ANSWER:

This is baseless.

https://islamqa.info/en/answers/10301/the-emergence-of-the-mahdi

QUESTION: Is it true that when there will be a solar eclipse and a lunar eclipse on the first day of Ramadan, then Imam Mahdi will come

Signs of the Hour | November 16, 2023 7:42 am
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QUESTION: Is it true that a 3 year drought will appear as a sign of judgement day? Are there any evidence supporting this?