A subtropical storm system has developed off Southern California and will bring the chance of rain, thunder and lightning to San Luis Obispo County today, the first day of autumn.
Local forecaster John Lindsey says the atmosphere is dry, so any rain that develops may evaporate before reaching the ground. But dry lightning could occur and would pose a fire danger.
The National Weather Service has issued a red-flag alert for the county through 11 p.m. Under the red flag, conditions exist to create brush fires — the possibility of dry lightning combined with gusty winds and vegetation that will easily burn if ignited.
High temperatures today will be in the 90s in the North County and mid-70s in San Luis Obispo.
Lindsey said another storm system will affect the state’s weather this weekend. A low-pressure area will move through Northern California on Sunday, bringing rain as far south as Monterey. While it won’t rain in SLO County, temperatures will cool a bit and winds will pick up.
Lindsey is a community relations representative for PG&E who has more than 20 years of local forecasting experience.