There were tall rain clouds to my south/southeast as I was traveling southbound through the Eufaula/9 hwy toll booth on the Indian Nation Turnpike. The fireball was as bright as if someone was holding a freshly lit green flare 100-150 feet away and it cut in and out as it went through the clouds. I couldn't get a picture or video but I made sure to count the seconds it lasted and try to mark as many details as I could. I also used my toll booth transponder record to note the time.