| A | B |
| tornado | measured using Fugita scale |
| hurricane | measured using Saffir-Simpson scale |
| action plan | family emergency outline for preparednes and communication |
| eyewall | strongest hurricane windspeed |
| supercell | strongest potential tornado-producing storm |
| lightning | contains segments called "step leaders" |
| counterclockwise | direction of circulation of cyclones un Northern Hemisphere |
| tropical wave | low pressure trough |
| hurricane | cyclone with winds of at least 74 miles per hour |
| family disaster communication plan | includes contact person and meeting place |
| 30-30 rule | lightning safety tip |
| crouching position | safest position if stranded outdoors during lightning |
| family evacuation plan | includes a variety of evacuation routes |
| coastal areas | prone to hurricane incidence |
| tornado alley | central US plains states prone to cyclonic storms |
| factors influencing flash floods | soil moisture and precipitation intensity |
| safest area during flash flooding | higher ground |
| people struck by lightning | carry no electric charge |
| tropical storm watch | possible winds of 39-74 mph in your area |
| hurricane warning | hurricane cinditions are expected in your area within 24 hours |