Unexpected weather is postponing the burning the North County home, described as a “bomb factory,” until approximately 11 a.m.

Authorities want to make sure winds don’t blow the smoke over nearby homes. People in dozens of nearby residences have been urged to evacuate and Interstate 15 will be shut down during the operation.

Bob Card, San Diego County air pollution control officer, will make the call of when the plan is a-go. “Well the meteorologist are here to make sure we have good ventilation so it will disperse the smoke so we don’t experience low level impacts.”

Authorities say fire is the only safe way to incinerate unstable chemicals discovered at the house last month after a gardener was hurt in an explosion.