What are isolated thunderstorms?
I am sorry Esmeralda but you will most likely see isolated thunderstorms in places where local factors create isolated thunderstorms. That could be e.g. the coastal effect in a see breeze that ends up with local isolated thunderstorms when enough moist air from the sea has been warmed up by the land. Another possibility is the orographic effect of a montain. The air rising effect of the terrain will then be local and the resulting thunderstorms be isolated. In a frontal structure, only the cold front is likely to form a belt of thunderstoms as the cold air coming from under is lifting the front. That will probably not be isolated but more consistent thunderstorms but … “isolation” is a subjective word, isn’t it? What is isolated for one weatherman may not be so for another.