A significant heatwave is forecasted to affect the US next week, resulting from the combination of two heat domes. The heatwave is expected to bring high heat index values to a large area of the country. Affected regions will include the Gulf Coast and the Southern Great Lakes, with heat index values ranging from 100 to 110.

Further information on this developing weather situation is available from KTSM 9 News, the local NBC affiliate in El Paso, Texas.