Jul 2, 2013 12:06 PM by Sarah Sanchez
PRESCOTT - Higher humidity overnight helped make conditions at the deadly Yarnell Hill Fire less dangerous, according to officials.
The blaze still has no containment and thunderstorms with a lot of lightning are a major threat because of dry vegetation, fire spokeswoman Karen Takai said.
The winds may be calm this morning but thunderstorm cells are already visible, Takai said.
Approximately 500 firefighters are on the scene and more are on the way, Takai said.
Nearly 8,500 acres have been charred in the Yarnell Hill Fire, which is about 13 square miles.
The fire claimed the lives of 19 firefighters Sunday when they were surrounded by flames.
News 4 Tucson has a crew in Yarnell and will provide updates as they become available.