georgia governor nathan deal issue mandatory evacuation order thursday state coast include historic savannah deadly hurricane irma roll toward florida southeastern unite state evacuation order areas east interstate 95 areas west take effect saturday a.m. deal say statement governor also authorize 5,000 georgia national guard members respond storm expand state emergency 30 southeast georgia counties order affect cities savannah brunswick georgia hit category hurricane high since 1898 accord wsb-tv encourage georgians coastal areas could impact storm evacuate area soon possible deal say statement irma one powerful atlantic storm century plow past dominican republic toward haiti thursday devastate string caribbean islands kill least 10 people irma likely hit florida powerful category storm sunday storm surge flood begin within next 48 hours accord nhc gas shortages miami-fort lauderdale area worsen thursday sales five time norm storm exact path uncertain could affect georgia carolinas early next week georgia governor order evacuation savannah coast ahead irma