Assertion: thunderstorm's rainfall | /r/Causes | flash flooding
Facets:
value: under the right conditions
type: MANNER
Source sentences:
text: Under the right conditions, rainfall from thunderstorms causes flash flooding.
text: This rainfall can occur within a very short period of time, causing flash floods.
text: Under the right conditions, rainfall from thunderstorms causes flash flooding, killing more people each year than hurricanes, tornadoes or lightning.