...A RED FLAG WARNING REMAINS IN EFFECT THROUGH TODAY DUE TO GUSTY SANTA ANA WINDS AND VERY LOW DAYTIME RELATIVE HUMIDITY FOR ALL MOUNTAINS AND VALLEYS...INLAND ORANGE COUNTY...AND THE SAN GORGONIO PASS...

* WINDS...North 15 to 25 mph with gusts to 40 mph.

* RELATIVE HUMIDITY...As low as 10 percent.

* IMPACTS...Any wildfires that develop will likely spread rapidly. Dry vegetation. Outdoor burning is not recommended.

* LOCATION...Santa Ana Mountains-Including The Trabuco Ranger District of the Cleveland National Forest and Orange County Inland Areas.

* WHAT...The South Coast AQMD has issued an air quality alert due to increased fine particle pollution from wildfire smoke. The South Coast AQMD has issued a mandatory wood-burning ban for residents in the South Coast Air Basin. The No-Burn rule bans burning wood, pellets, and manufactured fire logs in any indoor or outdoor wood- burning device.

* WHERE...Wildfire smoke in Orange and San Bernardino Counties and wood burning ban in the South Coast Air Basin, which includes Orange County and the non-desert portion of Los Angeles, Riverside and San Bernardino Counties. No-Burn Day alerts do not apply to areas above 3,000 feet in elevation, the Coachella Valley, or the High Desert. Homes that rely on wood as a sole source of heat, low- income households and those without natural gas service also are exempt from the requirement.

* WHEN...Wildfire smoke until 5 pm Friday and wood-burning ban through Friday.

* IMPACTS...Particle pollution can get deep into the lungs and causeserious health problems such as heart attacks, strokes, asthma attacks, and difficulty breathing. Everyone can be affected, but people with lung or heart disease, older adults, people who are pregnant, children, and those who spend a lot of time outdoors are at greater risk.