The urban heat-island effect does help to create thunderstorms. But mostly downstream from a city. Rainfall maps across Texas show slightly higher precipitation amounts downstream of most Texas cities, but it's more noticeable with cities the size of Dallas-Fort Worth.  -   Mark Murray     Quotes
The urban heat-island effect does help to create thunderstorms. But mostly downstream from a city. Rainfall maps across Texas show slightly higher precipitation amounts downstream of most Texas cities, but it's more noticeable with cities the size of Dallas-Fort Worth. Mark Murray