A massive chemical leak spewed toxic orange plumes of dangerous acid into the sky, forcing a no-fly zone and mass evacuations near an explosive plant in Ohio, according to reports. 

About 3,000 gallons of nitric acid was released from an enormous tank at the Austin Powder Red Diamond Plant in McArthur – which manufactures explosives used for mining and construction – around 8:30 a.m. Wednesday, a Vinton County spokesperson told WLWT.

Spillage from the 5,000-gallon tank caused officials to evacuate nearby roadways and the Village of Zaleski, home to about 750 residents, with a shelter set up at Vinton County High School for evacuees, the Vinton County Sheriff’s Office said.  

The Federal Administration Authority also enforced a temporary 30-nautical-mile flight restriction around the hazardous site until Thursday, the outlet reported. 

The order reportedly excludes relief flights. 

Photos of the dangerous incident showed eerie orange, brown-colored haze wafting in the clear blue morning air.

The cause of the leak, which has since stopped, remains unknown, according to the Ohio EPA, which responded to the noxious scene.

Exposure to nitric acid can cause severe burns to the eyes, skin, and respiratory system, dizziness and drowsiness. Chemical burns may also cause the skin to turn yellow, according to the Centers for Disease Control and Prevention. 

Inhalation can permanently damage mucous membranes and lungs, leading to fluid buildup in the lungs and other breathing problems.

Officials urged those exposed to the pernicious toxin to flush their eyes with water, clean their skin and contact a doctor if symptoms persist. 

No injuries have been reported.

The harmful plume is now heading south of the facility as wind conditions around the area have increased, Fox Weather reported.

Wind patterns and air quality will dictate when evacuation orders can be lifted, emergency officials told Fox.