The fury of Isaac slammed into Louisiana with strong winds and pounding rain, generating the first real test early Wednesday of flood control systems and emergency services in New Orleans on the seventh anniversary of Hurricane Katrina.
-- Much of the central Gulf coast was hunkered down as Tropical Storm Isaac approached Tuesday. Authorities across the region warned residents to be prepared for heavy rain, high winds and coastal storm surges.
"A swarm" of several hundred earthquakes, the strongest measuring a 5.5 magnitude, were centered east of San Diego near California's border with Mexico on Sunday afternoon but caused little damage, seismologists said.
Thousands in Louisiana, Mississippi and Alabama were being told early Monday to leave their Gulf Coast homes ahead of the arrival of Tropical Storm Isaac as forecasters warned it was gaining strength as it followed the same path Hurricane Katri