Explanation:
It is against the "rules" of the English language to begin a sentence with a preposition, an adverb or conjunction.
The correct sentence should be; Meterologists from every news outlet issued warnings for T. storms and flooding. The mayor made the decision to postpone the city marathon.
The above sentences are considered to be run- on sentences. In order to get straight to the point without boring the reader, 2 statements are required.
