Distance and latitude/longitude coordinates are displayed when you mouse over the map. The origin for distance measuring is indicated by a red dot and defaults to either your location, if specified and in range, or the location of the radar/the centre of the map. The origin may be changed by clicking elsewhere on the map.
Location Radar Type Typical Availability
10:32 EST A huge tornado has killed at least 37 people and destroyed hundreds of homes in parts of Oklahoma City.