Note that two the storms you're referring to (Iselle and Julio) may have similar predicted paths, but they currently 1000 miles away from each other, and will definitely not merge. Iselle is already impacting Hawaii, while Julio will not approach for several days (assuming the current forecast verifies).
Both FTDNA and Ancestry sponsor groups or projects where people in the same haplogroup can exchange information and maybe even find an ancient connection. But Y-DNA and mtDNA are intended to check ancient bloodlines, 10,000-50,000 or so years ago. They are not generally useful by themselves for genealogy.
H5e1 is my mtDNA Haplogroup from Family Tree DNA and Geno 2.0. 23andMe showed me to be H5, which is correct, but the Family Tree DNA and Geno 2.0 results are more specific. The information for hypervariable regions (HVR) HVR1 and HVR2 + coding region (CR), plus other markers, from Family Tree DNA are provided Here.