It was a down week for the municipal market, and the DeKalb downgrade stoked fears that highly rated municipal securities could suddenly come under pressure.
More and more pressure is being put on the AAA-rated countries of the North to help the South, but in exchange they want southern Europe to re-engineer their economies - a painful process that challenges not just budgets but culture.
Tornados are rated on several scales for strength based either on wind speed, pressure drop, or damaged caused, but the updated Enhanced Fujita Scale is the presently accepted scale in the United States.