| The thunderstorms that spin out tornadoes are big clouds with lots of water and ice in them to block sunlight. |
| The rear part of the storm is where tornadoes are likely to spawn as the downdraft in the flanking line meets the rotating updraft. |
| If it is very unstable then thunderstorms or tornadoes can easily form, whereas if it is very stable nothing of the sort would happen. |
| Sornette's discussion of the science of earthquakes, volcanic eruptions, hurricanes, tornadoes and meteorite impacts is riveting. |
| Most tornadoes form under the southwestern section of the thunderstorm cloud. |
| These clouds often bring thunder and lightning, and can also bring funnel clouds or even tornadoes. |
