1. Oklahoma tornadoes kill 4; state of emergency issued amid damage  The Associated Press
2. Midwest, Plains Tornado Outbreak: 4 Killed Amid Devastation – Videos from The Weather Channel  The Weather Channel
3. Oklahoma towns hard hit by tornadoes begin long cleanup after 4 killed in weekend storms  Leader-Telegram
4. ‘Damage Is Unbelievable': Devastation Seen In Sulphur, Murray County, After Saturday Storms  News On 6
5. Okla. counties in state of emergency after deadly tornadoes; severe thunderstorms head to Texas  Yahoo! Voices

Source: Google Finance – Market News