If you describe a physical attack, accident, or injury as horrific, you mean that it is very bad, so that people are shocked when they see it or think about it.
1. grossly offensive to decency or morality; causing horror;
"subjected to outrageous cruelty""a hideous pattern of injustice""horrific conditions in the mining industry"
2. causing fear or dread or terror;
"the awful war""an awful risk""dire news""a career or vengeance so direful that London was shocked""the dread presence of the headmaster""polio is no longer the dreaded disease it once was""a dreadful storm""a fearful howling""horrendous explosions shook the city""a terrible curse"