The flooding poses a significant threat to life and property, with officials describing it as a 'potentially catastrophic flood event.' Extensive damage is expected, with over 500 homes and 150 miles of road already impacted by previous flooding in the region. The current flooding is anticipated to surpass those levels, with major rivers reaching historic crests. Evacuations are mandatory in several counties, and residents are urged to leave immediately. Travel in affected areas is hazardous, with many roads closed due to flooding and heavy snowfall in higher elevations. Emergency response efforts may be limited during the peak of the storm, further increasing risks.