This is the shocking moment a shop sign collapsed in a hail of sparks during a storm in Thailand.

Footage shows the large metal sign plunging from the roof of an electrical equipment company in the Hat Yai District of Songkhla province amid heavy rain on May 5.

The debris littered the shop's entrance and caused electricity to briefly flicker, while a tent was seen being swept across the street by the gale.

Thailand and neighbouring countries in Southeast Asia are at the start of their annual monsoon rainy season which sees soaring temperatures followed by powerful rain storms. The rudimentary infrastructure often struggles with the deluge, leading to widespread flash floods.

The Meteorological Department warned of freak tropical storms sweeping the country.