article_snippet.sent: Forecasters cautioned millions of people in Middle America to keep an eye to the sky Wednesday and Thursday amid threats of hail, high winds and strong tornadoes.
article_snippet.sent: The Storm Prediction Center, in a midday update to The Storm Prediction Center forecast Wednesday, upgraded to The Storm Prediction Center second-highest advisory level - a moderate risk - while stressing that a significant tornado or two could form in a narrow stretch from northern Oklahoma to central Missouri.
article_snippet.sent: Some 34 million Midwesterners have been warned of possible powerful tornadoes as a dangerous thunderstorms pummeled the region Wednesday and into Thursday .
article_snippet.sent: Fewer than 1 million people were in Wednesday's 'moderate risk' area between Wichita, Kansas, and Jefferson City, Missouri, but 34 million were under at least a slight risk of seeing damaging winds, large hail and possibly a tornado.
article_snippet.sent: Forecasters said 57 million people were at an 'enhanced risk' of seeing storms nearby, including residents in Chicago, Detroit and St. Louis, as well as those in Memphis, Tennessee, and Little Rock, Arkansas.
article_snippet.sent: The Storm Prediction Center said Wednesday's storms in the southern Plains could be significant - defined as having 2-inch hail, 75 mph winds and tornado damage rated at EF2 or higher.
article_snippet.sent: Forecasters said 57 million people were at an 'enhanced risk' of seeing storms nearby, including residents in Chicago, Detroit and St. Louis, as well as those in Memphis, Tennessee, and Little Rock, Arkansas .
highlights_snippet.sent: Experts warned that millions were under a moderate tornado threat Wednesday evening into Thursday .