• A low cloud moves over a farm near Gypsum, Kan., Tuesday, April 26, 2016. Thunderstorms bearing hail as big as grapefruit and winds approaching hurricane strength lashed portions of the Great Plains on Tuesday. The area is expecting severe weather. (AP Photo/Orlin Wagner)

    After fanfare, forecasters review talk of storm ‘outbreak’

    LITTLE ROCK, Ark. (AP) — After warning for days about violent storms that could rake the central U.S. with huge hail, high winds and strong tornadoes, forecasters will review whether the messages they sent were appropriate for severe weather that some considered a “bust” because the tornadoes that did develop were small.

  • In this April 27, 2011, file photo a deadly tornado moves through Tuscaloosa, Ala. On April 27, 2011, a series of tornadoes killed hundreds of people, injured thousands and reduced countless buildings to rubble across a swath of the U.S. More than 120 tornadoes were reported that day - one of the deadliest outbreaks in the nation's history. (Dusty Compton/The Tuscaloosa News, via AP, File)  MANDATORY CREDIT

    Tornado outbreak, 5 years later: Piecing lives back together

    BIRMINGHAM, Ala. (AP) — On April 27, 2011, a series of tornadoes killed hundreds of people, injured thousands and reduced countless buildings to rubble across a swath of the U.S.

  • Lightning illuminates the sky over the Marion County Courthouse in Marion, Kan., Tuesday, April 26, 2016. Thunderstorms bearing hail as big as grapefruit and winds approaching hurricane strength lashed portions of the Great Plains on Tuesday. (AP Photo/Orlin Wagner)

    Storms on Tuesday could bring powerful tornadoes to Plains

    OKLAHOMA CITY (AP) — Thunderstorms bearing hail as big as grapefruit and winds approaching hurricane strength lashed portions of the Great Plains on Tuesday, but arrived without the destructive tornadoes that many had worried about for days.

  • In this May 31, 2013 file photo, a tornado forms near Banner Road and Praire Circle in El Reno, Okla. Forecasters are finding that the human mind is more difficult to predict than a stormy atmosphere. As the nation's midsection braces for bad weather Tuesday, April 26, 2016, researchers are still trying to determine when to raise a general alarm with the public, so warnings will be more effective. The National Weather Service has even brought on a social scientist to help. (AP Photo/Alonzo Adams, File)

    How early is too early for word that tornadoes may come?

    NORMAN, Okla. (AP) — Meteorologists are finding something much tougher to forecast than a stormy atmosphere: the human mind.