tweet_text: GOES-16 Mesoscale Imagery of #HurricaneDorian  now a Ὢ9Ὢ9Ὢ9Ὢ9CATEGORY 4 Ὢ9Ὢ9Ὢ9Ὢ9 EXTREMELY DANGEROUS &amp; LIFE THREATENING HURRICANE All persons in Florida need to be monitoring local Emergency Management / local National Weather Service advisories