Ation DISCUSSION,
.SHORT TERM (Today through Thursday), A low pressure system over central California late Monday afternoon will move into central Nevada by this morning, then weaken and move east today with low pressure across California weakening through Friday.
Early this morning, the marine layer has deepened to around 4500 feet with satellite imagery showing coastal low clouds extending well inland and onto the coastal slopes of the mountains. There could be some patchy drizzle for some of the coast and valleys through around day break. The marine layer will then become gradually shallower into next week, but with coastal low clouds still spread into portions of the inland valleys late each night.
High temperatures for the deserts will be a few degrees cooler today with not much change for the coast and valleys. These high temperatures are as much as 15 degrees below average for the mountains and Inland Empire. 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 mid to upper 90s for the lower deserts.
This will be followed by a slow warming trend that will continue into the middle of next week. High temperatures for the deserts will warm to around average during the weekend, but remain below average for the coast and valleys through Tuesday of next week.
High temperatures for today will be as much as 15 degrees below average for the mountains and Inland Empire. This will be followed by a slow warming trend through the middle of next week with high temperatures for the deserts warming to around average over weekend, but remaining a few to around 5 degrees below average for the coast and valleys for early next week. After today, the marine layer will become a little shallower with night and morning coastal low clouds spreading into portions of the inland valleys late each night.
For extreme southwestern California including Orange, San Diego, western Riverside and southwestern San Bernardino counties,
, UPDATED AVIATION DISCUSSION,
(today through Thursday), A low pressure system over central California late Monday afternoon will move into central Nevada by this morning, then weaken and move east today with low pressure across California weakening through Friday.
Early this morning, the marine layer has deepened to around 4500 feet with satellite imagery showing coastal low clouds extending well inland and onto the coastal slopes of the mountains. There could be some patchy drizzle for some of the coast and valleys through around day break. The marine layer will then become gradually shallower into next week, but with coastal low clouds still spread into portions of the inland valleys late each night.
High temperatures for the deserts will be a few degrees cooler today with not much change for the coast and valleys. These high temperatures are as much as 15 degrees below average for the mountains and Inland Empire. 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 mid to upper 90s for the lower deserts.
This will be followed by a slow warming trend that will continue into the middle of next week. High temperatures for the deserts will warm to around average during the weekend, but remain below average for the coast and valleys through Tuesday of next week.
(Friday through Monday), There will be a gradual warming trend that will continue into next week. High temperatures on Friday will be a few degrees below average for coastal areas and the lower deserts and around 4 to 8 degrees below average elsewhere. High temperatures on Friday will range from the lower 70s near the coast to the 80s for the Inland Empire with 100 to 104 for the lower deserts.
For Monday of next week, high temperatures for the coast and valleys will be a few to around 5 degrees below average with the deserts a few to around 5 degrees above average. High temperatures for next Monday 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.
300945z. Coast/Valleys/Foothills, Low clouds with bases 2500-3500 ft MSL and tops to 4500 ft MSL will continue to fill in across the coastal basin through 09Z. There is a 10-15% chance of patchy drizzle through 18Z, with the greatest chances near the coast. Clouds scatter out 16-19Z Tuesday. Low clouds will redevelop over the coastal areas 23-05Z with bases/tops around 1800-2500 ft MSL, spreading into the inland valleys again Tuesday night.
.Mountains/Deserts, Southwest to west winds with surface gusts 20-35 kts with local gusts to 45 kts through the passes slowly weakening through 17Z. Winds strengthen again around 22-00Z this afternoon with similar gusts, weakening early Wednesday morning. MOD- STG up/downdrafts and pockets of LLWS over and east of the mountains.
No hazardous marine conditions are expected through Saturday.
Ca, None. PZ, None.
