LES CAYES, Haiti—Haitian officials raised the death toll from a deadly weekend earthquake by more than 500 on Tuesday after Tropical Storm Grace forced a temporary halt to search and rescue efforts, a delay that fed growing anger and frustration among thousands who were left homeless. Grace battered southwestern Haiti, which was hit hardest by Saturday’s quake, and officials warned some areas could get 15 inches (38 centimeters) of rain before the storm moved on. Intermittent rain fell in the earthquake-damaged city of Les Cayes and in the capital of Port-au-Prince. Late Tuesday afternoon, the Civil Protection Agency raised the death toll to 1,941 and the number of injured to 9,900, many of whom have had to wait for medical help lying outside in wilting heat. The devastation is centered in the country’s southwestern area, where health care has reached capacity and people have lost homes and loved ones. Patience …