| A | B |
|---|
| Fujita Scale | is a scale for rating tornado intensity, |
| Probes | Rugged and loaded with instrumentation, these portable weather stations collect tornado data near the ground where radar can't reach. |
| Dry Line | where the cold air meet the warm air. |
| dew point | the temperature to which a given parcel of humid air must be cooled, at constant barometric pressure, for water vapor to condense into water. |
| Updraft | the movement upward of air |
| Supercell | a thunderstorm that is characterized by the presence of a mesocyclone: a deep, continuously-rotating updraft |
| Funnel Cloud | is a funnel -shaped cloud of condensed water droplets, associated with a rotating column of wind and extending from the base of a cloud |
| isobar map | Separating different pressures |
| Baromenter | Measures pressure |
