This study examined the effects of anticipated service interruptions on natural disaster preparedness intentions. In a 3 × 2 × 2 factorial experiment, students were exposed to scenarios with varied levels of anticipated basic service interruption (no mention, low, high), and person-relative-to event (PrE) factors shown to affect preparedness (low, high), across 2 types of disaster (earthquake, flood). Results indicated no main or interaction effects related to type of natural disasters, significant main effects for levels of PrE and service interruption, and a significant PrE × Service Interruption interaction. Anticipated service interruption affected preparedness, regardless of level of PrE. Bringing service interruption into awareness increases willingness to prepare, suggesting that public-health efforts should include messages regarding potential interruption of services.