Source(s): I am a Meteorologist. Isolated thunderstorms are especially common during the summer in the mid-late afternoon when it is hot and humid. This is when you see those high towering, popcorn looking clouds in the middle of the afternoon when the sun hits the grounds and heats the air up. Usually isolated storms do not cover a large area.
Salmonella enterica serovar Typhimurium (S. typhimurium) causes enteric disease in humans. It is a food-and water-borne pathogen that can be easily disseminated in a population: for instance outbreaks of salmonellosis can occur by contamination of salad.
Salmonella spp. are bacteria which cause one of the most common forms of food poisoning worldwide. There are over 2,500 different types of Salmonella spp. but most produce a similar clinical picture to other forms of infective gastroenteritis. Salmonella typhi and Salmonella paratyphi can also cause systemic infection as described in the separate Typhoid and Paratyphoid Fever article.