A thunderstorm hit my neighborhood hard on an evening in July . It suited my mood . I raised my umbrella and walked outside . The rivers on the streets were warm ; the rivers on the sidewalks were cool .
What might be a good reason not to walk outside with an umbrella right now ?
Pick the best answer from the following options:
- My umbrella might be swept away by the tornado winds .
 - None of the above choices .
 - The rivers on the streets might cause hypothermia .
 - There may be lightning associated with the thunderstorm .


There may be lightning associated with the thunderstorm .