Violent weather in the Plains and Midwest ranged from tornadoes, intense drought and life-threatening flooding.
Despite its devastation, the Moore tornado helped showcase scientists' progress in providing early warnings.
Major storm brings drought relief to the High Plains after over a year of drought, but abnormally dry conditions linger.
The 2012 Great Plains summer drought was more intense than the Dust Bowl and largely natural in origin, report finds.
An April blizzard is forecast to dump more than a foot of snow in some areas, while igniting severe thunderstorms.
Texas, the Southwest, and California are likely to see another summer of drought, this time with greater water woes.
NOAA's three-month spring outlook forecasts drought in the West, and warns of high-flood risks in the Midwest.
The severe drought ebbed in the Southeast, but water supply concerns are growing amid a dry Western winter.