What does isolated thunderstorm mean in weather forecast?

Isolated thunderstorm [English] [? Answer? sle？ t？ d？ θ? ndst？ : m][ America] [? Answer? slet？ d？ θ? ndst？ rm]

Local storm;

Isolated [English] Answer? s？ Le? t？ D][ America] [? Answer? slet？ d]

Isolated; Loneliness; Alone; Remote;

Verb (abbreviation of verb) isolate (isolated past tense and past participle); Isolation; Insulation; Disengage;

Confused word: isolation

Example:

1.

It has become one of the poorest and most isolated countries in Asia.

Now Myanmar has become one of the poorest and most isolated countries in Asia.

2.

During the test, he was immediately quarantined.

The boy was immediately quarantined when he was examined.