It is a constant climate feature throughout the year. It is a seasonal weather feature with irregular occurrences. It is a continuous weather feature during the season in which it occurs. It is a rare event inconsistent with local climate and weather.
I gave my students this multiple choice question: On August 21, a flash flood warning was issued for the Las Vegas area. Which statement best describes this warning in terms of weather and climate?

Only one answer is correct among these 4 choices:
- It is a constant climate feature throughout the year.
- It is a seasonal weather feature with irregular occurrences.
- It is a continuous weather feature during the season in which it occurs.
- It is a rare event inconsistent with local climate and weather.

Could you tell me which one is correct?

It is a seasonal weather feature with irregular occurrences.