▁ 1 8 : 0 0   UTC , ▁about ▁ 6 0   mi ▁( 1 0 0   km ) ▁south - s out heast ▁of ▁Key ▁West , ▁Florida . ▁Initial ly , ▁the ▁de pression ▁moved ▁west ward , ▁until ▁a ▁break ▁in ▁a ▁r idge ▁caused ▁it ▁to ▁move ▁n ortheast ward ▁early ▁on ▁August   3 1 . ▁Ar ound ▁that ▁time , ▁the ▁cy clone ▁intens ified ▁into ▁Trop ical ▁Storm ▁Herm ine . ▁The ▁storm ▁stead ily ▁intens ified ▁into ▁an ▁ 8 0   m ph ▁( 1 3 0   km / h ) ▁Category   1 ▁h urr icane ▁by ▁early ▁on ▁September   2 , ▁becoming ▁the ▁first ▁h urr icane ▁to ▁form ▁in ▁the ▁G ulf ▁of ▁Mexico ▁since ▁In grid ▁in ▁ 2 0 1 3 . ▁Herm ine ▁made ▁land fall ▁near ▁St . ▁Mark s , ▁Florida , ▁at ▁ 0 5 : 3 0   UTC . ▁After ▁moving ▁in land , ▁Herm ine ▁quickly ▁weak ened ▁and ▁transition ed ▁into ▁an ▁extr at rop ical ▁cy clone ▁on ▁September   3 ▁near ▁the ▁Out er ▁B anks ▁of ▁North ▁Carolina . ▁The ▁rem nant ▁system ▁me ander ed ▁off sh ore ▁the ▁N ort he astern ▁United ▁States ▁before ▁diss ip ating ▁over ▁sout he astern ▁Massachusetts ▁on ▁September ▁ 8 . ▁ ▁The ▁prec ursor ▁system ▁dropped ▁heavy ▁precip itation ▁in ▁port ions ▁of ▁the ▁Car ib bean , ▁especially ▁the ▁Domin ican ▁Republic