According to authorities, lightning from storms sparked a fire in salt marshlands at the Anahuac National Wildlife Refuge near Anahuac around 5:30pm Friday.
At last check, authorities with the Anahuac National Wildlife Refuge said the fire was going on about 600 acres. They have crews fighting the blaze with special equipment used for marsh fires.
Humidity kept the smoke close to the ground and wind carried it toward Galveston County on Saturday morning.
The smoke is now moving north into Liberty, Polk and San Jacinto Counties.
Officials suggest that anyone prone to any respiratory illness stay indoors until the smoke lifts.