| GCat | Policy and Organization |
| MCat | Disaster Response |
| SCat | Storms |
Fact sheets on thunderstorms & lightning. Tornado safety. How to prepare for potential thunderstorm disasters. Guidance on preventing property damage from severe storms.
Beaufort Scale for Wind Speed, Saffir-Simpson Hurricane Scale Fujita-Pearson Tornado Scale
Use the 30/30 rule to determine when to seek shelter before dangerous lightning approaches
Lightning protection, grounding, bonding, shielding, and surge protection requirements (pdf)
Describes common lightning protection systems, certification, installation, and lightning protection system inspection
A discussion of what constitutes an effective lightning protection system
Large number of articles on safety prevention & the economic impact of lightning strikes
Lightning safety and outdoor activities, the science of thunderstorm development and more
Explains the 30-30 rule and provides guidance on protective measures to take when lightning is present
Full text of the NSSA industry standard for design and construction of storm shelters
Lightning safety guidelines during outdoor activities such as sports practices and events
Guidance on preventing property damage from severe storms
Homeowner guidelines to prevent damage from high winds
Resource materials to improve building tornado protection
Land surface mobile irrigation systems are subject to damage from direct lightning strikes
Guidelines and instructions for building a safe room
After a storm, businesses should conduct a safety hazard evaluation and assessment
The following are general emergency guidelines to help you prevent injuries or fatalities due to severe storms
Tornado safety, chasing, past tornadoes, personal experiences, FAQ and more
What to do before, during and after a hurricane to promote safety
Prevention guide to promote personal health and safety before, during and after a tornado
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