Noted: And in a new twist, researchers at the University of Wisconsin-Madison have identified the development of ?superjets? in the Pacific ocean that may have fueled some of this year?s severe weather and heavy rains. These superjets form in the western Pacific when the subtropical jet stream lifts north and combines with polar jet stream. Jon Martin, one of the researchers, says these superjets can bring powerful storms to the Nation?s mid-section and Southeast 7-10 days after they form.