July 11, 2014; 5:01 PM ET
After only spotty rainfall this weekend in the Philadelphia area, the risk of severe thunderstorms and flash flooding will ramp up quickly early next week. more >
Thunderstorms, some heavy, late Monday night through Tuesday afternoon; storms can be severe
A new map shows the path of H1N1 "swine flu" as it spread across the United States in the fall of 2009, when the brunt of the pandemic hit the country.