Sunday, May 18, 2025
TODAY’S WEATHER DISCUSSION AND FORECAST
..Sunday, May 18, 2025.
..Current conditions at of 9AM:
..TEMPERATURE-55*, HUMIDITY-62%, WINDS-NE-3-5mph, Clear skies with a few clouds.
..Good Morning.
..After a very damp and Foggy day yesterday, especially along the Rim areas where there was measurable rainfall, today we will have clearing skies along with a warmer and drier day.
..As the area of Low pressure that was over SoCal yesterday moves East today, a Ridge of High pressure will quickly fill in behind the departing Trough.
..Late tonight into tomorrow morning Surface High pressure will build over the Great Basin Region. This will send Northeast winds across the local mountains and Cajon Pass due to a pressure gradient of ~8-10mbs between the Great Basin Region and SoCal. North East Winds from 10-25mph can be expected along the local Ridges, and in the canyons through mid day tomorrow.
..As the area of High pressure now over the Eastern Pacific expands across the Western States, temperatures will be warming up quickly across all of SoCal. ..Daytime high temps will be warming into the upper 70s to possibly 80* by Wednesday and Thursday in the mountains.
..The Valley and Deserts will be in the 90s and maybe a few areas will reach 100*.
..As we head into the Memorial Day weekend, we will see a few degrees of cooling as a weak Trough passes through the PAC-NW.
..Daytime highs for the weekend will be in the mid 70s for the mountains.
..Onshore flow will help to deepen the Marine layer with morning fog and low clouds possible into the IE over the weekend. The Mountains should remain clear and above the Marine layer.
..LOOKING OUT FURTHER:
..AS it looks now, we will remain in a more stable weather pattern through the first of June. RC*
..Thank you for joining me here at www.lakegregoryweather.com
..*My forecast and weather outlooks are derived from what I think will be the most likely outcome based on the most current information available.
