SHELDUS SHELDUS is a county-level hazard data set for the U.S. and covers natural hazards such as thunderstorms, hurricanes, floods, wildfires, and tornados as well as perils such as flash floods, heavy rainfall, etc. **Users must use their UNT email address to register and gain access. **When viewing records you must select an aggregation. Any attempt to access the raw data is not included in the subscription.