PETIT-GOAVE, Haiti — Hurricane Matthew slammed into Haiti's southwestern tip with howling 145 mph winds Tuesday, knocking down trees and tearing off roofs in the poor and largely rural area, while inundating neighborhoods in floodwaters and mud.By nightfall, at least 11 deaths had been blamed on the powerful storm during its week-long march across the Caribbean. But with a key bridge washed out, impassable roads and phone communication cut off with Haiti's hardest-hit area, there was no way to know how many people might be dead or injured.The storm whipped at Cuba's sparsely populated eastern tip Tuesday night, as it headed for a two-day run up the length of the Bahamas that would take it near the U.S. coast.Hours after Matthew made landfall on Haiti's now-marooned southwestern peninsula, government leaders said they couldn't fully gauge the impact."What we know is that many, many houses have been damaged. Some lost rooftops and they'll have to be replaced while others were totally destroyed," Interior Minister Francois Anick Joseph said.At least five deaths were blamed on the storm in Haiti, including a 26-year-old man who drowned trying to rescue a child who fell into a rushing river, authorities said.