The Meteorological and Climatology Agency (BMKG) has warned that several regions in Indonesia might experience extreme weather in the next couple of days.

In a report issued on Wednesday, the agency predicted that on Thursday, some regions in 11 provinces would experience heavy rain with a chance of thunder and strong wind or small tornadoes, namely:

1. West Kalimantan

2. Central Kalimantan

3. North Kalimantan

4. East Kalimantan

5. North Sulawesi

6. Gorontalo

7. Central Sulawesi

8. West Sulawesi

9. Maluku

10. West Papua

11. Papua

Additionally, some areas in seven provinces would experience lighter rain with a chance of thunder and strong wind or small tornadoes, namely Aceh, North Sumatera, West Sumatera, Riau, Jambi, South Sulawesi and North Maluku.

“We observed that the area where strong winds meet or slow down [convergence] will extend from the western waters of West Kalimantan to the western part of East Kalimantan, from the southern Maluku Sea to the northern waters of North Sulawesi, from the eastern waters of Halmahera to northern Halmahera, and from Papua to the southern area of West Papua,” the BMKG wrote in the statement, adding: “These conditions can increase the potential for the formation of rain clouds throughout the area.”