Residents of the Big Island and surrounding areas should prepare for potentially severe weather conditions, including heavy rainfall, flooding, and mudslides, particularly in steep terrain. Coastal areas may experience storm surges of 1 to 3 feet, accompanied by large waves. Tropical-storm-force winds could be significantly stronger in elevated areas and windward sides of hills and mountains. Life-threatening surf and rip currents are expected to impact east-facing shores starting Friday, spreading westward through the weekend.