Wildfire Suppression Difficulty Index 90th Percentile 2024 (Image Service)
<div>Wildfire Suppression Difficulty Index (SDI) 90th Percentile is a rating of relative difficulty in performing fire control work under regionally appropriate fuel moisture and 15 mph uphill winds (@ 20 ft). <br /></div><div><br /></div><div>SDI factors in topography, fuels, expected fire behavior under prevailing …