Was just reading about the Arkansas River way over flood stage in Oklahoma & Arkansas. I lived in Oklahoma for a long time, so am familiar with the issues. One thing was mentioned: someone died when a tree fell over on their house. Probably not from wind. For many locales in this country such an event might seem incomprehensible. Here where I live now you get blowdown, where wind overcomes a tree's root system and blows it over, the root system coming up in plate fashion. But in Oklahoma with its deep prairie soils, days and days of rain can turn any soil to a soupy consistency. Try to stand up a stalk of broccoli in a bowl of soup--it falls over. In normal soils, a tree resembles a stalk of broccoli stuck in cold peanut butter--it's not going anywhere. (I get this analogy from my daughter who didn't like broccoli as a kid--she called it "tree stumps.") But I've seen large trees, especially open-grown oaks with a wide canopy, roll slowly over when the soil holding them becomes soup.