The second largest Greek island was taken by surprise by torrential rains and overflowing rivers.
Over 1,700 migrants landed on Lesbos and four other Greek islands in the Aegean from Turkey over the past week.
The number of migrants the islands of Lesbos, Samos, and Chios exceed their migrant camps' capacity sevenfold.
The alleged harassment that forced Tsipras's chopper to manuever came as he was heading for an event celebraing the anniversary
At least 60 people have been killed and over 100 have been injured in wildfire raging near Athens leading Greece