Hennen says that puts another 44 million people under threat of some kind of severe weather.

CNN: Bracing for Round 3: 53 million under severe weather threat

Lightning can reach the parched soil and possibly ignite additional fires, according to Hennen.

CNN: Crews go on offensive against growing Colorado wildfire

CNN's Greg Botelho, Dave Hennen, Brandon Miller, Amanda Watts and Jake Carpenter contributed to this report.

CNN: July 7, 2012 -- Updated 0222 GMT (1022 HKT)

Washington could see a crippling 10 inches of snow, CNN meteorologist Dave Hennen said.

CNN: 'Snowquester' shuts down Washington, snarls air travel

About 9 million people live in the region, says CNN Meteorologist Dave Hennen.

CNN: Bracing for Round 3: 53 million under severe weather threat

CNN's Michael Martinez, Tina Burnside, Phil Gast, Darrell Calhoun, Josh Levs, Shawn Nottingham, Dave Hennen, and Sarah Dillingham contributed to this report.

CNN: Family films frantic escape from Colorado wildfire

CNN's Ivan Cabrera and Dave Hennen contributed to this report.

CNN: 30 million in path of winter storm