President Donald Trump has used a primetime address to the nation to once again raise doubts about the results of past ...

The Pima County Sheriff's Department hosted its annual Active School Shooter Preparedness Workshop. Officers and deputies ...

The United States intensified its strikes on Iran, hitting targets farther north. American forces also fired into a ship they ...

A new discovery from University of Arizona could help keep future power plants and space missions running longer and safer.

Click here to view this video from kvoa.com.

Click here to view this video from kvoa.com.

At 650 PM MST, Doppler radar indicated thunderstorms producing heavy rain across the warned area which extends from Three ...

The National Park Service is asking the public to comment on a new fire plan for Grand Canyon National Park. ...FLASH FLOOD ...

Storms will continue after sunset. Isolated rainfall totals of 1 to 3 inches are possible. - PRECAUTIONARY/PREPAREDNESS ...

Click here to view this video from kvoa.com.

News 4 Tucson is wrapping up its Lifesaver Campaign with final free swim lessons at the Ott YMCA. ...FLASH FLOOD WARNING ...

The National Weather Service in Tucson has issued a * Flash Flood Warning for... South Central Pima County in southeastern ...