'Dogwood' and 'Cactus' will improve your weather forecast

At 8 a.m. ET Tuesday, two new supercomputers came online. These new computers, called Dogwood and Cactus, will improve weather and climate forecasts, according to the National Oceanic and Atmospheric Administration.

"This is a big day for NOAA and the state of weather forecasting," said Ken Graham, director of NOAA's National Weather Service.