In Louisiana, police in DeSoto Parish had responded to at least 20 incidents, many on Interstate 49.

CNN: Heavy precipitation expected from Texas to New England

The bus had about 50 evacuees from New Orleans on board when the crash occurred about 4 p.m. on Interstate 49 northbound, said Opelousas, Louisiana, police Lt.

CNN: Katrina evacuee dies in bus crash

In 25 years, SXSW has mushroomed from a tiny music festival run by the local alt-weekly to a ten-day extravaganza attended by some 49, 000 people that, together with spring-break traffic, causes unholy traffic jams on Interstate 35 into and out of Austin (and has turned those same editors into decidedly wealthy entrepreneurs).

FORBES: TEDActive and SXSW Interactive