Tips for avoiding heat stroke Medowie, Ferodale, Campvale Tilligerry Peninsular by News Of The Area - Modern Media - January 26, 2017 With the thermal heat index (THI) soaring into the high forties, locals are warned to take precautions against heat stroke. According to one local GP (who wished to be unnamed) on very hot days, it is best to stay inside, keep the body hydrated and to use fans or the breeze