clearing times will be similar Tue morning. Mountains/Deserts...Occasional SCT clouds at/above 25000 ft and unrestricted VIS will continue through Tue morning. && .MARINE... No hazardous marine conditions are expected through Friday. && .SGX WATCHES/WARNINGS/ADVISORIES... CA...None. PZ...None. && $$ PUBLIC...Moede AVIATION/MARINE...Maxwell