An electric transformer exploded in a market during a storm in Thailand.

Footage shows sparks crackling from the device as heavy rain battered the Bang Pu Industrial Market in Samut Prakan province on September 21.

An onlooker said the explosions died down on their own.

Thailand and neighbouring countries in Southeast Asia are in their annual monsoon rainy season which sees soaring temperatures followed by powerful rain storms in the afternoon leading to widespread flash floods.

Bangkok and large parts of the north and northeast of the country have been swamped with flash floods from tropical thunderstorms.

An electric transformer exploded in a market during a storm in Thailand.

Footage shows sparks crackling from the device as heavy rain battered the Bang Pu Industrial Market in Samut Prakan province on September 21.

An onlooker said the explosions died down on their own.

Thailand and neighbouring countries in Southeast Asia are in their annual monsoon rainy season which sees soaring temperatures followed by powerful rain storms in the afternoon leading to widespread flash floods.

Bangkok and large parts of the north and northeast of the country have been swamped with flash floods from tropical thunderstorms.