Weba weather forecaster with the national weather service emailed fire managers an unprecedented advance warning on aug. 4, 2023, of the danger that would. Weba weather forecaster with the national weather service emailed fire managers an unprecedented advance warning on aug. 4, 2023, of the danger that would develop. A red flag warning is the highest alert issued by the national weather service for conditions that may result in extreme fire behavior within. Weba weather forecaster with the national weather service emailed fire managers an “unprecedented advance warning” on aug. 4, 2023, of the danger that would.