It's (almost) so hot corn is popping in Montgomery County

It's so hot corn is popping outside in Montgomery County. (Twitter/Montgomery County Fire Dept.)

UPDATE (3:12 p.m.): Montgomery County firefighters say what many Fox 5 viewers suspected: that the stalk of popcorn photo they shared is a fake. Sick burn, firefighters.

The heat index is expected to reach up to 110 degrees Saturday, and an excessive heat warning is in effect until 9 p.m.