The corrected sentence would be:
'Well, you may be aware of thunderstorms’ potential to cause lightning damage, but you might not know that thunderstorms can also result in devastating flash floods.'
The corrected sentence states that while you may be aware of the potential for lightning damage during thunderstorms, you might not know that thunderstorms can also lead to devastating flash floods.
To fix the plural and possessive errors in the sentence, change 'thunderstorm’s' to 'thunderstorms' and 'flood’s' to 'floods'.
To fix the plural and possessive errors in the sentence 'Well you may be aware of a thunderstorm’s potential to cause lightning damage, you might not know a thunderstorm can also result in devastating flash flood’s,', we need to make the following corrections:
- Change 'thunderstorm’s' to 'thunderstorms' to remove the possessive error.
- Change 'flood’s' to 'floods' to correct the plural error.