NEW : Moving northwest at 17 mph , the storm was 340 miles from Key West Tuesday . The start of the Republican National Convention in Haiti is delayed until Tuesday . the Republican National Convention and aid officials praise the Tampa government 's response to the storm . Authorities report hundreds dead in the impoverished nation due to Tropical Storm Isaac .
NEW : Moving northwest at 17 mph , the storm was 340 miles from Key West late Saturday . The start of the Republican National Convention in Tampa is delayed until Tuesday . U.N. and aid officials praise the Haiti government 's response to the storm . Authorities report at least 2 dead in the impoverished nation due to Tropical Storm Isaac .