The volcanic ash from the eruption of Mount Raung in East Java has lead to the cancellation of 250 flights and thousands of tourists stranded in Bali on 10 July 2015. Flights have to be cancelled due to reduced visibility from the volcanic ash which posed a hazard in landing.
As posted earlier the outbreak of diseases such as MERS also affected tourist arrivals e.g. in South Korea.
The economic situation of Greece has also discourage tourist arrivals. What other situations can you think of that affects tourist arrivals?