>> have a good day. >> nice to see you. have a great day, great morning, everyone. >> good morning, it is monday, march 19th. i'm melissa francis in for gretchen carlson. extreme weather alert, tornado touching down in nebraska one hour ago, and mother nature is just getting started. there's snow in arizona. what? the latest on the wild weather in just seconds. >> wait a minute, spring starts tomorrow. meanwhile, mitt romney has 20 more reasons to smile this morning after winning the island of puerto rico, their primary. rick santorum says tomorrow is another day. >> if we're able to come out of illinois with a huge or surprise win, i guarantee you, i guarantee you we will win this nomination. >> but did rick santorum forget about the deal he made with romney's campaign? it could cost him the state. details straight ahead. >> all right.

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